Basement Conversions Wandsworth

Transform your unusable space in Wandsworth with a Basement Conversion. Gain extra storage or living space and improve your home.

Basement Conversion Company in Wandsworth

Basement Conversion London is a reputable and reliable basement building company that offers bespoke basement construction services to the residents of Wandsworth. We pride ourselves on our ability to create stunning basements that meet the specific needs and preferences of our clients. Whether you're looking to renovate, rebuild, or newly build a basement, we have the expertise and experience to make it happen.

Basement construction is a complex and challenging building project that requires specialist knowledge in waterproofing, underpinning, and insulation. At Basement Conversion London, we have a team of highly skilled and experienced builders who are well-versed in all aspects of basement construction. We use the latest techniques and materials to ensure that your basement is not only functional but also comfortable and energy-efficient.

Our focus is on providing professional basement construction services to the residents of Wandsworth. We have completed several successful projects in and around the area, including converting existing cellars to retrofitting basements with new excavations in both existing and new properties. We take great pride in our work and always strive to exceed our client's expectations.

If you have a property in Wandsworth with either an existing basement that you would like to convert or are looking to build a new basement, we would be delighted to discuss your project with you. Our team of experts will listen to your requirements and provide you with a range of options that are tailored to your specific needs and budget. We will work closely with you throughout the entire project to ensure that you are completely satisfied with the result.

In conclusion, if you're looking for a reliable and experienced basement building company in Wandsworth, look no further than Basement Conversion London. We are committed to providing high-quality basement construction services that are second to none. Contact us today to discuss your project and let us help you create the basement of your dreams.

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CUSTOM DESIGN BASEMENT

We specialise in high-quality custom Basement Conversions across Wandsworth and around other areas in London. We have built numerous bespoke basement conversions in Wandsworth which are fully tailored to the client's personal requirements and preferences. Our Basement Conversions in Wandsworth allow families to add habitable space to their homes without the need to move home. We offer you a complete design and build package with a turn-key option too. We cover everything from design, excavation, construction, waterproofing, fit-outs, and all other basement conversion requirements.

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BASEMENT CONVERSION PROCESS

At Basement Conversion London, we are fully committed, to delivering a transparent basement conversion experience in Wandsworth starting from the concept all the way to the final completion. Our comprehensive approach begins with a site survey and a meticulous design phase. We then create drawings and detailed structural calculations, which form the basis for a customized quotation tailored specifically to your basement project in Wandsworth. Once you approve our quotation our skilled architects take care of obtaining planning permission ensuring that construction can begin smoothly. Throughout the construction process we maintain open lines of communication keeping you informed and involved at every stage. Finally, we work diligently to successfully complete your basement conversion in Wandsworth. Our dedicated team is always available to discuss any aspect of your basement project in detail ensuring that you are completely satisfied.

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Basement Construction Costs Wandsworth

Looking for a stress-free basement conversion service that is specifically tailored to meet all your needs? Our team of professionals will begin by conducting a complimentary assessment of your property followed by providing you with a detailed and accurate estimate. This estimate covers every aspect of your basement construction project ensuring transparency and clarity from the beginning. Our quote will cover all aspects of the basement build including the costs of:

  • Stage 1: Excavation
  • Stage 2: Efficient disposal of waste materials
  • Stage 3: Underpinning for stability
  • Stage 4: Thorough waterproofing and tanking solutions
  • Stage 5: Selection of subflooring materials
  • Stage 6: Inclusion of all materials and labour costs
  • Stage 7: Internal Fit out and finishing work.

With our expertise you can trust that your basement construction in Wandsworth will be streamlined and well-coordinated process from start to finish. The Average basement costs in Wandsworth starts from £150,000 plus VAT. Read more about a Basement Conversion in London

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Wandsworth Housing Market and Basement Conversions

In the housing market of Wandsworth, where it can be difficult and expensive to find a home, many families are looking for alternative options to accommodate their growing space requirements. Whether it’s creating a family area, setting up a home office or even an annex for the guests or children’s nanny. Basement conversions offer a practical and cost-effective solution. It's worth noting that basement conversions are not limited to properties with existing basements or cellars. Even homes without these features can undergo this transformation providing a way to expand your living area. One significant advantage of basement conversions in Wandsworth is their suitability for children. These spaces can be cleverly converted into playrooms that cater to the needs of youngsters. Here children can enjoy activities with their friends in a safe environment reducing the risk to themselves and your precious belongings. This imaginative solution not only maximizes the potential of your property but also ensures a perfect balance between functionality and family life.

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Hassle-free Basement Conversions and ROI

Basement conversion a great way to boost the value of your property especially in the thriving Wandsworth housing market. By adding a basement, you can increase the value of your home by 10 to 15% and, in some areas across London this figure can even reach up to 20%. However, we understand that home improvement projects often come with worries and complexities. At Basement Conversion London, we specialize in creating stress free basement conversions specifically designed for Wandsworth properties. Our aim is to minimize disruption to your life. From designs and obtaining planning permissions to structural calculations and construction work we take care of everything for you. Each project is assigned a Project Manager who will be your go to person for any questions or concerns you may have. With Basement Conversion London, transforming your basement in Wandsworth isn't about increasing the value of your home; it's also, about enjoying a hassle-free experience from beginning to end.

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EXPLORE THE TYPES OF BASEMENTS

Kitchen

Cinema

Guest Lounge

Bedroom

Gym

Swimming Pool

Bathroom

Wine Cellar

Bar

Kids Room

Stages of your basement extension project in Wandsworth

START TO FINISH

From the moment you contact Basement Conversion London, we make it our priority to provide you with the best possible service. From the initial meet up at your property in Wandsworth, our office team will always be available to answer any questions or concerns you may have. Our dedicated project manager will also be available to offer support and guidance throughout the basement conversion process.

DESIGN AND CONSULTATION

We understand that every basement project in Wandsworth is unique, and that's why we offer a fully inclusive service that can be tailored to your specific needs. Whether you require the expertise of our Architectural Designers, Structural Engineers, or building control application specialists, we have the experience and skills to deliver exceptional results. We are also happy to work with your own Architectural Designers and design team if you already have one in place. Our team's flexibility and willingness to collaborate means that we can seamlessly integrate our services with those of your existing team.

LOCAL AUTHORITY APPROVAL IN WANDSWORTH

When it comes to local authority approval, we understand that navigating the regulations and requirements can be a daunting task. That's why we take care of all the necessary paperwork and submissions on your behalf. We will ensure that your project in Wandsworth is compliant with all building regulations and requirements and that all documentation is submitted correctly to your local council authority in Wandsworth.

Upon commencement of works, your dedicated Project Manager will be onsite all day every day, providing you with a single point of contact for any issues or updates regarding the project's progress. We believe in clear communication and transparency, and our Project Manager will keep you informed every step of the way.

ROUTINE BUILDING CONTROL CHECKS

A Building Inspector will make an appointment to visit at regular stages throughout the project in Wandsworth, their job is to ensure that we are adhering to all the latest building regulations. Upon completion of works, the Building Inspector will make a final visit and you will be issued with a completion certificate.

CERTIFICATES

Upon completion of all basement conversion works in your Wandsworth home and having gained approval from The Building Inspector we will supply you with all relevant safety certificates.

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Tanking and Waterproofing

Tanking is the superior building technique for underground structures that effectively controls water infiltration from the external soil. Our method utilizes draining channels to remove excess water, while a robust tank surrounds the walls and base of the basement, protecting it from infiltrations. We employ top-of-the-line cavity drain membranes, channel drains, and sump pumps, installed redundantly with alarms to ensure flawless operation. Our secondary pumps take over when the primary fails, while alarms signal any issues with the correct functioning of the pumps, such as battery exhaustion. Waterproofing is an essential component of any structure, underground or overground, to prevent dampness caused by water infiltration. At Basement Conversion London, we pride ourselves on our in-house expertise to design and implement the latest technologies and the most effective waterproofing systems, ensuring your basement is built to last.

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Planning and Permitted Development Requirements

In Wandsworth, permitted development for basements is strictly limited to non-substantial alterations. Any excavation for a basement must have planning permission, which requires a complex application process involving extensive documentation, reports, investigations, and specific conditions unique to basement conversions. However, the approval rate for basement conversion planning applications is typically very high, as councils frequently grant permission. While the result is predictable, the application process is longer and more costly than standard extension applications, such as loft conversions or rear extensions.

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Shell-and-Core and Fit-Out

When it comes to converting a basement, choosing the right basement conversion company in Wandsworth is crucial. With Basement Conversion London, you have access to a pool of highly specialized basement builders for every stage of the project. Our construction project manager is also a structural engineer, ensuring that the final structure of your basement is not only safe and solid, but that the entire process is carried out with maximum safety and control.

Shell-and-Core

During the shell-and-core phase, we excavate and extend the volume of your basement, using temporary supports to protect your existing structure. The result is a waterproof, reinforced concrete box that forms the external structure of your basement. We only work with subcontractors who have a proven track record of successfully damp proofing basements. Trust Basement Conversion London to deliver a basement conversion that is safe, reliable, and built to last.

Fit-Out

The subsequent stage is the fit-out, comprising of electrical and plumbing work, wall construction, flooring, lighting, plastering, and painting. With Basement Conversion London, you need not fret about locating the suitable tradespersons for each task. Our project manager will oversee everything and keep you informed on the project's status, schedule updates, and decision making at the appropriate juncture. They will assist you in clarifying your necessities and making decisions throughout the fit-out's duration until it is finished.

FAQ'S ABOUT BASEMENT CONVERSION ANSWERED

Do you have a question about Basement Conversion in Wandsworth? Below we have listed the most frequently asked questions.

  • Why Should I Convert my Basement in Wandsworth?

    If you have outgrown your home and are finding it difficult to move due to the current housing market, a basement conversion may be the perfect solution for you. By adding a whole new floor to your home, you can create a luxurious space for a home gym, cinema room, bedroom, bathroom, entertainment area, or even a swimming pool. Don't hesitate to invest in a basement conversion if you need extra space but don't want to move. It will completely transform your home and give you the space you need to live comfortably.

  • Is Planning Permission Required for a Basement Conversion?

    Planning permission may be required for a basement conversion in Wandsworth, depending on the situation. However, building regulations must always be followed. Our expert basement contractors will guide you through the entire process and handle all necessary applications for planning permission and approvals.

  • Do I need to have an existing Basement?

    You do not require an existing basement for your conversion. Basement Conversion London has the expertise to construct your basement from scratch and can provide guidance on the options available for your property.

  • Do I need to move out during the Construction Process?

    Clients are not required to move out during the construction of their basement. It is completely optional and up to their preference. However, it is possible for clients to live at their property during the conversion process, even when heavy work is being carried out.

  • What is Basement Waterproofing?

    Basement waterproofing is a crucial process that effectively halts water damage in below ground areas of your property in Wandsworth. Our team of basement waterproofing specialists are equipped to determine the most suitable waterproofing system, based on the construction, and intended use of the area. Trust us to provide the necessary solutions to protect your property from water damage.

  • Are Basement Conversions in Wandsworth worth it?

    A basement conversion in Wandsworth is an excellent solution to expand your property and boost its value by 10-15%. If you already have a basement, it's a wise decision to make. Don't hesitate to add extra space to your home with a basement conversion.

  • How long does a Basement Conversion in Wandsworth take?

    A basement conversion project in Wandsworth typically takes several months to complete. We confidently handle all necessary permits and permissions, ensuring a seamless process from start to finish. Simple basement conversions can take just a few weeks to complete, however, basements conversions that require digging out, pumping, floor lowering, and a number of other things can take a number of months to complete. Basement Conversion London will work with you closely to ensure you understand the timeframes involved for each stage of the basement conversion project.

  • Are there any specific building regulations that need to be followed when converting a Basement in Wandsworth?

    Converting a basement in Wandsworth requires strict adherence to building regulations. Safety codes, fire regulations, and structural requirements must be met without compromise to ensure a legal and successful conversion.

  • Can a Basement Conversion in Wandsworth add value to my property?

    Undoubtedly, a basement conversion in Wandsworth will add significant value to your property. By creating additional living space, you will appeal to a wider range of potential buyers and increase the overall value of your home. Don't hesitate to invest in this valuable upgrade that will pay off in the long term.

  • How much does a Basement Conversion in Wandsworth cost?

    The cost of basement conversion in Wandsworth is determined by various factors, including the scope of work, size of the basement, and addition of natural lighting. Our pricing strategy is tailored to each client, ensuring that they receive a competitive quote that meets their specific requirements. Rest assured that we offer a decisive and efficient approach to basement conversions.

  • Do you need a pumping system for a Basement Conversion?

    Absolutely! If you've experienced basement flooding in Wandsworth, then it's imperative that you have a drainage and pumping system installed before proceeding with your conversion. Moisture levels in basements can be unpredictable, which is why a sump pump is the most reliable choice for ensuring your basement stays dry and protected. Don't take any chances - invest in a pumping system for your basement conversion today.

RECENT BLOG POSTS


Top Ten Ideas for Basement Conversion

Top Ten Ideas for Basement Conversion Basement conversion lets you explore your imagination and use the space according to your needs. Consider our top 10 ideas and give your basement a new purpose. Our top 10 ideas will help you gain inspiration for your basement conversion. In the following article, we will help you explore possibilities to transform your house's dark, unused underground space into a modern place of utility. Transform your basement into a nice and cosy bedroom Transforming your basement into a spare bedroom for guests can put the basement to good use. Or, you can create a main bedroom and take shelter at the end of your tiring journey, leaving all the busy work on the top floor. Make it a place of peace and comfort with a friendly and spacious bed for you and your partner. Basement conversion for creating a bedroom does not end your task there. It would help if you made the place waterproof and floodproof; insulation will be required. Make it your one-stop destination for home cinema If you like action-thriller movies or are a fan of K-drama, your basement can be an ideal place for setting up a home cinema. It is ideal because outside noise and light may not enter there, creating a perfect spot for binge-watching your favourite TV show or cinema. If you have enough space, converting your basement into a cinema with a large screen and sound system is a good idea. However, you must ensure the space has a proper ventilation system so that a room full of people feels comfortable watching the movie. Your destination for a virtual playground You can create a home cinema and a personalised virtual gaming space by setting up your latest gaming console and inviting some of your friends to have fun. Set some comfy couches at the front of the big screen and get going for a mesmerising gaming journey. However, if you are into PC gaming and play on consoles, we suggest you select a corner of the basement and put the PC there. At the same time, leaving ample space for playing on the consoles. A basement conversion can open a wide range of options for you to utilize. Your personalised corner - a study or library However, the basement can be ideal if you do not play on PCs or consoles and prefer to spend most of your time studying. You can set up your study here, out of sight from other people. You can also design your study to allow sunlight during the basement conversion. Letting sunlight into your basement will help keep the study energy-efficient. Controlling the temperature of the study will ensure a safe environment suitable for work that requires complete concentration. Play space for children. Identifying a safe and secure play space for children has become challenging. Converting your basement can provide children with a safe environment to play in. It will also allow you to have some quality personal time without interruption from your children. If you have a single child, you can invite his classmates and make the basement conversion worthwhile. You can use attractive tools to make the play experience exciting for them. Experiment hub for your culinary delights If you are passionate about cooking and try making new cuisine every weekend, setting up a kitchen in the basement can be a good idea. You can prepare new dishes and experiment with new combinations of ingredients. You can install a modular kitchen and a sound ventilation system to keep the oil and spices out of the basement. Basement conversion will allow you to customise the place according to your requirements. Set up a personalised spa in the basement. You can set up a personalised spa at a controlled temperature in your basement. After a stressful week, you can enjoy a relaxed session of aromatic bathing. You can also set up a personalised sauna to help you relax and release tension from your muscles through controlled exposure to heat. Build your personalised gym If you are a passionate fitness enthusiast with little time to hit the gym and maintain a proper exercise routine, setting up gym equipment in your basement might be a good idea. If you have enough resources to get essential equipment, you can quickly complete your personalised gym setup at home. Please make your own exercise and diet charts and follow them regularly to see results. However, the basement conversion work must consider strong reinforced concrete for the floor to handle heavy gym equipment weights. Underground music studio If you are an aspiring DJ or music composer, we understand that you need a soundproof place to record your music. What better place than the dark, old, and moist basement? A thorough study of the basement is needed to make it a music studio. This will help to understand the quality of the texture or its ability to keep sound, water, and other elements away from the studio. If you are an aspiring music director, you can also set up a music studio in the basement. It will neither bother you from outside sounds nor will you be able to disturb the surrounding environment. Basement storage cabinet Through your basement conversion work, you can install some storage cabinets in the underground area. The basement can be a good place for storing goods and materials that are to be used rarely. You can also use the place to set up your wardrobe. A basement wardrobe can be a good idea for keeping all your designer clothes and regular wear. Conclusion The basement conversion work can be used to implement your dream basement setup. Our guide, including the top 10 basement conversion ideas, may inspire you to come up with more innovative ideas for basement conversion. At Basement Conversion London, we have an expert team to implement your architectural ideas into reality.  ...

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What will impact the cost of a Basement Conversion?

The cost of finishing a basement can vary significantly based on several key factors. The type of property, size of the basement, and intended use of the space are crucial considerations. Additionally, the existing construction materials, such as walls and floors, will impact the required work and associated costs. Plumbing and electrical requirements, current ceiling height, and accessibility to the basement are all important elements that will influence the overall project expenses. Any existing moisture issues must also be addressed, as this can significantly increase the scope and cost of the renovation. To provide a definitive cost estimate, a thorough assessment of the specific project details is necessary. However, homeowners can expect the cost of a comprehensive basement finishing project to range from a modest investment to a substantial financial commitment, depending on the unique circumstances of the property. Planning Permission and Fees  When transforming an existing residential cellar or basement into a living area, the general rule is that you do not typically require planning permission. However, this changes if you intend to turn it into a separate unit or if you plan to add features like light wells that will alter the property's external appearance.  It is crucial to consult your local authority to determine whether your specific conversion project is considered permitted development. Remember, regardless of whether planning permission is required, you will always need to comply with Building Regulations. Waterproofing and Water table Waterproofing below ground level, known as "tanking," requires applying a robust waterproof material directly to the structure. This process entails a waterproof cementitious render on the walls, seamlessly integrated with a waterproof screed on the floor. Alternative methods, such as sheet membranes, asphalt, or liquid-applied materials, may also be employed. To withstand the formidable hydrostatic pressure of surrounding water, tanking and ensuring a dry cellar are paramount. Basements face immense pressure from the water table, and any failure to firmly anchor the tanking to the ground can lead to catastrophic consequences. The slightest flaw can be instantly exploited by the relentless hydrostatic pressure, and if a leak develops, it can be exceptionally challenging to locate and rectify. Adherence to the BS 8102:2022 code of practice, which provides authoritative guidance on protecting below-ground structures from groundwater, is essential for a successful waterproofing solution. Party Wall Agreements If your home is terraced or semi-detached, you must construct near party walls. In this case, you are required to follow The Party Wall Act of 1996. If you share an adjoining wall with a neighbor, you will need to obtain a Party Wall Agreement. The costs will vary depending on the professional advisers engaged, but you can expect to pay around £1,250 for a complete service, including managing the Party Wall Award, Party Wall Notices, Schedule of Condition, and full management of the process. This is a necessary step, and you should not proceed without ensuring compliance with the relevant legal requirements. Structural Work Cast-in-situ concrete is a reliable choice for reinforcing basement foundations or walls. Its ease of application, adaptability, and cost-effectiveness make it the preferred method for residential basements. For retrofit basements beneath existing structures, in-situ concrete is the only feasible construction method. A structural engineer is the essential professional to advise on the exact structural requirements for your basement. They will thoroughly examine any specifications and detailed drawings provided by your basement specialist, ensuring the project meets all necessary standards. The Association of Underpinning Contractors (ASUC) manages an accreditation and insurance scheme for existing structure underpinning, which is a common requirement for basement refurbishment or conversions. Adhering to this scheme is crucial to ensure the safety and integrity of your project. Digging  Creating more headroom by excavating the existing ground is one of the costliest and most time-consuming operations for a basement conversion project. This process can also be challenging due to access issues for labor, equipment, and materials. However, the necessity of this step depends on the intended use of the basement.  We strongly recommend engaging a Basement Specialist to handle the required works. They have extensive experience addressing issues like yours and can draw upon their portfolio of previous successful projects. This will ensure the job is done efficiently and effectively, without unnecessary complications. Forgoing the excavation process, if feasible for your needs, will significantly benefit your overall budget. Carefully consider the end use of the basement space and work closely with the Basement Specialist to determine the optimal approach. Introducing Services Converting your basement into a bathroom or WC requires essential services like water, electricity, and potentially gas. Extending your home's existing services to the basement typically costs around £750. However, you must ensure your current systems can accommodate the added living space. Basements are prone to dampness and mustiness, even when properly damp-proofed, so you must provide adequate ventilation via an electric inline fan. Existing services in a basement, such as drainage, electric, gas, and water pipes, are critical for the home above. Remember to allocate a budget for extending, removing, or replacing these services as needed. Widening an Existing Staircase If your existing basement stairs do not meet current Building Regulations, whether due to insufficient width or unconventional construction materials, take immediate action. Do not hesitate – discuss the matter directly with your local Building Control authority. They will provide you with clear guidance on the suitable solutions. While it is possible to add an additional string to the side of an existing timber staircase and fit new risers and treads, this may not always be the most cost-effective option. It is crucial to thoroughly evaluate the alternatives, including the possibility of removing and replacing the entire staircase with a new, modern design. To ensure a successful outcome, engage a reputable stair contractor who is well-versed in Building Regulations and has extensive experience in basement conversion projects. This expert will be able to provide you with tailored advice and a comprehensive solution that meets all the necessary requirements. Do not compromise on the safety and compliance of your staircase. Take decisive action, consult the experts, and explore modern staircase ideas that will not only enhance the functionality of your basement but also comply with the latest building standards. Introducing new windows or a lightwell When it comes to lighting your basement, there are several options, each with its own cost implications. The most cost-effective upfront solution is to extend your existing electrical supply to include ceiling and/or wall lights. However, it's important to remember that natural light is free, while artificial lighting will incur ongoing energy expenses. A more budget-friendly alternative is to install sun pipes, which can effectively illuminate dimly lit areas of your basement and the interior space. On the other hand, more expensive options, such as glazed floors, light wells, or an internal courtyard, can also be considered to introduce more natural light into the basement. In summary, the decision on how to light your basement should be based on a careful evaluation of the upfront and long-term costs, as well as the desired level of natural illumination. By weighing these factors, you can make a confident and informed choice that best suits your needs and budget....

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What is Drained Protection in Basements?

The protection method commonly known as 'tanking' is referred to as drained protection in the construction industry. This method involves managing groundwater penetration through the implementation of an internal drainage system. This system typically comprises drainage channels and sump pump systems, which are utilized to collect and remove water. Additionally, vapour barrier drainage membranes may be included to isolate the internal basement environment from damp and wet wall and floor substrates. When all necessary considerations applicable to a given scheme are duly considered, drained protection can provide low-risk solutions. To simplify, this protection method involves lining the walls and floors with dimpled cavity drainage membranes, similar in appearance to the back of an egg box but smaller. The walls are then dry lined and plastered, and the floors are finished in screeds or floating timber. Beneath this layer, a drainage system is installed which will either drain out at low ground if in a hillside position or be linked to fixed floor drains or a sump station. Drained Cavity Systems A Drained Cavity within the basement or sub-structure refers to a pre-formed cavity that is designed to intercept and drain away water ingress in compliance with BS8102: 2009 Type C (Drained) protection. This cavity is relied upon to collect groundwater seepage through the structure and channel it to drains or a sump for removal on a permanent basis. It is imperative to ensure that the external basement structure provides sufficient resistance to water ingress to ensure that the cavity only accepts a controlled amount of water when selecting a suitable water management system. Cavity Drain is a profiled HDPE sheet cavity former that offers a clear and safe route for water seepage into an existing or new basement while also providing a vapour barrier. This low-risk form of construction can be used for all Grades of basement. Cavity Drain is installed inside the basement structure and onto the structural slab. The design must incorporate facilities for inspection and draining ground water ingress, which may involve the use of Aqua Channel at the wall/floor junction or casting the structural slab to falls to direct water to pumped collection sumps and/or to gravity-fed drainage systems....

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What are the different types of Basement Conversions?

Transforming your basement is a highly lucrative investment that can significantly increase the value of your home. With careful upkeep and protection, your basement can become a desirable and functional space. If you're considering converting your basement into a livable area, it's worth exploring the most popular options available in the UK. Investing in a basement conversion is a big decision, but one that's increasingly popular among London homeowners. A basement offers complete privacy and a secluded area that can be used for a variety of purposes, from a kitchen to a cinema room, swimming pool, or gym. Depending on your budget and needs, there are several types of basements to choose from. Don't hesitate to explore your options and transform your basement into the ultimate living space. Full Basement Conversion The full basement conversion is the most comprehensive type of basement that can be created under your home, including any extensions. This conversion adds the maximum amount of space to your property, essentially creating a whole new floor. It is also the most expensive option starting at £400-600k (plus VAT), and takes the longest time for design, planning, and construction. Half Basement Conversion Opt for a half-basement conversion to create a brand new space underneath the main part of your house, excluding any extensions. This option starts at a cost of £150k (plus VAT) and provides ample room for an additional room beneath the main section of your home. Our expert architectural teams can also design a lighting well to accompany your new basement area, enabling more light to enter your newly created space and even generating a small outdoor area at the front or rear of your property. Garden Basement Conversion Introducing the garden basement - a fantastic option for those seeking extra space without disrupting the main structure of their home. With a starting cost of £150-200k (plus VAT), this type of basement conversion requires a garden area on your property. However, it is a much simpler construction process than other types of basements and can be used for hobbies or storage. Don't hesitate to consider this option if you need additional space, as it has a similar timeframe to other basement types. Cellar Basement Conversion For those seeking a more compact storage space, a coal cellar basement is an ideal option. This type of basement is thin and located underneath your home without a lighting well. It is perfect for storing perishables that require a cool, dark environment, such as wine. The cost of a coal cellar basement starts at £50k (plus VAT), and our surveyors will provide you with detailed information on the available options and timelines during your complimentary site survey. Choose a coal cellar basement for an efficient and effective storage solution. In London, local Borough councils have implemented stringent regulations governing the type and depth of basements that can be constructed for many properties. It is imperative to consult with your local building authority to determine the feasibility of your basement plans, and to discuss your options with one of our surveyors who have conducted their own investigations. Rest assured, Basement Conversion London can transform your basement into a revitalized space for you and your loved ones, subject to planning permission and your financial resources....

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What can go wrong in a Basement Conversion?

Basements can be a fantastic solution for many projects in London, whether you're building from scratch or renovating your existing cellar. They provide an opportunity to increase the value of your property and create living spaces. You can even incorporate luxury amenities like hidden swimming pools, saunas, game rooms, gyms, home theaters, and more. In some cases where space is limited or buying a property is too expensive, converting an existing cellar or extending downwards can be a smart and cost-effective choice. However, before you dive into this kind of project it's crucial to plan and execute it to ensure an outcome. Dealing with any issues that may arise underground can be stressful and expensive. So what factors should you consider before moving  Before Starting Off Firstly it's important to assess the likelihood of obtaining planning consent. Some London councils are currently hesitant to grant permission for this type of development due to concerns about its impact on neighboring properties. Secondly, think about the purpose you want your basement to serve. There are three categories; storage space; parking area; or living accommodation. Each category has requirements, in terms of water resistance that will affect the design considerations. Are basements feasible based on the site conditions? It's important to research to determine this. Analyze flood data, for the area. Determine the groundwater level as these factors will influence the type of waterproofing system or tanking required. Additionally, a site investigation is necessary to assist the structural engineer in establishing foundation depths. What construction method would be most suitable? There are options depending on the conditions identified in your surveys and investigations. For existing houses, even those with existing cellars underpinning may be necessary to increase head height and effectively transfer loads. Alternatively for basements mass concrete walls (ideal when ample space is available) or concrete-filled blockwork can be used. How should it be waterproofed? There are external tanking systems designed for different types of projects. Your design team must select the solution for your project so it's advisable to consult experts who specialize in this type of work. In some cases, a combination of two methods may be employed. Potential challenges Fortunately, structural integrity issues, with converted basements are rare occurrences. However, if proper surveys are not conducted and their findings are not taken into account the consequences can be devastating. For instance, there have been cases where the water pressure in the soil surrounding a building is substantial enough to cause the basement to lift. Addressing this issue without replacement is extremely challenging....

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