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Home Extension Services

How Can We Help?

We offer a variety of solutions for you to choose from, because every project is unique and we understand that our clients would like different levels of involvement from our team. Whether you are looking for design, build, design & build or anything else in-between, we are here to help.

Design and Planning

Building Reg. Drawings

Detailed Schedule of Works

Interior & Landscape Design (optional bolt-on)

Full Build Service

Build Management

Payment Stage Certification

3 Year Structural Guarantee

Party Wall Service

Approved Inspector

Thames Water

Fast Track Service

Why choose Build Team?

We pride ourselves in our flexible choices for regular homeowners, thinking of starting to plan and build their new extension.

If you have further questions, or would like to talk directly with one of our members, please follow the link below:

  • Founded in 2007 with 10+ years of experience in Design and Build
  • 900+ successful planning consents across London
  • Two-Stage Process: no obligation to build with us
  • Unlimited amendments prior to Planning Submission
  • In-house design and build management expertise

Our Two-Stage Process

Clients who instruct Build Team also benefit from our Two-Stage Process; meaning there is no obligation to commit beyond the Design Phase and you are free to tender your designs to other contractors if you wish.

Regardless of how you decide to proceed at this stage, you will automatically receive a fixed price tender from Build Team for the construction phase of your project.

Client Testimonials

Charlotte Mandy

Can’t recommend Design Team (and particularly Steven) more highly. They worked very closely with us to design our project. Really impressed by the time given to answer our questions and meet with us to discuss the design. Steven was always happy to answer questions and rework parts of the project. We are very happy with our final design and they made the planning process completely seamless. Many thanks!

Catherine Togher

We hired Build Team to develop the designs for a new extension on our ground floor flat. Their design advice was very helpful and professional throughout, and we have a design that we're very happy with. The planning process went smoothly and successfully, and so did the detailed design stage.

Ivana Zecevic

We hired the Build Team the undertake the first phase of our project (design) and have been very happy with the results and level of service. After shopping around for a couple of weeks and meeting with various companies we decided to engage the Design Team as it enabled us to complete the first phase of our project without commiting from the offset with that one company. The architect we were assigned was very amiable and took on board all of our wants and needs. The team also helped ensure that our planning application was approved in record time, helping us push the boundaries when it came to gaining approval from the local authority. We'd happily recommend the Design Team, who are capable in taking on a variety of projects from simple house extension designs to more complex and time intensive work (which ours proved to be in parts).

James Bentley

Loft Conversion - this was a our second project with the guys. A better team this time - and the quality was great and we have achieved exactly what we set out to do. They didn't do the decorating and finishing, but gave us a really well finished "box" to paint/tile bathrooms.

At Build Team, we’re dedicated to transforming homes across the capital with our bespoke extension services. Each project we undertake is a testament to our commitment to quality, functionality, and aesthetics. We understand that embarking on a home extension London project is a significant decision. We offer a comprehensive suite of services to cater to every aspect of your extension needs, whether it's a ground extension, loft conversion, combined ground and loft conversion, or bespoke kitchen design.

How Can We Help?

We believe that every project is unique, which is why we offer a variety of solutions tailored to meet the specific requirements and desires of our clients. Our team is equipped to handle various levels of involvement, from design to build, or a full design & build service. Our goal is to ensure that your house extension in London journey is as smooth and straightforward as possible.

Ground Extension

Our ground extension service is perfect for those looking to expand their living space horizontally. This option is ideal for house extensions London projects where the aim is to extend kitchens, living areas, or add new rooms on the ground floor. We manage every step of the process, from initial design to the final build. Our ground extensions are designed to enhance your living space while adding value to your property.

Loft Conversion

Loft conversions are a fantastic way to utilise the unused attic space in your home, turning it into functional living areas such as bedrooms, offices, or entertainment rooms. As experts in London house extensions, we ensure that every loft conversion maximises space and light, transforming your home without the need to extend outward. Our team guides you through the design, planning, and construction phases, making the most of your loft space in a way that complements your home’s existing structure.

Ground + Loft Conversion

For those looking for a comprehensive transformation of their living space, our combined ground and loft conversion service offers the ultimate makeover. This approach allows homeowners to significantly increase their living area by adding space both horizontally and vertically. It’s a complex process that requires expert planning and execution, and as London home extension specialists, we ensure a seamless integration of the new spaces with your home’s current design.

Kitchen Design

The kitchen is often considered the heart of the home, and our bespoke kitchen design service ensures it’s not only beautiful but also highly functional. Whether part of an extension or as a standalone project, our building extension London expertise allows us to create kitchens that are tailored to your specific needs and preferences. We focus on maximising space, enhancing usability, and incorporating high-quality materials and finishes.

Our Commitment to You

Our commitment to our clients is reflected in our transparent pricing, detailed planning, and quality construction. We understand the house extensions in London market deeply, which enables us to provide accurate and realistic build estimates, ensuring there are no surprises when it comes to the cost of extension London.

Transform Your Home With Build Team – Get Started Today!

Choosing Build Team for your London house extension means partnering with a company that values transparency, flexibility, accessibility, and integrity. We pride ourselves on our clear communication, precise planning, and delivering high-quality outcomes. Our two-stage process ensures that you have total flexibility throughout your project, with the option to proceed with us through both the design and build phases or to tender your design to other contractors.

If you're considering a home extension London or any other extension project, contact us today. Let us help you make the most of your home with our expert extension services.

Areas Served:

We provide home extension services in the following boroughs in London.


Barking and Dagenham, Barnet, Bexley, Brent, Bromley, Camden, City of London, Croydon, Ealing, Enfield, Greenwich, Hackney, Hammersmith and Fulham, Haringey, Harrow, Havering, Hillingdon, Hounslow, Islington, Kensington and Chelsea, Kingston upon Thames, Lambeth, Lewisham, Merton, Newham, Redbridge, Richmond upon Thames, Southwark, Sutton, Tower Hamlets, Waltham Forest, Wandsworth, Westminster

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