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House Extension Professionals in Westminster, Greater London

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Westminster / 25 mi
Architects & Architectural Designers
House Extensions
1 – 15 of 2,272 professionals
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2,272 Professionals

Featured Reviews for House Extension Professionals in Westminster, Greater London

Callender Howorth Interior & Architectural Design
House Extension Professionals in Westminster, Greater London
Average rating: 4 out of 5 stars15 December 2014
“Callender Howorth provided us with a full design and project management service for an extension and full refurb of our maisonette. They liaised with planners, architects, building contractors, kitchen companies and advised on sourcing of materials and interior furnishings. The project took 1 year from conception to completion. The people at CH were creative, professional and importantly a pleasure to work with. I would and have recommended them successfully to friends.”
Go Plans
House Extension Professionals in Westminster, Greater London
Average rating: 5 out of 5 stars31 December 2022
“Our experience with Go plans has been excellent. They arranged a home visit at very short notice, listened to our suggestions and compiled the initial drawings relatively quickly. They also successfully handled the whole planning permission process for us and provided a very fast and professional response to the requests and changes requested by the planning officer. We would definitely use them again for future work.”
XAMI Architecture & Design
House Extension Professionals in Westminster, Greater London
Average rating: 5 out of 5 stars24 May 2017
“I photographed Bernard's remodelling and interior design of a flat in North London. The work on show and Bernard's approach to the shoot demonstrated his eye for design, his attention to detail, and his very pleasant and professional attitude. He has a background working on big-budget international projects, which is evident in his meticulous approach, but as someone to work with he remains down to earth, approachable and collaborative.”
Francesco Pierazzi Architects
House Extension Professionals in Westminster, Greater London
Average rating: 5 out of 5 stars4 June 2014
“Innovative design ideas with precise attention to detail. FP provided a thorough service from design to project management (including liaising with builder throughout project; obtaining planning permission; managing payment schedules). Good source of knowledge and advice for furnishings and fittings. Some expensive tastes...! Very nice to deal with and would reccomend without any hesitation.”
Hampstead Architects
House Extension Professionals in Westminster, Greater London
Average rating: 5 out of 5 stars20 December 2021
“HA have been a great help with our extension/ renovation and have helped guide us through planning, structure and building regs. They even put us in touch with some quality local contractors which gave us confidence going into the build stage. Working with Phil and the team has been great along with their honesty and advise it has made the project an enjoyable process. I would highly recommend HA !”
MODEL Projects Ltd
House Extension Professionals in Westminster, Greater London
Average rating: 5 out of 5 stars17 January 2014
“Model Projects were a delight, from the initial brief with James who immediately took my requirements and turned them into a fantastic design - spot on first time with no amendments necessary. Kathryn then took over on a day to day basis as project manager and I cannot praise her highly enough. Dealing with the local authority, building control, structural engineers and the many contractors was done with calm and determination and I now have my dream space.”
The Market Design & Build
House Extension Professionals in Westminster, Greater London
Average rating: 5 out of 5 stars19 October 2016
“The Market Design and Build has just finished a big project for us and we couldn’t be happier. The property is an old converted barn so the challenge was huge. Obviously there were some set backs but the communication in between us (property owners) and The Market was excellent so problems were solved quickly. These guys are not here to screw you over. Before signing the contract they guaranteed us that they wouldn’t leave the project until we were 100% happy.. And they didn’t! We are sure to use The Market again if we need more work done on a property in the future.”
RHJB Architects
House Extension Professionals in Westminster, Greater London
Average rating: 5 out of 5 stars20 May 2016
“Designed a Garden Room extension to the back of a 1960s house in a 20th Century Conservation Area to create an 'integrated living' feel to the ground floor including taking the kitchen into this space. The Architects worked collaboratively with us, taking the design through the Planning process, producing detailed tender documents to enable us to select an appropriate builder. Remaining in the background but available to support us during the construction period.”
Ambo Architects
House Extension Professionals in Westminster, Greater London
Average rating: 5 out of 5 stars22 May 2018
“Paul of Ambo Architects was recommended to me by my builder who praised his detailed construction drawings and problem solving skills. He said architects often provided only outline plans with very little thought on how the design should be practically achieved and that Paul was very different. The builder was right. Paul proved to be a delight to deal with, a very good listener with an open collaborative approach to the early stages of design. He has a great understanding of regulations both planning and building and produced a final design to a very high standard that sailed through all regulatory processes. The drawings provided for construction were extensively detailed with nothing left to chance, when any issues did arise Paul was on hand to help resolve the problems. The project was for a ground floor side return extension with a small first floor extension above. The realised design absolutely maximises both the available space and light in what is a small, and previously dark mid-Victorian house. The contemporary design, with modernist influence, is achieved in traditional materials and sits well with the rest of the victorian architecture. I would recommend Ambo to anyone.”
Trevor Brown Architects
House Extension Professionals in Westminster, Greater London
Average rating: 5 out of 5 stars14 October 2015
“Trevor Brown was a pleasure to work with. We started with a humble idea of replacing a structurally unsound kitchen with something a bit nicer, and he transformed the project into a fabulous piece of architecture. Trevor is knowledgeable, and has an ambitious attitude to even simple projects. By paying attention to both the structure and the details of the kitchen, Trevor created a space which is a beautiful space and also very functional. Trevor is a busy man, but he replied to emails, and answered the phone when we had queries. He worked well with the construction team and they were able to take a pragmatic approach to solving problems along the way. We exceeded the original budget, but that was at least in part because we chose more expensive options when Trevor offered us choices.”
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Architect or Architectural Designer FAQs
A house extension is a construction process that involves expanding the footprint of your existing home. This could be extending outwards, either to the side or rear of the house, or upwards by adding another storey. House extensions provide extra living space and can significantly increase the value of your property.

House extensions can be categorised based on direction, structure and function. The main types include rear extensions, side return extensions, wrap-around extensions, and double or single-storey extensions. More specific ones could be kitchen extensions, loft conversions, basement conversions, garage conversions or conservatories. Select the type that best suits your property and meets your space needs, if you are unsure, speaking with a local home extension builder in Westminster.

Generally, house extensions are worth the investment. They provide additional living space and can dramatically increase the resale value of your home, often covering the initial investment cost. However, plan carefully and choose a reputable house extension builder to ensure a high-quality build that will add value to your property.

The cost of a house extension can vary significantly based on several factors, such as the size, complexity of the design, quality of materials used, and geographical location. However, as a rough estimate, a single-storey extension can range from £1,000 to £2,000 per square metre, whereas a two-storey extension can start at around £1,500 per square metre.

Planning a house extension involves several stages, including idea generation, design, planning permission, and construction. Consult with a house extension architect to create a design based on your needs and budget. Ensure to check with your local council about planning permissions. Finally, choose a reputable house extension builder to bring your vision to life.
Why Hire Architects & Architectural Designers on Houzz?
2,272Local Pros on Houzz Who Serve Westminster, Greater London
95,000+Total Number of Reviews Left by Homeowners
Are you considering a house extension? On Houzz, you can find an extensive selection of Westminster house extension professionals near you, eager to turn your vision into a reality. Whether you're planning an extra bedroom, expanding your kitchen or designing a brand-new workspace, these professionals have the skills and expertise to make your project successful. House extension professionals include architects who can draw up detailed plans and builders who will execute them to the finest standards.

Choosing a house extension professional on Houzz ensures peace of mind, knowing that you’re in safe hands. They come highly recommended with a strong track record of creating bespoke, high-quality extensions in Westminster in a wide range of styles and budgets. Whether planning a new kitchen extension, adding a new storey, or just wanting more living space, find your house extension solution with us.

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