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Best of Houzz Winner Design and Build Companies in City of Westminster, Greater London

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City of Westminster / 25 mi
Design & Build
Best of Houzz winner
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Featured Reviews for Best of Houzz Winner Design and Build Companies in City of Westminster, Greater London

Homeconcepts
Best of Houzz Winner Design and Build Companies in City of Westminster, Greater London
Average rating: 5 out of 5 stars23 July 2026
“Homeconcepts completed a substantial rear and side return extension on our home in Fulham earlier this year. It was a complex build. Space was limited and there was a fair amount of planning permission and structural engineering to work through before anything could start. The site team, the project management and the quality of the finished work were outstanding throughout. Every detail has been carried out to a very high standard. We're genuinely pleased to hear that friends nearby are now bringing them in for their own renovation next year. We wouldn't consider using anyone else for future work. Couldn't be happier with the result.”
MODEL Projects Ltd
Best of Houzz Winner Design and Build Companies in City of Westminster, Greater London
Average rating: 5 out of 5 stars6 December 2025
“We recently completed a side return extension on our Victorian terrace and had a fantastic experience working with Model Projects. They handled both the design and the project management, and we genuinely felt supported throughout the entire process. A special thank you to Sophie, who was our main point of contact. She guided us clearly through each stage, helped shape the design, and was always responsive and reassuring during the build. Her project management was exceptional and she repeatedly went above and beyond to keep things running smoothly. We are absolutely delighted with the final result. The space is beautifully designed, highly functional for our family, and has completely transformed how we use our home. We would readily recommend Model Projects to anyone considering an extension or renovation.”
Plus Rooms
Best of Houzz Winner Design and Build Companies in City of Westminster, Greater London
Average rating: 5 out of 5 stars6 November 2023
“So building work is fraught with fear, worry, anxiety and stress, but from the get go Plus Rooms impressed us by being able to calm our nerves. From the initial visual plans in our first meeting, to comprehensive schedules, detailed kick off meetings and weekly site visits. The building team became like Rockstars in the house and were amazing with our young kids, as we decided to live in when doing it. Did we have problems we had to overcome, of course, what build doesn't - but it felt like a true partnership and they were always quick to respond. We also finished bang on time. Plus Rooms were slightly more expensive than others, but because they could give us such clarity from the get go and would project manage the whole thing, that's why we went with them and i'm glad we did.”
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Design and Build Company FAQs
In short, a design and build company consists of all stages of the construction process, from design to build, in one place. A design-build firm works under one contract with the project owner to complete both design and build steps of the project.

They will take on the responsibility of planning the project, drawing up the designs, costing, sourcing the building materials and supplies, building the structure, installing any permanent features and possibly advising on the interior design of your home; all while consulting you every step of the way.
Speed and cost. Hiring a design & build company for your City of Westminster project means that the whole process from start to finish will be quicker, as all stages of the project will be handled by one company. This also saves time finding additional companies to complete certain stages of the project and potential back & forth between builders and designers to discuss the plans.

By using a design and build company in City of Westminster for your project, you will also be given an all-in-one quote for the design and construction of your project. This is often cheaper than hiring separate professionals for each step of your project.
You can find a local design-build company in City of Westminster with Houzz in two ways:

  • Answer a few questions about your project to get matched with a local professional for free. Enter your postcode above to get started.
  • Browse through our list of the best design-build companies in City of Westminster where you can find their profiles, reviews and photos of past work.

    • After choosing either option, you can reach out to the design-build professionals you want to discuss your project. You can request and compare quotes before hiring the right design and build company for you.
    There are 66 Design-Build professionals, registered on Houzz in City of Westminster.
    Why Hire Design & Build on Houzz?
    66Local Pros on Houzz Who Serve City of Westminster, Greater London
    95,000+Total Number of Reviews Left by Homeowners
    Planning a renovation project or building your own home can mean involving a lot of different companies, contractors and professionals, making everything a bit of a struggle to stay on top of. One way to cut out a couple of middlemen is to use City of Westminster design and build companies to build and design a house or a few rooms; handling your project from design and planning right through to construction. Hiring a design and build firm in City of Westminster will make it so much easier if you plan to build your own house from scratch as they can work with you through every step of the process, without having to switch from architect, to designer, to builder, to stylist and back again. Design and build contracts have become more and more common as homeowners look to find more efficient ways of building custom homes, and you can find a whole list of design and build contractors in City of Westminster near you right here on Houzz if you’d like to find out more about hiring a design and build company.