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Reid and Co Developments Ltd
Jay Reid
"Concrete foundation" - W1T, job posted 16/10/25
CK Constructions & Development Ltd
CK Constructions & Development Ltd is a trusted extension builder serving customers in Soho and the surrounding area. Contact us to today to get a ...
"Basement conversion" - LAMBETH, job posted 02/05/25
A to Z Builders Ltd
A to Z Builders Ltd are here to help customers who need an Extension Builder in Soho. We offer a competitive rate to complete all your extension bu...
JK Doors
JK Doors is a trusted extension builder serving customers in Soho and the surrounding area. Contact us to today to get a competitive quote for exte...
JM Building Services
JM Building Services is a trusted extension builder serving customers in Soho and the surrounding area. Contact us to today to get a competitive qu...
Buildwiser
Buildwiser is a trusted extension builder serving customers in Soho and the surrounding area. Contact us to today to get a competitive quote for ex...
F & F Building Services
F & F Building Services is an established extension buildering business in Soho. We come highly recommended and provide competitive quotes for your...
Q Lofts and Extensions
Anthony Sullivan
We build Lofts. We build Extensions. We undertake conversions. Our Terms and conditions apply as shown in our starter packs.
£42/hr
£269/day
plansing
Plansing Ltd
Experience the best architectural design services with PLANSING, where we flawlessly integrate innovative architectural designer products to bring ...
£41/hr
£255/day
TOP CONSTRUCTION
TOP CONSTRUCTION is an established extension buildering business in Soho. We come highly recommended and provide competitive quotes for your work.<...
£26/hr
£26/day
London Design And Build
London Design And Build
Here at London Design and Build, our team of architects, interior designers, structural engineers and contractors, offer a bespoke, turn-key servic...
£48/hr
£303/day
Masters Construction UK
Joel Cayless white
20 years experience in high end carpentry, joinery and furniture making
£47/hr
£292/day
Big Mamma
Big Mamma is an established and experienced local extension builder in Soho. Please contact us for a free, no obligation quote and competitive rate...
£41/hr
£258/day
Cornerstone
Experienced extension builder ready to quote for your work. Cornerstone is the best extension builder in Soho. No obligation free quotes and many h...
£49/hr
£304/day
Sehem Design
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£45/hr
£282/day
Elv8 Interiors
Originally established in 1996 ELV8 has set the highest standards within the building industry, achieving success by winning numerous gold awards f...
£48/hr
£300/day
Starfish Properties
Starfish Properties is a trusted extension builder serving customers in Soho and the surrounding area. Contact us to today to get a competitive quo...
£42/hr
£261/day
Dominic Payte - Design & Build
Dominic Payte - Design & Build is an established extension buildering business in Soho. We come highly recommended and provide competitive quotes f...
£41/hr
£255/day
We Love Build - Three Arches
We Love Build - Three Arches is an established extension buildering business in Soho. We come highly recommended and provide competitive quotes for...
£50/hr
£309/day
We Love Build
We are a Design and Build Company, based in London.We focus on super prime and luxury residential renovations in and around London and internationa...
Quickly find an Extension Builder in Soho
Use these steps to find Extension Builders in Soho for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in Soho. We’ll notify you via text or email when an Extension Builder is available to quote.
- Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local Soho Extension Builders or phone them directly - you’re in control!
Local Extension Builders in London Boroughs
Job estimates from extension builders near you
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Build a timber frame extension - £26,248

Garden office - £10,248

Granny annexe - £87,248

Build a flat roof extension - £22,248

Convert a Garage - £16,248

Hip to gable loft conversion - £42,248

Convert a bungalow loft - £29,248

Build a dormer loft conversion - £42,248

Build a swimming pool - £81,248

Build a Mansard loft conversion - £52,248

Concrete foundations - £6,498

Underpin a building - £17,748

Two storey extension - £88,372

Convert a basement - £40,290

Side return extension - £44,290

Loft conversion - £36,075

Garage - £18,748

Single storey extension - £59,960

Outbuilding - £10,248

Install an RSJ - £2,448

Build a kitchen extension - £42,248
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