What Extension Specialists Do
From single-storey kitchen extensions to double-storey additions, verified extension specialists on Compare My Builder manage every phase of your build.
Single-Storey Extensions
Rear and side single-storey extensions for kitchens, living rooms, and open-plan spaces.
Double-Storey Extensions
Two-storey extensions adding multiple rooms and significant living space to your home.
Side & Wrap-Around Extensions
Side returns and wrap-around extensions maximising available space and natural light.
Planning & Building Regs
Planning permission applications, building regulations compliance, and structural calculations.
Why Use Compare My Builder
Verified & Insured
Every extension specialist is checked for insurance and credentials before joining.
Real Customer Reviews
Read verified reviews from homeowners who have used the specialist.
Free, No-Obligation Quotes
Compare up to 3 quotes from local extension specialists — no fees, no pressure.
Frequently Asked Questions
How much does a house extension cost in the UK?
A single-storey extension typically costs £1,500–£2,500 per m², with double-storey extensions costing £1,800–£3,000 per m². Compare quotes from verified extension specialists on Compare My Builder.
How do I find a reliable extension builder near me?
Look for verified reviews, examples of completed extensions, and confirmation they handle (or coordinate) planning permission and building regulations. Compare My Builder verifies tradespeople and aggregates real reviews so you can compare before booking.
What should be included in an extension quote?
A proper quote should break down groundwork, structural work, roofing, first and second fix, and confirm whether planning/building control fees are included.