About Us
A leading London construction company with over 20 years of excellence, integrity, and reliability in every build.
Building with Vision, Backed by Experience
We are a leading construction company with a reputation built on over 20 years of excellence, integrity, and reliability. Based in London, we specialise in delivering high-quality residential and commercial projects — ranging from loft conversions and extensions to new builds, basements, and full refurbishments.
What sets us apart is our fully in-house team of architects, interior designers, and skilled tradespeople, allowing us to manage every aspect of your project from concept to completion. With a focus on design, efficiency, and attention to detail, we create spaces that are functional, sustainable, and beautifully built.
Whether you are enhancing your existing property or starting from scratch, we are here to bring your vision to life — with expert guidance, clear communication, and results that exceed expectations.
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Our Core Values
Quality First
Every project meets the highest standards of craftsmanship, from foundations to finishes.
Innovation
We embrace modern design, smart layouts, and sustainable building practices on every build.
Client Focused
Your vision drives every decision. Clear communication and transparency from day one.
Expert Team
Our in-house architects, designers, and builders bring decades of combined experience.
Our Promise
Professional & Trust-Building
- Building with Vision, Backed by Experience.
- Your Trusted Partner in Design and Construction.
Creative & Modern
- Where Design Meets Precision.
- Spaces Designed to Inspire, Built to Last.
Efficient & All-in-One Focus
- Complete Design & Build Solutions, All Under One Roof.
- From Concept to Completion — Seamlessly Delivered.
Let us bring your vision to life — with speed, style, and expert service you can count on.
Company History
Founded
Build Extensions UK was established with a vision to transform London homes and commercial spaces through design-led construction.
First Major Project
Completed our first large-scale loft conversion in Wimbledon, setting the standard for quality craftsmanship.
Commercial Division
Expanded into commercial fit-outs, office refurbishments, and retail interiors across London and Surrey.
Award Winning
Recognised with industry awards for design excellence and client satisfaction in residential construction.
Expanded In-House Team
Grew our fully in-house team of architects, interior designers, and skilled tradespeople to 16+ professionals.
20 Years Strong
Celebrated two decades of delivering exceptional residential and commercial builds across London and Surrey.