Built with excellence. Crafted by professionals.

House Extensions

House extensions that transform how you live.

Seamless, beautifully finished extensions that add space, light and lasting value — designed and delivered by one trusted team from concept to completion.

Finished open-plan living and dining extension by Claremont Build & Co
15+ Years of
experience
Beautifully finished dark kitchen installed by Claremont Build & Co
Overview

More room to live, without leaving the home you love.

An extension is one of the most rewarding ways to get more from your property — a brighter kitchen, an extra bedroom, or an open-plan space built around family life.

From the first sketch to the final coat of paint, we handle design, structural work, planning and construction in-house. The result is a space that feels like it was always part of your home — built to the same exacting standard we bring to every Claremont project.

What We Build

Every kind of extension, expertly delivered.

Single-Storey Extensions

Rear and side extensions that open up your ground floor for bright, sociable living.

Two-Storey Extensions

Add bedrooms, bathrooms and living space above and below in one considered build.

Wrap-Around Extensions

Combined side and rear extensions that transform the entire footprint of your home.

Side-Return Extensions

Reclaim the unused alley beside your home to widen kitchens and living areas.

Kitchen & Dining Extensions

Open-plan kitchen, dining and family spaces designed around how you really live.

Bespoke & Glazed Extensions

Architectural glazing, lantern roofs and one-off designs crafted to your vision.

Why Claremont

Extensions built the right way.

More space, more value

A well-built extension adds genuine square footage and lasting value to your property.

Permissions handled

We manage planning applications and building regulations so the process stays stress-free.

Minimal disruption

Tidy, well-managed sites and clear scheduling keep daily life running while we build.

Built to last

Skilled trades and quality materials in every detail, finished to an exacting standard.

Our Process

How we build your extension.

  1. 1

    Consultation

    We visit your home, understand your goals and advise on what is achievable for your space and budget.

  2. 2

    Design & Planning

    Detailed drawings, structural design and planning or building-reg applications, fully managed.

  3. 3

    Build

    Expert construction and project management with clear updates and a tidy site throughout.

  4. 4

    Handover

    Final checks, quality assurance and a smooth handover of your finished, ready-to-enjoy extension.

Questions

House extension FAQs.

Many single-storey extensions fall under permitted development, but it depends on the size, your property and location. We assess this early and manage any planning application required on your behalf.

A typical single-storey extension takes around 10–16 weeks on site, while larger two-storey or wrap-around projects take longer. We provide a clear programme before work begins.

In most cases, yes. We plan the build to keep disruption to a minimum and keep your home secure and weather-tight throughout. We will talk through the practicalities at consultation.

Cost depends on size, specification and complexity. Following a consultation we provide a detailed, transparent quotation so you know exactly what is included.

Ready to plan your extension?

Book a consultation and we'll bring 37 years of craft to your project.

Get a Consultation