Stone home extension with sliding glass doors by GMB Builders LTD in Glasgow

Extensions

Extensions that add space & value

Single and two-storey extensions that add space and value to your home. From groundworks and structural work to the final finish, we handle every stage to deliver a seamless, high-quality addition.

What we do

Extensions that add space & value

Whether you need a larger kitchen, an extra bedroom, or a whole new living area, our extensions are designed and built to blend seamlessly with your existing home.

From the first groundworks to the final coat of paint, one trusted local team handles every stage — structural work, joinery, roofing, plastering and finishing — so your project runs smoothly from start to finish.

What's included

A complete service.

Single-Storey Extensions

Open-plan kitchens, living rooms and garden rooms with bi-fold doors and rooflights that bring the outside in.

Two-Storey Extensions

Add bedrooms, bathrooms or a full new floor with structural timber kits, roof trusses and full finishing.

Groundworks & Foundations

Trench excavation, foundations and site preparation done properly so your extension stands the test of time.

Structural Timber Kits

Modern timber frame construction with insulation and membrane for fast, energy-efficient builds.

Roofing & Roughcasting

Pitched roofs, dormers, slate roofing and external rendering to match or complement your home.

External Rendering & Insulation

Silicone rendering and external wall insulation for a clean, weatherproof, energy-efficient finish.

How it works

From free quote to finished build.

01

Free Quote & Consultation

We visit to assess your space, talk through your ideas and provide a clear, competitive quote — no obligation.

02

Design & Planning

We agree the layout, materials and timeline, and handle planning and building warrants where needed.

03

Construction & Build

Groundworks, structure, joinery, roofing and finishing — to a high standard, keeping the site tidy throughout.

04

Finishing & Handover

We complete the final details, clean up and hand over your new space, ready to enjoy.

Previous work

Our extensions work

5 Stars
across Glasgow
Stone home extension with sliding glass doors by GMB Builders LTD in Glasgow
Extensions
Large Stone House Extension & Living Space
Completed two-storey roughcast house extension in Glasgow by GMB Builders LTD
Two-Storey Extensions
Completed Two-Storey Side Extension & Roughcasting
Finished modern extension open-plan living room with corner sofa and French doors by GMB Builders LTD
Interior Living Spaces
Modern Open-Plan Living & Dining Room Extension
Modern brick-finished home extension with slate roof and decking by GMB Builders LTD
Extensions & Decking
Brick Extension with Patio & Composite Decking
External silicone insulation rendering being applied to two-storey extension from scaffolding by GMB Builders LTD
External Wall Insulation & Render
External Silicone Rendering & Gable Cladding
Single-storey stone and slate roof house extension with panoramic garden bi-fold doors and triple roof lights by GMB Builders LTD
Extensions & Roofing
Natural Stone Garden Extension with Slate Roof & Skylights

Ready to start your project?

Get in touch for a free, no-obligation quote on your next building project in Glasgow.