In the UK, space is a luxury — and moving home isn’t always the answer. That’s where home extensions come in. At STM Builders, we help families across Birmingham, Solihull, Dudley, Wolverhampton, Walsall, and surrounding areas unlock extra space without the hassle of relocating.
Whether you need a bigger kitchen, a new bedroom, a utility room, or even a full double-storey addition, we’ll guide you through the entire process — from design to completion. We understand UK planning rules, local council permissions, and building regulations, so your project runs smoothly and stays fully compliant.
Our team brings over 20 years of hands-on experience in creating practical, stylish extensions that blend perfectly with your home. All builds are tailored to your lifestyle, budget, and local property style — from Victorian terraces to modern semis.
With STM Builders, you get more than just extra space — you get a better way of living.
Extension Types We Offer
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Rear Extensions
Expand your home into the garden to create a spacious kitchen, lounge, or dining area.
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Side Return Extensions
Use narrow side paths in terraced or semi-detached homes for extra internal space.
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Wraparound Extensions
Maximise space by combining rear and side extensions — ideal for open-plan living.
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Double-Storey Extensions
Add upstairs rooms above your extension — perfect for extra bedrooms or bathrooms.
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Garage Conversions
Transform unused garages into home offices, gyms, or living spaces.
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Orangeries & Sunrooms
Let in natural light while keeping insulation — a great mix of glass and brick.
Our Extension Process
1 Free Home Consultation
We visit your property to discuss your needs and assess the space.
2 Design & Planning
We prepare drawings and handle council permissions if required. 
3 Clear Quotation
You receive a fixed, transparent quote and project timeline. 
4 Skilled Construction
Our expert team builds to spec, ensuring minimal disruption. 
5 Completion & Inspection
Final walkthrough to make sure everything is signed off and built to UK standards. 