House Extensions in Sheffield & South Yorkshire
When your home no longer fits your lifestyle, an extension is often the smartest solution. Rather than facing the expense and upheaval of moving, a well-designed extension adds the space you need while increasing your property’s value – often by significantly more than the cost of the build.
Designed to Build has over a decade of experience designing and constructing extensions across Sheffield and South Yorkshire. Whether you need a single storey rear extension for a larger kitchen-diner, a side return extension to make use of wasted space, a double storey extension for additional bedrooms and living areas, or a wraparound extension that combines rear and side extensions for maximum impact, our team manages every aspect of the project from architectural design and planning permission through to structural work, first fix, second fix, and final decoration.
We handle all structural steelwork in-house – a significant advantage when your extension requires RSJs for wide openings or load-bearing modifications to the existing structure.
Call for Services
+44 7903 603029
Years of Expericence
Ready to Extend Your Home?
Contact us today for a free consultation and detailed quote.
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And Recent Works
Roof Construction
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Roof Construction
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Modern Roofing
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Renovation Roof
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Classic Roofing
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Repair Roof
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Leading Way In Roofing &
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What People Say About Us
Designed to Build handled the entire structural steelwork for our extension, including calculations, RSJ installation, and finishing. The workmanship was outstanding and the project ran exactly to schedule.”
Sarah Thompson
The team removed our load-bearing wall and installed the steel beam in just two days. Everything was done safely, cleanly, and fully signed off by Building Control. We couldn't be happier with the open-plan layout.”
James Patel
Professional, efficient, and clearly experts at structural work. The steel beam installation was seamless and the team took care of all the compliance paperwork. Highly recommend.
Laura Mitchell
We needed multiple RSJs installed for a complex renovation project. Designed to Build managed the whole process confidently—temporary supports, steel installation, inspections, and making good. Excellent structural specialists.
Michael Green
Our commercial unit required reinforcement with new steel beams. The team worked around our operating hours and completed the job with minimal disruption. Reliable and highly capable
