Single and double-storey extensions, loft conversions, side-returns and wrap-around extensions — properly engineered, sympathetically designed, and delivered with the discipline of commercial construction.
Extensions and loft conversions are where most renovations go wrong. Too many trades, too many decisions, too little co-ordination. Benchmark approaches them the way a commercial fit-out is run: a clear programme, named accountability for each phase, and a single project manager owning the whole thing.
From planning and structural design, through groundworks, frame, roof and weathertight, to first fix, second fix and finish — one team, one timeline, one number to call.
Rear, side-return and wrap-around extensions. Steels, glazing, roof lights, blending old to new with care.
Adding a bedroom and bathroom above your kitchen extension. Full structural design and party-wall management.
Mansard, dormer, hip-to-gable and Velux conversions. New stairs, bedrooms, en-suites — all properly insulated and ventilated.
We co-ordinate architects, structural engineers, planning consultants and Building Control on your behalf.
We work across a tight, deliberate patch — single and double-storey extensions, side-returns and loft conversions in Surbiton, Worcester Park, Ewell, Epsom, Kingston, New Malden, Wimbledon, Cheam, Sutton, Esher and surrounding areas. See the full list on our areas we serve page.
Local matters in renovation. We know the housing stock — what 1930s Surbiton brickwork needs, where a Worcester Park kitchen tends to want a side extension, what a period Wimbledon terrace wants done sympathetically — because we work in these streets every week.
Whether you've got drawings already or you're still at the "we need more space" stage, get in touch and we'll walk you through what's possible.
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