Loft conversion cost
in Roehampton.

Roehampton Village Conservation Area covers the historic core; the estates around it sit outside it but have specific design policies. Outside conservation areas, most rear-dormer conversions in Roehampton qualify for permitted development (PD) within the 40m³ (terrace) or 50m³ (semi/detached) volume limits. Mansards always need full planning. We check your specific address before quoting and submit the application on your behalf.

Excellent — the hipped roof responds beautifully to a hip-to-gable conversion plus rear dormer. PD rights are usually intact, and the resulting floor often adds two bedrooms and a bathroom. Typical £125–£160k all-in.

Typical timeline: 6–10 weeks for design and planning (longer in conservation areas like much of Roehampton), then 8–14 weeks on site for a standard dormer, 12–18 weeks for an L-shape or hip-to-gable, and 14–20 weeks for a mansard. LB Wandsworth processes PD-route Lawful Development Certificates in approximately 8 weeks.

In SW15, a well-executed loft conversion typically adds 15–25% to property value — often more in prime postcodes. The ROI is strongest when you add a double bedroom plus en-suite, which is the standard L-shape dormer configuration. Property uplift on a £41k–£198k build commonly exceeds the build cost by 30–60%.

Yes — Roehampton is within our core London catchment. Our studio is at 20 Dawes Road in Fulham, 4.0km from Roehampton. We've delivered loft conversions across the SW15 postcode and our subcontractor network covers Wandsworth. Free site visit, fixed-price quote, 10-year HomePro guarantee on the finished work.