Loft conversion cost
in Raynes Park.
Raynes Park — SW20 — west of Wimbledon. Edwardian and inter-war housing dominates, with strong family-buyer demand from the Wimbledon and Kingston catchment.
What makes loft work in Raynes Park distinct.
Housing: Edwardian terraces and 1920s/30s semis, with some 1950s housing on the southern fringes.
Planning: Kingston Road and Cottenham Park conservation areas cover specific pockets; most of SW20 retains PD rights.
Applications go to LB Merton. We submit on your behalf and handle conservation officer correspondence end-to-end.
The five loft types — SW20 numbers.
All figures inclusive of design, planning, build, contingency and VAT. The Raynes Park multiplier (0.90×) reflects local labour, scaffolding logistics, conservation requirements and finish expectations.
The 2026 London Loft Cost Guide.
Borough-by-borough pricing, a full cost breakdown, PD vs full planning explained, and the seven hidden costs to watch for in Raynes Park and beyond.
Send me the guide.
What Raynes Park homeowners ask us.
Do I need planning permission for a loft in Raynes Park?
Kingston Road and Cottenham Park conservation areas cover specific pockets; most of SW20 retains PD rights. Outside conservation areas, most rear-dormer conversions in Raynes Park 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.
Is a hip-to-gable conversion common in Raynes Park?
Very — the 1920s and 30s semis along Cottenham Park Road and Coombe Lane have classic hipped roofs that respond beautifully to hip-to-gable conversions. Combined with a rear dormer, this often adds two bedrooms and a bathroom for £115–£150k all-in.
How long does a Raynes Park loft conversion take?
Typical timeline: 6–10 weeks for design and planning (longer in conservation areas like much of Raynes Park), 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 Merton processes PD-route Lawful Development Certificates in approximately 8 weeks.
What does a loft conversion add to Raynes Park property values?
In SW20, 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%.
Does 2VP work on Raynes Park loft conversions?
Yes — Raynes Park is within our core London catchment. Our studio is at 20 Dawes Road in Fulham, 8.5km from Raynes Park. We've delivered loft conversions across the SW20 postcode and our subcontractor network covers Merton. Free site visit, fixed-price quote, 10-year HomePro guarantee on the finished work.
Pricing for Raynes Park’s neighbours.
Twenty minutes on site in Raynes Park.
On us.
Nick Elias RIBA and Vladimir will visit your Raynes Park home, walk the loft, check head height, advise on PD vs planning, and give you a realistic budget and programme — even if a loft isn’t right for your house.
One number. Sixty seconds. No callback.
Price your Raynes Park loft conversion using the same 2026 rate card we quote real clients with.
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