Loft conversion cost
in Kensington.
Kensington — W8 — runs from Notting Hill to South Kensington. Some of the most expensive postcodes in London, with housing ranging from Georgian terraces around Kensington Square to Italianate Victorian villas.
What makes loft work in Kensington distinct.
Housing: Georgian and early Victorian terraces, large stucco villas, plus garden-square set-pieces like Kensington Square and Edwardes Square.
Planning: The entire W8 postcode falls within Kensington Conservation Area, with overlapping Edwardes Square, De Vere and Phillimore conservation areas. Many properties are listed.
Applications go to Royal Borough of Kensington & Chelsea. We submit on your behalf and handle conservation officer correspondence end-to-end.
The five loft types — W8 numbers.
All figures inclusive of design, planning, build, contingency and VAT. The Kensington multiplier (1.25×) 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 Kensington and beyond.
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What Kensington homeowners ask us.
Do I need planning permission for a loft in Kensington?
The entire W8 postcode falls within Kensington Conservation Area, with overlapping Edwardes Square, De Vere and Phillimore conservation areas. Many properties are listed. Outside conservation areas, most rear-dormer conversions in Kensington 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.
Can a Grade II listed Kensington terrace have a loft conversion?
Sometimes — but only with listed-building consent in addition to planning, and only when the design is invisible from public viewpoints. RBKC's conservation officers usually require a mansard set behind the parapet with lead-rolled flat roof and slate-finished mansard slopes. The design phase typically runs 4–6 months before any build begins.
How long does a Kensington loft conversion take?
Typical timeline: 6–10 weeks for design and planning (longer in conservation areas like much of Kensington), 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. Royal Borough of Kensington & Chelsea processes PD-route Lawful Development Certificates in approximately 8 weeks.
What does a loft conversion add to Kensington property values?
In W8, 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 £56k–£275k build commonly exceeds the build cost by 30–60%.
Does 2VP work on Kensington loft conversions?
Yes — Kensington is within our core London catchment. Our studio is at 20 Dawes Road in Fulham, 2.5km from Kensington. We've delivered loft conversions across the W8 postcode and our subcontractor network covers Kensington & Chelsea. Free site visit, fixed-price quote, 10-year HomePro guarantee on the finished work.
Twenty minutes on site in Kensington.
On us.
Nick Elias RIBA and Vladimir will visit your Kensington 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 Kensington loft conversion using the same 2026 rate card we quote real clients with.
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