One unused floor. One quiet 8–14 weeks. A new home.
A London loft conversion adds a master bedroom, guest suite or study without moving postcode — and on a typical Victorian terrace it pays for itself the day you list it.
Five ways to convert. One sane process.
All costs include VAT, design, planning, structural engineer, and contingency.
01Velux / Rooflight£30k–£65k18–28 m²6–8 weeksPermitted Development+
Generous head height, healthy ridge, no extra width needed. Rooflights cut into the existing slope — no new structure added to the perimeter. Permitted Development in most London boroughs. The fastest way to unlock a bedroom and bathroom in the roof space.
02Rear DormerMost popular£55k–£95k22–35 m²8–12 weeksPermitted Development+
You want maximum floor area on a Victorian terrace. Full standing height throughout. The rear slope is replaced by a vertical dormer wall and flat roof — the most common loft type 2VP builds across Fulham, Battersea, and Chiswick.
03L-Shape Dormer£70k–£115k30–45 m²10–14 weeksPermitted Development+
You have both a rear and side return roof slope — combining two dormers into a single L-shape for maximum floor area. Adds an extra bedroom and bathroom compared to a standard rear dormer.
04Hip-to-Gable£60k–£100k20–30 m²8–12 weeksPermitted Development+
Your property has a hipped roof — sloping on all four sides. Extending the gable end to a vertical wall creates significant extra volume. Often combined with a rear dormer for a larger conversion.
05Mansard£90k–£160k35–50 m²12–16 weeksFull Planning required+
Maximum volume, flat roof with near-vertical rear face. Often the only option in conservation areas and on listed buildings where a conventional dormer would be refused. Always requires Full Planning consent.
Where your £75,000 goes.
Typical rear dormer loft conversion in inner London. Your contract is itemised line-by-line — every number agreed before work starts.
What’s in the price. What isn’t.
Included
- ✓Architectural design & drawings (Nick Elias Architects)
- ✓Planning application (where required)
- ✓Structural engineer
- ✓Party-wall surveyor (where applicable)
- ✓Building Regulations / Control
- ✓All structural steelwork
- ✓Roofing, insulation, cladding
- ✓Staircase (straight or bespoke)
- ✓1st & 2nd fix electrics, plumbing, heating
- ✓Plastering & decoration to white primer
- ✓Scaffolding, skips, parking suspensions
- ✓Daily site clean & welfare
- ✓12-month workmanship warranty on second-fix fittings (optional 10-year HomePro structural cover at 2.5%)
Not included
- –Furniture & soft furnishings
- –Bespoke joinery (available as add-on)
- –Bathroom or kitchen supply
- –Underfloor heating (available as add-on)
- –External landscaping
- –Specialist AV / smart home systems
- –Owner-supplied fixtures or fittings
Every item is specified line-by-line before you sign, priced against the scope we surveyed.
Extras you price before you sign.
All add-ons priced at contract stage — no surprises mid-build.
Project #005 — Victorian terrace, inner London.
A 30 m² rear dormer with a master bedroom suite, new staircase and en-suite shower-room — built into the existing roof of a Victorian inner-London terrace. Priced against the surveyed scope, with variations signed before spend.
- New rear dormer + EPDM flat roof, structural steels and reinforced floor build-up
- Master bedroom suite with new en-suite shower-room (45 electrical points)
- Bespoke straight-run staircase + balustrade, oak treads matched to lower floors
- Velux rooflight to landing for borrowed light, glazed Juliet to the rear
- JCT Minor Works contract · daily on-site report from week 1 to handover
Four steps. One signed agreement.
The same four steps every London loft conversion goes through with us. No consultancy waffle, no two-companies-passing-notes.
The bit only real loft clients can write.
Read all 16 Google reviews, including the 1-star.
59 prime London areas, one Fulham studio.
2VP’s studio is on Dawes Road, SW6. We carry full knowledge of borough planning regimes, conservation overlays, party-wall density and parking-suspension rates across these zones.
- Fulham · SW6
- Parsons Green · SW6
- Sands End
- Chiswick · W4
- Hammersmith · W6
- West Kensington · W14
- Shepherd's Bush · W12
- Acton · W3
- Chelsea · SW3
- South Kensington · SW7
- Kensington · W8
- Notting Hill · W11
- Holland Park · W11
- Paddington · W2
- Belgravia · SW1X
- Marylebone · W1
- Battersea · SW11
- Clapham · SW4
- Putney · SW15
- Wandsworth · SW18
- Wimbledon · SW19
- Barnes · Richmond
- Brixton · SW2
- Vauxhall · Nine Elms
Don’t see your postcode? Tell us where you are — we work across all of prime London.
The home you actually want, finished on the date in the contract — and you watch every day of it happen from your phone.
You answer 3 questions. We do the drawings, planning, party wall, trades and snagging.
- 10% to mobilise, then weekly against work already done — with 5% held past handover: 2.5% released at practical completion and 2.5% at the end of the 12-month defects period
- £550 survey fee credited in full against your contract
- Every variation priced and signed before a penny is spent
No email needed to see your range. Quotes hold for 21 days, then materials re-price.
We are not the cheapest. If price is the only factor, we may not be the right fit — and that is fine.
FAQ
Questions every homeowner asks.
Not the question you had? Every question homeowners ask, answered in full — including the ones where the honest answer is that nobody can do what you are hoping for.