Kensington and Chelsea · London
Hip-to-Gable Loft Conversion in Kensington and Chelsea
Premium borough with listed and conservation stock — basement and interior work dominates.
Kensington and Chelsea
Hip-to-Gable Loft Conversion specialists across Kensington and Chelsea.
We deliver hip-to-gable loft conversion projects across the full Kensington and Chelsea postcode set — SW3, SW5, SW7, SW10, W2, W8, W10, W11. Premium borough with listed and conservation stock — basement and interior work dominates.
A hip-to-gable converts the sloping hip on the side of a semi-detached or end-of-terrace house into a vertical brick gable wall. This rebuilds the roof footprint into a simple pitched form that mirrors a mid-terrace, and almost always pairs with a rear dormer to deliver a master suite, two bedrooms, or a bedroom-plus-office layout with full headroom across both. It's the highest-value loft conversion for 1930s and 1950s London semis — the kind that line streets across Barnet, Enfield, Bromley, Croydon, Sutton, Harrow and Ealing.
Every Kensington and Chelsea project includes a free desk-based planning assessment before we quote. We know the local planning officers, party wall surveyors and approved inspectors by name.
Costs
Hip-to-Gable Loft Conversion cost in Kensington and Chelsea 2026.
| Configuration | Cost range | Timeline |
|---|---|---|
| Hip-to-gable only | £65,000–£85,000 | 9–11 wks |
| Hip-to-gable + rear dormer (1 bed + ensuite) | £80,000–£105,000 | 10–13 wks |
| Hip-to-gable + L-shape dormer | £95,000–£125,000 | 12–14 wks |
| End-terrace hip-to-gable + double dormer | £105,000–£130,000 | 12–14 wks |
Local advantage
Eight years of hip-to-gable loft conversion work in Kensington and Chelsea.
Familiarity with Kensington and Chelsea's planning officers, party wall surveyors and approved inspectors cuts weeks off the approval timeline. We deliver consistent quality across all 8 postcodes the borough covers.
Recent Kensington and Chelsea work
Hip-to-Gable Loft Conversion examples.
Builderr vs other London builders.
The construction industry has a wide distribution of operators. Here's what changes between a directly-employed, fixed-scope outfit and the alternatives.
| Criterion | Builderr | Typical London builder | Cowboy outfit |
|---|---|---|---|
| Labour model | Directly employed team (PAYE) | Mixed subcontract gangs | Day-rate cash labour |
| Pricing | Fixed-scope itemised quote | Estimate + provisional sums | Verbal price + variations |
| Design & engineering | In-house architect + SE | Outsourced, separate billing | Builder draws on the back of an envelope |
| Planning + LDC handled | Yes — included in price | Often charged extra | Builder asks you to apply |
| Party wall surveyors | Instructed by us | Your responsibility | Skipped (illegal) |
| Building control | Plans + site inspections booked by us | Building Notice route | Not registered |
| Project management | Dedicated PM, weekly photo updates | Foreman doubles up | Owner-manager juggles 5 jobs |
| Payment schedule | Stage payments against signed-off milestones | Weekly invoices | Cash up front |
| Insurance | £10M PL + 10yr structural warranty | £2–5M PL only | No documented cover |
| Snags at handover | <3 typical | 20–30 typical | Walk-off mid-job common |
| Variation creep | 0% — fixed scope | +15–25% over original quote | +40%+ regularly |
Save £20,500–£46,125 on a hip-to-gable loft conversion in Kensington and Chelsea.
Industry data (FMB, RICS, Which? Trusted Trader 2024) shows the average London construction project overruns by 18–22% on cost and 25–35% on time. Fixed-scope contracts with a single accountable team eliminate that variance. The savings above assume a typical project at £102,500.
FAQ
Hip-to-Gable Loft Conversion in Kensington and Chelsea.
How much does a hip-to-gable loft conversion cost in Kensington and Chelsea?+
Hip-to-Gable Loft Conversion projects in Kensington and Chelsea typically cost £75,000–£130,000. Kensington and Chelsea sits across postcodes SW3, SW5, SW7, SW10; local rates align with the wider London market.
Do hip-to-gable loft conversions in Kensington and Chelsea need planning permission?+
Premium borough with listed and conservation stock — basement and interior work dominates. We carry out a free desk-based planning assessment for your specific address before quoting, identifying whether permitted development, prior approval, or full planning applies.
Do you work across all Kensington and Chelsea postcodes?+
Yes — we deliver hip-to-gable loft conversion projects across all Kensington and Chelsea postcodes including SW3, SW5, SW7, SW10, W2, W8, W10, W11.
How much does a hip-to-gable loft conversion cost?+
Hip-to-gable with rear dormer runs £80,000–£130,000 fully fitted across most London semis and end-terraces.
Do I need planning permission for hip-to-gable?+
Usually no — hip-to-gable on semis and end-of-terrace falls under permitted development. Corner plots and conservation areas need full planning.
Get a Kensington and Chelsea hip-to-gable loft conversion quote.
Senior consultant call within one business hour. Fixed-scope quote for your Kensington and Chelsea project — no provisional sums.
Other types in Kensington and Chelsea
Explore other build types in Kensington and Chelsea.
Hip-to-Gable Loft Conversion across London