We design, plan and build loft conversions across Chelsea and the wider Kensington and Chelsea borough — one team, one fixed price, one project manager from sketch to handover.
Chelsea is one of London's most architecturally controlled neighbourhoods — Georgian and Victorian townhouses, garden squares, mews and mansion blocks, with a high proportion of listed buildings and conservation areas. Work here is as much about consent and craftsmanship as construction, which suits our in-house design-and-build approach.
Mansard and rear-dormer loft conversions add a floor without altering a protected street elevation — designed to sit correctly within the roofline and the planning constraints typical of the area.
Planning drawings, building-regulations and party-wall paperwork are prepared and submitted by our own team — including for conservation-area or listed properties where extra consent is needed. One point of contact owns both the approvals and the build, so nothing falls between an architect and a separate contractor.
No subcontractor juggling. From the first sketch through structural engineering to final snagging, your project moves through people who all sit in the same office and answer to the same project manager.
You pay in stages, only after each stage is signed off. Variations only happen when scope genuinely changes — and they go through written authorisation, never a verbal "while we are at it".
lofts DPS completed a unique loft conversion in Putney, London, creating a modern white kitchen and terrace in the attic space. The traditional and modern design elements blended seamlessly to create a beautiful and functional
lofts A family of four in Surrey was expecting a new addition to their family and needed to expand their living space. They contacted DPS Ltd. to discuss their options for a loft conversion. After consultation, the family deci
lofts After consultation with DPS, the client decided to go ahead with the project, which included a loft conversion, a rear kitchen extension with a flat roof, and a complete refurbishment of the house.
Yes — Chelsea (SW3) is well within our Kensington and Chelsea working area. We typically deliver several loft conversions projects across this borough each year.
End-to-end (consultation → handover) usually 8–14 weeks. Build phase alone is shorter — most loft conversions sites complete in 8–18 weeks depending on scope and finishes.
Typical range: £60k–£140k typical. Our online calculator gives you a tighter figure based on your house type and ambitions; the fixed quote follows a free site visit.
It depends on the property. Many loft conversions fall under permitted development, especially in Kensington and Chelsea. Where planning is needed (conservation areas, listed properties, larger schemes), we handle the application end-to-end.
Many lofts fall under permitted development if you stay within volume limits. Conservation areas always need full planning. We handle either route.
You need at least 2.2m of head height in the existing loft. We measure on the first visit and confirm what conversion fits.
Most of the work happens upstairs, with rooflight access for materials. You stay in your home throughout.
Free 2-minute calculator + a fixed-price quote within one working day after a site visit
