Dormer Loft Conversions
Add maximum headroom, usable floor space, and natural light with bespoke rear or L-shaped dormers.
Thoughtful loft conversions across Wandsworth and surrounding South-West London areas — from feasibility and planning regulations to a warm, light-filled room designed for daily life. One dedicated team designs, builds, and finishes every detail.
Tell us about your home and ideas. Our technical team will call you to discuss feasibility and arrange a site survey.
Choose the structural route that best fits your period home, roof structure, and budget.
Add maximum headroom, usable floor space, and natural light with bespoke rear or L-shaped dormers.
Reconfigure hipped roofs or period rooflines into expansive, full-height rooms with architectural character.
Cost-effective, non-intrusive conversions preserving existing exterior rooflines under Permitted Development.
Resolve sagging rafters, timber rot, structural joist strengthening, and party wall chimney tie-ins.
Warm-roof PIR thermal insulation, airtight vapour barriers, and heavy-duty structural load-bearing boarding.
Slates, tiles, high-grade flat roof coverings (EPDM/GRP), gutters, and hand-formed lead flashings built to last.
From Victorian side-returns to full-width kitchen extensions, our structural team coordinates architectural drawings, steel calculations, and build stages from foundation to finish.
Extend into garden space with full-width single-storey extensions, bifold doors, and level patio thresholds.
Reclaim unused side alleys on Victorian and Edwardian terraces to create wide, open-plan living and dining areas.
Combine rear and side return extensions for the maximum possible ground-floor footprint expansion.
Design light-filled architectural kitchen hubs with roof lanterns, structural steelwork, and bespoke glazing.
Add ground-floor living area plus first-floor master suites and family bathrooms for growing households.
Remove internal load-bearing walls with precision-engineered steel RSJs for fluid, contemporary open-plan spaces.
Meeting your needs is our specialty. Check out our recent projects to see our high-quality execution firsthand.
Wandsworth's mix of Victorian terraces, 1930s semis, and period conversions each behave differently under a tape measure. A standard terrace usually suits a rear dormer; a semi with a hipped roof often has room for a hip-to-gable extension. We establish this accurately at survey stage.
The person who surveys your loft is directly involved in design, build, and final sign-off. There is no separate sales team promising unrealistic timelines — structure, insulation, stairs, electrics, and finishes are planned cohesively together.
We handle Permitted Development certificates, conservation area approvals, party wall notices, and Wandsworth Council Building Control inspections from submission through to final completion certification.
Transparent pricing with detailed stage breakdowns before any structural work begins. Milestone payments are strictly linked to verified build progress, ensuring clarity, security, and no surprise add-ons.
Most homeowners remain comfortably living in their homes during works. We access the roof externally via scaffolding for the heavy structural stages, installing dust seals and protection before opening up stairs.
Every completed conversion carries our comprehensive workmanship guarantee and is fully backed by £5,000,000 Public Liability and Professional Indemnity insurance for total long-term assurance.
Period terraces, hillside homes, and compact urban roofs each require a distinct conversion approach.
Victorian terraces, rear dormers, family bedrooms and practical roof-space design.
Period homes, larger roof spans, thoughtful staircases and bright loft rooms.
Compact terraces, rooflights, storage and conversions designed around daily life.
Character homes, party-wall coordination and carefully managed loft builds.
A clear sequence from first enquiry to finished room.
Tell us about your property, goals and what you want the loft to become.
We review head height, roof structure, access, planning context and likely options.
You receive a practical scope covering design, approvals, insulation and build stages.
Our team coordinates the conversion from opening-up to a clean, finished room.
"They talked us through hip-to-gable versus a straight rear dormer before we signed anything, and were honest that the gable option wasn't worth the extra cost for what we wanted."— Homeowner, Wandsworth Town
"Managing a period conversion isn't simple, but they knew exactly what the conservation officer would and wouldn't sign off on."— Landlord, Putney
"One point of contact from the first call to the final coat of paint. No chasing subcontractors, no surprises on the invoice."— Homeowner, Balham
It depends on the type of conversion, roof size, and finish specification. A rooflight-only conversion is the least expensive option; a mansard or L-shaped dormer with ensuite sits at the higher end. You get a written quote after survey, broken down by stage.
Many loft conversions fall under permitted development rights. That changes if you are in a conservation area, have an Article 4 direction, or exceed permitted development volume limits. We verify this during our initial survey.
A straightforward rear dormer conversion typically takes 6–10 weeks once work begins on site. Larger projects — mansard conversions or ones requiring full planning approval — take longer once planning determination time is factored in.
Most homeowners stay in the property throughout. We seal off the work area and manage access so the rest of the house stays usable, though there will be noise during structural stages.
Let's explore the space above your home. Request a call back from our technical team for an initial phone consultation and site survey booking.