Loft Conversion Builders in Tooting (SW17)
Professional loft conversion builders in Tooting, South West London.
Why Choose All Well for Loft Conversions in Tooting?
Tooting's Victorian terraces and Edwardian semis both lend themselves to loft conversions, and it's one of the most popular improvements we do in SW17. The terraces suit rear dormers that create a double bedroom with en-suite, while the Edwardian semis around Tooting Bec are ideal for hip-to-gable conversions that create even more space. Either way, you gain a bedroom without extending the building footprint — useful in an area where gardens are modest and every square metre counts.
Every project comes with a fixed-price contract, single project manager, and full certification including Building Control sign-off.
Loft Conversions for Tooting Properties
Tooting is known for its victorian terraces, edwardian semis, period properties. Our loft conversions services are tailored to these property types, ensuring results that complement the character of your home.
Postcodes we cover: SW17
Loft Conversions Tip for Tooting Homeowners
Wandsworth Council has clear guidance on dormer design — they want dormers to be visually subordinate to the original roof, set back from the party wall by at least 200mm, and finished in materials that complement the existing roof. We design all our Tooting dormers to these specs from the start. For the Edwardian semis, the hip-to-gable conversion needs the new gable wall to match the existing brickwork — we source reclaimed London stock bricks or tint new bricks to get a seamless match.
What a Tooting loft conversion typically covers
Three patterns cover most of what we build in SW17. Rear dormer on a Victorian terrace is the most common Tooting project. The terraces along Franciscan Road, Brudenell Road, Trinity Road, and Tooting Bec Gardens have steep cut-roof Victorian pitches with 2.4-2.6 metres at the ridge. A rear dormer creates a double bedroom with en-suite within the existing roofline. Cost is £48,000-£70,000 including structure, staircase, en-suite plumbing, electrics, plastering, and decoration. Build time 10-12 weeks. Permitted development under Class B covers the 40 cubic metre terraced allowance. Hip-to-gable on an Edwardian semi around Tooting Bec is the second pattern. The Edwardian semis with hipped roofs convert with a vertical gable wall replacing the sloping side roof, plus a rear dormer creating a full-width master bedroom with en-suite. Cost is £55,000-£82,000 including new gable brickwork sourced as reclaimed London stock or new bricks tinted to match the existing weathered colour. Build time 12-14 weeks. The mortar matches the existing — typically a soft lime-cement mix rather than modern Portland cement, which would look obviously new. Semi-detached properties qualify for the 50 cubic metre Class B allowance. L-shaped dormer on wider Victorian terraces is the third pattern, suitable on streets where the back addition supports a side dormer alongside the rear projection. Cost is £55,000-£80,000. Build time 12-14 weeks. Note: dormer-style rear roof additions that project beyond the original rear wall are specifically prohibited on some Wandsworth streets within the Tooting Bec Common conservation area — we check before quoting.
Wandsworth dormer rules, 9-inch party walls, and brick matching
Three Tooting factors define the planning and structural approach on most loft conversions. Wandsworth Council dormer design rules. Wandsworth has clear published guidance on dormer design: rear dormers must sit at least 300mm below the existing ridge, set back from the party wall by at least 200mm, set back from the eaves by at least 200mm, and not exceed 70-80 percent of the rear roof slope width. Materials must match the existing roof covering (typically slate on Victorian terraces, plain clay tile on some streets). Front-facing dormers are not permitted development. Wandsworth's design guide is one of the clearest in London and our submitted designs typically get approved without revisions because we don't push the limits. We design within the published parameters from day one. 9-inch solid brick party walls. Tooting Victorian terraces share 9-inch solid brick party walls with neighbouring properties on both sides for mid-terrace, one side for end-of-terrace. Loft conversions trigger Party Wall Act 1996 requirements where new floor structure ties into the party wall, where new openings are cut for steel beams, or where dormer construction crosses the party wall line. Notice must be served at least two months before work starts. We typically use the Agreed Surveyor route at £900-£1,500 single fee where neighbours dissent. Gable brick matching on Edwardian semis. The hip-to-gable conversion needs new brickwork matched to the existing facing — typically London stock brick or matching pressed brick depending on the property's original build. We source reclaimed London stock bricks where available (typically £1.20-£2.00 per brick reclaimed) or have new bricks tinted to match the existing weathered colour. The mortar matches the existing — typically a soft lime-cement mix rather than modern Portland cement which would look obviously new. Wandsworth's planning team checks brick matching at completion and an obvious mismatch can trigger enforcement.
Wandsworth Council process and project management
Tooting falls under Wandsworth Council, regarded as one of London's faster planning authorities. Permitted development under Class B covers loft conversions within volume limits — 40 cubic metres for terraced and 50 cubic metres for semi-detached or detached. We submit a Lawful Development Certificate (£103, 6-8 weeks at Wandsworth) on permitted development projects for written confirmation, which protects the property at sale time. Within the Tooting Bec Common or Totterdown Fields conservation areas, full planning at £206 applies and Wandsworth typically determines applications in 8-10 weeks (faster than the 13-week statutory limit). A Tooting loft conversion involves 9-12 trades over 10-14 weeks: structural steel install, joist and floor structure, dormer or gable carcassing, brick build-up matched to the existing London stock, slate or tile roofing matched to the existing covering, Velux rooflights and FENSA-registered casement windows, insulation (150mm PIR between rafters plus 50mm under to U-value 0.18 W/m²K under Building Regulations Part L), staircase joinery, plastering, NICEIC electrics (BS 7671), en-suite plumbing, decoration. We assign one project manager from survey through handover with photo updates. Fire safety follows Building Regulations Part B — protected escape route with FD30 fire doors on every habitable room along the route to the front door, mains-wired interlinked smoke alarms on every floor, 30-minute fire-resistant floor construction. Original ground-floor doors often need replacement to FD30 standard at £400-£600 per door fitted, included in the contract scope. Stair design follows Building Regulations Part K — 2 metres minimum headroom over the stair (alternating-tread or compact stair where space is tight), 42 degree maximum pitch. Fixed-price contracts cover labour, materials, structural engineer calculations (£600-£1,200 for the design pack), Building Control fees (£400-£600 at Wandsworth), FENSA glazing registration, party wall surveyor coordination (Agreed Surveyor route on terraces), conservation area applications where applicable, FD30 escape route door upgrades, gable brick matching with reclaimed or tinted bricks where applicable, and the Lawful Development Certificate or planning fee.
Loft Conversions in Tooting: What's Included
Loft Conversions Pricing in Tooting
£45,000 – £80,000
6–10 weeks | Fixed-price contracts | No hidden costs
What Our Customers Say
“All Well managed our project from start to finish. The fixed-price contract meant no surprises, and the result is stunning.”
Verified Customer
Tooting
“Professional team, clear communication throughout. They handled everything including Building Control sign-off.”
Verified Customer
Tooting
Frequently Asked Questions
- How much does a Tooting loft conversion cost?
- Rear dormer on a Victorian terrace (the most common Tooting project) runs £48,000-£70,000 including structure, staircase, en-suite plumbing, electrics, plastering, and decoration. Hip-to-gable on an Edwardian semi around Tooting Bec runs £55,000-£82,000 including reclaimed or tinted brick matching for the new gable. L-shaped dormer on wider terraces runs £55,000-£80,000. FD30 escape route door upgrades are £400-£600 per door. Party wall surveyor (Agreed Surveyor route) is £900-£1,500. Conservation area full planning adds £206 in fee and 2-4 weeks of lead time over a standard Lawful Development Certificate. Fixed-price contract before any work starts.
- What are Wandsworth's dormer design rules in Tooting?
- Wandsworth has clear published guidance. Rear dormers must sit at least 300mm below the existing ridge, set back from the party wall by at least 200mm, set back from the eaves by at least 200mm, and not exceed 70-80 percent of the rear roof slope width. Materials must match the existing roof covering (typically slate on Victorian terraces, plain clay tile on some streets). Front-facing dormers are not permitted development. Side-facing dormer windows to habitable rooms must be obscure-glazed and fixed shut up to 1.7 metres above floor level under the General Permitted Development Order. Dormer-style rear roof additions that project beyond the original rear wall are prohibited within the Tooting Bec Common conservation area on some streets. We design within the published parameters from day one and check the conservation area boundary on the Wandsworth planning portal at the survey.
- Why does the new gable need to match existing brickwork on a Tooting hip-to-gable?
- Because Wandsworth Council expects the new gable wall to read as a continuation of the existing brickwork rather than a modern addition. Permitted development under Class B requires materials similar in appearance to the existing house, and a visibly mismatched gable can trigger planning enforcement. We source reclaimed London stock bricks where available (typically £1.20-£2.00 per brick reclaimed) or have new bricks tinted to match the existing weathered colour. The mortar mix matches the existing — typically a soft lime-cement mix rather than modern Portland cement, which would look obviously new and harsh against weathered Edwardian brickwork. Wandsworth's planning team checks brick matching at completion. The matching cost is included in our fixed-price contract.
- Why hire All Well for a Tooting loft conversion?
- Three reasons. First, accuracy: we know the SW17 stock — Victorian cut-roof terraces, Edwardian hipped semis around Tooting Bec, the Wandsworth dormer design rules, the Tooting Bec Common conservation area boundary, and the London stock brick matching that Wandsworth's planning team expects. Second, full accreditation: NICEIC for electrical (BS 7671), FENSA for glazing, Gas Safe registered for boiler relocation, structural engineer calculations, and Building Control sign-off included on every project. Third, fixed-price contracts: the quote doesn't change unless the specification does, including reclaimed brick matching, party wall surveyor fees, and any conservation area applications. 57 verified Google reviews averaging 4.5/5. Office on Limes Avenue, SE20.
Loft Conversions Near Tooting
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