The 10 loft conversions from Google's results for South London, ranked on Google rating, online presence and other factors. Updated 10 September 2026.
on GoogleBeckenham
CS Lofts, based in Beckenham, converts lofts in Croydon, Selsdon, Sanderstead, Addington, New Addington and Hamsey Green. It builds Velux, hip-to-gable, mansard and dormer conversions, adding home offices, en suite bathrooms and extra bedrooms to houses without the owners having to move.
020 3659 8980 Erindale Court, 15 Copers Cope Rd, Beckenham BR3 1NE
on GoogleWorcester Park
South London Loft Conversions provides loft conversion services in Worcester Park.
07520 637601 15, 159A Central Rd, Worcester Park KT4 8DT
on GoogleSouth London
South London Conversions delivers building projects for residential and commercial properties across South London. Their trades encompass attic conversions, kitchen extensions, general refurbishments, and new property builds.
on GoogleNorwood, London
Visionary Lofts installs loft conversions for residential properties across Norwood and South West London. The firm manages each project directly to expand living space in existing roof structures. Complimentary consultations are available for homeowners looking to convert unused areas.
020 3442 8505 83 Tivoli Rd, Norwood, London SE27 0EE
on GoogleBuckhurst Hill
Bespoke Lofts constructs attic conversions and home extensions for properties throughout North London. The company handles end-to-end project management, converting disused roof areas into extra living space.
0800 783 9456 188 Queen's Rd, Buckhurst Hill IG9 5BD
on GoogleChiswick, London
Touchstone Lofts provides attic transformations and home extensions, covering everything from architectural design and planning to building work. Its projects include dormer, mansard, hip-to-gable, and rooflight conversions for various house types, as well as structural engineering services.
020 7870 1117 2 Watchfield Ct., Sutton Ct Rd, Chiswick, London W4 4NA
on GoogleSouth London
Simply Loft carries out home extensions and attic conversions for properties across West London, including Richmond, Acton, and Chiswick. The team manages the full process from initial consultation to structural completion to expand living space.
on GoogleLondon
Our guide to loft conversion in North London provides planning, design, and building guidance for loft conversions and house extensions across South East and South West London. It covers dormer, Velux, rear, and wraparound structural projects.
020 8068 4811 5th Floor, 241 Southwark Bridge Rd, London SE1 6FP
on GoogleLondon
South London Lofts builds roof conversions across South London, including mansard, dormer, L-shaped and hip-to-gable styles. The firm handles architectural drawings, party wall agreements and full fitting of en-suite bathrooms and roof terraces.
020 8673 4114 36-38 Old Devonshire Rd, London SW12 9RB
South London
Plus Rooms provides house and kitchen extension services to homeowners in Richmond-upon-Thames and across South West London. The company manages projects from design through to construction, handling planning regulatory requirements along the way. Its team also builds loft conversions.
In South London, velux / rooflight typically costs £29,000 – £40,500. Labour in Greater London runs 16% above the UK median, which accounts for most of the difference from the same job elsewhere.
These are the firms from Google's results for "loft conversion south london". They are ranked on Google rating, online presence and other factors.
The figures above are South London ranges. These explain what drives them, so you can read a quote properly.
Loft conversion prices by type for 2026, including VAT, with London figures, the fees and extras a builder's quote leaves out, and when planning permission applies.
When a loft conversion needs planning permission in England, the 40 and 50 cubic metre limits for dormers, what a certificate costs, and the rules in Wales, Scotland and Northern Ireland.
What a dormer loft conversion costs in 2026, the dormer types, whether your loft has the height, the planning and building regulations rules in each nation, and how long it takes.
Usually not. Most fall under permitted development if you stay within 40 cubic metres for a terrace or 50 for a semi or detached, do not go above the existing roof ridge, and use materials in keeping. Mansards and anything on a flat or in a conservation area normally do need permission.
Six to eight weeks for a dormer once work starts, plus four to eight weeks beforehand for drawings, structural calculations and building control. Scaffolding usually goes up a week ahead.