The 10 loft conversions from Google's results for Barnet, ranked on Google rating, online presence and other factors. Updated 10 September 2026.
on GoogleBarnet
The Loft Converter builds attic conversions, house extensions, and home refurbishments across London, Essex, and Hertfordshire. The business works on residential properties to create additional bedrooms, bathrooms, and living areas.
020 8361 7458 153 High St, Barnet EN5 5SU
on GooglePotters Bar
Abbey Lofts completes attic conversions and extensions across East London, handling dormer, mansard, hip-to-gable, and Velux projects. Its services also encompass wrap-around and rear home extensions for various property styles, from terraced houses to bungalows.
020 3581 0354 1 Whaley Rd, Potters Bar EN6 2RA
on GoogleCroydon
SimplyEasy Refurbs builds dormer loft conversions and home extensions across Wandsworth and broader London areas. Its construction projects focus on increasing usable living area and natural light through custom roof transformations.
020 3648 9687 Airport House, 265 Purley Way, Croydon CR0 0XS
on GooglePopes Dr, London
LCCL Construction is a design and build company converting lofts, extending houses and renovating homes across East London. It works in areas such as Hackney, Walthamstow, Leyton and Bow, where much of the housing is Victorian terraces, and provides architectural design as part of its service.
020 8037 7332 3rd Floor, Hathaway House, Popes Dr, London N3 1QF
on GoogleBarnet
Built IQ delivers loft conversions and home extensions across St Albans and Barnet. The team manages project planning, design, and construction to convert unused attic space into residential rooms or practical storage areas.
on GoogleLondon
Bigness Group designs and builds attic conversions, structural additions, and interior fit-outs for residential properties in Barnet and North London. Projects include creating master bedroom suites complete with private bathrooms and built-in storage.
020 7183 5768 Ste Ra01, 195-197 Wood St, London E17 3NU
on GoogleLondon
Extending residential properties across London, Pro Ficiency Ltd provides design and construction services for side return, rear, and wraparound home extensions. The team coordinates architects, builders, and interior design consultations to reconfigure living areas.
020 7435 6231 31 Fortune Green Rd, London NW6 1DU
on GoogleBarnet
Barnet Loft Company carries out loft conversions, kitchen extensions, and bathroom refurbishments across North, West, and North West London. The team provides complete project management from initial design concepts through to final construction.
on GoogleBarnet
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.
Loughton
Co Ncept Lofts builds loft conversions for properties in Romford and neighbouring regions. Services include initial site surveys, room layout designs, and complete structural construction carried out by experienced builders.
020 3674 5284 124 Church Hill, Loughton IG10 1LH
In Barnet, 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 barnet". They are ranked on Google rating, online presence and other factors.
The figures above are Barnet 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.