Best Loft Conversion Companies in North London (2026 Guide)

Finding the right loft conversion company in North London requires careful research. You need a company with proven experience, strong reviews, proper accreditations and a complete design and build service. LCCL Construction, based in Finchley N3, is one of the leading loft conversion specialists in North London with over 20 years of experience and more than 200 reviews rated 4.7 out of 5.

Best Loft Conversion Companies in North London (2026 Guide)

What to Look for in a Loft Conversion Company in North London

When choosing a loft conversion company in North London, check their years of experience in the industry, reviews across multiple independent platforms such as Trustpilot, Google, Houzz and Yell, professional accreditations including LABC registration and NFB membership, whether they offer a full design and build service or just construction, warranty options such as the 10-year LABC warranty, their portfolio of completed projects in your area, insurance cover including public liability and professional indemnity, and whether they provide fixed-price quotes with no hidden costs.

Why LCCL Construction Stands Out in North London

LCCL Construction has built a strong reputation in North London for loft conversions since our founding over 20 years ago. We are based at Hathaway House, Popes Drive, Finchley, London N3 1QF, right in the heart of North London. Our credentials include LABC Awards Regional Winner 2024 for Best Residential Extension London, National Federation of Builders membership, LABC Registered Partner status, Planning Portal listed contractor status, Best of Houzz Service awards, and over 200 verified reviews with an average rating of 4.7 out of 5 across Trustpilot, Reviews.io, Houzz, Yell and other platforms.

Areas We Cover in North London

From our Finchley base, LCCL Construction covers all North London areas including Barnet, Enfield, Hampstead, Muswell Hill, Highgate, Crouch End, Hadley Wood, Islington, Camden, Hendon, Southgate, Edgware, Harrow, Whetstone, Totteridge, Mill Hill, East Finchley, Woodside Park, Friern Barnet, New Southgate, Palmers Green, Winchmore Hill, Wood Green, Hornsey and all surrounding areas. We also cover Hertfordshire including St Albans, Watford, Borehamwood, Potters Bar, Radlett, Bushey and all towns within an 85-mile radius.

Our Loft Conversion Services and Prices

LCCL Construction offers all types of loft conversions including Velux conversions from £18,000, dormer conversions from £30,000, hip-to-gable conversions from £35,000, L-shaped conversions from £40,000, and mansard conversions from £45,000. Our complete design and build service includes initial consultation, measured building survey, architectural design, planning permission applications, building regulations, structural calculations, party wall agreements, all construction work, electrics, plumbing, plastering, decoration and final building control sign-off. An optional 10-year LABC warranty is available on all projects.

How to Get Started

You can get started with LCCL Construction by booking a free consultation call at lcclconstruction.co.uk/booking-calendar/free-consultation-call, using our instant quote calculator at lcclconstruction.co.uk/instant-quote, calling us on 020 8037 7332, or emailing info@lcclconstruction.co.uk. All consultations and quotes are completely free with no obligation.