Loft conversions, house extensions, renovations, basements and new builds across London and Hertfordshire.
Services
Loft conversions, house extensions, renovations, basements and new builds across London and Hertfordshire.
Services
Loft conversions, house extensions, renovations, basements and new builds across London and Hertfordshire.
Services
Loft conversions, house extensions, renovations, basements and new builds across London and Hertfordshire.
Services
Call 020 8037 7332 or get an instant estimate online.
Where we work
Extensions, loft conversions and renovations across London and Hertfordshire
LCCL Construction is based in Finchley N3, so most of our extensions, lofts and renovations are within 45 minutes of the office and Anderson can be on site when it matters. Choose your part of London or Hertfordshire below for local prices, planning rules and recent projects — or go straight to a specific area further down.
Every area we cover
Find your area
Each area page covers the council’s planning rules for extensions and lofts (conservation areas, Article 4 directions, size limits), 2026 prices for that postcode, a real LCCL project nearby and the questions local homeowners ask us most. Not listed? We still cover it — call 020 8037 7332.
“Extension built by LCCL Construction. We have just recently completed our ground floor house extension on our semi-detached home in Finchley. The services we used were for the design and build of the extension which is three meters and the full breadth of…”
EVA HALL · Trustpilot
“We are very happy with the services from Lccl, Alex has done a great job on design and construction. We have used Lccl in the past for our rear house extension and have come back to instruct Lccl for our loft conversion too to our house in North London. As…”
Mia M · Google Reviews
“Everyone at LCCL Construction was skilled, trustworthy and worked to the highest standard. I am delighted with our loft conversion, it is exactly what we wanted and I highly recommend the company - they have transformed the quality of my home. Overall it…”
KashImaging · Google Reviews
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