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A two-storey extension to a 1912 house in Welwyn Garden City: kitchen and study below, master bedroom with en-suite above, with custom-made kitchens and CP Hart bathrooms.
Project facts
- House1912 detached
- Added+1,500 sq ft
- On site18 weeks
- Completed2020
- PlanningHouseholder planning (Welwyn Hatfield)
- Contract value£350k – £400k
Project type: Double-storey extension · Area: Welwyn Garden City AL7
What we did
- Two-storey rear extension
- Kitchen and study on the ground floor
- Master bedroom with en-suite above
- Custom-made kitchen, CP Hart bathroom
- Wood floors
Specification
CP Hart bathrooms · Custom-made kitchen · Wood floors
Design and build inclusive: architecture, structural engineering, planning, party wall, construction, project management and LABC sign-off under one contract.
Anderson's note
Welwyn Garden City has its own design code; a two-storey extension has to follow the roof pitch and materials of the original house exactly, and we drew it that way from the first sketch so planning was a formality.
Anderson, founder — LCCL Construction, Finchley N3
The client's view
“Professional, honest and understanding approach to our requirements. Highly recommend.”
Verified client · Trustpilot
As LABC Building Excellence Award Winners 2024 for Best Residential Extension in London, and 2026 London Regional Winners for Best Conversion or Alteration, every project runs under one contract with a 12-month workmanship guarantee, structural guarantee to building-control sign-off and a 10-year LABC Warranty available.
One team, one contract, one point of contact — from first sketch to handover.
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“The Lccl construction team built my extension with a quick and clean service, they worked non stop through the winter weather.. I would highly recommend this company!”
Chris Dunn · Google Reviews
“Rear house extension 6x3m and dormer loft conversion completed with LCCL Construction, finished the whole project in 14 weeks very happy with the outcome, highly skilled and experienced design and build company a perfect match for our house. Would highly…”
Fran S · Reviews.io
“Total refurbishment and side return extension in East Finchley. LCCL totally refurbished our 3-bed Victorian terraced house in East Finchley and built a new 5m side return extension. This means rewiring, re-plumbing, drainage, sewer, and waste. Building a…”
A Davidsson · Google Reviews