Why Choose Us?

Fully Detailed Quotes on Small, Mid & Large Projects

Located Locally 

Fully Qualified Team

No Upfront Payments

No Deposits

Guarantee 10 years

Insured and Accredited Construction Company

Efficient and Professional services

Construction Company London and Hertfordshire

Total Building and M&E Services Under One Roof

Fully Vetted and Accredited Engineers GAS SAFE and NICEIC REGISTERED

Planning Portal
Lodon and Hertforshire Construction Awards
National Federaion Of Builders Accredited
Get in touch with us:

Address:  Unit 720 Catalyst House, Centennial Park, Centennial Avenue, Borehamwood, WD6 3SY

Telephone: 020 8037 7332

**Attendance By Appointment Only.**

We Serve London and Hertfordshire 20 Mile Radius from our Base in Barnet and Borehamwood.


Loft Conversions Company, House Extensions, Builders in Barnet, Elstree, Bushey, Borehamwood, Hadley Wood, St Albans, Potters Bar, Brent, Camden, Ealing, Enfield, Hammersmith and Fulham, Harrow, Kensington and Chelsea, Rickmansworth and Hertfordshire. Builders in LondonNorth London and North West London.

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Copyright 2006 - 2020 All Rights Received. Company Number: 11713461.

House Extension Builders and  Loft Conversion Company London & Hertfordshire

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Welcome to Lccl Construction London & Hertfordshire

Your Trusted Local Construction Specialists Company and Builders for:

House Extensions
- Rear Extensions
- Side Extensions
- Two storey extensions
- LABC 10 Year Warranty
- No Deposit Required
- Plumbing and Electrical Packages
-Design Build
Loft Conversions
- Dormer Lofts
- Mansard Lofts
- Hip to Gable and Velux
- LABC 10 Year Warranty
- No Deposit Required
- - Plumbing and Electrical Packages
- Design Build
Design and Build
- Design Build London and Hertfordshire
- Design Build Loft Conversions
- Design Build House Extensions
- Design Build New Houses
- LABC 10 Year Warranty
- Local Authority Building Control Partner
- Party wall and Structural Drawings
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Have a Building Project?

Send Us Your Project Enquiry Today!

We offer building services, design services and design & build services combined including:

1. Loft Conversions & Roofing - (Dormer Loft Conversions, L Shape Loft Conversions, Mansard Loft Conversions, Hip to Gable Loft Conversions or Velux Loft Conversion)

2. House extensions - all types (single story extensions, double story extensions, rear and side extensions, side return house extensions, wrap around house extensions, single or double house extensions)

 3. Design and Build Total Project Start To Finish - Design and build of Loft conversions, House Extensions and New House Builds.

4. New House Builders and Residential - We design and carry out construction of new house schemes including developments.

LABC 10 or 12 Year Warranty

We specialise in design, building and construction of house extensions, loft conversions and new houses builds for residential customers.

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