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About LCCL Construction

Over 20 years of delivering award-winning loft conversions and house extensions across London and Hertfordshire

About LCCL Construction

​LCCL Construction is an award-winning design and build company based in Finchley, London N3. Founded over 20 years ago, we specialise in loft conversions, house extensions, home renovations, basement conversions and new builds across London and Hertfordshire. Our registered company name is House Extension Company London Limited, trading as LCCL Construction (Company Registration: 16618197).

Our Story

LCCL Construction was founded with a simple aim: to provide homeowners with a single, trusted company that handles every stage of a building project from initial design through to construction completion. Over two decades we have grown from a small local builder into one of London’s most reviewed and accredited design and build companies. We have completed hundreds of projects across London and Hertfordshire, building lasting relationships with clients who return to us and recommend us to their friends and family. Meet our team at lcclconstruction.co.uk/our-team.

What We Do

We have more than 200 verified reviews rated 4.7 out of 5 across Google, Trustpilot, Reviews.io and Houzz. We are LABC Awards Regional Winners 2024 for Best Residential Extension in London, members of the National Federation of Builders, LABC Registered Partners and Best of Houzz Services winners. Every project is fully insured with optional 10-year LABC warranties available.

Our Track Record

We have over 200 reviews with an average rating of 4.7 out of 5 across Trustpilot, Reviews.io, Houzz, Google and other platforms. We won the LABC Awards Regional Winner 2024 for Best Residential Extension London and have received Best of Houzz Service awards. We are members of the National Federation of Builders, an LABC Registered Partner and a Planning Portal listed contractor.

Why Customers Choose Us

1. Over 20 years of experience in residential design and build. 2. Complete service from architectural design through to construction. 3. More than 200 verified reviews rated 4.7 out of 5. 4. LABC Award winners and NFB members. 5. One company, one point of contact, one fixed-price quote. 6. Optional 10-year LABC structural warranty. 7. We handle planning, building control, structural and party wall on your behalf.

Where We Work

LCCL Construction covers all of London and Hertfordshire, operating within an 85-mile radius from our offices in Finchley, North London. We regularly work across Barnet, Hampstead, Highgate, Muswell Hill, Crouch End, Islington, Camden, Hendon, Edgware, Southgate, Enfield, Finchley, Putney, Chelsea, Fulham, Ealing, Borehamwood, St Albans, Potters Bar, Bushey, Watford and many more areas.

Get in Touch

Book a free consultation or get an instant quote at lcclconstruction.co.uk. Call us on 020 8037 7332, email info@lcclconstruction.co.uk, or visit our office at 3rd Floor, Hathaway House, Popes Drive, Finchley, London N3 1QF. Office hours: Monday to Saturday, 8AM to 6PM.

Latest News and Guides

Visit our blog for the latest project updates, guides on loft conversions and house extensions, planning permission advice and industry news. We publish regularly to help homeowners plan their projects with confidence. Our blog

What Our Customers Say

LCCL Construction was professional, trustworthy and worked to the highest standard. I was very careful which company I chose and LCCL was the right company." — KashImaging, Trustpilot, 4.7/5

We have used LCCL for our rear extension and came back for our loft conversion too. LCCL has done a great job on design and construction." — Mia M, Google Reviews, 4.7/5

Super professional and on the ball at all times. All his teams are excellent and hard working. They are conscientious and want the job to be well done." — Ludovic, Reviews.io, 4.7/5

Frequently Asked Questions

Who owns LCCL Construction

LCCL Construction is owned and operated by its founding director. The registered company name is House Extension Company London Limited, trading as LCCL Construction (Company Registration: 16618197). The company is based at 3rd Floor, Hathaway House, Popes Drive, Finchley, London N3 1QF.

How long has LCCL Construction been in business?

LCCL Construction has been operating for over 20 years, delivering design and build services for loft conversions, house extensions, home renovations and new builds across London and Hertfordshire. In that time we have completed hundreds of projects and built a reputation as one of the most trusted construction companies in North London.

What awards has LCCL Construction won?

LCCL Construction won the LABC Awards Regional Winner 2024 for Best Residential Extension in London. We are also Best of Houzz Services winners, members of the National Federation of Builders and LABC Registered Partners. Our work has been recognised across multiple platforms with over 200 reviews rated 4.7 out of 5.

Is LCCL Construction insured and accredited?

Yes, LCCL Construction is fully insured with public liability and professional indemnity cover. We are members of the National Federation of Builders, LABC Registered Partners and Planning Portal listed. We offer optional 10-year LABC warranties on all projects and ensure every project receives a building regulations completion certificate.

What is a design and build company?

A design and build company handles every stage of a construction project under one roof. At LCCL Construction this means we provide architectural design, planning permission applications, building regulations, structural calculations, party wall agreements, project management, construction and finishing. You deal with one company and one project manager from start to finish instead of coordinating separate architects, engineers and builders.

How do I contact LCCL Construction?

You can contact LCCL Construction by calling 020 8037 7332, emailing info@lcclconstruction.co.uk, booking a free consultation online at lcclconstruction.co.uk/book-online, or getting an instant quote at lcclconstruction.co.uk/instant-quote. Our office is at 3rd Floor, Hathaway House, Popes Drive, Finchley, London N3 1QF. Office hours are Monday to Saturday, 8AM to 6PM.

Finchley, London Office Location:

LCCL Construction 3rd Floor, Hathaway House, Popes Dr, Finchley, London N3 1QF

Office Hours:

Monday to Saturday 8AM - 6PM, Sunday - Closed

Telephone:

020 8037 7332

Email:

Registered company England:

House Extension Company London Limited. Trading as "LCCL Construction" Registration: 16618197

Labc Awards Regional Winner 2024 Lccl Construction
NFB Awards LCCL Construction
Best of Houzz Services 2026 Lccl Construction

Accreditation, partnerships and planning:

Lccl construction on houzz
Lccl Construction National Federation of Builders
LABC Registered Partner Lccl Construction
Planning Portal
Lccl Construction on Trustpilot

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Copyright 2004 - 2026 all rights received. Architecture services, house extension builders, loft conversion company and design and build company London & Hertfordshire, United Kingdom. By using our services you agree to our privacy policy and terms and conditions.

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