LCCL Construction

Name: LCCL Construction
Address: 3rd Floor, Hathway House, Popes Dr, Finchley,, London, N3 1QF, United Kingdom
Telephone: 020 8037 7332
Rating: 4.9

67 Reviews

Loft Conversion Specialists

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About Us

LCCL Construction: award-winning design and build for house extensions, loft conversions, renovations and new builds across London and Hertfordshire. We are LCCL Construction, a design and build company based in Finchley, North London. For over 20 years we have helped homeowners across London and Hertfordshire transform their homes — from kitchen extensions and loft conversions to whole-house renovations, basements and new builds. What makes us different is simple: one team takes your project from the first drawing to the completion certificate. Architectural design, structural engineering, planning or permitted development, party wall matters, building control and construction are all under one contract, one fixed price and one point of contact — no gap between the people who design it and the people who build it, and no surprises on price. Our services include rear, side return, side, wraparound, kitchen and double-storey extensions; dormer, hip-to-gable, L-shaped, mansard and Velux loft conversions; full renovations; garage and basement conversions; and new builds. Most lofts and single-storey extensions are built under permitted development with a fixed price from £32,400 and £42,000 inc. VAT respectively, Lawful Development Certificate included. LABC Building Excellence Award Winners 2024 (Best Residential Extension in London) and 2026 London Regional Winners (Best Conversion or Alteration to an Existing Home). Rated 4.9 out of 5 across 67 verified Houzz reviews and Best of Houzz Service winners six years running. Members of the National Federation of Builders and LABC Registered Partners. Every project carries a 12-month workmanship guarantee and a 10-year LABC structural warranty. Call 020 8037 7332, book a free consultation call, or get an instant estimate at lcclconstruction.co.uk

Awards

LABC Building Excellence Award Winner 2024 — Best Residential Extension in London (Bohun Grove, East Barnet) LABC Building Excellence Awards 2026 — London Regional Winner, Best Conversion or Alteration to an Existing Home (Weech Road, NW6) Best of Houzz Service Award — 7 consecutive years (2020–2026

Projects

Design ideas for a large and white modern render semi-detached house in London with three floors, a hip roof, a tiled roof and a black roof.

67 Reviews for LCCL Construction

Newest first

4.9|67 reviews

Work Quality

4.9

Communication

4.9

Value

4.8

Ludovic

Alex is super professional and on the ball at all times. He always thinks ahead and won't let you down. All his teams, from bricklayers, carpentry to electrics, roofing, tiling, painting, flooring and plumbing are excellent and hard working. They are all friendly yet professional. They are conscientious and want the job to be well done. Would really recommend this company that has a lot of experience working across London and with the different Councils, especially with garden and loft extensions. We are very happy with our loft extension which includes a brand new kitchen. LCCL showed great attention to detail. They did a fantastic job!

5 February, 2025

Loft Conversion

LCCL Construction were very professional throughout our loft conversion. Alex and his team are very responsive, easy to contact and very knowledgeable. LCCL made the process very straightforward and nothing was too much trouble. Alex has a wealth of experience and his team of trades people (carpentry, roofing, electrics, pluming, tiling, painting) are highly skilled and experienced. I would highly recommend them as a reliable, trustworthy and professional building company. We are very happy with the finished product

5 February, 2025

Matt H

We chose LCCL construction to design and build a new kitchen extension for us on our home in Barnet. The team were thoughtful, professional and easy to work with throughout. I am very happy with all aspects both the design and the build have been completed to a very high standard.

10 September, 2024

Sarah Johnson

We have recently completed our project with LCCL construction and are very happy with all aspects of the architectural stages and the build itself. Our project comprised of a loft conversion and kitchen extension on our recently purchased house in Finchley. We chose LCCL as we were impressed with previous projects we saw online and we have been happy with the quality, care and skill which they have shown in all elements of our project.

21 August, 2024

David Dl

House extension design and build services from LCCL construction, was professional, trustworthy on time and budget. Found them to be very reliable, do as they say and make sure all is to the high standard of finish. We heavily relied on them to deliver the project successfully as we both work full time and have a daughter with no time for build, LCCL construction construction made sure all it is executed perfectly to our expectations and timelines, design took 3 months, the build itself construction part was completed very quickly within a month whole extension was build externally and internally took a other month and half including kitchens and windows which was very impressive. Would highly recommend.

16 August, 2024

Matt-El

I'm very happy to have found and hired LCCL who recently completed work on my home after a painful experience with a different local architect and then another building contractor. In just over 6 months LCCL they managed to transform my damp, musky, 1900s mid-terrace house in dire need for repair into a clean and modern living space - loft conversion, full rear extension, patio, outside rendering fixes, new doors and windows and complete electrics and plumbing rehaul - plus the removal of that horrible woodchip wall and ceiling interiors everywhere. The shear scale of my home project meant I hired LCCL for their complete management and oversight as I could no longer be there all the time due to work. This included overseeing building control assessments, advising and managing boundary wall party agreements, architects, structural engineers, bathroom and kitchen designs. They used the highest quality grade materials at reasonable prices and trusted 3rd parties which they obviously have successful history with and the difference in quality is truly noticeable - my original extension before this was only 9 years old and yet was already crumbling compared to now which is completely solid. And when costs did escalate due to many unforseen circumstances, LCCL identified and discussed options and compromises early on to keep on plan, taking the time to answer all my questions for me to understand the builder terms and identifying what exactly I'm getting over WhatsApp, phone-call or in-person on-site. Not being a builder myself meant this questionning happened a lot. Great regular updates with photos throughout the entire build and excellent quality finishes, they only stop with the finish as if it was their own home. Highly recommended.

29 July, 2024

Comment from LCCL Construction:

Thank you very much for the lovely comments it is very much appreciated, we always strive to do our best and work to high standards for all our customers, we wish you all the best from all team at Lccl Construction.

HU-882196724

Done excellent job with our extension including. Design and build trustworthy, professional and highly reliable to get the job done. Highly recommended

10 April, 2024

Anthony George

Loft conversion, house extension and interior renovation completed to our home in Whetstone, North London. We are very happy with the results that LCCL construction designed and build for us. LCCL construction has been very professional in their approach but also friendly and we got on very well. the whole house has been pretty much demolished and rebuilt. Overall our experience is a positive one and would highly recommend.

23 February, 2024

Helen Orth

Wonderful ground floor extension design and build, very happy with the outcome. The whole design and build process was professionally completed and signed of by building control and planning obtained. Durring the build, building team was working very hard every day, the management made the whole build work like clockwork, the project finished on budget and ahead of time. Lccl construction is an excellent construction company to work with and would highly recommend.

21 February, 2024

Sabrina Smith

Loft conversion design and build completed to high standard. Trustworthy, professional, tidy and very well organised construction company. The building work was completed on time and budget. The whole process was pretty smooth design, planning to construction. Would highly recommend.

21 February, 2024

Comment from LCCL Construction:

Daniel Freedman

We engaged with LCCL Construction to get our loft conversion and house extension project going. The whole process was explained to us in a straight forward way including how the design stages work, timescales, what to expect during the build and the costs involved. We signed up for the full architecture design and construction services as we preferred to have everything delivered by one company. Our home now has an extra bedroom, bathroom and new very large kitchen/social space. We are exceptionally happy with the quality of the build, the communication throughout all various processes and the speed and diligence with which the team worked. I know that much value has been added to our home which is a great comfort if we were to sell the gain would be greater than what we have spent, however we are so happy with the house that we intend to enjoy living in it for the foreseeable.

16 January, 2024

Comment from LCCL Construction:

Alexander Stevenson

Lccl team has delivered high quality loft conversion to our out property and internal remodeling, we are very happy with the results and are now planning a future ground floor extension too with LCCL. Would highly recommend. Amelia was our project manager with her experience and her team of trades and builders the project was delivered within the allocated budgets and time frames. The build itself is of of high quality and found LCCL to be reliable and trustworthy very easy to deal with.

15 January, 2024

Comment from LCCL Construction:

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Business Details

Business Name

LCCL Construction

Phone Number

020 8037 7332

Website

www.lcclconstruction.co.uk

Address

3rd Floor, Hathway House, Popes Dr, Finchley,
London N3 1QF
United Kingdom

Typical Job Cost

£50,000 - £500,000

Followers

16 Followers

Socials

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Services Provided

Loft Conversion

House Extensions

Loft Restoration

Architecture

Architecture Design Services

Custom Build Home

Custom House Builders

Design and Build

Design and Planning

Home Renovation

House Builder

Loft Conversion Company

Loft Conversion Specialists

Party Wall Agreements

Project Management

Structural Calculations and Design

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Areas Served

Camden

Enfield

Essex

Southgate

Saint Albans

London

Hampstead

Oakwood

Putney

Barnet

Borehamwood

Bounds Green

Central London

Cockfosters

East Barnet

East Finchley

East London

Edgware

Elstree

Finchley

Finchley Road

Friern Barnet

Fulham

Greater London

Hadley Wood

Hampstead Heath

Haringey

Hemel Hempstead

Hendon

Hertfordshire

High Barnet

Highgate

Islington

Maida Vale

Mill Hill

Muswell Hill

North Finchley

North London

Potters Bar

Radlett

South London

Walthamstow

Wandsworth

Watford

West London

Wood Green

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Credentials

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1 Ideabook

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8 Comments

Commented: Help with open plan layoutLovely property like this could use a lovely side infill extension, then converting garage into study and utility House Extension would resolve the awkward irregular shape of the rear by having it ...

14 December, 2021 in Design Dilemma

Commented: Help with front exteriorat the elevation on the drawings you have glass on either side of the door or double door making your entrance grand already what did you have in mind?

18 August, 2021 in Design Dilemma

Commented: What professionals do we need?Hi both really, engineers would asses whether it is load bearing and issue adequate structures for it load or non load. Unless you have a skill to tell whether it is load bearing or not I would leave ...

16 August, 2021 in Design Dilemma

Commented: Loft conversiontry our instant quote calculator for loft conversion and home extension https://www.adconstructionlondon.co.uk/instant-quote Assuming you are planning hip to gable loft conversion, you can find out a...

9 August, 2021 in Design Dilemma

Commented: Third bedroom extension - advice appreciated!at 185cm this is very low, so have to lower first floor ceiling you might aswell change the whole roof at this point, for you to have a cost that is accurate you need to have set of architecture pla...

8 August, 2021

Commented: Could these be asbestos vinyl floor tiles ?possibly get it tested to be sure i think is the best option, i would not try and remove it

20 July, 2021

LCCL Construction