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.
Our team · Finchley N3
The people who design, engineer and build your project
LCCL Construction is a design and build team based in Finchley, North London, founded by Aleksandar Madari — Anderson — in 2004. Our architects, chartered structural engineer, project managers and construction teams work under one contract, so the people who draw your extension or loft are the people who build it. This page is who you will be dealing with.
A free 30-minute phone call with our team, no obligation.
Founded
2004 · Finchley N3
Awards
LABC 2024 & 2026
Reviews
4.7/5 · 200+ verified
Coverage
London & Herts
Who we are
Built in Finchley, working across London and Hertfordshire
LCCL Construction was founded in 2004 by Aleksandar Madari (Anderson) and incorporated in December 2018 as Loft Conversion Company London Limited (Companies House 11713461, VAT no. GB404461526) — LCCL are its initials. The company has had the same director, the same team and the same office at Hathaway House, Popes Drive, Finchley, London N3 1QF since incorporation. We design and build loft conversions, house extensions, whole-house renovations, basements and new homes.
The idea has not changed in twenty years: the people who draw the project are the people who build it. No hand-off between an architect who has never built and a builder who has never designed, no gap in responsibility when the steel arrives, and one project manager from the first sketch to the completion certificate.
We are an LABC Registered Partner and a member of the National Federation of Builders. Our Bohun Grove EN4 project won the LABC Building Excellence Award 2024 for Best Residential Extension in London, and Weech Road NW6 won the 2026 London regional award for Best Conversion or Alteration to an Existing Home.
2004
Founded in Finchley, North London — 20+ years of design and build
2
LABC Building Excellence Awards — 2024 (Best Residential Extension, London) and 2026 (Best Conversion or Alteration, London regional)
4.7/5
200+ verified reviews across Google, Trustpilot, Houzz, Yell and Reviews.io
7 yrs
Best of Houzz Service 2020–2024 and 2026 — six awards
How we work
What "design and build" means at LCCL
One contract
Survey, drawings, planning, structural calculations, building regulations, party wall, construction and guarantees in one agreement with one company. Design & build →
Itemised estimate
Every project is priced from a measured survey, line by line — design, planning, structure, construction and warranty — before you sign. Start with the instant estimate →
Approvals before the build
Nothing starts on site until planning, LABC full-plans approval and party wall are signed off. How planning works →
One point of contact
One project manager from the first sketch to handover, with a weekly progress update. Our construction process →
The team
Who you will be working with
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Aleksandar Madari (Anderson)
FOUNDER · ARCHITECTURE & PROJECT MANAGEMENT · 20+ YEARS
Aleksandar Madari — Anderson to everyone he works with — founded LCCL Construction in 2004 and brings over 20 years of hands-on experience in architecture, construction and project management.
He oversees every project from initial design through to completion. His background spans architectural design, planning applications, structural engineering and on-site construction management, with particular expertise in loft conversions, house extensions and new builds across London and Hertfordshire.
Amelia Taylor
ARCHITECTURE & PROJECT MANAGEMENT · 16 YEARS
Amelia Taylor has over 16 years of experience in architecture, project management and construction.
She manages the design and delivery of projects from initial consultation through to handover, coordinating with architects, engineers and construction teams throughout. Amelia specialises in residential projects including loft conversions, house extensions, renovations and new builds, with a strong track record of delivering work on time and to a high standard.
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Sarah
ARCHITECT · ARB · RIBA
Sarah handles architectural design, concept development, planning permission applications and building regulation submissions.
Her detailed knowledge of local authority planning guidelines across London and Hertfordshire enables her to achieve a high rate of planning approvals. Sarah produces technical drawings for loft conversions, house extensions, new builds, basements, renovations and outbuildings.
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Steven
ARCHITECTURE & SURVEY · MCIOB · FPWS
Steven handles architectural design, concept design, planning applications, building regulations approvals and technical drawings.
He works across loft conversions, house extensions, new builds, basements, renovations and outbuildings. Steven is a member of the CIOB and the Faculty of Party Wall Surveyors (FPWS), and his knowledge of London and Hertfordshire councils helps us achieve a high rate of planning approvals.
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Graig
ARCHITECTURE & SURVEY · BA ARCHITECTURE · ARB
Graig handles architectural design, concept design, planning applications, building regulations approvals and technical drawings for loft conversions, house extensions, new builds, basements, renovations and outbuildings.
With close attention to detail, Graig has many years of experience developing new builds and remodelling residential and commercial properties. He holds a BA in Architecture and is registered with the ARB.
Julie
STRUCTURAL ENGINEER · MEng (Hons) · CEng MIStructE
Julie is a chartered structural engineer (CEng MIStructE) with a Master’s degree in Engineering, working with LCCL through HLS Structural Engineers. She prepares the structural calculations, beam specifications and foundation designs for our projects.
Her work ensures every build meets building regulations and is structurally sound, covering steelwork, load-bearing walls, foundations and roof structures.
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Nic
STRUCTURAL ENGINEER · HNC CIVIL ENGINEERING
Nic holds an HNC in Civil Engineering and works alongside Julie at HLS Structural Engineers on the structural design of LCCL projects.
He produces structural drawings, calculations and specifications, with particular experience in residential substructures, superstructures and retrofit structural work for loft conversions and extensions.
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Leyla
PARTY WALL SURVEYOR · FPWS
Leyla is a member of the Faculty of Party Wall Surveyors and looks after the party wall side of LCCL projects.
Party wall notices, party wall surveys and schedules of condition, party wall agreements, serving the party wall award and liaison between the owners’ surveyors.
On-site management
SITE MANAGERS · 50+ YEARS COMBINED
David, John, Nick and Simon make up our on-site management team, with a combined 50+ years of experience in residential and commercial construction.
They coordinate day-to-day site operations, manage the trades, oversee quality and keep every project moving to schedule.
Trades
BUILDERS & CARPENTERS · EMPLOYED DIRECTLY
LCCL Construction employs its builders and carpenters directly, which keeps quality and accountability consistent from one project to the next.
The team handles brickwork, carpentry, roofing, plastering, tiling, flooring and general construction work.
Plumbers & electricians
PLUMBING & ELECTRICAL · GAS SAFE · NICEIC
We work with trusted Gas Safe registered plumbers and NICEIC certified electricians so that all plumbing and electrical work meets safety and compliance standards.
Partnering with specialist subcontractors keeps our core team focused on construction and project management.
Hip-to-gable loft, full-width rear extension, two new bathrooms, whole-house renovation, landscaping and a regulated outbuilding. LABC Building Excellence Award 2024 — Best Residential Extension in London. Read the case study →
Top-floor flat converted into a penthouse duplex: kitchen and living space moved into the new loft, two bathrooms, an extra bedroom. LABC Building Excellence Award 2026 — London Regional Winner, Best Conversion or Alteration to an Existing Home. Read the case study →
“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.”
Mia M · Google Reviews
“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
“LCCL Construction was the right company to help with my loft conversion. I heard of other people's challenging experiences with building works so I was very careful which company I chose. LCCL Constructions was professional, trustworthy and worked to the…”
KashImaging · Trustpilot
Questions about the team
What people ask before they book a call
One project manager, the same person from the first sketch to handover, with a weekly progress update in writing. If it needs Anderson, you get Anderson.
Yes. Our architects and chartered structural engineer draw and calculate what our construction teams build, all under one contract — that is what design and build means. If you already have an architect's drawings we can price and build from those.
From Finchley N3 we cover North, North-West, Central, South-West and West London and Hertfordshire, and we also work across the rest of London, Buckinghamshire, Surrey, Kent and Essex.
Two steps. The instant estimator gives you a range for your postcode and project in thirty seconds. Then one measured survey gives you a detailed itemised estimate — design, planning, structure, construction and warranty priced line by line — with no obligation.
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