Architectural Design and Planning Services London
Award-winning design and build architecture covering London and Hertfordshire
LCCL Construction provides complete architectural design and planning services for loft conversions, house extensions, home renovations, basement conversions and new builds across London and Hertfordshire. With over 20 years of experience and more than 200 verified reviews rated 4.7 out of 5, we deliver award-winning design and build services from a single point of contact.
Our in-house architectural team handles every stage of the design process: initial consultation, measured building survey, architectural drawings, planning permission applications, building regulations submissions, structural engineer calculations and party wall agreements. As LABC Registered Partners, we work directly with local council building control teams to ensure smooth approvals.
We are LABC Awards Regional Winners 2024 for Best Residential Extension in London, members of the National Federation of Builders and Best of Houzz Services winners. Our design and build approach means your project is managed by one company from initial sketch through to construction completion, with architectural design starting from £750.
Based in Finchley, London N3, we cover all London boroughs and Hertfordshire within an 85-mile radius. Book a free consultation or get an instant quote at lcclconstruction.co.uk or call 020 8037 7332.
LABC Awards
Winners 2024
200+ Reviews
4.7 / 5 Rating
NFB Members
LABC Partners
Our design and build services
Our architectural team designs and delivers projects across all residential construction types. Click below to learn more about each service.
Our design and build process
Useful guides and cost information
Loft Conversions Planning Permission
Information about local planning permission guidelines on loft conversions loft planning
Loft Conversion
Cost
How much will it cost me, what are the costs associated with the loft conversions loft conversion cost
House Extension
Cost
How much will it cost me, what are the costs associated with the house extensions extension costs
Type of Loft Conversions
What type of loft conversions are there? Dormer Lofts, Hip to Gable Lofts type of lofts
Loft Conversion
Value
What will loft conversion add to my property value, how much value the loft add loft value
House Extension
Value
What will house extension add to my property value, house extension value extension value
House Extensions Planning Permission
Information about local planning permission guidelines on house extensions house extensions
Type of House Extensions
What type of house extensions are there? Single storey, side return type of extensions
Areas We Cover
Based in Finchley N3, serving London and Hertfordshire.
North London and Hertfordshire
Barnet | Finchley | Hendon | Muswell Hill | Edgware | Enfield | Borehamwood | Potters Bar | Watford | St Albans
Across London
Hampstead | St Johns Wood | Islington | Kensington & Chelsea | Fulham | Clapham | Richmond | Putney & Wandsworth | Crouch End | Stoke Newington | Highgate | Ealing | Notting Hill | Camden | Queens Park
Regional
What Our Customers Say
The architectural drawings were thorough and the planning application was approved first time. LCCL managed the entire process from design through to construction completion. Very professional throughout." — Alex Gray, Google Reviews, 4.7/5
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. They handled the design and build seamlessly." — KashImaging, Trustpilot, 4.7/5
From start to finish, everything was handled with precision and professionalism. The project was completed on time, on budget and to an excellent standard." — Ludovic, Reviews.io, 4.7/5
Frequently Asked Questions
What is a design and build service?
A design and build service means one company handles everything from initial consultation, architectural design, planning permission and building regulations through to construction, project management and finishing. LCCL Construction offers a complete design and build service so you have one point of contact and one company responsible for the entire project from start to finish.
Do I need an architect for a loft conversion or house extension?
Yes, you need architectural drawings for both loft conversions and house extensions. These are required for planning permission applications and building regulations approval. LCCL Construction provides in-house architectural design services as part of their design and build package, so you do not need to hire a separate architect.
What services does LCCL Construction offer to clients looking to undertake a loft conversion or home extension in London?
LCCL Construction offers complete design and build services for loft conversions, house extensions and renovations across London and Hertfordshire. Our services cover architectural design and planning, building regulations approval, measured building surveys, structural engineer calculations, party wall agreements, interior design, project management and all construction work from foundations to finishing. We manage every stage from initial consultation through to completion and building control sign-off.
How long does the design phase take to complete at LCCL Construction, and what does it involve?
The design phase at LCCL Construction typically takes 3 to 4 months. This covers architectural drawings, planning permission applications, building regulations submissions, structural calculations and party wall agreements. Once the design phase is complete, construction can begin. The total timeline from consultation to project completion depends on the scope of work.
Can I obtain the original DWG format architectural drawings for modifications to my project from LCCL Construction?
No, Lccl Construction retains ownership of all architectural drawings, which are protected under copyright law. The company only releases the drawings in PDF format to customers, and strictly for the purpose of use on the specific property for which the drawings were created. The original DWG format drawings are not available for release and remain the intellectual property of Lccl Construction.
I already have my architectural plans ready and only need construction services. Can LCCL Construction carry out just the construction phase of my project?
Yes, Lccl Construction specializes in providing tailored construction services even if you already have your architectural plans in place. We can focus exclusively on the construction phase of your project. Whether you are planning a loft conversion, a house extension, or any other building project, we have the expertise and experience to bring your plans to life. To proceed, please send your architectural plans and project details to info@lcclconstruction.co.uk.
How long does the architectural design phase take?
The architectural design phase typically takes 3 to 4 months from initial measured building survey to planning permission submission. This covers the survey, design development, planning drawings, design and access statement and the local authority submission process. Building regulation drawings are prepared in parallel or immediately after planning approval, typically adding a further 4 to 6 weeks. LCCL Construction manages the entire process on your behalf so you do not need to coordinate separate architects, engineers or surveyors.
Do you provide architectural services only, or do you also carry out the construction?
LCCL Construction offers both. We can provide a complete design and build service covering architecture, planning, building regulations, structural engineering and construction under one contract — this is the most efficient and cost-effective approach for most clients. Alternatively, if you already have your own architect or only need specific services such as planning drawings or structural calculations, we can provide those on a standalone basis. Call 020 8037 7332 to discuss your requirements.