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LABC Award Winners 2024 | 200+ Reviews 4.7/5 | 20+ Years Experience | NFB Membership | London
LCCL Construction Blog
Guides, News and Project Case Studies from LCCL Construction
Welcome to the LCCL Construction blog. Here you will find expert guides on loft conversions, house extensions, home renovations, architectural design, planning permission and building regulations. We also share project case studies from our completed builds across London and Hertfordshire, giving you real examples of the work we deliver. LCCL Construction is an award-winning design and build company with over 20 years of experience, more than 200 verified reviews rated 4.7 out of 5, and LABC Awards Regional Winners 2024. If you have a question about your project, call 020 8037 7332 or book a free consultation.
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Extension Builders London: 6 Things to Check Before You Appoint
Looking for extension builders in London? Here are 6 things every homeowner should check before appointing house extension builders in London in 2026 — from reviews and accreditations to quotes and warranties.
LCCL Construction
2 days ago3 min read
Loft Conversion or House Extension: Which Should I Do First?
Many London homeowners want both a loft conversion and a house extension but are unsure which to tackle first, or whether to do both at the same time. The answer depends on your priorities, budget, property type and how you plan to use the space. LCCL Construction regularly delivers combined loft conversion and extension projects and can advise on the best approach for your situation.
LCCL Construction
3 days ago2 min read
How to Finance a Loft Conversion or House Extension in London
A loft conversion or house extension is a significant investment, typically costing £30,000 to £150,000 in London. Understanding your financing options and choosing the right payment approach is essential for a stress-free project. This guide covers the main ways to fund your construction project, plus how LCCL Construction structures payments to make the process manageable.
LCCL Construction
3 days ago3 min read
House Extensions South London 2026: Costs, Planning and What to Expect
Looking for house extensions in South London? This complete guide covers costs, planning permission, the best extension types and what to expect from a design and build company in South London in 2026.
LCCL Construction
5 days ago4 min read
7 Things to Look for in a House Extension Builder in London (2026 Guide)
Choosing the right house extension builder in London is one of the most important decisions you will make. This guide covers the 7 key things every homeowner should check before appointing a builder for a house extension in London in 2026.
LCCL Construction
5 days ago4 min read
House Extension Design Ideas: Open Plan Kitchen Diner London 2026
An open plan kitchen diner extension is the most popular house extension in London. This guide covers the best design ideas, layouts, features and finishes for creating a beautiful open plan kitchen diner extension in 2026.
LCCL Construction
Apr 164 min read
How Long Does a House Extension Take in London? (2026 Guide)
A house extension in London typically takes 10 to 18 weeks to build, depending on the type and size. But the full timeline from first consultation to completion is usually 4 to 8 months. This complete guide covers every stage and how long each one takes.
LCCL Construction
Apr 164 min read
Do I Need Planning Permission for a Rear Extension in London?
Many rear extensions in London can be built without planning permission under permitted development rights. This complete guide explains when you do and don't need planning permission for a rear extension in London, the rules that apply and what to do if your project falls outside permitted development.
LCCL Construction
Apr 154 min read
Double Storey Extension Cost London 2026: Prices, Planning and What to Expect
A double storey extension in London typically costs between £70,000 and £150,000 in 2026, depending on size and specification. This complete guide covers double storey extension costs, planning permission, timelines and what to expect.
LCCL Construction
Apr 84 min read
Kitchen Extension Cost London 2026: Prices, Planning and Design Ideas
A kitchen extension in London typically costs between £30,000 and £80,000 in 2026, depending on size and specification. This complete guide covers kitchen extension costs, planning permission, design ideas and what to expect from the build.
LCCL Construction
Apr 84 min read
Victorian Terraced House Extension London 2026: Costs, Planning and Design Ideas
A Victorian terraced house extension in London typically costs between £35,000 and £120,000 in 2026 depending on type and specification. This complete guide covers everything you need to know about extending a Victorian terraced house in London — costs, planning, design ideas and what to expect.
LCCL Construction
Apr 84 min read
Wraparound Extension Cost London 2026: Prices, Planning and What to Expect
A wraparound extension in London typically costs between £55,000 and £120,000 in 2026, depending on size, specification and location. This complete guide covers wraparound extension costs, planning permission, timelines and how to get the best value from your project.
LCCL Construction
Apr 75 min read
Side Return Extension Cost London 2026: Prices, Planning and What to Expect
A side return extension in London typically costs between £35,000 and £75,000 in 2026, depending on size, specification and location. This complete guide covers everything you need to know about side return extension costs, planning permission, timelines and how to get the best value from your project.
LCCL Construction
Apr 75 min read
How to Plan a House Extension in London on a Budget
A house extension in London is a significant investment, but there are smart ways to manage costs without compromising on quality. This guide explains how to plan and budget for a house extension in London, with practical tips to get the most value from your spend.
LCCL Construction
Mar 162 min read
How Much Value Does a Loft Conversion or House Extension Add to a London Property?
Adding space to your London home through a loft conversion or house extension is one of the best investments you can make. Both options typically add more value than they cost, making them a financially sound alternative to moving house. This guide breaks down the return on investment for each type of project based on current London property values in 2026.
LCCL Construction
Mar 132 min read
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