top of page
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.
Search
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
4 days ago4 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
4 days ago4 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
5 days ago4 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
Permitted Development Rights for House Extensions in London: What You Can Build Without Planning Permission
Permitted development rights allow homeowners in London to build certain house extensions without applying for planning permission, saving time and money. However, the rules are specific and depend on the type of property, size of extension, and whether you are in a conservation area. At LCCL Construction, we advise on permitted development rights for every project and handle all planning applications when they are required.
LCCL Construction
Mar 132 min read
Do I Need Building Regulations for a Loft Conversion or House Extension?
Yes, building regulations approval is always required for both loft conversions and house extensions in London, regardless of whether you need planning permission. Building regulations ensure your project meets minimum legal standards for structural safety, fire safety, energy efficiency, ventilation, drainage and accessibility. At LCCL Construction, we handle all building regulations applications and inspections as part of our design and build service.
LCCL Construction
Mar 132 min read
How Much Does a House Extension Cost in London in 2026?
A house extension in London typically costs between £35,000 and £150,000 in 2026, depending on the type, size, specification and location. At LCCL Construction, we provide fixed-price quotes for all house extension projects, so you know exactly what your extension will cost before work begins.
LCCL Construction
Mar 133 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
Mar 123 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
Mar 122 min read
bottom of page