top of page
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
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
Kitchen Extensions in London: Create Your Dream Open-Plan Kitchen
A kitchen extension is the most popular reason London homeowners choose to extend their property. Whether you dream of a large island kitchen, an open-plan kitchen-diner for family meals, or a kitchen-living space that opens onto the garden, a well-designed kitchen extension can transform the way you live. LCCL Construction has delivered hundreds of kitchen extensions across London and Hertfordshire, creating beautiful, functional spaces that add real value to homes.
LCCL Construction
Mar 113 min read
Double Storey Extensions in London: Add Space on Two Floors
A double storey extension adds space on both the ground floor and first floor of your property, making it the most cost-effective way to add significant living space to your London home.
LCCL Construction
Mar 113 min read
Wraparound House Extensions in London: Maximise Your Ground Floor Space
A wraparound extension in London combines a rear extension with a side return extension to create an L-shaped addition that wraps around the back and side of your property.
LCCL Construction
Mar 113 min read
Side Return Extensions in London: How to Transform Your Terraced House
A side return extension is one of the smartest ways to add space to a London terraced or semi-detached house. By building into the narrow alleyway that runs along the side of many London properties, you can add significant width to your kitchen or living area without losing garden space.
LCCL Construction
Mar 113 min read
Rear House Extensions in London: Costs, Planning and What to Expect in 2026
Rear House Extensions in London: Costs, Planning and What to Expect in 2026
LCCL Construction
Mar 103 min read
How Long Does a House Extension Take to Build in London?
A house extension in London typically takes between 10 and 24 weeks to build, depending on the size and complexity of the project. A single-storey rear extension usually takes 10 to 16 weeks, a side return extension takes 8 to 14 weeks, and a double-storey extension takes 14 to 24 weeks. The full project timeline including design and planning stages is usually 6 to 12 months from start to finish.
LCCL Construction
Feb 192 min read
Loft Conversion vs House Extension: Which Adds More Value to Your London Home?
A loft conversion typically offers a better return on investment than a house extension for most London homes. While both options add valuable living space, a loft conversion generally costs less, causes less disruption, and can add between 15% and 25% to your property value — often making it the smarter financial choice.
LCCL Construction
Feb 193 min read
bottom of page