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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House Extensions
Loft Conversions
Planning & Building Regulations
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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