House extensions

House extensions built to add space properly

We deliver house extensions that increase usable living space while integrating seamlessly with your existing property. From structural works to final completion, we manage planning, construction, and compliance carefully to ensure safe delivery, minimal disruption, and a result built to last.

House Extensions Designed for Modern Living

Space can completely change how a home feels. The right extension can transform a small kitchen into a welcoming family hub or provide the extra bedroom a growing household truly needs. Before going through the stress and cost of moving, it is worth considering whether your current home could simply be improved to suit your lifestyle better.

At LJH Construction Ltd, we deliver professionally managed house extensions across the United Kingdom. Our approach combines practical building experience with careful planning, ensuring every project meets structural standards and UK building regulations.

Include & Exclude Services

Why House Extensions Continue to Grow in Popularity

Homeowners in the UK usually invest in house additions only for space. They focus on long-term value, lifestyle, and better use of current property. Many of our clients come to us after considering the expected costs of house extensions and assessing their options, including moving. 

Extending frequently turns out to be the more sensible choice when you account for stamp duty, estate agent expenses, and the extra work of moving. A well-designed addition can greatly raise the property’s resale value in addition to increasing the usable floor area. Careful design and proper structural integration are important.

Understanding House Extension Types

Choosing between house extension types depends on your property layout, budget and goals.

  • Rear Extension: Extends into the back garden, popular for creating open-plan kitchen/dining areas.
  • Side Return Extension: Uses the narrow alleyway at the side of older houses to widen rooms.
  • Wraparound Extension: Combines both side and rear extensions to maximize footprint around the corner of a house.
  • Double/Multi-Storey Extension: Adds space on two levels, usually a rear or side extension with a bedroom/bathroom added above.
  • Loft Conversion: Converts unused roof space into new rooms, often without changing the building’s footprint.
  • Basement/Cellar Conversion: Involves excavating under the house, popular in areas with high property values or limited space.
  • Garage Conversion: Transforms existing garage space into a habitable living space, such as a home office or gym.
  • Conservatory/Orangery: Typically glazed, cost-effective extensions that bring light into the home.
  • Porch Extension: Small, front-facing additions, often used for storage or security. 

The Realities of House Extension Cost

One of the most common questions concerns house extension cost. Pricing varies depending on size, structural complexity, materials and internal finishes. Online tools, such as a house extension cost calculator UK homeowners use, can provide general guidance. However, they cannot account for site-specific factors such as ground conditions, steel beam requirements, drainage adjustments or access limitations.

Planning Permission and Building Regulations

House extensions UK projects must comply with current building regulations. These cover structural integrity, insulation performance, fire safety and drainage standards. Some extensions fall under permitted development, while others require formal planning permission. Understanding these requirements early prevents delays later in the project. We coordinate closely with building control officers and ensure inspections are completed at each stage. This protects both safety and long-term property value.

Our Approach to Professional House Extensions

Experience matters in residential construction. A successful extension demands more than adding bricks to an existing structure. It requires careful structural assessment, clear project management and consistent site supervision. We begin with a thorough consultation to understand your objectives. Structural calculations and architectural drawings are arranged where required. 

Once construction begins, timelines are monitored closely, and communication remains clear. Related services such as loft conversions and property renovations can often be integrated within larger extension projects, ensuring a cohesive overall design. Throughout the process, we focus on minimising disruption and maintaining a safe, organised site.

Start Planning Your House Extension Today

For clear guidance and a comprehensive quote, get in touch with LJH Construction Ltd. if you’re considering adding on to your home in the UK. Contact us, and our staff will inspect your property, go over your alternatives and provide clear pricing so you may proceed with trust.

Get a Free Quote

Request a clear, no-obligation quote for your residential project. Our team will be in touch shortly.

Ideas to reality

Professional House Extensions Built to Last

House extensions require structured planning, quality workmanship and close project supervision. Every stage, from groundwork to final finish, is managed to ensure structural integrity, compliance and long-term durability. Detailed assessments are carried out before construction begins to identify structural requirements and potential challenges. Careful coordination of trades and materials helps maintain steady progress on site. This organised approach ensures the extension integrates seamlessly with your existing home and meets current UK building regulations.

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Loft conversion structural work with roof adjustments
Why Choose Us

Built on Experience, Delivered with Accountability

Successful house extensions rely on careful planning, structural expertise and consistent site management. From design consultation to final handover, every stage is supervised to ensure quality workmanship, regulatory compliance and reliable progress.

Over 10 years of experience

Strong expertise in house addition types, structural specs, and UK building laws is ensured by extensive practical experience in residential construction.

Professional & Experienced

You work directly with skilled professionals who understand the build process, communicate clearly and take full responsibility for on-site decisions.

Accurate & Reliable

Projects are carefully scheduled and monitored to manage timelines, reduce risk and minimise disruption throughout your house extension.

Ongoing Support

Support continues from planning approval through to final inspection, ensuring your extension is completed to the agreed standard.

Testimonials

What Our Clients Say?

Client Testmonal LJH Construction Ltd