House Extension in the UK
A UK extension is either permitted development or a planning application, and the difference is size, height and position relative to boundaries — single-storey rear extensions have generous allowances under prior approval, but conservation areas, listed buildings and flats do not get them.
Enter your Postcode to find nearby availability
We use your Postcode to match you with available house extension providers nearest to you. Because both you and the provider have Postcodes, results are ranked by true local distance.
New customers get £10 credit to discount hourly services · T&Cs apply
About house extension services
Building Regulations apply either way. The Party Wall Act 1996 requires notice to neighbours for excavation near their foundations or work on a shared wall, and serving it late is the commonest cause of delay.
How much do house extension services cost?
Indicative guide, per job — not a quote. Enter your Postcode for real prices from local pros.
Low
£18000
Typical
£32000
High
£55000
What affects the price: The cost of a house extension is influenced by factors such as the size and complexity of the design, materials chosen, and the condition of the existing structure. Additional costs may arise from the need for planning permissions or site-specific challenges.
What you get on Locufy
- Free, no-obligation quotes from local house extension providers
- Local professionals matched by real distance
- Flexible scheduling — including evenings and weekends where offered
- Transparent pricing and clear communication before you commit
What to provide
- Access to the property for site visits and measurements.
- Any existing architectural plans or documents related to the property.
- Clear communication about your vision and budget.
- Flexibility with scheduling to accommodate construction timelines.
Common house extension jobs
Some of the house extension jobs local pros on Locufy take on.
Single-Storey Extension
This involves adding a new room at ground level, often to create a larger living area or kitchen.
Double-Storey Extension
A two-level extension that provides additional rooms on both the ground and first floors, ideal for larger families.
Loft Conversion
Transforming unused attic space into functional rooms, such as bedrooms or offices, maximising vertical space.
Garage Conversion
Converting an existing garage into a livable space, such as a home gym or office, enhancing utility.
Orangery
A light-filled extension that combines elements of a conservatory and traditional building, often used as a living area.
Wrap-Around Extension
A comprehensive extension that wraps around the side and back of a home, creating a substantial new living area.
What's involved in house extension
- 1Initial consultation to discuss ideas and requirements.
- 2Site survey and assessment of existing structures.
- 3Preparation and submission of planning applications.
- 4Construction phase, including groundwork, framing, and finishing.
- 5Final inspection to ensure compliance with building regulations.
Good to know
- Ensure the contractor has relevant qualifications and experience in house extensions.
- Check local building regulations and required permits before starting the project.
- Consider the materials used for energy efficiency and aesthetics.
- Plan for potential disruptions during construction, including noise and access issues.
- Understand the timeline, as extensions can take several weeks to months depending on size and complexity.
What house extension includes
Design and Planning
House extensions typically start with design and planning, which may involve an architect or designer to create detailed blueprints. For example, a single-storey extension might require planning permission, while a conservatory could fall under permitted development.
Construction Work
The main construction phase includes laying foundations, building walls, and roofing. For instance, adding a new bedroom may require structural work to ensure it integrates seamlessly with the existing home layout.
Utilities Installation
Extensions often necessitate the installation or upgrading of utilities such as plumbing, electrical systems, and heating. A kitchen extension may require new gas lines or electrical circuits to accommodate additional appliances.
Finishing Touches
Finishing work includes plastering, painting, and flooring. After the main structure is complete, homeowners often choose to install bespoke cabinetry or high-quality flooring to enhance the new space.
How to book house extension on Locufy
Enter your Postcode
Tell us where you need house extension — your Postcode pinpoints providers who genuinely cover your area.
Compare local pros
See available house extension providers near you with ratings, reviews and clear pricing — no endless phone calls.
Book with confidence
Choose your provider and arrange the job. Badges and real reviews mean no nasty surprises.
Why book house extension on Locufy
Verified local pros
Providers can earn verification badges so you can book with confidence.
Truly local results
Matched by real distance using your Postcode — not a rough area guess.
Real reviews
Genuine ratings from customers who actually used the service.
House Extension — frequently asked questions
What factors affect the cost of a house extension?
The cost of a house extension can vary significantly based on size, complexity, materials used, and location. For example, a more complex design or high-end materials will increase overall costs.
How long does a house extension typically take to complete?
The duration of a house extension project can range from a few weeks to several months, depending on the size and complexity. A simple single-storey extension might take around 6-8 weeks, while larger projects could take longer.
Do I need a qualified specialist for my extension?
While general contractors can manage most aspects of a house extension, specific tasks like electrical, gas, or structural work require qualified specialists. It’s crucial to ensure that all work complies with local regulations.
Can I book multiple related jobs at once?
Yes, many homeowners choose to combine related jobs, such as a house extension and renovation of existing rooms. This can often lead to cost savings and a more streamlined project timeline.
Is emergency or same-day availability possible for house extensions?
Emergency work for house extensions is generally limited and depends on the nature of the issue. Most projects require careful planning and scheduling, so same-day availability is uncommon.
What is typically out of scope for a house extension project?
Out of scope work may include landscaping, interior decorating, or any structural changes not covered in the original design. Homeowners should clarify with contractors what is included in the initial agreement.
How do I find house extension near me?
Enter your Postcode above. Locufy matches you with house extension providers who cover your exact area, ranked by true local distance rather than a rough town or county guess.
Is it free to get house extension quotes on Locufy?
Yes — searching and requesting quotes from local house extension providers carries no subscription fees for customers. You only pay for the work you agree to.
How much does house extension cost?
See our researched house extension price guide — typical costs, what affects the price, and how to save.