Here’s why summer is the best time to extend your home Property Extensions
Where do you need Extension Specialists?
You can find the best Extension Specialists on Bark. Start your search and get free quotes now!
First time looking for an Extension Specialist and not sure where to start? Tell us about your project and we’ll send you a list of Extension Specialists to review. There’s no pressure to hire, so you can compare profiles, read previous reviews and ask for more information before you make your decision.
Best of all - it’s completely free!
Are you planning a kitchen extension? Or perhaps you’re considering a bathroom or conservatory extension for your home? Tell us the details of your property extension and we’ll find the right specialist builders for your project.
Based on your requirements, Bark will reach out to relevant extension builders. We’ll match you with free quotes from the best extension specialists in your area. Receive a notification each time a new quote arrives, or check them in your own time.
Compare the cost of building your extension with each specialist and check their company reviews. You can also speak to each property extension professional either online or by phone, before booking any work with them.
East Midlands
East of England
North East England
North West England
Northern Ireland
Scotland
Aberdeen City
Aberdeenshire
Angus
Argyll and Bute
Clackmannanshire
Dumfries and Galloway
Dundee City
East Ayrshire
East Dunbartonshire
East Lothian
East Renfrewshire
Edinburgh
Falkirk
Fife
Glasgow City
Highland
Inverclyde
Midlothian
Moray
Na h-Eileanan Siar
North Ayrshire
North Lanarkshire
Orkney Islands
Perth and Kinross
Renfrewshire
Scottish Borders
Shetland Islands
South Ayrshire
South Lanarkshire
Stirling
West Dunbartonshire
West Lothian
South East England
South West England
Wales
Blaenau Gwent
Bridgend County
Caerphilly County
Cardiff
Carmarthenshire
Ceredigion
City and County of Swansea
Conwy County Borough
Denbighshire
Flintshire
Gwynedd
Isle of Anglesey
Merthyr Tydfil County Borough
Monmouthshire
Neath Port Talbot
Newport
Pembrokeshire
Powys
Rhondda Cynon Taf
Torfaen
Vale of Glamorgan
Wrexham
West Midlands
Yorkshire and the Humber
Whether you need a loft conversion, kitchen extension, garage conversion or single storey extension, Bark can help you find specialist extension builders across the UK. Just tell us about your project and location, and we'll connect you with experienced professionals so you can compare quotes, read reviews and choose the right fit.
Extension specialists can provide a range of services, such as:
Professionals typically handle all aspects including design, planning, construction and finishing.
You might consider hiring an extension specialist when:
House extensions offer a cost effective way to gain space without the expense and disruption of moving.
When comparing extension builders, check their portfolio for similar projects and confirm they hold appropriate insurance and certifications such as Federation of Master Builders membership. Ask about their experience with planning permission and building regulations. Check whether they provide design services or work with architects.
Bark lets you explore several local extension specialists so you can find someone who matches your project requirements and budget.
Bark's research shows that house extension costs vary significantly by project type and size. Single storey extensions typically range from £1,200 to £2,000 per square metre, whilst double storey extensions cost £1,500 to £2,500 per square metre.
Loft conversions usually range from £15,000 to £50,000 depending on complexity. Kitchen extensions typically cost £20,000 to £50,000+, whilst garage conversions range from £10,000 to £25,000 depending on requirements.
Many extensions can be built under Permitted Development rights without planning permission. For detached properties, you can typically extend by up to 8 metres for single storey or 3 metres for double storey to the rear.
Semi detached and terraced homes have smaller allowances. However, rules vary by property type and location, so always check with your local council or extension specialist before starting work.
Build times depend on extension size and complexity. Single storey extensions typically take 8 to 12 weeks from start to completion. Double storey extensions usually take 12 to 16 weeks.
Loft conversions can be completed in 6 to 8 weeks, whilst garage conversions often take 4 to 8 weeks. Planning permission, if required, can add 8 to 12 weeks to the timeline. Your extension specialist will provide a detailed project schedule during the quoting process.
Wondering when the best time is to extend your home? Here's why you should consider extending in summer
The cost of building an extension is determined by a number of factors, including size, specification, and your location. You may be planning a basement conversion, a single storey extension, a downstairs toilet extension, or an extension over your garage. Whatever you have in mind, our experts will take a detailed brief in order to provide an accurate quote for the work.
In many cases, you can extend your home under Permitted Development (PD). For example, under PD you can extend a detached property by 8m to the rear, if it’s a single-storey extension, or by 3m if it’s double. Check with your local council and your extension specialist before you get too far into the planning stages, because your project may not meet all the criteria for PD.
Most insurers won’t cover any loss or damage incurred while a property is undergoing alteration or renovation. If you’re carrying out extension works and managing the project yourself, it’s worth discussing your project with an insurance provider, before any work begins. You may need to arrange a specific extension policy to cover the new works and the existing structure. It’s also worth enquiring about a 10-year structural warranty, as this can be provided on some new extension works.
4.76/5.00
based on 326,693 reviews
Bathroom Renovation Indri is a kind and professional gentleman with a great team. I’m very happy with the whole experience and couldn’t find anything to complain about. He pays close attention to every detail and took his time to guide me through the design and choosing the bathroom fittings. He answered all my questions clearly and removed any doubts or uncertainties. He was also very patient, even when I changed my mind several times. The team worked neatly, kept everything tidy, and cleaned up at the end of each day. I would highly recommend them.
27 Apr 2026
I can wholeheartedly recommend this company! We hired them to convert our garage into a living space, and we are absolutely delighted with the final result. The work was carried out with incredible precision, paying great attention to detail and insulation, which was crucial for us. The owner, Chris, runs a very professional operation, and his team—Krzysztof and Marek—were punctual, skilled, and kept the workspace very clean. If you are looking for experts who truly know their craft, look no further. Great job! Thank you guys!
27 Apr 2026
It's been a pleasure working with Paul, originally on a loft conversion. We were really impressed, and we invited him back to do an extension. His team is highly skilled and professional. It's great to be able to get into the detail with Paul on the practical matters of the build and what the finished product will be, but also the equally important finances — not least because we made a few changes to our plan along the way, all of which were accommodated without fuss. Great team, and equally great end result. Very happy.
27 Apr 2026
