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Find a local house extension specialist

If you've outgrown your home or lack the space to accommodate guests, consider a house extension rather than moving. Find out how you could rejuvenate your home with the help of a local specialist.

Browse House extension specialists

Take a look at our House extension specialists profiles, read reviews and request quotes directly.

Latest homeowner review

Reviewed by Ranju on 26/6/2018

Paulo and Sergio were fantastic, Paulo gave a good price for the work, which was laying flooring for whole flat (maisonette) 700 sq ft. sanding, preparing and painting whole stair- case and stairs. Really hard working guys, and Paulo kindly was ok driving around with me to source the flooring in his van. They completed the job really well, disposed of all rubbish. Thanks guys and wish you all the best!

We specialise in construction of residential Extensions and New Builds in Greater Manchester area.

Latest homeowner review

Reviewed by Susan on 31/10/2018

I am hiring this company for the second time and will use again. Recommend to everybody. Reasonably priced, high quality, guaranteed work. Will always come back to rectify any omissions on completion.

FSPM is a family run business, we are proud to offer a wide range of services to keep up with the maintenance of your properties and gardens.

Latest homeowner review

Reviewed by Claire on 7/10/2018

I posted my job and Darren replied shortly after. He was prompt in coming round to assess the job and then to complete the work. He was very knowledgeable and worked hard in tidying my garden ...I was delighted! I have now asked him to do some house painting for me in due course. Claire

Allen Building is an established construction company in Cardiff. We have been in business for 15 years. we have a solid portfolio and many references to our name. We are all so accredited Master builders by the F.M.B www.allenbuilders.co.u

Latest homeowner review

Reviewed by Robert on 11/6/2018

I used Allen Building for a double storey side/single storey back extension. Matthew and his team thoroughly deserve their 5 star rating. From the start of the job they were punctual, helpful with suggestions on undecided aspects of the work and very reasonable in cost. I did not have to chase them and our work was carried out without any issues whatsoever and in the time frame required. I will be using them again in the future and would absolutely recommend their services. A really good job all round!

Here at village joinery, we're primarily, joiners. However I believe as did my father. That a joiner should be skilled enough to both Make and Fit. So that's what we do. We cover all aspects of joinery. Specialising in conservatorys & lightweight roofs

Latest homeowner review

Reviewed by Shashikant on 25/10/2018

Nigel did a very good job on my extension build and was very knowledgeable on building works. The job took longer than expected as he had other contracts going on at the same time. Other than that I would recommend Nigel for their building works.

Belgravia Building Solutions offer 30 years of experience and are specialists in new builds, extensions, garage and loft conversions as well as internal alterations. We also offer landscaping and fencing services. We pride ourselves on customer service.

Latest homeowner review

Reviewed by Stewart on 31/10/2018

Full extensions to the rear of the building 10 metres by 4 metres pitched roof rendered to outside and fully finished inside main job 1 New patio 2 New block paved drive 3 New wall to driveway 4 Lawn artificial grass also laid in rear garden We are so pleased with Jeff and the great job he did for us, we have no complaints, nothing was to much trouble. We added the 4 extra jobs to the contract due to his work quality and the confidence in his work we had Thanks for introducing him to us

My experience is 20 years , House Extensions , Plastering , Painting, I can buy materials from the Builder depot and supply them to your house . I have Gasman-Plumber and Electrician with certificates.

Latest homeowner review

Reviewed by sidrah on 4/8/2018

He was excellent, really fair honest and reliable. I would definitely call on him for other jobs.

Djc Contractors has been in business for 14 years, we have carried out many, extension, loft conversions, new build and total refurbishments in the London,Hertfordshire and Essex areas. We have many previous clients that we would be more than happy to show off are work. All work carried out by us comes will insured backed guarantees.

Latest homeowner review

Reviewed by Charlie on 28/11/2018

The work was done to a good standard and whilst over-ran from a time perspective was understandable. The team work hard, for long hours and are punctual. They are aware they are working on someone's home not just enough job. David goes above and beyond to make sure his customers are happy and unlike other builders is focused on the finish not just the structure. They are tidy. The result for us is an excellent side and rear extension and loft conversion in 5 months. We would recommend and use David again.

Latest homeowner review

Reviewed by Jagdeep on 8/10/2018

Outstanding work from GTB who were willing to take on my project midway (after our previous builders left) at a fair price. They rescued the build and finished to a high standard working quickly and with consideration. Highly recommended.

We are well established business with highly qualified tradesmen that are at your service at a short notice. We provide quality installations, service and emergency cover of all plumbing and heating applications. We carry out all building works in higher standards. We can help you with planning permission you need to apply for Thank you

Latest homeowner review

Reviewed by guri on 14/12/2018

He is Very honest and professional. He gave me right advice and i am so happy with his work. I will recommend him to all my family and friends. Thank you

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What type of tradesperson do you need?

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House extension specialists - what you need to know

House and kitchen extensions can transform your property, and add significant value in the process. While they are demanding projects, with the right set of skills and expert knowledge, a specialist can make sure your extension runs smoothly and stays within budget.

But experience and attention to detail are crucial. Just think for a moment about the individual stages and trades involved in a house or kitchen extension. Planning and design, groundwork, brickwork, carpentry and joinery, electrical work, plumbing, plastering, decorating, potentially even roofing and glazing too.

Taking on a house or kitchen extension needs a specialist with a solid track record of transforming their customers’ homes to a high standard, as well as someone who can advise you along the way. An extension can be as much an emotional investment as a financial one, so you need a builder you have confidence in.

Look for a tradesperson or builder who is able to confidently and clearly communicate how they’d approach your project, rather than someone who’ll just “turn their hand” to the varied and unique trades involved.

A reliable and reputable extension specialist will give you a thorough plan for the project: how they’d assist you with the design and layout, the key phases and trades involved, a realistic completion date, and an accurate quote (which they’ll stick to).

Overall, it’s important to consider the scale of the project. Remember, you’re looking for a project partner rather than just a tradesperson.

Cost of house and kitchen extension work

Cost per m2

  • Low: £1,200 per m2
  • Average: £1,500 per m2
  • High: £1,750+ per m2

How long does a kitchen extension take?

Ultimately, this depends on the scale of the project in question and the specification or finish you expect your extension to meet.

A basic single-storey kitchen extension could be turned around in 10 weeks, whereas a more-involved project could take 14 weeks or longer.

How long does a house extension take?

House extensions are usually larger projects – indeed, they could even feature a kitchen as part of the extension.

A two-storey extension consisting of a kitchen or WC on the ground floor and a bedroom on the first floor is likely to take at least 12 weeks to complete, while a larger-scale project with more rooms, floors or intricate features could take 18 weeks or more.

The qualifications your extension specialist needs

Given the breadth of trades that may be required to complete an extension, there can be a number of qualifications and accreditations involved.

The Federation of Master Builders (FMB) is an established and reputable association, but not every builder will be a member. Some trades will be able to produce their City & Guilds or NVQ qualifications, but as these aren’t formally required, plenty of perfectly competent professionals might not necessarily hold these.

However, there are some qualifications that are mandatory for certain types of work. Gas and heating engineers must be Gas Safe registered, while electricians should be signed up to NICEIC in order to commission your electrical work. You may also want to check that your builder adheres to Health and Safety Executive (HSE) best practices when it comes to risk assessment and safe working.

Planning permission for extension projects

Planning permission requirements will vary according to the location of your property and the surrounding buildings. There’s always the potential for grumpy neighbours to throw a metaphorical spanner in the works too.

Official guidelines are fairly easy to understand, but can include puzzling intricacies. No additional planning permission is required as long as the extension doesn’t exceed more than half the area of land around the "original house". You also won’t need to seek additional permission if your extension is no higher than your existing roof.

However, there are some restrictions it’s worth being aware of. You can find the full list on the planning portal website. Single-storey rear extensions, two-storey extensions and those conducted on properties facing a public highway will need to adhere to certain limitations.

Insurance for extension projects

Public liability insurance is critical, covering you for damage to your property caused by a builder. However, you’ll want to confer with your home or buildings insurance provider and let them know about the work to ensure you’re covered, too.

Home renovation and extension insurance is available from some providers, which may be worth investigating if your existing insurer can’t cover your work. Some builders may provide a warranty on their work too.

Questions you should ask your extension specialist

  • Will they provide a copy of their public liability insurance?
  • Can they provide a warranty for their work?
  • Do they have examples of their previous renovation projects?
  • Can they give you multiple references of recent extensions they’ve completed?
  • Are they willing to assist with the planning and design phase?

How our service works

  • Create a job - it's free

    We'll connect you with the right tradesperson, from over 30 different trades.

  • Get quotes

    Up to 3 tradespeople can provide a quote, but on average you'll get 1-2.

  • Check ratings

    Look at each tradesperson's profile page to see their ratings and reviews.

  • Pick a tradesperson

    Use our homeowner checklist for extra tips on choosing a tradesperson.

  • Job done

    Leave a rating for your tradesperson based on quality, reliability and value.


Recently completed jobs

Here's what's been happening in and around your area

Size of extension: 2 rooms...

Size of extension: 2 rooms Height of extension: 1 floor Room(s) to be in the extension: dining room 4M x 5.8M bRICK PITCHED ROOF WITH...

Size of extension: 3 rooms...

Size of extension: 3 rooms Height of extension: 1 floor Room(s) to be in the extension: kitchen, lounge/living room, utility room ground floor...

Size of extension: 1 room...

Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: dining room Dimensions approx. 11 Ft x 12 Ft. 2 Brick...

Size of extension: 1 room...

Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: kitchen Adding new kitchen to rear of property an...

Size of extension: 1 room...

Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: kitchen We have plans available with an approved...

Size of extension: 2 rooms...

Size of extension: 2 rooms Height of extension: 2 floors Room(s) to be in the extension: bedroom(s), Playroom Approx measurements 15 ft by 16...

Size of extension: 2 rooms...

Size of extension: 2 rooms Height of extension: 1 floor Room(s) to be in the extension: kitchen plans available for inspection...

Size of extension: 5 rooms...

Size of extension: 5 rooms Height of extension: 2 floors Room(s) to be in the extension: bathroom, bedroom(s), kitchen, toilet, utility room...

Size of extension: 2 rooms...

Size of extension: 2 rooms Height of extension: 1 floor Room(s) to be in the extension: dining room, kitchen An extension that will run across...

Size of extension: 2 rooms...

Size of extension: 2 rooms Height of extension: 1 floor Room(s) to be in the extension: bedroom(s), kitchen The extension is on the back of a...

How our service works

  1. Create a job - it's free

    We'll connect you with the right tradesmen, from over 30 different trades.

  2. Get quotes

    Up to 3 tradesmen can provide a quote, but on average you'll get 1-2.

  3. Check ratings

    Look at each tradesperson's profile to see their ratings and reviews.

  4. Pick a tradesperson

    Use our homeowner checklist for extra tips on choosing a tradesperson.

  5. Job done

    Leave a rating for your tradesperson based on quality, reliablity and value.