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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.

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Operated by myself and 2 family members for more than 40 years, customer satisfaction is important ,which is reflected in the satisfied customers we have provided our services to ,achieving five 5* ratings. We can assist with design /structural calcs.

Latest homeowner review

Reviewed by Val on 21/12/2020

John and his guys have been great. Always on time and focused on the job. Thanks!

All aspects of work are carried out to a high standard working alongside clients to insure all needs are catered for.

Latest homeowner review

Reviewed by Sarfraz on 12/9/2020

Very unreliable- Disappointed because they agreed on a price and time scale.Dropped tools and then never showed up. Called and agreed to come but again never showed up. Took all his tools away the following day without informing us leaving a lot of mess in the garden.

We are at highest quality builders. All aspect of building work. Please book appointment at our show home in a Caversham

Latest homeowner review

Reviewed by Isaac on 14/2/2021

I am new to property development and was struggling to find trades people that would complete the refurbishment of a 2 bedroom flat within a reasonable budget. Wojciech offered a fair and clear quotation to refurb the property. The work was completed to a very high standard and he updated me throughout with progress reports and any issues. He went the extra mile to ensure the job was done to my high standards and kept within the quoted price. A really personable chap and honest, a credit to his profession.

KCTLondon is a design-based Construction firm operating from Greater London, delivering quality services to clients’ satisfaction and within budget. Our products have remained high-end but our prices are competitive giving us the edge over many others.

Latest homeowner review

Reviewed by Sarah on 8/5/2017

I was very pleased with the work done. All the tradespeople were very helpful and pleasant We were very pleased with the works.

Rline Roofing are a small family company that specialise in all your roofing needs including slate and flat roofs to fascias, soffits, dry verge capping and guttering, we offer a wide range of roofing solutions that will help transform your home. - RR

Latest homeowner review

Reviewed by Steve on 29/11/2020

Bobby was very prompt in replying to the request. He was very thorough in looking at the issue, explaining what could be done (with photos) and giving us a price for the work. He carried out the work the next day to a good standard as promised. I would recommend using his services.

kuchnie ?azienki k?piel malowanie domu rozszerzenie kanalizacja elektryk zabudowy wn?k na zamówienie meble

Latest homeowner review

Reviewed by Bill on 23/10/2020

Kamil and his team knocked a new doorway in my utility room and did the floor screed. A very competitive price and a quality job too. These boys work really hard have really done a great job and I won’t hesitate to get them in for the next job

Working with our customers to create their ideas into reality!

Latest homeowner review

Reviewed by Steve on 14/2/2021

Good job Tom

The Manufacturer and Installer of Garden Sheds.Garden office buildings are growing in popularity with more and more people making the modern switch to work from home. Garden offices provide the perfect work-life balance solution whilst creating extra space at home. Our premium quality garden rooms are fully-insulated meaning you will have a warm, dry and comfortable space to work all-year-round. Not at all like a ‘shed office’ or ‘shoffice’, our buildings are built to the same quality, safety and insulation standards as a room in your house. This means you can create a professional and comfortable workspace in the practicality of your home garden.

Latest homeowner review

Reviewed by shaikhali on 17/12/2020

very good , All points clear before we have to start work

serious company, good knowledge about the jobs and materials, experience,high quality work, Fast and Clean after us ! don’t hesitate to contact us!

Latest homeowner review

Reviewed by Vinni on 7/3/2021

Reno is great, really helpful and professional

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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?

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  • Job done

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Recently completed jobs

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

Size of extension: 3 rooms...

Size of extension: 3 rooms Height of extension: 2 floors Room(s) to be in the extension: bathroom, bedroom(s) The proposal is a single storey to...

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Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: conservatory, dining room, lounge/living room, utility room...

Single storey front extension....

Single storey front extension. Approx 6 sq metres. Comprising new hallway and front door. Partition wall and internal door for new bathroom with...

Size of extension: 3 rooms...

Size of extension: 3 rooms Height of extension: 2 floors Room(s) to be in the extension: bedroom(s), kitchen I can provide estate agents details...

Extend a kitchen out to the...

Extend a kitchen out to the garden. The extension itself will be about 2.5M x 6.2M. Walls on both sides. And the opening towards the garden will be...

Size of extension: 1 room...

Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: dining room, kitchen, lounge/living room The proposed...

single ground level extension...

single ground level extension with utility and wet room

House extension merging...

House extension merging kitchen with front room. Probably 3 meter square or 3m by 5 meter to widen the kitchen. 3 skylight windows and moving the...

Calculating the cost of your...

Calculating the cost of your extension. 6m by 5m extention

Size of extension: 1 room...

Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: dining room, kitchen, lounge/living room The proposed...

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.

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