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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.

MODERN LIVING SPACE CONSERVATORIES ALL STYLES AND DESIGNS OVER 30 YEARS EXPERIENCE FREE NO OBLIGATION QUOTATION LOCAL COMPANY FAMILY RUN FREE COMPUTER CAD DRAWING BEAT ANY LIKE FOR LIKE QUOTE

Latest homeowner review

Reviewed by Rachelle on 17/4/2019

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Plumlec is a construction,plumbing,heating and electrical business,we construct and install the complete job from ground up including heating ,kitchens,bathrooms,flooring,renovations,extensions there is nothing we can not do or achieve ,friendly,reliable

Latest homeowner review

Reviewed by Graham on 21/11/2018

So impressed with the service and quality of work, Richard is coming back to do more work. 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 Harsh on 20/1/2019

Everything excellent. Very well done.

We offer quality, seriously and very flexible. We respect your decision. And we will try to finis the jobs on sort time it's possible. Contact us and we will fixing your problem. . . Thanks Julian

Latest homeowner review

Reviewed by Daniel on 7/5/2019

From the moment Julian and his team arrived we knew we'd made the right decision. They worked extremely hard to build exactly what was required. Their workmanship and professionalism throughout was first class. The job came in on budget and on time. They answered all my questions and communication throughout was excellent. We love the enhancements they have made to our home. I wouldn't hesitate to use them again if we were considering any future work and have already recommended them to others.

Here at Base to Apex, we pride ourselves on ensuring our clients are happy from start to finish. We carry out all aspects of works from porches, extensions and conservatories to hand made bespoke windows, doors and stairs. We also have our very own solid lightweight roof design which is like no other.

Latest homeowner review

Reviewed by Mr on 23/4/2019

Very Happy with the work carried out. Would recommend & ask for quote in the future for work that is planned in.

R.A.S Construction And Landscaping ltd is a well established company specialised in all aspects of building and construction work. All our work is carried out by our own employed teams and we offer free advice and quotations. All work guaranteed.

Latest homeowner review

Reviewed by Chloe on 24/6/2019

100% recommend this building team. Absolutely incredible and finished on time and budget. Shall use them again in the future and have been recommending to my friends. Andrew is brilliant - he was on site everyday. These guys are really exceptional builders and feel totally confident recommending them again.

Bayhaven is a family building team of three. We specialise in house builds, barn conversions, extensions and renovations. We don't use subcontractors and maintain 100% attendance until job completion. We pride ourselves on the quality of our work.

Latest homeowner review

Reviewed by Colin on 20/6/2019

Kevin, Dave & Mick did a fantastic job and we are delighted with our new extension. From start to finish they were extremely reliable and nothing was too much trouble. Their work was first class and we wouldn’t hesitate to recommend them. We can honestly say we can’t fault them at all.

OUR COMPANY IS SPECIALISED IN ALL KIND OF HOME AND COMMERCIAL RENOVATIONS; LOFT CONVERSIONS; EXTENSIONS; PAVEMENT & PATIO INSTALLATIONS; FENCES INSTALLATIONS; PLUMBING & ELECTRICAL SERVICES; KITCHEN & BATHROOM INSTALLATIONS.

Latest homeowner review

Reviewed by Ejaz on 30/5/2019

Reliable and reasonable price. Excellent communication throughout. Would recommend and will use again.

WELCOME TO SAKINA BUILDING: PROVIDING A COMPREHENSIVE BUILDING & PROPERTY MAINTENANCE SERVICES

Latest homeowner review

Reviewed by IBBY on 14/8/2018

I definitely recommend Sakina Builders if you're looking for Speed, Quality results and Cooperation. Sakina was on hand to discuss potential ideas to improve my building extension work and accommodate my budget to produce excellent Results. True professionals, amiable, reliable & trustworthy, Sakina Builders took away the headache of working with builders. Their tradesmen are experts and versatile, hence, look no further if you seek GREAT building results with perfect finish. I definitely recommend SAKINA.

Wide variety of projects undertaken and delivered on time every time.

Latest homeowner review

Reviewed by Tim on 17/5/2018

Empire started working on our project the very same week that the contract was agreed and very quickly with a large team got a large amount of work done. Sourabh, Jas and team are very hard working, eager to please and meet requirements and took a non nonsense approach to our building project. We are very happy with the results, we now have an amazing space we can enjoy. We would use Empire again on another build without hesitation. Many thanks!

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What type of tradesperson do you need?

What type of job is it?

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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  • Get quotes

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    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.


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Size of extension: 3 rooms Height of extension: 2 floors Room(s) to be in the extension: bedroom(s), lounge/living room Just quote at the moment ...

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Room(s) to be in the conversion: 1 x dining room, 1 x toilet Garage conversion, plus a small extension at the back of the house - 2 levels Planning...

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Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: Dog grooming parlour I'm not sure on what I can do, so need...

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Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: bathroom Would like it to be as small as possible for a...

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Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: dining room We would like to receive quotes for a single...

Size of extension: 4 rooms...

Size of extension: 4 rooms Height of extension: 1 floor Room(s) to be in the extension: bathroom, bedroom(s), kitchen, utility room Rear wrap...

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Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: dining room Build to consist of ground works, and build for...

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Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: dining room Single story rear extension. To bring dining...

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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