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Find Local Extension Builders Near Me

Get everything you need to know about finding a house extension builder. Get a quote for single or double floor, rear, side and return extensions. Below, we cover tips to help you find a local extension builder:

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How to find a reliable, local extension builder

A house extension can transform your property, adding a lot of living space and value to your home. Whether you need a new bathroom or want to expand your kitchen, a home extension may well be the home improvement solution for you.

To make sure that building work goes as smoothly as possible, we recommend you hire a local building service with enough expertise to carry out a high quality job.

What can a house extension builder help you with?

A house extension is a great solution for homeowners who need more space, but don’t want to move. They add a lot of value to your property, helping you make the most of your spaces by allowing you to reorganise the layout of your home.

A house extension specialist can help with:

  • Single storey extensions
  • Double storey extensions
  • Side extensions
  • Rear extensions
  • Wrap-around extensions
  • Garden rooms
  • Basement extensions

Other space-adding improvements include installing a conservatory, a garage conversion or a loft conversion.

Rear and single storey extensions tend to be smaller and less expensive to install, whilst wrap-around and double-extensions offer more space but cost more to build. Not sure what type of extension would be best for your home? Read our 2023 extension cost guide for more details about the different extension types, or speak to a skilled extension builder today to get some advice and a free quote.

Find an extension builder

Picture of a brickwork side extension with large windows and skylight

Factors to consider when choosing an extension builder

It’s really important that you choose a reliable extension builder company to carry out work on your home. Failing to do this can result in stress and expensive repairs. 

Before you hire, you should do your research to ensure that your builders:

  1. Are an experienced company with a strong history of successful projects
  2. Have all the necessary licenses and insurance needed to protect you and their workers
  3. Have a good range of positive reviews from previous customers vouching for their reliability
  4. Are available to carry out the work in the timeframe you need it by
  5. Are quoting a price and payment option that you are happy with, having compared the quote with other local extension companies

A local extension contractor is more likely to respond quickly, as they’ll be right around the corner and ready to help.

Post a job today to find a reliable, local extension builder.

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How much does it cost to hire an extension builder?

Illustration of a man with a beard surrounded by different extension types, each labelled with costs to install

How much you’ll end up spending on your house extension project depends on a range of factors, including the type of home extension and its size, and where you live in the UK.

On average, you could spend anywhere between £45,000 and £160,000 on a house extension. Buying a prefab is a cheaper solution, ranging from around £45,000 – £55,000, whilst wrap-around and basement extensions are on the upper bracket range, costing upwards of £60,000.

Read our 2023 extension cost guide for the full list of costs, as well as more information about the different extension types available, and money saving tips. Or, for a more accurate quote for your specific project, speak to an extension building service today.

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What planning permission do you need for an extension?

Whether or not your extension project will require planning permission depends on whether it falls under permitted development (PD) rights. If you want to go beyond these rights, such as by building an extension that’s bigger than 50% of the total land area around the original house, you’ll have to apply for permission before building works can begin.

Most planning permission applications take between 8 and 12 weeks, so make sure you factor this into your project timeline.

For more information, read our planning permission guide or visit the Planning Portal website.

Picture of a modern second storey house extension with large window that has a black frame

Questions to ask a local extension builder before you hire

Whether you want a kitchen extension or a new bedroom with an ensuite, we recommend you ask the following questions before you hire a building service:

Do you have public liability insurance and what does this cover?

While it’s not a requirement for them to have it, it’s a good idea for your extension builders to have public liability insurance to cover you and them against any accidental damage done to your home or personal injuries. Make sure to always ask your builder what insurance they have before you hire them. This will guarantee protection for both parties and ensure your builder is legally compliant.

How many years of experience do you have?

Knowing how many years of experience your extension builder has will allow you to pick a tradesperson who you are confident has enough experience to carry out a high quality job. When you’re finding a builder through Rated People, head over to their profile to check out the pictures on their work gallery and their ratings and reviews.

Do you use subcontractors? If so, are they licensed and insured?

If your extension builder is planning on using subcontractors, then it’s a good idea to confirm the qualifications and insurance coverage of everyone who will be working on the project. Your builders will almost definitely be using a team of specialists, including plumbers, heating engineers and electricians. Anyone working with gas needs to be registered with Gas Safe, and anyone installing electrics (in England and Wales) needs to be Part P certified to be able to self-certify their work. These tradespeople will have valid documentation that you can ask to check.

What is your estimated timeline for completing the project?

Knowing what the estimated timeline is for completing the project  will help you set realistic expectations about how long your extension will take to complete.

How much will the job cost?

Asking how much the job will cost will help you budget for your project and will ensure price transparency before you hire. How much you’ll end up spending depends on the scope of your project, and where you live in the UK, so make sure you add plenty of details when you post a job.

Picture of a side extension with a tiled, slanted roof and plants around the side

Tips for working with a local extension builder

  1. Be crystal clear about what you want and how much you’re willing to spend. Clear communication is key to ensuring you and your extension builder are on the same page about your project’s requirements and your budget constraints
  2. Stay in the loop and ask for updates as the project unfolds. This will allow you to address any potential issues before they escalate
  3. Make sure you document agreements or changes to the original plan. Keeping a written record of all modifications to your project, including timelines and costs, will serve as a valuable reference point to prevent misunderstandings and ensure work is carried out to a high standard
  4. If you have any concerns, talk to your extension contractor straight away. Open discussion is more likely to lead to a swift resolution, and will help you maintain a positive working relationship with your builders

Find an extension builder

We have over 15 years experience in renovations, electrical works, extensions, kitchen and bathroom fitting and much more. We pride ourselves on being fully committed to offering an attentive service which is tailored to you specific requirements.

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Reviewed by Victoria on 4/4/2023

Very pleased that Chris and his excellent team finished the extension on time. There were a few issues during the build but they were quite minor and quickly resolved. We were very fortunate with weather at the start which helped.

Web -: alfahomeextensions.com Alfa home extensions limited is a registered home improvement company offering huge range of services from extension to loft conversion with highest standards. We take great pride in our reputation for superior client satisfaction. We strive to satisfy owners and consistently deliver projects on time, within budget and to a high standard of quality. Our business has always been renowned for excellence in craftsmanship and we continue that focus today. Our services include design and build extensions, loft conversions, kitchens and bathrooms, and all aspects of building work. All our work is insured and Guaranteed. We provide one year maintenance and 5 YEARS structure Guarantee to all our clients. We are so proud that the majority of our work comes through referrals, which is a testament to our company and our commitment to offer the best workmanship. Why choose us? . We provide architecture drawings, plannings and structure calculation services · Free Quotation · Local reference available · Fixed price, No Hidden Charges · Professional Service, Speedy Build, Highest Standards · Single Point Contact from start to finish · Full Building Control Approval guaranteed Contact us for a free, no obligation quote.

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Reviewed by NIALL on 15/1/2024

The team at Alfa, led by Raj and Harpal on site, did an incredible job on our house renovation and remodelling. They quoted very fairly and any additions were priced at the same rate. They work was completed to a very high standards. The project timelines were well adhered to with regular updates and payment structure throughout the construction program. Any challenges were overcome with clever thinking and thoughtful consideration The quality of the finish is superb and we are delighted. Thanks Raj

We are a family run home improvement company. We offer competitive prices due to low overheads, but big business customer service. All our fitting teams have at least one artisan with considerable experience in their field. 1 million public liability insurance can be shown.

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Reviewed by Keemet on 27/3/2024

Hi, my name’s Darren the owner of Complete Kitchens. I’ve been in this trade for 35 years, it’s a real family business with 3 generations of Kitchen Fitters. Whilst Kitchens are in my blood, I also specialise in Bathroom fitting. I’ve worked for all the big companies over the years (Homebase, B&Q, Ikea, Habitat, Wickes) and understand how daunting it can be choosing the right kitchen or bathroom fitter. I have the knowledge and experience that means you can put your mind at rest. I can either offer a fit only service right the way through to design and supply too. As part of your overall kitchen and bathroom project I can do tiling, plastering, electrics, gas, plumbing and decorating. If walls need to come down, not a problem as I can cover all building aspects too. I am very approachable and have a strong focus on customer service, I look forward to working with you.

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Reviewed by sandra on 28/3/2024

Very happy with result.

We are a local company with over 20 years experience in the construction industry . Honesty and reliability are a big part of our make up along side quality workmanship and products we know we have everything you need to get the job done right & on budget

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Reviewed by Dominic on 16/3/2023

Excellent work and service throughout, fair pricing compared to other quotes received and prompt availability. Good communication and management of project by Andy and special shout to Steve who worked throughout the 3 weeks doing an outstanding job. Would definitely use again and recommend to friends.

We are what we would like to call a complete construction company new to Rated People. Due to many years of success and co-projects, we partnered with a Structural Engineer to provide a hassle-free and top-notch service. We have over 30 years of experience with a team of experts who specialize in construction management, design, and build services. Our company has always focused on quality, safety, and professionalism in everything we do. We are committed to exceeding the expectations of our clients and delivering projects on time and within budget. We take pride in our partnership with a structural engineer, who ensures that all of our construction projects meet the highest standards of structural integrity. Our engineer works closely with our team to ensure that each project is designed and built to meet or exceed all local and building regulation codes. Some of the services we offer include 1. Planning Applications: High-quality planning applications that are designed to get approved quickly and efficiently. 2. Design and Build Services: We work with our clients from start to finish, helping them design and build their dream projects. 2. General Contracting: We provide general contracting services for various types of construction projects, including commercial and residential. 3. Project Management: We oversee every aspect of the project, from scheduling and budgeting to quality control and safety. 4. Renovation and Remodeling: We have extensive experience in renovating and remodelling existing structures, ensuring that the final product is both functional and aesthetically pleasing. 5. Painting, wallpapering, flooring, tiling, and much more. Our team of experts has extensive experience in the field and is dedicated to delivering outstanding results that exceed our client's expectations. At our company, we believe in transparency and open communication. We keep our clients informed throughout the entire construction process, providing regular updates and progress reports. We are proud of our track record of success and are confident that we can provide you with the high-quality construction services that you require. Thank you for considering our company for your next project. Made Innovate Ltd

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Reviewed by Lee on 16/10/2023

Did a rear extension with new kitchen and bathroom, the quality was great, very professional, helped out with extra requests no problem. Would definitely recommend and we are very happy with the result.

LSJ Building & Construction is a professional, affordable and reliable company based in Cardiff and the surrounding areas. We guarantee you competent, efficient and punctual building services for any size of project. We are rapidly growing and are happy to be able to say that we have a high percentage of repeat work from satisfied customers. We value our customers’ homes and business premises carrying out our work in a careful and respectful manner, minimising disruption. We are highly experienced contractors and all of our work is carried out by competent persons to current regulations. LSJ Building and Construction covers all aspects of building work including: New Builds Extensions and Loft Conversions Renovations Kitchens and Bathrooms Carpentry and Joinery Driveways, Patios and Fencing Groundwork Foundations and Brickwork Windows, Bi-Fold Doors, Conservatories, Guttering, Fascia's and Soffits Plumbing and Heating Roofing Plastering Tiling Painting & Decorating IMPROVE YOUR HOME THE LSJ WAY!

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Reviewed by Jacqueline on 26/1/2024

Excellent builder and our project has begun

I have a number of years experience in both building new homes and renovation. The work I specialise in includes: - 1st and 2nd fix Carpentry - Kitchens, bespoke wardrobes/ units - fully fitted or purpose built - Solid wood and laminate flooring - Doors and frames - internal and external - Stud partitioning - Finishing, skirting and architrave - Staircases - Wooden decking - Internal/External Painting & Decorating - Garage/Loft Conversions - Fencing/sheds. Extensions, and much more. My team and I aim to offer a high quality building and carpentry service for competitive prices. Good, trustworthy tradesmen are hard to come by, so I pride myself on keeping my clients absolutely satisfied. There are no jobs too big or small, as I am always looking to expand my customer base. I offer a reliable and friendly service with any helpful advice or suggestions. I look forward to working with you.

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Reviewed by jeremy on 30/1/2024

Right from the outset Steve installed confidence in me, his quotation for the work required was not only precise but was exceptionally competitive and fair. As pensioners we have had experience of greedy local tradesman. Steve and his crew arrived on time and carried out the work in a considerate and timely fashion,. They were clean and considerate in the way they worked. Completing the job on time and on budget. I have no hesitation in recommending his services.

Reliable family run business specialising in extensions, groundwork’s and re-roofs. I have over 15 years experience, we pride ourselves on doing an honest job and customer satisfaction is our priority. We’re new to Rated people so are trying to build our profile up with some previous customer reviews please do not be put off by this I can give you plenty of recent jobs where customers would be more than happy to recommend us or even show you the works we have carried out. Thanks, Micky/Paul Durden

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Reviewed by Tony on 11/5/2023

We chose DurdenBuild after a competitive tender process. Mick communicated well and provided a very competitive quote, although not the cheapest. We selected them based on the quality of the builds he showed us and his approach to the job. The work started on schedule and progress to date has been excellent. On what we've seen so far, we would have no hesitation in recommending him.

We are a small company based in Sunderland,we cover all building work including extensions,loft conversions,kitchens,bathrooms and full refurbs

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Reviewed by Michael on 2/4/2024

Unfortunately Steve couldn't come and quote when he said but did text me and say why

We are a specialist company in all aspects of building works including extensions, garden rooms, garage conversions, landscaping, paving and groundwork’s company based in Northampton offering the highest quality workmanship. We have over 25 years of experience within industry and currently have an accomplished team of 30 employees, all of which are trained to the highest standard. We are currently looking to expand our portfolio and delve further into the domestic sector.

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Reviewed by Emily on 21/4/2024

Jason and his team have converted my attached garage into a space for an open plan kitchen dining area with utility room space. This involved bricking up the front of the garage with a new window and windows to the back and new french doors, taking out the existing kitchen and making good the original room. They turned up on time to start the job each morning and worked hard to accommodate necessary changes. They were very friendly, easy to approach and very competitively priced.

Strawberry Construction Ltd. boasts over 20 years of extensive experience in the construction industry. Specializing in extensions, garage conversions, and full house refurbishments, our dedicated team, led by project manager Carl, ensures seamless project management from inception to completion. With in-house architects, we have the capability to undertake and execute your plans with precision. Additionally, our global team of kitchen designers, who have seamlessly transitioned to remote work since the onset of Covid, offers kitchen and bathroom solutions that can be supplied across the United Kingdom, providing quality craftsmanship and design expertise.

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Reviewed by John on 25/4/2023

Diversified services. Unvarying quality. Our NVQ qualified team can provide the best of your expectation.

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Reviewed by Paul on 9/3/2024

A job well done, thank you.

Welcome to DB Building. We specialise in all aspects of building and maintenance works. Ranging from a leak in the roof or a new bathroom. we have an extensive range of services at competitive prices whilst delivering quality.

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Reviewed by Beth on 13/1/2024

Very happy with the work completed and at a competitive price. Dan and team were lovely, great communication, tidied up after completion and we shall definitely be using again.

We pride ourselves on the quality of our work. Tailored to help you in the construction of projects whatever the size and build value.

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Reviewed by Malcolm on 20/10/2023

Excellent work at the right price. Helpful and timely. Restored my confidence in builders.

Tharai is a family run business based in Esher, Surrey. Our team have a combined 20 years of experience working in property development. We have a genuine and transparent approach to our work and are completely client-focused, building long-term

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Reviewed by Raja on 15/3/2024

Kamran provided quote in time, reasonable price consistent with other competitive offers and he has a team readily available. He is quite responsive to queries and refined the scope for a quick and clean execution. Looking forward to completing the project in time, quality and budget.

We are a small company and carry out all building works to include loft conversions as well as extensions we offer a full design and build package and also carry out structural work and structual calculations we also specialise in kitchens and bathrooms

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Reviewed by Ben on 22/3/2024

Paul and company did a fantastic job and were a pleasure to deal with throughout the process. Very clean and tidy, conscientious and efficient. We have since asked them back for additional work and have more plans for the future with them too. Highly recommend.

Premier building Bromsgrove ltd is a company that undertakes extensive building works projects in Worcestershire and the West Midlands areas. With nearly 30 years experience we can cater to all your building requirements and we specialise in domestic extensions. We strive for professionalism at all times and all works are carried out to a high standard. We pay particular attention to reliability as this is one of the areas a lot of customers have issues with. Once we start a project we will be there every day 5 days a week... All quotations are detailed and transparent from the start and if any variations arise the customer will always be informed at the time. We have lots of happy customers and are happy to provide references if required.

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Reviewed by Tychonas on 4/3/2024

Nathan took on a half finished job of a front of house extension and completed it in no time. Accurate quote, reasonable prices constant updates on the progress and always asked us to confirm decisions. Gave his opinion in many stylistic aspects around the house which ended up saving us time and money. Easy to work with and communicate, always on time rain or snow. Highly recommended.

House extensions: An extension is perfect for anyone who is looking to expand any part of their home, including single or double-story extensions, kitchen extensions, side extensions and conversions. Whether you wish to create additional space, or simply want to install a state-of-the-art new kitchen to bring your home into the 21st century, our masterful design team will work closely with you to achieve your desired home extension, we will take care of the project from early stage to submit drawings, obtain planning approval all the way to provide building control certificates. Refurbishments: We take full control of your project, assisting you with designing and sourcing crucial elements of the required work. Whether it be installing fixtures or fitting your doors and windows, giving sound advice on anticipated additional value to every element of the work. Bathrooms and kitchens: First Stone Property offers everything from: Upgrading your shower or toilet Installing a bathroom or kitchen from scratch Replacing your existing kitchen or bathroom suite We will work with you to design your perfect space, from layout and plumbing to fixtures and fittings, you will be given a fully coasted solution before work begins, making sure there are absolutely no hidden surprises along the way. Loft conversions: Loft conversion can have a huge impact in unlocking the hidden value of your home. Loft conversions create an entire new living space from something that was once neglected. We can convert your unused loft space into a liveable area, such as a bedroom, office, living room or play area. Loft conversions are a great way to add extra space and value to a property and, most importantly, they can be a very affordable investment.

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Reviewed by Robert on 19/11/2023

Really thorough and great advice throughout the build kept me up to date and chased suppliers. Emeil is a great source of advice

Wolverhampton based building company offering building & renovation services. We specialise in extensions, garage conversions and complete house renovations. All quotes are offered free of charge without obligation. Quotes can be undertaken on an evening or at a weekend at your convenience. We can also arrange architectural services, structural engineer calculations and building notices. All works completed come with a 10 year workmanship guarantee and we can also arrange for all works to come with an insurance backed warranty.

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Reviewed by Tracey on 5/4/2024

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