Local house extension experts
Over 10,000 rated tradespeople
are ready to help you get your job done
Over 3 million happy homeowners
have found a quality tradesperson
Over 1 million ratings
with 88,000 5* ratings in the last 12 months
Join our group of happy customers
Thousands of 5 star reviews
Read real reviews from customers about their service experiences.
Craig got in touch quickly, gave me a rough estimate over the phone and answered all my questions. Surveyor arrived on time, gave instant quote. Price was good. Michael and (another) Craig turned up to do the job on the day, time given. Good, tidy job. Can't fault anything, from start to finish!! Would recommend!
Mary
George and his team are experienced builders, replaced my front door with a custom frame/sidelights and raising the floor level in the hallway quite quickly - in fact, they were the only who came next day, gave a quote straightaway and were ready to start in just couple of days. They also had all the necessary tools and materials, were ready to buy something additional quickly on the day - if further adjustments were required to fit everything as I asked. Thanks a lot for your help, guys!
Dmitry
Highly recommend. These guys did a fantastic job of constructing our pergola and decking. Very hardworking and reliable. The job was completed in the time frame agreed and to a very high standard. We would 100% use them again.
Holly
At Rated People, we understand how daunting it can be to invite a stranger into your home for a major project like a house extension. That’s why we connect you with trusted local house extension experts who have been thoroughly vetted and reviewed by other homeowners. With over 10,000 skilled tradespeople on our platform and more than 3 million satisfied customers, you can count on us to find the right professional for your house extension needs.
We know that large projects can be overwhelming, so we provide extra support to help you find all the right tradespeople to ensure the job gets done right. You can check previous reviews to see the quality of work our tradespeople deliver, giving you peace of mind before you start. If you need more information, read through our helpful guide below. And if you are a house extension expert, click on the link below to sign up with Rated People.
Browse House Extension specialists
Take a look at our House Extension specialists profiles, read reviews and request quotes directly.
Local house extension experts
What is a house extension?
A house extension is a significant home improvement project that involves adding extra space to your existing property. This can be achieved by extending the structure outwards or upwards, creating additional rooms or expanding existing ones. House extensions can range from small single-room additions to large multi-room projects that completely transform the layout and functionality of your home. Common types of extensions include:
- Single-Storey Extensions: Ideal for expanding living areas such as kitchens, dining rooms, or living rooms.
- Double-Storey Extensions: Add multiple rooms and increase overall living space without sacrificing garden area.
- Loft Conversions: Make the most of unused attic space to create extra bedrooms, offices, or playrooms.
- Basement Conversions: Convert existing basements into habitable spaces for entertainment, storage, or additional bedrooms.
- Garage Conversions: Transform your garage into a functional living space, such as a guest room, home office, or gym.
Cost of a house extension
The cost of a house extension varies widely based on several factors, including the size and type of extension, the materials used, and the complexity of the project. Here are some general cost estimates to help you plan your budget:
Factors Influencing Costs
- Size of the Extension: Larger extensions require more materials and labour, increasing the overall cost.
- Type of Extension: Different types of extensions (single-storey, double-storey, loft conversion) have different cost implications.
- Materials Used: The choice of materials for walls, flooring, roofing, and finishes can significantly impact the cost.
- Location: Costs can vary based on your location, with projects in urban areas typically costing more due to higher labour rates and material costs.
- Complexity: The complexity of the design and any structural changes required can increase costs. Unique architectural features, custom fittings, and intricate designs will add to the overall expense.
Average Cost Estimates
- Single-Storey Extension: £1,200 to £1,800 per square metre.
- Double-Storey Extension: £1,500 to £2,500 per square metre.
- Loft Conversion: £1,000 to £2,500 per square metre.
- Basement Conversion: £2,000 to £3,000 per square metre.
- Garage Conversion: £5,000 to £20,000, depending on size and specifications.
These estimates include basic construction costs but may not cover additional expenses such as planning permission, architectural fees, and interior finishes.
What kinds of tradespeople do I need for a home extension?
A successful house extension project requires the expertise of various tradespeople. Here are the key professionals you will likely need:
- Architects and Designers: To create the plans and designs for your extension, ensuring it meets your needs and complies with local regulations.
- Builders: To handle the construction work, including laying foundations, building walls, and roofing.
- Electricians: For all electrical installations, including wiring, lighting, and power outlets.
- Plumbers: To install and connect plumbing systems for kitchens, bathrooms, and any other water-related needs.
- Carpenters: For structural woodwork, custom fittings, and cabinetry.
- Plasterers: To finish walls and ceilings, ensuring a smooth, professional look.
- Painters and Decorators: To add the finishing touches, making your new space aesthetically pleasing.
- Flooring Fitters: To install flooring that complements the rest of your home.
- Roofers: If your extension involves roof alterations or new roofing.
- Surveyors: To assess the site, check the structural integrity, and ensure the project meets all building regulations.
Other house extension FAQs
Do I Need Planning Permission to Extend My House?
In many cases, house extensions require planning permission from your local council. However, some extensions may fall under Permitted Development Rights, which allow for certain types of extensions without the need for formal permission. It’s essential to check with your local planning authority to determine the requirements for your project.
Will an Extension Add a Lot of Value to My Home?
A well-designed and executed extension can significantly increase the value of your home. Extensions that add additional bedrooms, bathrooms, or improve the overall functionality and aesthetics of the property tend to offer the highest return on investment.
How Long Does an Extension Take?
The duration of a house extension project depends on the size and complexity of the work. On average, a single-storey extension might take around 3 to 6 months to complete, while more extensive projects, such as double-storey extensions or loft conversions, can take 6 to 12 months or longer. This timeline includes planning, design, construction, and finishing phases
Sign up as a home extension expert
Sign up with Rated People to connect with high-quality homeowners looking for house extension builders. We do the legwork by providing you with leads, so you only need to quote for jobs that match your skills. With tens of thousands of ads posted every month, there’s always a demand for your services. Plus, with larger jobs like a house extension, we take the time to confirm homeowner budgets and timelines, ensuring your time isn’t wasted. Join today to grow your business with Rated People.
We are a family business, specialising in home extensions and one off new build Bungalows and houses since 1974. We offer a design and build service, looking after Planning permission and building regs drawings for you. Many local references available.
Steve ward provided us with an outstanding finished product including a 15sq meter rear extension with fitted kitchen cloakroom & utility. he also drew up the plans , his quote was very reasonable and it came in on budget. Steves team of Ryan Graham Paddy & Dave were a pleasure to deal with and the workmanship was of the highest standard. They were considerate at all times and were very clean workers. My wife said they helped here get through lockdown. absolutely no hesitation in reccommending them.
'%3e%3cpath%20fill-rule='evenodd'%20clip-rule='evenodd'%20d='M12.5%2020.392a1%201%200%2001-.54.888l-5.274%202.73a1%201%200%2001-1.435-1.109l1.494-6.588a1%201%200%2000-.306-.964l-4.723-4.254c-.65-.586-.287-1.666.585-1.74l6.105-.514a1%201%200%2000.846-.629L12.5%200v20.392z'%20fill='%23F7DB34'%20/%3e%3c/g%3e%3c/svg%3e){kind=small}
Our team of skilled professionals is dedicated to delivering outstanding results, whether you need general maintenance, plumbing, TV mounting, painting and decorating, carpentry, furniture assembly, hanging and wall mounting, or floor sanding. No job is too big or too small for our capable hands.
We have been working at this trade for over 15 years. My company and works people hold a number of different NVQ qualifications such as electrical, engineering, railway engineer, civil engineering. We take customer service very seriously and we ensure to reply as soon as possible when someone contacts us. We also ensure we give a fair deal for a great service in return.
We hired Cani Building Services to replace the front stairs and pathway of our Victorian home with granite pavers in the spring of 2025. When evaluating the builders it was important to us that we found somebody who was professional, reliable, and detail-oriented. Durim offered a competitive quote and promptly started work. ?He completed our job to a high level of quality within a week’s time, and we are very pleased with the outcome. We would absolutely recommend his services to others!
We are general builders and groundwork contractors going the extra mile ,we have many satisfied customers more info can be supplied on request , check out my website all work has been completed by.uS. To a very high standard
MWE Builders removed our old garage, re built a new larger block construction garage, and we are very pleased with all of the work completed. Throughout the build we were kept informed of every stage, Matt was on site every day, even through some horrible wet weather. I would highly recommend MWE Builders, for price, quality, and friendliness. Thank you Matt, we appreciate all of the work you have done. Many Thanks Will and Wendy Kingswood Bristol
London City Roofing & Renovations ltd is an established and trusted company with over 20 years experience, offering all aspects of roofing and building services. We are based in Wembley (London) serving all of London and surrounding areas within 100 miles.? We pride ourselves on our punctuality and quality workmanship, offering a prompt and professional service with experienced and expert staff. We guarantee a friendly, clean and tidy service with all work being to the highest standard. We are fully insured and all work is guaranteed. All our tradesmen are experienced and qualified in their respective trades. We specialise in the following: Roofing services: UPVC Fascias & Soffits Cladding Guttering Bargeboards Flat Roofing Chimney Repairs Tile & Slating Work Re-Roofs Lead Work General Building Work Fibre Glass Roofing Double Glazing Building services: Home improvements Kitchen Fitting Bathroom Fitting Extensions Loft Conversions Garage Conversions Bricklaying Plastering Comprehensive driveway and paving service, including: Driveways Drop Kerbs Patios Paths Block Paving Concreting Tarmacing Car Port We offer free quotes
John and the team did an outstanding job. It was easy to work with John and he was very knowledgeable, and provided very sensible advice. Other people quoted work which was over-the-top or wouldn't have solved the problem but John got right to the issue in a no-nonsense way. Quality of the work undertaken was very good, considering the age of the building and complexity. Would recommend.
Builder and maintenance contractor with over 30years experience in general building and roof, chimney repairs, leaking roofs and general repairs , any building works considered, we have repaired buildings of all ages and built walls Ect, any maintenance issues fixed and all work insured and guaranteed, also a roof washing system where we was repoint and seal with a waterproof coating, Loft insulation and damp proofing
Peter contacted me very quickly after I'd posted the job. He was very good, liaising with my tenants to get access and rang promptly to report back on what the issue was. Very prompt dealing with it, reasonable cost and really friendly guy. Would certainly use him again for any future issues.
JBS HOME IMPROVEMENTS LTD
House Extension
At JBS Home Improvements Ltd, we pride ourselves in completing work to a high standard and stylish finish. We are regularly praised by our customers for our communication throughout projects and our employee's excellent manner with customers. All of our team are uniformed, insured and drive sign-written vans. We employ a team of highly skilled, experienced and local tradesmen for each trade. This means that we don't subcontract; so you know exactly who is going to arrive at your home each day. We specialise in being able to project manage your build, from the initial planning and designing stage, right through to completion and the final coat of paint. All of our work is guaranteed with our own 25 year JBS Home Improvements Guarantee. As Registered FreeFoam Installers, we also offer a 50 Year Manufacturer Backed Guarantee. So you can rest assured, you're in good hands with the professionals.
Good, conscientious company. High quality work. Orders completed on time, professional service and honesty to their customers.
Work to retile the bathroom was scheduled promptly and delivered very well, on-time and in line with the quote. Wouldn't hesitate to use again. Tidied up and left things looking smart.
27 years experience a company you can trust,leave nothing to detail.
Steve replaced our guttering, downpipes and a bargeboard. It wasn’t a straightforward task as it’s an old property but he did an excellent job and carried out the work quickly and efficiently at a competitive price. I would highly recommend him.
Welcome to our page! Who we are: The company was founded in 2015 and since then has registered a rapid growth in its expertise, reputation and a wide acknowledgment in the community of South West part of London. This was possible to achieve with our dedicated team that has its primary motivation and a magnificent obsession to put SERVICE FIRST! Our team has experience of over 20 years of working in the field and we put passion to all details as we think that details are responsible for making the difference between good job and a great job, between average job and outstanding job! We understand that our succes is not only possible because we meet the expectations of our clients but we are committed to exceed them. Our experience tells us that you will not only remain pleased with our service but you will tell all your friends about it and that is how we expanded. It is pleasing to notice how our old clients are keeping coming back to us and referring their friends. What we do: We have a creative approach to deliver to you what you want in the best way possible. We do that by designing, remodelling, creating, building and finishing of your living or working space. We know how to turn your house into a place where you will enjoy spending time. Your house should be your favourite location, it should be a place where you could recharge, you could feel good instantly as you enter it and we know the science behind it, even down to the colours of your walls, the arrangement of your furniture and how that affects your state of being. We know how to create that environment that stimulates your well-being. Either you think to redesign your kitchen, your bathroom or any other of your living spaces, we are committed to serve you and help you to make your dreams a reality. We give colours to your dreams! Why? We believe you deserve a better experience when you are undertaking any design, building or decorating project and it shouldn't be a hassle. We believe your house can be transformed to a holiday destination! We believe service first approach is how business should be conducted. We believe there can be trust of 100% because we consider our clients our bigger family and are guided by the philosophy that what we do to another affects us ultimately. We want you to be our next happy costumer and we want to develop a long term relationship with you so that you enjoy the process of your renovations. The journey can be pleasing as well!
I cannot rate this company highly enough Reliable, hardworking and trustworthy I will definitely use them again
We are competitively priced and we can handle everything from basic installations to complete renovations.No job is too small or too large and we look forward to taking on new and innovative designs.
Perfect professional clean work. I can’t be happier!
Aspray South West Thames manage property damage insurance claims. We act on behalf of the policyholder, negotiation the claim with the insurance company, then project manage the reinstatement works from start to finish. Aspray (South West Thames) is a trading name of G. D Property Services Ltd and is an Appointed Representative of Aspray Limited who are authorised and regulated by the Financial Conduct Authority for claims handling only.
Job done professionally and in a timely manner. Excellent Service.
My name is Max Akkaya and my company started with plumbing and bathroom refurbishments after graduating from my NVQ level 2 course in Heating and Ventilation. In the last 20 years we have evolved into One Stop Design and Construction Ltd - a fully insured company that covers all aspects of home improvements such as loft conversions, extensions and bespoke refurbishments. I haven’t been on Rated People in a while as I have got all my work through recommendations, however I recently moved to Surrey so I am building my client base out here also. I’m straight forward, honest and pride myself to giving attention to the smallest of detail. We undertake small and last scale projects and work with a team to deliver loft conversions, extensions and bespoke refurbishments including all plumbing, electrical and gas needs.
Very pleasant experience. Punctual, polite, efficient and friendly. The job was finished to a very high standard. Would recommend 100%
We are a small but an ever expanding company covering most areas of the midlands, we do all aspects of building and roofing work. We are also available for property maintenance and landscaping. All our employees are respectable, hardworking people who are definitely not shy of work.
8 months after install the gutter had warped and was spilling water. Luke was initially happy to install a couple extra brackets - 3 times he set dates to do the work then didn't turn up and didn't let me know he wasn't coming. I had to pay someone else to fix this job.
Here at Nexus Interiors, we have over 10 years experience in all building aspects. We provide services such as bespoke carpentry, Tiling, Plumbing, Decking and minor electrical work! We aim to provide a high quality service to ensure your vision comes to fruition.
Danny General Builders specialises in structural work, extensions, refurbishing, loft conversions, roofing, fitting bathrooms and kitchens, and painting and decorating. All employees have more than 10 years experience and are insured.
Danny did an absolutely great job with my set of alcove shelves. He was friendly, diligent, extremely polite and did an excellent job. Highly recommend
Our building services company RMR Building & Renovation Ltd has over 15 years’ experience in the industry. We have been helping customers in Essex and the surrounding 20-mile radius by providing professional, trustworthy building services. We know it can be hard to find a builder that you can rely on RMR Building & Renovation Ltd has a wealth of experience and is known as one of the best builders in Essex. We pride ourselves on providing a professional, caring and high-quality service and always meet our customers’ needs. RMR Building & Renovation Ltd delivers on timekeeping, quality of work and value. We offer a full range of building services, from major rebuilds to smaller jobs such as masonry repairs, including: New Builds Alterations, Extensions & Conversions Brickwork Concrete Plastering & Screeding Tiling Painting & Decorating Kitchens & Bathrooms Roofing Services Re-pointing Septic Tanks Excavation Services Soakaways Foundations External Works Drainage If you are trying to find a builder near you, why not give us a call? Our friendly, professional team will be happy to talk through your needs and give you a free, no-obligation quote.
Professional, quality work,worth money
J R Griffiths roofing we specialise at 're roofing, slate tiles and leadwork. also chimney work undertook. Rubber roof and also grp
Reasonably priced, job completed the next day couldn't ask for anything more.
From a single wall to a complete house, inside and out, plastering/rendering. Also roofing, stonewalling, extensions and general maintenance....no job too small. Please feel free to email me or leave me a message and I'll get back to you.
Reliable, personable, conscientious, trustworthy and reasonably priced. Can definitely recommend .
Services we offer include but are not limited to: -Brick and blockwork -Fencing (new and repairs) -Artificial grass / turf installation -Block paving/patio -Garden landscaping and design -Security fencing/gates -Demolition
Thank you did a great job
'%20rx='20'%20/%3e%3cg%20fill='%23FFF'%3e%3cpath%20d='M29.376%2016.914c-.555%200-1.006.454-1.006%201.013v37.416c0%20.578.472%201.014%201.097%201.014h34.109a1.007%201.007%200%200%200%20.972-.83%201.012%201.012%200%200%200-.161-.76l-6.446-9.416c-.375-.548-.567-1.085-.586-1.642-.034-.977.516-1.952%201.402-2.483%204.8-2.878%205.808-7.575%205.808-11.009%200-7.335-5.925-13.303-13.207-13.303H29.376ZM63.594%2059.75H29.467c-2.505%200-4.467-1.936-4.467-4.408V17.927c0-2.43%201.963-4.408%204.376-4.408h21.982c9.14%200%2016.577%207.49%2016.577%2016.698%200%205.879-2.46%2010.687-6.944%2013.607l6.17%209.017c1.37%202.002.868%204.752-1.12%206.132a4.336%204.336%200%200%201-2.44.778h-.007Z'%20/%3e%3cpath%20d='M38.767%2027.797c0-.749.603-1.357%201.347-1.357h6.427c3.979%200%206.426%201.72%206.426%205.099v.123c0%203.132-2.325%205.098-6.365%205.098h-3.848l-3.985%203.998V36.76h-.002v-8.963'%20/%3e%3c/g%3e%3cpath%20fill='%23FFF'%20fill-rule='nonzero'%20d='M18.176%2069.2h2.156v3.878h3.976V69.2h2.156V79h-2.156v-3.934h-3.976V79h-2.156v-9.8Zm16.428%207.98c.43%200%20.826-.08%201.19-.238a2.72%202.72%200%200%200%20.931-.658c.257-.28.457-.604.602-.973a3.21%203.21%200%200%200%20.217-1.183V74.1c0-.42-.072-.817-.217-1.19-.145-.373-.35-.7-.616-.98a2.96%202.96%200%200%200-.945-.665%202.873%202.873%200%200%200-1.19-.245c-.439%200-.838.08-1.197.238-.36.159-.667.378-.924.658s-.457.604-.602.973a3.21%203.21%200%200%200-.217%201.183v.028c0%20.42.072.817.217%201.19a2.959%202.959%200%200%200%201.554%201.645c.36.163.758.245%201.197.245Zm-.028%201.988a5.343%205.343%200%200%201-2.086-.399%205.187%205.187%200%200%201-1.645-1.078%204.823%204.823%200%200%201-1.078-1.596%205.029%205.029%200%200%201-.385-1.967V74.1c0-.7.13-1.356.392-1.967a5.075%205.075%200%200%201%201.085-1.61%205.05%205.05%200%200%201%201.652-1.092%205.395%205.395%200%200%201%202.093-.399c.756%200%201.451.133%202.086.399a5.187%205.187%200%200%201%201.645%201.078c.462.453.821.985%201.078%201.596.257.611.385%201.267.385%201.967v.028c0%20.7-.13%201.356-.392%201.967a5.075%205.075%200%200%201-1.085%201.61%205.05%205.05%200%200%201-1.652%201.092%205.395%205.395%200%200%201-2.093.399Zm8.14-9.968h2.324l2.576%204.144%202.576-4.144h2.324V79h-2.142v-6.398l-2.758%204.186h-.056l-2.73-4.144V79h-2.114v-9.8Zm13.152%200h7.392v1.918h-5.25v1.988h4.62v1.918h-4.62v2.058h5.32V79h-7.462v-9.8Zm13.866%209.94a6.49%206.49%200%200%201-2.198-.385%205.817%205.817%200%200%201-1.96-1.183l1.274-1.526c.448.364.908.653%201.379.868.471.215.987.322%201.547.322.448%200%20.796-.082%201.043-.245a.771.771%200%200%200%20.371-.679v-.028a.85.85%200%200%200-.077-.371.778.778%200%200%200-.294-.301%203.079%203.079%200%200%200-.602-.28c-.257-.093-.59-.191-1.001-.294a12.201%2012.201%200%200%201-1.344-.406%203.787%203.787%200%200%201-1.022-.553%202.237%202.237%200%200%201-.651-.819c-.154-.327-.231-.733-.231-1.218v-.028c0-.448.084-.852.252-1.211.168-.36.404-.67.707-.931a3.183%203.183%200%200%201%201.085-.602c.42-.14.882-.21%201.386-.21a5.86%205.86%200%200%201%201.981.322%205.743%205.743%200%200%201%201.659.924l-1.12%201.624a7.1%207.1%200%200%200-1.288-.707%203.292%203.292%200%200%200-1.26-.259c-.42%200-.735.082-.945.245-.21.163-.315.366-.315.609v.028c0%20.159.03.296.091.413.06.117.17.222.329.315s.376.182.651.266c.275.084.623.182%201.043.294.495.13.936.278%201.323.441.387.163.714.36.98.588.266.229.467.497.602.805.135.308.203.677.203%201.106v.028c0%20.485-.089.917-.266%201.295a2.66%202.66%200%200%201-.742.952%203.353%203.353%200%200%201-1.134.588%204.924%204.924%200%200%201-1.456.203Z'%20/%3e%3c/g%3e%3c/svg%3e)
Get our app for homeowners
- Send messages and get notifications from tradespeople
- Add photos to get more accurate quotes
- View tradespeople's profiles