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.
Building company based in wednesbury providing quality workmanship with individual design to meet your requirements.
Came to see the job and was cheerful and helpful. In the end the job went to someone more local but I would certainly consider Nashir for future jobs.
Family run business since 1995. My son and I pride ourselves in high standards. Design - Build - Maintain. Sustainable builds including extensions and loft conversions. Renewable heating and hot water installations. Full bathroom and kitchen renovations.
Very pleased with Francisco got our shower working and moved the radiator for us. Good communications arrived on time and also helped us out for another call. Thanks
'%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}
What makes us the Best We are a reliable, punctual, tidy and most importantly a friendly team that you can rely on. WE ALSO PROVIDE A GENERAL BUILDING SERVICE which include .PAINTING,TILING,PLUMBING,BATHROOMS AND KITCHENS,FENCING,PATIOS AND MUCH MORE Our customers are our number one priority, and we carry out each job to the highest standard of workmanship. Call us today for free advice and quotations
Apollo were very good quote but it was to much, so I emailed them
Really can’t fault Trojan, from the initial quote we felt comfortable that Nick understood what we needed. The initial quote escalated and nothing was too much trouble. We now have a home to be proud of and can’t thank Trojan enough for everything they have done.
Luke Taylor Construction
House Extension
Before anything else, preparation is the key to success!!! All jobs require the highest level of effort and attention to detail, my belief is every customer deserves the service I would expect for myself. I can offer professional advice and assistance to the keen DIY’er or self builder. Alternatively, I can take on and complete your home improvement projects. No job too big or small. Exterior jobs include but not limited to: •Painting •Patios & Decking •Driveways •Fencing •Drainage •Sheds and bases •Raised planters •Landscaping •Garden clearance •Demolition work •All small jobs including garden furniture assembly Interior jobs include but not limited to: •Painting and decorating •carpentry work •Light fittings and socket replacement •Flooring, skirting boards, door hanging & architraves •Blinds and curtain poles •Shelving and wall mounted TV’s •Bespoke built in wardrobes & media walls •Wooden furniture Repairs •Furniture and flat pack assembly I have the experience and knowledge to deliver most home projects. All jobs considered
My name it’s Cris. I am a person with many qualities in handyman.What a handyman means? A handyman, also known as a handyperson or handyworker, is a person skilled at a wide range of repairs, typically around the home. These tasks include trade skills, repair work, maintenance work, are both interior and exterior, and are sometimes described as "side work", "odd jobs" or "fix-up tasks". For me a handyman means the person who helps the people who are in need or not having the necessary training for that thing and at the same time the one who later gives a smile to the people's face. For this, please contact me in any need you have
Initial service was great. But grass that was laid hasn’t last a year with a lot of patches and bits that have died. I watered and cut the grass regularly as I trusted but the grass just hasn’t lasted. Unfortunately, after several requests for help, Christian hasn’t been very responsive and showing no signs of helping.
Hi, we are a small business based in DONCASTER,and surrounding are. We specialise in bathroom refurbs, disabled level access wet rooms, tiling and plumbing. We offer a very friendly and enjoyable service as we know having work done can be a stressful which is our top priority to make sure this isn't the case. With 10 years’ experience we now have the experience at hand to make sure all work is at the highest standard. We are fully insured for all work we carry out. We always offer a competitive quote for our work and we are very professional at what we do. We pride ourselves in our reputation. We hope our feedback speaks for itself. K&F decorative is one of the Doncaster Property Maintenance Service. We have over 10 years’ experience in property maintenance, working in high end residences, as well as office and retail spaces. It is our aim to provide an outstanding, bespoke customer experience, to leave every customer delighted with the service and the job they have received . Our tradesmen carry out thousands of skilled jobs including: plumbing, handyman, painting and decorating, finding and resolving leaks, dr
Very punctual and helpful and job done to perfection Many thanks
Welcome to our distinguished construction and roofing company in North West London. With over 20 years of experience, our skilled team delivers excellence in: - Building, - Roofing - Plastering, - Plumbing, - Carpentry - Painting - Plumbing - Electrician Discipline drives us to maintain high standards of cleanliness, efficiency, and precision in every project, no matter the size.
We needed some remedial decorating following water damage to hallway and some rooms. Amin and his colleague from Bizzlab did a very good job. They were efficient and neat and communicated well. I'd certainly invite them to do future decorating here.
Here to help all home owners no job too big to small here to make everybody happy to suit the pocket over 15 years experience
Really good job done on repairing my deck. Will use again
We are a company with experience in domestic installers we offer all type of general building services.You can be assured that your job is in the safe & professional hands! FREE estimates and call out of charge.Visit us on Facebook for more info: @2BROTHERSCCONSTRUCTION. Thank you!!!
We're so delighted that we went with TBC. TBC completed major works on our property - structural works, full electrics/re-wiring, plumbing, tiling, decorating, new flooring, new bathroom etc. etc. TBC were so professional throughout and had all the relevant knowledge with regards to certificates and approvals needed. They worked incredibly hard and to the highest quality. They have been readily available to come over and finish off the final snags. We look forward to working with TBC again for our loft!
We have just been asked to join Rated People ,so our ratings do not exist yet. However with over 30 years experience and countless jobs under our belt, we can do anything from fixing a broken tile to complete refurbishments and extensions. New drains to a new roof we can do it all, and do it well. Kitchens, bathrooms, alterations redecoration, all in a day's work for us. An Island family firm ,with excellent references and recommendations . We are recomended by estate agents and property management services. Friendly reliable service at realistic prices. We finish on time on price. For a builder you can trust, call us.
didn't even turn up waste of time if you don't want the job just say so its best all round.
WELCOME TO D.D BUILDING AND LANDSCAPING A small family team who can provide lots of services: PAINTING AND DECORATING TILING, FLOORING, PLASTERING RENDERING Astro Turf Block Paving Block Paving Driveways Brick Pavers Brick Wall Bricklaying Contractors Complete Design Concrete Driveways Construction Works Decking Driveway Repairs Driveways Fencing Full Garden Design Garden Buildings Garden Cleared Garden Fences Garden Landscaping Ideas Garden Lighting Garden Maintenance Garden Makeovers Garden Walling Garden Walls Garden clearance and tidy ups Gravel Driveways Ground Maintenance Hard Landscaping Home Extensions Home Improvement Landscaping Project Large Garden Natural Stone Patio New Driveways New Turf Outdoor Room Patio Design Patio Repairs Patios Paving Slabs Picket Fencing Property Maintenance Resin Bonded Driveway Resin Bound Driveways Retaining Walls Smaller Garden Turfing We specialise in all types of hard landscaping such as driveways, patio installations, garden walls, outdoor kitchen, ponds, artificial grass and much more. We also carry out soft landscaping, create planting schemes and offer a full Landscape Design service. Insurance work is undertaken, we have £1m public liability insurance and we accept all major credit cards.
We are a family company & pride ourselves in providing a professional, honest , reliable & courteous service. With 40 years experience in the building industry. All aspects of building & joinery work are covered & all work is carried out by qualified tradesmen. We are new to Rated People & are keen to get started so we can build up some great reviews.
Highly recommend What a fantastic team Gary and Lewis are. Not only did they do a great job in our utility room, but they were on time, polite, courteous and incredibly tidy. Gary also arranged any subcontractors needed and the job was amazing value for money. We have already booked Gary in for other work in the New Year.
Universal Construction LTD
House Extension
Universal Construction Ltd is a London-based building company established in November 2023, specializing in domestic construction projects. Registered at 118 Sydenham Road, London, SE26 5JX, the company focuses on the construction of domestic buildings ?. Services Offered • Home Renovations: Including kitchen and bathroom refurbishments. • General Building Work: Covering various aspects of domestic construction. • Property Maintenance: Ensuring the upkeep and repair of residential properties. A recent customer review highlighted a successful renovation project, praising the team’s professionalism and quality of work . ? Additional Information • Owner: Gezim Bajrami • Checkatrade Member Since: 2025 • Service Area: Primarily London • Work Undertaken: Both domestic and commercial projects • Estimates: Free estimates are provided • Insurance: Public liability insurance is in place
J4H Civil Engineering Ltd is a trusted company providing a range of property maintenance and home improvements for domestic and industrial customers in Feltham, Middlesex, West London, and the surrounding areas.
Delighted with the service received from this company. Completed the job to quoted budget and well within the maximum timeframe quoted including doing some extra work (painting hallways, replacing spotlights) that weren't in the original job. Everything looks really good, and I wouldn't hesitate to recommend them.
Trueline Finishes
House Extension
At TrueLine Finishes Ltd, we’ve built a reputation over the past 16 years for delivering top-quality finishes across a wide range of projects. Whether it’s home improvements, full refurbishments, or large-scale extensions, we handle it all with precision and care. We pride ourselves on not only the quality of our workmanship but also our reliability and the strong, lasting relationships we build with every client. If you're looking for a trusted partner who delivers excellent results on time and within budget, TrueLine Finishes Ltd is the right choice for your project.
i have over 20yrs experience in the building trade .have nvq level 2 brickwork qualification also work with various types of building companies to gain more knowledge in the industry ..i am firm believer in letting my work speak for itself.
Paul repointed a garden wall that was starting to crumble. Excellent work. He was on time, super friendly, and easy to talk to and he did a great job. I was also very happy with the price which was below what others had quoted.
Weardale Construction have been in business for over 16 years. Our main works include extensions, loft conversions, sun rooms and conservatories, We are a team of 8 covering all services without the need to sub contract out any works
S&D Construction Services is a premier general construction business with over of 23 years of Experience in the construction industry, we have established ourselves as a leader in delivering comprehensive construction services with a wide range of sectors including residential and commercial projects across London Our mission is to provide exceptional construction services and client-focused approach to every project we undertake
Fantastic job adding textured render around our newly fitted patio doors and on a blocked up old door. Was a particular finish we were looking for and the match was spot on. Highly recommended
Dedicated to our craft. We cover all aspects of building work including: - home extentions - renovations - conversions - plumbing and heating - kitchens - roofing - all general building work
Gary and his team are very professional and did an excellent job. Gary takes a great pride in his work and does all the preparation necessary to ensure a smooth and efficient job. Had extra work done re rendering, driveway and patio as their work was so good. Would recommend
'%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