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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.
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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
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We are a family run company which specializes in flat roofing, all chimney repairs Loose bricks, re-pointing work, roof repairs, lead work, leaking roofs, pitched roof's Replacing Chimney Caps Repairing flat roofs etc We have experience on private and commercial contracts, Learning avast experience in the roofing trade there are very few problems we haven't come across before and would be happy to give you a free, no obligation quote for fixing any problems big or small. We are fully insured for your peace of mind. We pride ourselves on our reputation. Most jobs we take before and after photos so you can see exactly what we are doing We pride ourselves on customer satisfaction For a free no obligation quotation and advice please feel free to call. Kind regards,Andrey We can provide the following services: Flat roof repairs and replacement GRP fibreglass roofing Firestone rubber roofing Guttering cleaned, repaired or replaced Ridges repointed Fascia’s, soffits & guttering Exterior painting All roof repairs Pitched roofing Roof leaks Repointing New roofs Moss removal All Chimney repairs Replacing broken tiles slates etc We are also skilled in services such as: Shed roofs re-felting guttering cleaning service. High pressure cleaning roofs walls, etc. All exterior maintenance Bricklaying Wall repairs Cleaning facias and soffits Andrey ,free quotation
Work was done efficiently and quickly, and to a high standard . We will definitely use this company again.
KCR LOFT CONVERSIONS LTD
House Extension
We are a carpentry based company providing high quality loft conversions in the Northants, Bedfordshire, Buckinghamshire and Leicestershire areas for the last 2 years before that we are carpenters in the construction industry for 18 years please contact us for competitive pricing and high quality work with our architectural partners we can help from conception to completion and negotiate the planning side and building regulations that can be required. Did you know that most lofts can be converted as long as you have 2.3m from ceiling to top of ridge and you no longer require full planning most can be done through permitted development but we recommend that all clients obtain a certificate of lawfulness with there build it’s just better practice of you come to sell your property later on
Quick and professional
Building specialists in the Norfolk area showcasing high quality work with over 10 years experience Qualifications: Level 3 diploma electrotechnical Nvq level 2 bricklaying 10 years roofing & general building experience
Quick to reply, efficient service, would recommend.
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Full property renovations, extensions, loft conversions, outbuildings & more.
Absolutely useless made our life a misery never book these had a bathroom fitted horrible job then when it leak and destroyed my front room ceiling trust when I say don't use them .
Kierda Construction is a family-run building company with more than 30 years in the trade. Although we are based in Hampshire, we also work in Surrey, Sussex and beyond. As well as our extensive experience in building extensions, bathrooms & conservatory roof renovations (lightweight roof) we can also offer: Porches Landscaping Patios Roofing Tiling Bathrooms Kitchens Doors and windows Painting and decorating We pride ourselves on our excellent workmanship and always work to the highest standard, We are very competitively priced. Which is why 90% of our work is recommended. Please call or email us to arrange a no-obligation quote. We look forward to hearing from you.
I couldn't be happier with the service provided by the Kierda Construction. We renovated our porch, toilet and bathroom (completely gutted). Quote was clear. They have completed everything in a timely manner. During the works I wasn't at home, but they kept me updated on everything. Very respectful of the property and high quality work done. Incredible attention to details from the whole team. Absolutely over the moon, I hope to spread the word for them because they truly deserve it!
ENVIRONMENTAL SERVICES LONDON LTD
House Extension
At Environmental services London ltd we provide services such as Damp proofing, internal renovations, Roofing and building, UPVC double glazing/cladding and general home improvements
Welcome to Property Renovation and Decorating Services: " PROFESSIONAL SERVICE " We are professionals builders with over 17 years experience on all building works: extension loft conversion refurbishment bathrooms kitchens painting and decorating plastering, wood flooring, carpet fitting, tiling. building works undertaken: General Building, New Builds, full Interior & Exterior, renovations and much more. Emy has been providing professional home renovation services for over 17 years. He is praised by the customers for his attention to detail, responsiveness, timeliness and quality work. Call (text) for a free consultation and estimate:
Amazing and fantastic work done by this company. Builders listened to what I wanted done and went above beyond what I expected. Very professional throughout the weeks working here. They are neat and tidied up after themselves as well as being highly skilled. The inspection officer was very pleased with the outcome. Don’t hesitate to contact this company, if you are looking for a good, fast pace builder, this is the right company to go to.
General builders
NORTH WEST LONDON RENOVATIONS is a well established, trustworthy, reliable and professional company. We serve Acton, Ealing, Hammersmith, Kilburn, Paddington, Brent, Westminster, Hampstead, West Hampstead, Primrose Hill and all surrounding areas of N, NW and Greater London. Our service is professional, caring, and high quality. Our customers rate us highly for our ability to stick to deadlines, and for the quality of our workmanship. We provide a professional service from the initial free quotation to the end professional finish. Our service is friendly, clean and tidy, and reliable. We consider no job as too large or too small and offer very competitive prices
Had scaffolding up very quickly. Started job on time and finished in a week. Very impressive. Good communications and reasonable price.
We at Express Services painting-decorating-tiling and flooring provide quality professional and affordable work carried out and aim to keep the clients happy and satisfied with our work.
Hard working, honest and trustworthy. Good quality work and willing to go the extra mile.
Simicus Construction LTD
House Extension
This is Simicus Construction Ltd, we are a team of builders with over 20 years of experience in the Construction Industry.
AMS JOINERY SERVICES are a thriving business based in Glasgow & West Lothian covering central Scotland for over 20 years.We work hard to achieve client satisfaction 100%
Andy is a joiner and he built my TV stand, he was so nice and made me feel comfortable chatting away while doing his job and my TV stand was up in a bout 15/20 mins he even put my TV onto my new stand and I am hoping he has time to get time to build my daughters flat pack dining table and 4 chairs, a nice TV stand for living room and a small set of drawers for her daughter's bedroom also his prices are very reasonable all in great Job Andy.
25 years experience as a builder and over 15 years running my own business I specialise in property renovation, loft conversion, bathrooms and kitchens fitting Cooperating with and architect, fully qualified electrician and Gas Safety plumber All job insured
Andrew and his team did a great job with our refurb. His quote was very competitive and he was easy to communicate with. Very happy with the finish. Would definitely recommend him and use his team again for any other work in the future.
GRD Design & Build Ltd is a reputable and dedicated home improvement company based in Southall, with five years of proven excellence in the industry. Our experienced team of four skilled professionals specializes in a variety of services, ensuring that every project is executed to the highest standards of quality and craftsmanship. Our Services: Painting and Wallpapering: Loft Conversion Flooring Roofing Plumbing Carpet& Lino Why Choose Us: Experienced Team: With five years of experience and a dedicated team of four professionals, we bring a wealth of knowledge and expertise to every project. Quality Craftsmanship Customer Satisfaction GRD DESIGN & build ltd , we believe in turning your vision into reality, enhancing your living spaces with professional and reliable services. Contact us today to discuss your next project and discover how
Mandir from final touch was amazing. I highly recommend him and final touch. I called final touch for an urgent job and they came the following day. No complaints and very reasonable price. I had to lay carpet on stairs, passage and two other rooms with carpet which did not fit exactly plus a combination of old and new carpet. Manvir was able to do it no problem and made it look easy. Get in touch with Manvir for any jobs. Will definitely be using them again
Welcome to Levelin Group – your trusted experts in bathroom and kitchen design, supply, and installation, with over 15 years of experience. We specialize in complete bathroom renovations, bespoke kitchen installations, and tailored 3D CAD designs to bring your vision to life. Our comprehensive services include bathroom fittings, custom kitchen cabinetry, plumbing, tiling, and flooring– all completed to the highest standards. Whether you’re planning a luxury bathroom transformation or a stylish, functional kitchen upgrade, we’re here to deliver precision, quality, and care. Contact us today for a free, no-obligation quote – let us transform your space into something extraordinary!
I did not hire this company. They came to assess the job and promised to send me an estimate by email. However, despite several messages to them from myself, they never had the courtesy to respond or send me a job estimate. I would have zero confidence in this company, and obviously their customer relations needs improvement. Consequently, I am still seeking a tradesman to do the job.
Dorset Extensions Group Ltd
House Extension
Transforming homes in Dorset WE DO IT ALL JUST CALL ! We are your one stop construction and electrical company whether your a home owner or a business we cater to all your building and electrical needs. Trust Dorset Extensions to bring your home and electrical improvements to life.
Eagle eye building LTD in an established, family run business with a wealth of knowledge & experience. Taking pride & care of all of your building needs. We cover all aspects of building and no job is too big or small. For more information, or a free quote, please feel free to get in touch with us.
Great customer care and excellent standard of work. Delighted, thanks
Full property maintenance Handy man no job to big Painter & decorator Kitchen fitting r Bathroom fitting Tiles fitted Full house refurb HMO conversion
Absolutely 1st class response by Harj & his team to some very challenging works. Cannot recommend highly enough for any domestic or commercial projects. Good value, reliable, always polite & goes the extra mile to deliver the highest quality.
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!
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