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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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DX Construction ltd is a building company based in sheffield south yorkshire with Experienced and qualified builders With over 11 years experience in the trade we pride ourselves on perfection & 5 STAR quality. We have the skills, knowledge and creativity to solve your site specific problems. References available. Please get in touch for a great reliable and professional service We cover following areas: - Sheffield - Rotherham - Doncaster - Chesterfield - and other surrounding areas SERVICES WE PROVIDE 1 Extension 2 Loft conversions 3 Refurbishments & full house renovation 4 Roofing 5 Chimney removal 6 Landscaping and garden work 7 Carpentry & joinery 8 Kitchen & bathroom fitting 9 Electrical & plumbing Please get in touch for a great reliable and professional service
Andrea and his team were excellent. He is very reliable, efficient and hard working. He made a very challenging job look easy and did some extra things for me that weren’t included in the quote, without charging extra. He got back to me quickly and the whole job took less than 2 weeks from me posting to completion. I would definitely recommend this company and I’m sure I will ask him to do other jobs for me.
KBL Construction Services LTD
House Extension
we have 10+ years of experience and provide high quality of workmanship in every aspect of building services from refurbishments to loft conversion and extension.we are professional team of skilled builders, tillers, bricklayer, carpenter, painter and provide services for plumbing and electric work.
TCL Building and Landscapes, friendly professional service.
Quick response and turn around
THE GCD GROUP LTD
House Extension
GCD Developments is a multi-disciplinary property practice, covering property development, project management, architecture and interior design across London and United Kingdom. Whilst every project is unique, the philosophy behind each is unwavering: at GCD we strive to craft environments which are not just beautiful, but faultlessly functional.
Our family has been mastering our trade for over 25 years, with two generations currently involved. We take pride in offering extensive knowledge and assistance to our clients, covering a wide range of areas when it comes to renovations and refurbishments. From the start of the project to its final completion, we offer help, guidance, advice, and assistance to create the perfect interior and exterior. Our services include comprehensive flooring solutions such as tiling, laminate installations, underfloor heating, and more. We also specialize in drywall/plasterboard installations, including unique shapes with hidden lights, cornices, and wallpapering. We are experts in every aspect of painting and decorating, and our true passion lies in creating bespoke, one-of-a-kind decorative plastering designs that offer limitless possibilities. From silky-smooth, polished, or shiny finishes to bold pearly effects, rough 3D-looking designs, and much more. We can even create custom-made paintings on almost any surface, including walls, ceilings, and mirrors. You can trust us to bring your vision to life with our exceptional craftsmanship and attention to detail.
AVOID! Mr Art 13 (father&son) ABANDONED our 7-room project. Started 2 beds and a wetroom that now needs redone. After 10 weeks and 50% of the quote PAID, no room was left usable. Gave constant excuses for delays: “prices doubled,” “faulty pipes,” etc. They told us they DON'T CUT CORNERS and explained how coving screws should be filled and sanded, yet they paint over screws, leaving drips on the walls, flooring laid on an uneven base they poured, tiling on a dirty dusty wall, using unfit materials, etc.
Martons Building Contractors
House Extension
Martons Building Contractors is a trusted name in construction, known for our problem-solving skills, attention to detail, and innovative designs. Our mission is simple: to exceed the expectations of every client we serve. We offer a range of services including conversions, extensions, groundworks, new builds, and roofing. With a combined experience of over 100 years, our team of 5-6 professionals ensures that every project is executed with precision. While our core team is small, we have a network of reliable subcontractors for electrical and plumbing work. Based in Leeds, North Yorkshire, and Lancaster, we are dedicated to serving these areas with quality construction services. Choose Martons Building Contractors for reliable craftsmanship and a commitment to excellence in every project. All contracting works available and covered in and around Yorkshire.
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
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over 10 years experience ALL TRADES
Was contacted by Tomasz on the same day I posted the job (Sunday) and he came out to see the job that day. It was for an elderly couple who required a bathroom refit. He understood that i wanted them to feel safe just as much as the quality of the job. He started a couple of days later and did an excellent quality job and the elderly couple felt all went well and worked around their needs. 100% would recommend Tomasz
GJH Joinery services Ltd is a trusted, family-run joinery business with over 30 years of experience in the trade. Based in Glasgow, we specialise in all aspects of joinery and bespoke woodwork, providing high-quality craftsmanship to both residential and commercial clients. Our expertise covers everything from custom kitchens, doors, windows, and staircases to fitted furniture, extensions, renovations, loft conversions and restorations. With decades of hands-on experience, we take pride in delivering precision workmanship, attention to detail, and reliable service on every project—no matter the size. At GJH Joinery Services Ltd, we combine traditional joinery skills with modern techniques to ensure the best results. Our long-standing reputation is built on quality, honesty, and customer satisfaction, earning us the trust of repeat clients and strong word-of-mouth referrals throughout the years. Whether you’re looking for a one-off bespoke piece or a full property renovation, you can rely on our experience and craftsmanship to bring your vision to life.
George was absolutely fantastic. Extremely efficient and professional. We have since had him back for other jobs. 5 stars from us.
Nestled in the heart of Ayrshire, Mauvel stands as a beacon of excellence in the construction industry, we dedicate ourselves to mastering the art of building and renovation work, covering the entire central belt of Scotland At Mauvel our services encompass a comprehensive range of construction and trade solutions tailored to meet the diverse needs of our clients from residential projects that turn houses into homes to commercial endeavours that breathe life into new businesses our skilled team bring dreams to reality with precision and passion Scott is our operations manager, a time served fully qualified joiner with over 25 years experience
I primarily work on all aspects of kitchen and bathroom fitting from fitting to services. However I have a long history of multi-trade work having completed high spec extensions throughout the years, no job is too small. I carry out property maintenance which involve carpentry plumbing and electrics as well as refurbishments all within the latest regulations.
Pleasant polite tidy, carried out work quickly and efficiently
H&R Renovations LTD
House Extension
H&R Renovations ltd always aims to deliver a high standards of work qualities to satisfy all my clients expectations and meet theirs satification.
Property Solutions LTD
House Extension
Property Solutions Ltd Every Roofing Solution At Property Solutions Ltd, we are dedicated to delivering superior roofing solutions. With our wealth of experience, we have become the go-to roofing company for both residential and commercial clients. Our team of skilled professionals takes pride in their craftsmanship, ensuring that every project is completed with precision and attention to detail. From minor repairs to complete roof installations, we use only the highest quality materials to guarantee long-lasting results. Customer satisfaction is at the heart of our business. We strive to provide excellent service, transparent communication, and fair pricing, building strong and trusting relationships with our clients. When you choose Property Solutions Ltd, you can rest assured that your property is in safe hands. Let us protect your investment with reliable and top-notch roofing solutions. Contact us today for all your roofing needs!
PDH Decorating Services
House Extension
I've been a fully apprenticeship trained decorator for 41 years and cover all aspects of decorating both internal and exsternal wallpapering, staining and varnishing finishing ,spraying effects ,marbling ,graining ,stenciling effects wall and floor tiling and all finishes to a high standard there a pictures of my work on my profile thankyou
With 30 years of experience in the building trade and a skilled team that includes bricklayers, ground workers, electricians, and carpenters, you have a solid foundation for tackling various construction projects. We specialise in new builds, extensions, loft conversions, and both internal and external building works showcases our versatility and capability. Whether the job is big or small, our team's expertise ensures that we can handle it effectively. We also cover all property maintenance for both domestic and commercial.
We are a family run buisness that originated in Lincolnshire. We have relocated to the Kent area and have a fantastic skilled team of builders, carpenters, electricians, landscapers and many more. We thrive on perfection, quality and value for money and will share our knowledge and expertise with you.
Thouroughly professional from agreeing the scope of the works from the outset, to clean up post completion. Ben and Lee were the stand out members of the team that renovated my garden, providing advice and suggestions along the way, that further enhanced the project. Highly recommended, stress free bulding company.
R Brazil Developments
House Extension
We are well established building company covering the gloucestershire area. All Building,Landscaping & driveways work undertaken. We offer a 5 year guarantee to all project & offer testimonials to all customers. We can also assist with design on any potential projects.
Hi, we are a group of 3 hard working people who are experienced in gardening and landscaping jobs for more than 5 working years.
I had front drive paving done, quick and easy install, cleaned after them great service
My business and team have over 20years experience in all masonry, we also do brick, block and porcelain. We work to the highest standard. Between us we cover all aspects of building work including restoration, new builds & landscaping. All work considered, free quotes with no obligation.
Ross did a great job laying the patio and installing a shed base. He immediately identified the differing levels my garden had and was able to suggest ideas to maintain relatively level access to my property. Ross arrived for the quotation as agreed and the work was started and finished promptly. He removed all the waste from the project and I'm really pleased with the outcome of the work.
Transforming spaces into stunning havens, Clean Lines Paving is your go-to partner for all things construction and landscaping in North East London, Enfield, and beyond. With a rich legacy spanning over 20 years, our craftsmanship speaks volumes, whether it's crafting bespoke patios, driveways, fencing, or foundations. But we're more than just surfaces; we're your trusted allies in home transformation. From seamless garage and kitchen conversions to elegant one-story extensions and inviting porches, we bring your vision to life with precision and flair. At Clean Lines Paving, we understand that every project is unique, just like every home. That's why we offer a diverse range of designs to perfectly complement your space, ensuring that every inch reflects your style and personality. When it comes to property maintenance and repairs, trust in our expertise to keep your investment in pristine condition for years to come.
Very pleasant, understanding and efficient. Quote as would be expected for the job. I’m very happy with this company.
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