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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 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!
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
Incomplete works , shoddy finishing , plaster cracking already , doors falling off , faulty plumbing causing leak leading to more repairs / money . No point in phoning . I’ll sort it myself .
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Excellent, efficient job and area was left incredibly clean and tidy at the end. Very good communication throughout the quoting and arranging process. Highly recommended.
Hello, and welcome to Home Fixology – your friendly neighbourhood home improvement experts! At Home Fixology, we don’t just fix homes; we build trust through a personal touch that turns every project into a unique journey. If you want to see our growing portfolio of reviews, you can check us out on UK TRUSTPILOT: Home Fixology We're on FACEBOOK too: homefixologyltd Services we provide: Roof restorations: Repairing and refurbishing roofs to improve their structural integrity and appearance. #ProPERLA #Renotec Wall coatings: Applying coatings or finishes to exterior walls to protect them from weather damage and enhance their aesthetics. #ProPERLA Driveway restorations: Repairing and refurbishing driveways to improve their appearance and durability. #Resiblock Flat roof services: Repairing or replacing flat roofs to prevent leaks and water damage. #FirestoneRubberRoof Render repairs: Fixing and maintaining render on exterior walls for structural integrity and aesthetic purposes. Loft insulation: Installing insulation in lofts or attics to improve energy efficiency and reduce heating costs. #SuperFOIL Damp proofing: Treating and preventing dampness and moisture issues in buildings to protect against structural damage and mould growth.
G Greaves carpentry and building services of the complete package from new builds to residential cleaning,we cater for all our clients needs across London and Essex. Carpentry specialists. 17 years experience Fully qualified and certified operatives. All building and maintenance works undertaken. Fully insured. Guaranteed work.
After an initial very swift reply and quote that was hundreds of pounds less than others there was an initial visit followed by weeks of no contact. After chasing there was another visit and then 3 months of no replying to messages. Suspect he quoted too low but a massive waste of time.
Welcome to First Fix Decor & Boiler Experts, the trusted name for domestic and commercial property solutions. With over 25 years of experience, we pride ourselves on delivering professional, reliable, and high-quality services tailored to meet your every need. From plumbing and heating to painting and decorating, and even man with a van removals and waste clearance, we are your one-stop solution for maintaining, improving, and transforming your property. At First Fix, we specialize in domestic and commercial plumbing and heating, offering services like boiler installations, boiler repairs, central heating installations, and general plumbing maintenance. Whether it’s fixing a dripping tap, upgrading your heating system, or conducting safety checks, our team ensures your property stays warm, safe, and functional. Our painting and decorating services are designed to rejuvenate your space with precision and creativity. From interior wall painting to exterior building renovations, we help bring your vision to life. Every project is carried out to the highest standards, ensuring an impeccable finish that enhances the look and feel of your home or business. We are also experts in track and trace water and gas leaks, using cutting-edge technology to detect and resolve leaks efficiently, saving you time, stress, and potential damage costs. This specialist service is critical for maintaining the safety and integrity of your property. Beyond repairs and renovations, we offer dependable man with a van removals for both domestic and commercial clients. Whether you’re relocating, need furniture transported, or require same-day courier services, we handle your belongings with care and professionalism. Additionally, our waste clearance services help you dispose of unwanted items responsibly, keeping your property clutter-free and environmentally compliant. First Fix Decor & Boiler Experts operates a 24/7 emergency call-out service, so you’re never alone in a crisis. From plumbing emergencies to urgent heating repairs, we’re here to ensure your home or business stays comfortable and operational at all times. We take great pride in our reputation for excellence, built on years of consistent, reliable service. As a fully insured and accredited company, we adhere to strict safety and quality standards, giving you peace of mind that every project is in capable hands.
Very professional, and undercut several other operators
Keep it Klean offer a wide range of internal and external cleaning. We also cover a wide range of general building and maintenance: Driveway/patios, Roofing, Fencing, tree felling and clearances. We are a professional, reliable and honest company.
Swift and helpful
USE US ONCE,,,,,TRUST US ALLWAYS !
Very friendly and helpful service. Fairly priced quote so good value for money. Will be contacting them again if I need further work in the future. Thank you for your help
Welcome to HOME IMPROVEMENT PROJECTS & SERVICES (HIPS HOMES) Ltd, where excellence meets integrity. We offer a wide range of construction services, ensuring quality and efficiency in every project. Discover our outstanding reviews and let us help you make hips of SAVINGS on your budget, add VALUE to your property, and enhance your own and or your tenant's COMFORT. #HipsHomes #HomeImprovement #TrustedBuilders #QualityCraftsmanship
Ernest is a very hardworking tradesman. He replaced locks for us.
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.
Tailored carpentry is a established carpentry and joinery firm who covers all aspects of works from loft conversions to bespoke wadrobes. We insure to give you the best options to suit your demand , with a competetive price.
Great flooring and plastering.
Smart Choice Roof
House Extension
SMART CHOICE ROOFING SERVICES Established over 3 years ago, we provide expert roofing services to commercial and domestic clients across Surrey, Hampshire and West Sussex. A wide variety of services can be carried out to fulfil all your roofing requirements, from new builds to re-roofs, roof repairs and more! Why hire us? 1. All our work meets strict quality and safety standards. 2. Our workforce is subject to continuous training and the company health and safety policy is regularly monitored and updated. 3. We offer emergency call out. 4. We undertake insurance work.
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!
RSP A1 CONSTRUCTION LIMITED
House Extension
Hi I'm Lovejeet Singh (Lucky), the managing director of RSP A1 CONSTRUCTION I now have 17 years of experience in this trade. We provide a full building service. Loft conversion, Extension, Full Refurbishment and many more. We are a team with intelligent, physically strong, hardworking, and professional tradesmen who give 100% all the time. We are always on time at work and finish within time scale. WE WILL ACHIEVE YOUR VISION and most importantly NO SHORT CUTS
We provide a superior Handyman service -Painting and decorating -Laminate flooring -Doors installation -Changing door handles and locks -Patching and painting. -Exterior Upgrades. -Pluming -Bathroom installation
Marco responded straight away to my advertised job, and was able to start immediately. Great communication throughout, arrived on time and had the emulsion job done within the day, as well as stripping wallpaper and patching up a little hole previously caused by a broken blind. Left flat clean and tidy, did an excellent job and really happy with the standard of work. Highly recommended.
Brickbuilds
House Extension
Welcome to Brick Builds! We are a well-established building company in the South West with over 17 years of experience in both traditional and contemporary building techniques. Brick Builds offers a comprehensive service from design to completion, working closely with our clients to provide solutions tailored to their needs. Rest assured, all our tradesmen are professional, courteous, and respectful of both property and clients at all times. We look forward to working with you on your project.
Over the years of being in the construction industry we pride ourselves in effectively carrying complete house renovations ,new kitchens and bathroom installations ,plastering, tilling, plumbing, painting and electrical works, consumer units,complete rewire, inspection and testing,and we Part P Registered under the NICEIC brand.
Sylvester arranged and managed the refitting of my kitchen - plastering, plumbing, cabinets, tiling. Even Replacing joists and floorboards (I had a wood worm problem). We could not be happier with the result and Sylvesters accommodating attitude towards much unexpected/unplanned work all carried out within quoted timeframe. Could not rate him higher! As an electrician he refitted a few of our lights and provided a valid certificate for all work done. Very professional and tidy.
Established since 2001, I have delivered a variety of building projects efficiently, economically and stress free to very high standard. My services include Space Planning, Design & Build, Site Management (ACIOB). Project Management, Renovations and Refurbishment of both domestic and commercial properties. I pride my self on my ability to deliver the required project to the specified quality within the agreed duration & budget with a courteous and friendly approach throughout.
Very good, fast efficient and clean, Definitely recommend, Thank you Khal very happy with my new unit.
R&D CONSTRUCTION IS A PROFESSIONAL DESIGN AND BUILDING COMPANY SPECIALISING IN ARCHITECTURAL DESIGN AND PROJECT MANAGEMENT FOR RESIDENTIAL AND COMMERCIAL PROPERTIES, ALSO A WIDE RANGE OF CONSTRUCTION, DEVELOPMENTS AND REFURBISHMENTS. We Carry out all type of construction and to us no job is a small job and by that we mean we would be happy to take your various jobs in our hands. We provide the following list of the building services: New Build Property Refurbishment Loft Conversion House Extensions Flat Conversion Driveway & Patio Bricklaying & Re-pointing Kitchen & Bathroom Roofing & Guttering Plastering & Tiling Carpentry & Joinery Painting & Decorating Plumbing & Electrical Central Heating & Under Floor Heating Design We believe a great design is simple and not only how it feels or looks but also how it works. We provide Architectural and Interior Design and Engineering Services: Initial Concept Design Basic Drawings for Planning Application & Application Management Existing & Proposed Floor Plans, Elevations and Sections Site Plans and Block Plans (OS map/ Location Plan) Detailed Architectural Design 3D Concept and Visualisation Design Interior Furnishing, Materials & Fabrics Lighting Design Bills of Quantities (BOQ) 3D Interior Visualisation Design 3D Interior Visualisation Design Building Control package Drawings & Application Management
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.
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