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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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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
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Established in 1994 we offer a comprehensive building service for kitchens, bathrooms, alterations, extensions or new builds. I have over forty years experience in the industry and twenty five of those with UK national housebuilders. If you have a project we provide a free consultation and a fixed price quotation with a full specification attached. Our design and build service can take care of the complete project to provide you with a turn-key completion. Our tradesmen are all qualified and experienced and we are fully insured to include design liability.
Cannot fault the work carried out. The guys were very focused and kept mess to a minimum. Andrew kept checking in to see how it was going. We love our new mezzanine. Thanks again all.
Specialising in brickwork, Structural work, Extensions, Building renovations, Patios, Driveways, Stonework
Josh is brilliant! Turned up when he said he was going to and work is great. Would definitely recommend.
High Performance
House Extension
Hi here at high performance roofing and property maintenance we take great pride in making all our customer’s happy and reassured with our 22 years experience there’s no job to small from a small gutter clean to a full roof replacement and garden make over we pride ourselves in taking our utmost care and attention to the finishing details of every single project because here at high performance property maintenance your home becomes our concern and the quality of our workmanship comes as standard not as an extra
Jovan Sahota
House Extension
Top Tier Builders - Your Comprehensive Building Solution! Looking for a reliable and versatile building company that covers all trades? Look no further! Top Tier Builders is your go-to choice for all your building needs. With our years of experience and expertise, we offer a wide range of services, including plumbing, electrical work, carpentry, and more. At Top Tier Builders, we take pride in delivering top-notch craftsmanship and exceptional quality in every project we undertake. Whether it's a small repair or a complete building renovation, our team of skilled professionals is equipped to handle it all with precision and attention to detail. Why choose Top Tier Builders? Here's what sets us apart: 1. Comprehensive Services: We offer a one-stop solution for all your building needs. From plumbing and electrical work to carpentry and beyond, we have the expertise to handle every aspect of your project, saving you time and hassle. 2. Skilled Tradesmen: Our team consists of highly skilled and experienced tradesmen in various fields. With their expertise and professionalism, you can trust that your project will be completed to the highest standards. 3. Attention to Detail: We understand that every project is unique, and we pay close attention to every detail to ensure that your specific requirements are met. Our goal is to exceed your expectations and deliver results that you'll be proud of. 4. Reliable and Trustworthy: When you choose Top Tier Builders, you can have peace of mind knowing that you're working with a reliable and trustworthy team. We prioritize customer satisfaction and strive to provide a seamless and stress-free building experience. From start to finish, we are committed to delivering exceptional results that meet your vision and exceed your expectations. Contact Top Tier Builders today for a free consultation, and let us turn your building dreams into reality. Remember, when it comes to building projects of any scale, we're at the top of our game - Top Tier Builders!
We have been in business for over 20 years and pride ourselves in complete design and build, project management with good communication and an eye for customer satisfaction. We carry out works from New builds to lofts, extensions to refurbs with a specialist Bathroom operation which we carry out all year
Julian at Beauchief was both professional in his approach and diligent in his work. Communication was very good both talking through the job / options and during, with regular photos updating progress. I would have no hesitation in using him again.
With over 75 years of combined experience at OWD Group, we offer a cost effective and professional service to all of our customers. We specialize in the building and design of extensions, orangeries and conservatories and offer a FREE bespoke design service including CAD drawings. Whether you want a traditional 'brick and block' build or the innovative 'SIP panel' build, we can meet your exact requirements. All of our products are tested by independent agencies to conform to the highest industry standards, British Standards, Secured by Design and Building Regulations. All of our installation teams are fully accredited and we offer full Insurance Backed Guarantees for all work undertaken… offering greater protection and peace of mind to customers.
Quality of work was excellent
Regency construction is a family run business We have the knowledge and ability to carry out the majority of construction and maintenance work in house We have a good reputation and are both reliable and trustworthy Our company is fully insured and all work is guaranteed Our most recent completed and ongoing work includes Extension and loft conversion in Brighton Garage conversion in Peacehaven Replacement kitchen and bathroom in Brighton Ongoing programmed and reactive maintenance on various residential properties in the area
Great work and prices you won’t find any one better
LDN Construction
House Extension
Welcome to LDN Construction! Based in London, we specialise in transforming houses into homes, offering a wide range of construction and refurbishment services. With over 20 years of experience, we combine precision, innovation, and top-quality materials to bring your vision to life. We pride ourselves on our attention to detail and commitment to completing projects on time and within budget. Our Services Include: - Home Extensions (Rear and Side) - Loft Conversions - Roofing - Full Home Refurbishments - New Builds - Bathroom Renovations - Garden and Patio Projects - Driveways - Fencing - Cladding and Rendering - Plastering Every project is important to us, whether big or small. We offer a bespoke quality finish and are always by our customers' side, turning their houses into homes. Don't hesitate to contact us for a free visit and a free quote. We look forward to hearing from you soon!
DC LOFTS & CONSTRUCTION LTD
House Extension
DC Lofts & Construction Ltd is a London-based construction company specialising in loft conversions, roofing, structural work, renovations, and full property improvements. We deliver reliable, high-quality workmanship with attention to detail from start to finish. Our services include new roof construction, structural alterations, loft conversions, partition walls, flooring, plastering, painting, doors, skirting, fascia, guttering, and exterior finishes. We work closely with homeowners to complete projects safely, professionally, and on time. We pride ourselves on clean work, strong communication, and practical solutions that add value to every property. Whether it’s a full loft build or general construction work, we focus on durability, quality finishes, and customer satisfaction.
With over 25 years of experience in the construction and property improvement industry, I provide a comprehensive range of services including design, foundations, building work, insulation, damp-proofing, plumbing, central heating, electrical installations, plasterboarding, plastering, kitchen fitting, bathroom installation, flooring, roofing, painting, decorating, and project management. I take great pride in delivering high-quality workmanship and have built a strong reputation for reliability, professionalism, and outstanding customer service. Using premium materials, including high-performance Zinsser products, and professional-grade equipment, I ensure every project is completed to the highest standard with a durable, long-lasting finish. Whether it's a small repair or a large-scale renovation, every job receives the same attention to detail and commitment to quality. All painting and decorating work is finished to a hard-wearing standard and backed by a 3-year guarantee. When quality matters, choose experience you can trust. Get the best from the best.
Have used again for a lead flashing roof repair and fascia fixings. Excellent communication, work ethic, craftsmanship and price.
Hawk Building & Landscaping
House Extension
We have 7 years experience in the construction & landscaping trade. From single story extensions, to building walls, flagging & fencing are just some of the services we offer. We always strive to achieve the highest level of customer satisfaction.
From hanging a single door to full home renovation/new builds, we can cover every aspect of building and developments. Specialising in carpentry and joinery and with a wide range of contractors in the book, means every jobs done to highest of quality and craftsmanship.
TML show genuine interest in the job and provide great customer service alongside trade knowledge and skills. I would not hesitate to call upon TML in the future.
All exterior works undertaken no job to big or small with over 20 years experience professional workmanship is our key making costomer’s happy is our goal. Find us on Facebook goggle my builder bark checkatrade rated people and much more fully Insured
Very satisfied with the work. Would recommend .
We offer a extremely professional and reliable service, covering all aspects of building works. With housing prices through the roof many people are deciding to extend and improve their current homes, why not give us a call today to see how we can help.
Kris & his team have been an absolute pleasure to work with on our kitchen extension project over the last few months. They have been professional and friendly, with a great attention to detail. Kris approached the project and all of the challenges that we had with a great positivity and can-do attitude. We are absolutely delighted with the finished result and couldn’t have asked for a better team to help us get here. I wouldn’t hesitate recommend Kris and his team for future projects.
Our team consists of skilled engineers and all our projects are covered by Liability insurance, So you will have complete peace of mind and reassurance. We are more than welcome to meet you and provide our professional advice. For more information please visit our website: blockopsgroup.couk
Blockops teams created and knocked through my kitchen wall into my living space adding an extension, and creating a downstairs bathroom. They did an amazing job. They were really transparent on cost, the standard of work was excellent. They’re flexible, accommodating and always find a solutions. Added this they finished on time. I would fully recommend them, and will use them again.
WoodBuilt Developments
House Extension
Woodbuilt Developments is a local, friendly, and professional construction and renovation specialist based in South Yorkshire. With over 20 years of trade experience, we have evolved from a specialist joinery firm into a full-service development team, delivering high-standard craftsmanship at a fair price. EXPERTISE YOU CAN TRUST We understand that your home or business is your most valuable asset so taking on a building project can be daunting and finding a team that balances skill with reliability can be the hardest part. At Woodbuilt, we remove that stress. Our well-equipped team consists of skilled tradesmen from master joiners to site managers who work in harmony to get your project completed with zero fuss. OUR SERVICES Whether you are looking to add space or increase property value or even wanting to build from the ground up. Woodbuilt covers every aspect of modern construction: New Builds & Extensions: Creating bespoke living spaces tailored to your lifestyle. Loft & Garage Conversions: Transforming underutilised areas into functional rooms. Full Property Renovations: Breathing new life into domestic and commercial buildings. Kitchen Upgrades: We are proud to partner with Yorkshire Kitchen Co, combining their stunning high-end designs with our precision installation services. WHY CHOOSE WOODBUILT? From minor renovations to major structural developments, no job is too big or too small. Our extensive knowledge of the Yorkshire property landscape, combined with two decades of hands-on experience, means your project is in the safest hands in the region. We pride ourselves on being approachable, tidy, and transparent. We don’t just build structures; we build relationships based on trust and quality.
we are happy to carry out gas and heating work , and accept bathrooms and kitchen fitting from A2Z. We are ready to deal with jobs and promise with high standard work ( AND WE DO ) . Happy to hear from you. Thanks.
Excellent job today in our bathroom - done with great speed, quality and efficiency, and real expertise.
Inside Quality Construction
House Extension
hello,my name's Gigi,I have more than 15 years of experience in the field of construction. I am hire with my team to renovate and fix your home: Full Bathroom Electricity Full Bedrooms Plumbing Full Kitchen. Cleaning We put passion into our work and we want to make your home beautiful!
Part of the Centiam Home Improvement group, we are a growing company. All jobs are undertaken in a way which makes our customers needs our number one priority. All our products are hand picked to offer quality and value for money.
Did a great job replacing the windows for my flat, was happy with the process of agreeing exactly what was specified for the job and that's what was delivered. Job was taken care of in good time and for a fair price.
We are a limited business local to blackpool, friendly, trustworthy and reliable in the trade. We offer a range of services available to the end user ie. Roofing/flat roof/ re-roof. We have 40 years experience so feel free to have a look at the reviews on our page and ask any questions. Yours faithfully Mark
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