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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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Small company producing good quality work at reasonable rates
Colin is an honest reliable conscientious worker.stuck to his quote and no hidden costs.he installed my new kitchen and made a wonderrful job.His work is outstanding and l would recommend him 100%.We are so chuft we went on rated people.Will get him again.Thank you Colin.
J L Plastering & Maintenance
House Extension
Hi Our friendly experienced team provides a complete service. We can take care of your whole project large or small including new boilers, kitchens, bathrooms, gas, plumbing and all central heating works. We Look Forward To Hearing From You! Best Wishes JDL team.
Blades building services is a reliable construction specialist with a great reputation for the high level of Quality Building and Property Maintenance Services we offer to all clients. We are also renowned for our ability to adapt to the needs of each customer even if work has already commenced. Our skills and expertise has been gained over the 30 years we have been involved in the building trade and the study of building.Our services extend to all aspects of construction and building.
Definitely would recommend.. New Windows, door and fixed a hole in my roof. Very reliable
UTB CONSTRUCTION was established in 2013 and is general contractor offering construction services in terms of full and part renovations houses, extensions, lofts conversion , first fix Carpentry, second fix Carpentry , bathroom fittings, kitchens fittings new built houses and summer homes,Drylining , plastering & Rendering, Decorating, specialist with driveways resin bond, polished concrete, paterne imprinted concrete,tarmac, and block paving.
Dimitrios did an excellent job working rapidly and efficiently and very willing to do extra work to achieve perfection
Our company is experienced in all aspects of plumbing and heating with all trades covered for bathroom installation. We have a friendly team that work together to make your job the way you want it.
Hi there, Here at Dura Construction we will tackle any job that is building related and I’ll do it with a smile. No job is to big or to small. All the work I do is treated like it is ours so it will be made with care and will last for all the years to come. We will do our best to give you a professional experience and I can ensure that we will impress you with the work We do. If there are any questions, please do not hesitate to call and ask. Many thanks!
Jack was really kind and polite and I am very happy with a job well done. I would certainly know where to go in future should I need more work done His rates were extremely competitive as I had received another quote of more than twice that he charged me. I thoroughly recommend him.
Welcome to HXL Construction Ltd - Where Your Vision Meets Our Expertise At HXL Construction Ltd, we warmly invite you to embark on a journey of transforming ideas into reality. Based in London, we proudly serve the local community and surrounding areas with over 20 years of combined experience in the construction industry. Whether you’re building your dream home, expanding your living space, or revitalizing your property, we’re here to make it happen. We believe in putting you at the heart of everything we do. Our approachable and dedicated team ensures that every client experiences a seamless, personalized service. From your first consultation to project completion, you’ll work with real people who genuinely care about your satisfaction and success. Our Expertise: New Builds: Creating stunning, high-quality homes from the ground up. Extensions: Expanding spaces to meet your growing needs and dreams. Internal and External Refurbishments: Breathing new life into your property, inside and out. Hard Landscaping: Crafting beautiful, functional outdoor spaces that stand the test of time. Our Core Values – Reflected in Every Project: Creativity and Innovation We embrace forward-thinking solutions to deliver unique, tailored designs that inspire and delight. From modern trends to timeless craftsmanship, our team thrives on turning challenges into opportunities. Integrity and Honesty Trust is the foundation of every relationship we build. Our open communication, transparent processes, and unwavering commitment to doing what’s right ensure peace of mind throughout your project. Excellence in Service Exceptional results start with exceptional care. From meticulous planning to flawless execution, we strive for perfection in every detail. Your happiness is our ultimate measure of success. Why Choose Us? At HXL Construction Ltd, we believe construction is more than just building structures – it’s about creating spaces that improve lives. We go above and beyond to exceed expectations, prioritizing respect, trust, and collaboration. Our local roots keep us grounded, while our regional growth ensures we’re always investing in cutting-edge expertise and resources for you. Let’s Build Something Extraordinary Together Whether it’s your first project or a grand venture, we’re ready to partner with you to bring your vision to life. Let HXL Construction Ltd show you how passion, skill, and care can make your dream project a reality. Reach out today, let's start building!
A few minor teething problems which were sorted immediately. Eddie is an extremely knowledgeable and talented gentleman with a great eye for detail and creativity. We discussed what needed doing and he set about the task thoroughly. He offered advice and was happy to answer questions. His team worked very hard to give me a garden that I thoroughly have the pleasure of enjoying. A great service which I shall use again. Thank you Eddie and team.
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We are a friendly and efficient carpentry team who strive to offer customers the best service at an affordable price. Experienced in all aspects of carpentry and gardens. You will not be dissapointed with CKB
No rating Did not turn up as arranged. Unreliable.
BHS Developments
House Extension
BHS Developments are a master building company with an enviable reputation specialising in residential refurbishment and renovation. Our passion for excellence within the construction industry, and our rigorously high standards, has gained BHS an enviable reputation for delivering results of the highest quality, on time and within budget. A business established itself through a family run love of property ranging from architectural design right through to finished concept. With a core experience of over 40 years designing and refurbing property to a high standard.
Qaisar Construction
House Extension
Qaisar construction deals in every aspect of building works, serving in this field since 2004. Qaisar construction specialise in Loft conversion, Extension, Whole house renovation, brick works, driveways etc. Qaisar construction has a team of 9 skilled workers. Our site can be visited for costumer satisfaction purpose. Qaisar construction believe in quality work than quantity. Best Regards.
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.
Integrity and hard work are the essence of this small company.
Ben is a highly competent and reliable builder. He completed our kitchen/garage conversion and bathroom work efficiently and to a great standard. Ours was a complex job with many different components all of which Ben tackled with no complaints, routinely offering practical solutions to any issues that arose which enabled us to retain our look and feel while keeping to budget. With us for nearly 7 weeks, Ben was very friendly at all times and we felt totally happy leaving him alone with keys to the house.
Alexandru Sofronia
House Extension
we specialise in all aspects of roofing from complete roof re-fits to repair and maintenance. Make the 'right choice' and contact us today for a free no obligation quotation.
Hi we are a two band company me and my son plus contractor when we need them we do all aspects of the building game as specified in are categories from bricklaying to decorating we aim to keep all are customers happy from start to finish thanks
Excellent communication and standard of work. Would definitely hire again.
Hi, I have 35 years of experience as a joiner & in the building game, and have run my own company for 25 years doing many jobs around the North-East.
Highly satisfied with Steve's work. Very professional and punctual and also extremely pleasant. I would highly recommend him to anyone who wants a high class job - 12/10 for going the extra mile.
MTD Building Contractors are a professional family run business with a wealth of experience operating within the building and construction industry throughout the Midlands.
Very good site
General Building
We found Altin very helpful, we really took on board his invaluable advice and knowledge. His work is to a very high standard, every place was left clean and tidy. I would highly recommend Alex Construction ltd and will certainly use this company in the future
Goldsmith's building services for reliable tradesmen , professionalism and quality workmanship.
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