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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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Welcome to Rothwell Contracts & Rothwell Kitchens Ltd Nottinghamshire based family run businesses
Whoops, sorry, about the last comment about rcl builders, that comment was to another builder.
I am a local tradesman with 25 years of experience in the building and plastering industry. I have a great, reliable team behind me who are not only friendly and professional but will also finish every job to the highest standard possible.
Really happy with the work carried out. Any issues I raised were dealt with and any snagging I needed addressing were resolved. Would recommend Luke and his company and use him again.
Experienced Builder with over 20 Years experience based at Preston, but also covers the areas of Blackpool, Lancaster, Morecambe, Kendal and The Lake District. We specialise in House Extensions and Garage / Loft Conversions. Full Kitchen & Bathroom design supply and fit service, including tiling and flooring. Full Garden design and landscaping, driveways and patios. No job is too big for us. Ourselves and all our tradesman are fully qualified and insured. If you would like an informal chat about your project, then feel free to contact us.
This rating is for the refurbishment of downstairs cloakroom, ensuite and main bathrooms. This included replacing bathroom suites, new ceilings with light and ventilation fans, full tiling and laminate floors. Probably not the cheapest but the work was completed to a high standard and all tradesmen were pleasant and understood our requirements.
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25 combined years of experience within the construction industry. We provide a clean, neat and reliable service. We strive to do our best for each and every one of our clients no matter how big or small the job may be. We take on all aspects of masonry work. Garden walls, extentions, chimney stack removals, patios, repointing, traditional brickwork, lime mortar putty… you name it we do it!
Fantastic work. Andy is very professional and knowledgeable. Prompt, friendly and very competitive prices. We are building a 2 storey side extension and Andy is doing all the building works. We have a very difficult set of footings which involves a line of trees close by. Foundations passed by Building Control with flying colours. Very satisfied and Andy will be quoting for other work I have planned and I am sure we will be working together for sometime now. Would recommend him to anyone.
Neil Chamberlain Neil has over 30 years of experience in the construction industry, where he has gained a comprehensive level of knowledge and a thorough and in-depth understanding of most trades and skills. Neil commenced his career in construction as a sub-contractor building loft conversions, primarily in West London, and was awarded by The Federation of Master Builders for an exceptional conversion in Wimbledon. Neils recognised high standard of work has secured many diverse construction projects, including the substantial renovation of Period Houses, including listed buildings, single and double storey extensions, detached new build projects, an award winning Chelsea landscaping and garden design, as well as commercial buildings. Neil has worked as part of a team, as a main contractor and has also project managed all elements required in completing building projects large and small successfully. Property Service, (NPS) is a family owned and run business, bringing an extensive level of ability to benefit our clients projects. Whether you require property maintenance or are planning something more substantial our team will assess your requirements and put in place a tailored package for you, from an appropriately detailed quotation on smaller projects, to an all encompassing design and build service, including - planning, building control and a detailed costed schedule of works, we have the experience and background to meet your requirements.
All Plumbing work undertaken. Cistern repairs Tap replacement Radiators Bathrooms Burst pipes Blocked drains etc.
Advanced construction is a small company based in Iver Buckinghamshire. We have been trading since 1992. We specialise in all types of building works. New build houses/ Extensions/Conversions/Refurbishment We all specialise in all sorts of landscaping ie patios-driveways We have our own plant .mini digger’s and dumpers etc. We quite often dig foundation and driveways for people, even if they want to carry on and finish their selves. Same goes for extensions We do all ground works, build shell and put roofs on, then client may want to take over at that stage. We are pretty flexible. We have lots of jobs all over which can be seen in person. At least by this you can see the quality of finish And even meet the previous clients. Our website is Advanced Construction Iver Ltd
Extremely happy with the work carried out. Very professional, thoughtful and tidy team. Would highly recommend.
We are two brothers, that have been in the trade for 10 years both qualified joiners, who undertake all aspects of internal and external bespoke joinery and construction.
Fantastic job , really pleased with the work. Turned up on time , cleaned up . Would definitely recommend and will use them again for any future work
We are general builders and groundwork contractors going the extra mile ,we have many satisfied customers more info can be supplied on request , check out my website all work has been completed by.uS. To a very high standard
MWE Builders removed our old garage, re built a new larger block construction garage, and we are very pleased with all of the work completed. Throughout the build we were kept informed of every stage, Matt was on site every day, even through some horrible wet weather. I would highly recommend MWE Builders, for price, quality, and friendliness. Thank you Matt, we appreciate all of the work you have done. Many Thanks Will and Wendy Kingswood Bristol
Five Star Construction is a family run business with the aim to provide affordable handyman and development works. We are full insured and all our operatives are fully trained for the work we carry out. Our friendly team are awaiting your call
Good value Very profession Quick and tidy workman Would definitely use them again. Regards Thomas
Small family run building company with over 40 years experience over 2 generations as a premium general building company. All types of building work carried out to the highest standard. A one stop shop for all your building needs right from the design and planning stage to completion. Joinery, roofing specialising in flat roofs Building and Plastering A wealth of experience in remodelling and renovations, extensions and sunrooms. Landscaping and paving. All areas covered. Fully insured, trained and certified tradesmen
WBuild is a family run business with over 10 years experience within the construction industry! We pride ourselves on providing clients with high standards and overall great experience.
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.
AD Property Maintenance Services Ltd is a modern, client-focused property maintenance company based in Central London. We specialise in high-quality handyman work, painting and decorating, deep cleaning, Venetian plaster and microcement finishes, removals, and general refurbishment services. What sets us apart? We're reliable, responsive, and transparent. Our team of trusted professionals and subcontractors deliver work with precision, care, and pride — whether it’s a small repair or a full property refresh. We don’t charge VAT, offer competitive pricing, and work weekends to fit your schedule. Backed by strong reviews and partnerships with estate agencies and commercial clients, we’re here to raise the standard — one job at a time.
The loft converstion the guys did was brilliant. We are very happy with the outcome but more than that we were happy with the communication and the flexibility to work around our requirements. Nothing was too difficult the workers were always polite and clean. Couldn't recommend more.
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.
Next Level bricklaying services with an exceptional level of quality workmanship and service.
I am delighted with the quality of Lefter's work. The job was a demanding one, and he responded to all the challenges. He is a perfectionist who works very hard. He is very easy to talk to and happy to explain how things are developing. I would recommend him highly.
Experience in: Tiling Plastering Painting Laminating Bathrooms Roofing Block paving Brick work Garage conversion Extension Mould Treatment END MORE
I was badly disappointed with the work, discussed this with Petru, sent him photos, he was still adamant he had done excellent work. I had to engage another contractor, who I had to pay not only to do the work, but to undo the poor outcome of Petru's work. I hired Petru based on his excellent feedback, and considered asking him to do more work in my home; I regret that decision, and will not hire contractors via websites like this any time again.
I’ve been in the building trade since 1994, worked primarily in Scotland but have worked all over the globe. Building house and complex’s from foundations to completion!! I offer full range of services
Andy was great to deal with and from quote to work being completed it was less than 48 hours. High standard of work from Andy
Here is a description about my company testing 2 updating just testing
Test without the bad word
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