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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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BLG Construction guarantees precise, timely and efficient work to the highest standards. With the backbone of experience we have in the trade we cover a wide range of work. •Patios (natural stone & Porcelain) •Brickwork (Retaining walls, steps, curved walls, detailed brickwork) •Driveways and paths (Block paved, resin and tarmac) Hard and soft Landscaping. (Artificial turf, Turfing, sleepers, pergolas and much more) Find us on Facebook and Instagram too see photos and start to finish videos of our projects we undertake @BLGConstruction. We offer free quotes and also finance options for those who may find it easier to spread the costs.
Would highly recommend this company, work carried out in four days as promised and within budget. Will, always got back to me right away if l had any questions during the planning process. Out of all the quotations we received He was the only one that provided a detailed listing of everything to complete the job.
Fabricating,Welding,Install:Security Grill Gates,Railing,Automatic gate,Staircase's,Collapsible,Window,Balustrade,Structural STEEL,Beems,Alloy Wheels,Exhaustes,lowering,welding:ARC,MIG,TIG,GAS,STAIN LEES STEEL,LED:Basic Plumbing+Painting+Powder Coting,Galvanise+...
Hired Amir to retrofit a Locinox soft closer on my gate, which turned out really well. The job was complicated but Amir took his time to understand what I wanted and finished the job to my satisfaction, thank you.
Based in Soham, with over 15 years experience in all aspects of plastering, tilling and small building works. With a clean and methodical approach to tasks.
Stuart was excellent - rendered and skimmed over exposed internal brickwork to create beautiful finish new wall. Turned up when he said he would, supplied the materials and did a very good job.
AT V.T.BUILDERS WE ARE A FRIENDLY, RELIABLE AND TRUST WORTHY TEAM. WE COMPLETE ALL OF OUR JOBS TO 100% SATISFACTION. NO JOB IS TO BIG OR SMALL SO PLEASE DONT HESITATE TO CALL. ALL QUOTES ARE FREE.
If I could give more stars I would.Viktor came out to look at job and from just meeting him I knew we would have him to do our work.He is polite and friendly.Not the cheapest but also not the most expensive either.They tiled my hall and kitchen walls.The work him and his team did was amazing.They work very hard and get it done quickly.We are so pleased with his work we are getting him back to do our shower room.I would recommend V t Builders to anyone.Thank you again Viktor.
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.
Adapt Home Improvements
House Extension
Adapt Home Improvements. With over 35 years of experience in the building industry, Adapt Home Improvements offers a comprehensive range of construction and renovation services. Our skilled team is certified in Gas Safe plumbing and trained across carpentry and roofing disciplines, ensuring every project is handled with expert care. We specialise in a variety of home improvement solutions including extensions, kitchens, bathrooms, roofing, and full refurbishments. Whether you’re looking to modernise, expand, or completely transform your space, we deliver high-quality workmanship from start to finish. Friendly, reliable, and hardworking, we pride ourselves on delivering exceptional results and a smooth customer experience on every project.
E SAINT GEORGE Ltd is a London & Essex based construction company. We specialise in all aspects of Home Improvements and strive to provide excellent work in order to achieve each individual clients vision. Our Customer Focused Service, ensures that we Communicate-Resolve-Produce superb tailor made projects. E SAINT GEORGE Ltd has an outstanding track record for delivering projects on Time and on Budget. All of our surveys are thoroughly analysed and concisely priced. Our pledge is to deliver all clients with Flat-Rate Costs for all of our contracted services. At E SAINT GEORGE Ltd, we value our highly-skilled team members as the core ingredient to completing every project successfully. HOME IMPROVEMENT SERVICES: - Kitchen Installations - Bathroom Renovations - Flooring (Laminate/Wood) - Tiling - Painting & Decorating - Structural Engineering & Design Services BUILDING WORK SERVICES: - Loft & Basement Conversions - Extensions (Single/Double) - Rendering / Plastering - Patio & Driveway Installations - Gardening & Landscaping - Gas Safe Services - Electrical Services (NICEIC) - Handy Man Services
Endrit and his team were wonderful to work with - friendly and professional and nothing was too much trouble for them, despite me changing aspects of the kitchen renovation and install during the process. They went above and beyond to ensure that everything was perfect and that I was happy with all aspects. My new kitchen looks amazing and I can't recommend Endrit and his team highly enough - I have already recommended E Saint George to friends and will be getting them back to install my bathroom.
ES Building Services is a family run business with a team of highly skilled, well experienced and passionate professionals who puts your needs at the forefront of what we do. All our work is completed to the highest industry standards and compliance with current regulations is always met. We focus on providing a high end finish on all of our projects regardless of budget. We will make sure you are involved and understood at every step of the process, from design to completion. Whether it’s a simple maintenance job or a full internal refurbishment, we aim to provide a level of service that exceeds your expectations. Our predominant active contacts consist of bathroom and kitchen refurbishment work. We work alongside multiple industry leaders and have an excellent track record in providing high quality installations across London. With a skilled and mature team of professionals we have an abundance of experience in all areas of building services. We specialise in full internal refurbishments covering all aspects of the build: strip out, plastering, kitchens, bathrooms, plumbing, electrics and everything in between. With over 300+ 5* reviews accross all platforms, rest assured your property is in safe hands with ES Building Services. Kitchens Bathrooms Refurbishments Electrical installation + Everything in between NICEIC Aproved Contractor. GasSafe Registered Engineers. SafeContractor Approved.
We hired ES Electrical to fit our new Kitchen and also added a toilet and shower unit downstairs. From the begening we found Harry and his Team to be very professional but also had have a very friendly approach. They listerned to our concearns during the process of the instillation and also gave us some good advice and ideas. We found them to be very tidy with their work and respected our property. Overhall we are very happy with the outcome of our new Kitchen and Bathroom,hence we have giving this rating.
Hi, I am Stefan, and I have three decades of experience as joiner, specialising in wood flooring and tiling, doors, wardrobes, decking, bathroom fitting and refurbishment.
Carpenter by preference but do most general building work with over 30 years experience from fitting a door to complete new build. I always leave the site clean and tidy. I take every job seriously as I know how important even the smallest job can be.
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We are a small team of 12 covering all trades. We have been running for 7 years and slowly getting bigger. We are interested in giving free advise and a free quote to any project large or small. Fully Insured and Qualified team for all aspects. building projects Lenny
LITA CONTRACTORS LTD We are a family owned construction company with over 10 years of successful commercial and residential building projects. Based in London, we help clients with all kinds of construction needs, with existing plans or brand-new designs and solutions. Some of our services include: - Ground work - Drainage - Basements - First Fix & Second Fix - Kitchen & Bathroom Fit Out - RC Frame & Steel Frame We are specialised in delivering reliable and best quality services that will last a generation.
At O.B.Build we want to make your home look amazing inside or outside.We take pride in our work and can handle any job or task.We are clean tidy, polite and always deliver a quality finish.
Brilliant refurb of 2 bedroom flat, timelines were tight but John delivered to great standards on time! Job included damp control, relaying floors, and painting/redecorating. Would highly recommend. Thank you John!
If only all tradesmen were like Norman and his team. He turned up when he said he would and kept me in the loop with what he was planning to do and what his team were doing. His team is made up of friendly guys and they've done a great job!
At Cymraeg Construction, building work has been at the heart of our family for generations with skills, knowledge and training passed on from one to another, even in the day to day running of the business we can call upon over 40 years experience from my father who is an integral part of the company and has made us what we are today with a passion for quality that shines through on every job we undertake. Covering all of South Wales, you can be sure to rely on us to undertake any project you may have from conception to completion, we can take care of all aspects of the build including planning and skilled tradesmen in all trades, let us deal with all the complications and timings as we project manage the process to ensure everything is done correctly and to schedule all while keeping you informed every step of the way. Please feel free to contact us for a free no obligation estimate on any work you may have. Cymraeg Construction.
Gareth and his team were amazing and professional throughout. He was very knowledgable regarding the options available to us. All work was completed quickly and efficiently. Gareth kept in contact with us throughout our garage renovation and even kept in touch afterwards to check everything was ok for the fitment of the garage door. I wouldn’t hesitate to recommend Gareth and his team and would definitely use them again for any future building work on my home. Great job completed.
Established in 2016 as a new venture to provide a new customer friendly carpentry and joinery experience. We set out our business aims with one thing in mind (COMPLETE CUSTOMER SATISFACTION). We strive to meet all of our customers demands
Gavin came and changed 15internal doors in 2 days. I didn’t think it could be done but he proved me wrong. Great finish and he even put up with my yappy Dachshund on the first day. Would definitely use again for future works.
hi! I have a small team and we can do: -complete bathroom refurbishment -kitchen refurbishment- tiles and a carpentry job..
Florin and his team were exceptional. Extremely hardworking, they paid a lot of attention to the details and to making us happy. They are also just very nice people. We are delighted with the final outcome and would recommend Florin to everyone.
Newman plastering. I am a one man band company, with just myself on the tools This means I have no overheads, so I am able to keep the cost down for my clients, but if needs be I can lay my hands on quality plasterers who share the same skill and passion for the job as me. range of services cover: * skimming plastering * Damproofing * External rendering * Dry lining * Internal rendering * Monocouche scratched renders(k rend) Why choose me? * friendly & reliable service * Many years of experience * Pay attention to health & safety * clean & tidy I have more than 10 years experience in all aspects of the plastering trade, and started learning the art of plastering with my uncle . By the time I was ready to leave school I was already becoming handy with the trowel and had some experience behind me, so I went on to do my apprenticeship and work with various other plasterers gaining more experience and learning my trade on housing sites and various big commercial jobs, as well as doing the odd domestic and private jobs. What makes me different from most companies? Well, I actually enjoy what I do and love plastering, so you can be sure to get a top job. So now you know a bit about me, feel free to use me for your plastering needs.
Neat, tidy and excellent finish in a small rm
"From Tidy-Ups to Transformations" - Building and Landscaping that lasts the test of time **One of our teams has just completed the YOTEL Edinburgh design and build project on Queen Street which you can go to observe for yourself. To be trusted by large commercial corporations and deliver a high standard of work in a time sensitive manner, we will surely be able to deliver a project you will be satisfied with! With over 30 years of landscaping and building experience enjoyed throughout the company, you no longer have to compromise quality. Be the envy of your neighbours and call the reputable company to get it done right the first time. We offer a full design and build landscaping function as well as a subscription service on fortnightly (or monthly) garden tidy maintenance as well. Not only can we transform your space, but keep it looking new year round! With highly skilled staff and constant support a text away, we are here to make your service experience as pleasureable as your new extension, patio, driveway, or fence is going to look.
My name is Max Akkaya and my company started with plumbing and bathroom refurbishments after graduating from my NVQ level 2 course in Heating and Ventilation. In the last 20 years we have evolved into One Stop Design and Construction Ltd - a fully insured company that covers all aspects of home improvements such as loft conversions, extensions and bespoke refurbishments. I haven’t been on Rated People in a while as I have got all my work through recommendations, however I recently moved to Surrey so I am building my client base out here also. I’m straight forward, honest and pride myself to giving attention to the smallest of detail. We undertake small and last scale projects and work with a team to deliver loft conversions, extensions and bespoke refurbishments including all plumbing, electrical and gas needs.
Very pleasant experience. Punctual, polite, efficient and friendly. The job was finished to a very high standard. Would recommend 100%
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