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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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Founded in 2025, Bfix has established itself as a leader in luxury construction and interior design. Like a hive of diligent bees, our team works tirelessly to turn dreams into reality, creating spaces that are not only beautiful but also built to last. We pride ourselves on our ability to deliver superior craftsmanship and exceptional service. What We Offer Free On-Site Inspection – We carry out a full technical assessment to identify damage to floors, ceilings, walls, and fixtures. Trace & Access Support – We assist in locating hidden leaks and identifying areas affected by moisture. Repair Planning – We help outline the works required for restoration, based on what insurers typically expect to see. Supportive Documentation – We provide clear, itemised findings that you can use if you choose to start an insurance claim. Referral to Insurance Claim Experts – If required, we can introduce you to regulated professionals who manage claims directly on your behalf. Why Choose Bfix? Unmatched Expertise: Over many years of experience in luxury construction. Tailored Solutions: Custom designs that cater to your specific needs. Superior Quality: Premium materials and meticulous craftsmanship. Customer Satisfaction: We prioritize your vision and ensure a seamless construction process.
Alpha Miggs Enterprises
House Extension
At Alpha migss enterprises, we take pride in being specialists in construction and intricate finishes, transforming interiors into stunning masterpieces that combine beauty, functionality, and durability. With years of experience and a dedicated team of highly skilled professionals, we are committed to delivering exceptional craftsmanship that exceeds expectations every step of the way. Our expertise lies in attention to detail and the ability to execute even the most complex designs with precision. Whether it’s luxury homes, high-end commercial spaces, or major renovations, we approach every project with a tailored solution to suit your specific needs and aspirations. We work closely with our architects, structural engineers, and most importantly our clients to bring unique visions to life, ensuring that every element is crafted to perfection. We excel in using premium materials and advanced finish products. Our commitment to innovation and excellence ensures that every project reflects both timeless elegance and modern functionality. What sets us apart is not only our technical expertise but also our passion for creating interiors that inspire and delight. We understand that your space is a reflection of who you are, and we go above and beyond to make it exceptional. Every detail matters to us, and we ensure that the final result is nothing short of extraordinary. At Alpha migss , our mission is to transform spaces into works of art that stand the test of time. Trust us to handle your next project with care, precision, and an unwavering commitment to quality. Let us turn your vision into reality.
House extensions: An extension is perfect for anyone who is looking to expand any part of their home, including single or double-story extensions, kitchen extensions, side extensions and conversions. Whether you wish to create additional space, or simply want to install a state-of-the-art new kitchen to bring your home into the 21st century, our masterful design team will work closely with you to achieve your desired home extension, we will take care of the project from early stage to submit drawings, obtain planning approval all the way to provide building control certificates. Refurbishments: We take full control of your project, assisting you with designing and sourcing crucial elements of the required work. Whether it be installing fixtures or fitting your doors and windows, giving sound advice on anticipated additional value to every element of the work. Bathrooms and kitchens: First Stone Property offers everything from: Upgrading your shower or toilet Installing a bathroom or kitchen from scratch Replacing your existing kitchen or bathroom suite We will work with you to design your perfect space, from layout and plumbing to fixtures and fittings, you will be given a fully coasted solution before work begins, making sure there are absolutely no hidden surprises along the way. Loft conversions: Loft conversion can have a huge impact in unlocking the hidden value of your home. Loft conversions create an entire new living space from something that was once neglected. We can convert your unused loft space into a liveable area, such as a bedroom, office, living room or play area. Loft conversions are a great way to add extra space and value to a property and, most importantly, they can be a very affordable investment.
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.
W S BRICKWORK SERVICES
House Extension
W S Brickwork & Building Services offers a professional reliable service and a wealth of experience from being in the industry for 25yrs. High quality workmanship guaranteed with customer satisfaction our number 1 priority
Clearview Glazing have over 40 years experience. We are a fensa registered company, and give all of our customers a 10 year insurance backed guarantee. We are trustworthy, reliable and we take pride in our work. Our quotes/prices are very reasonable and genuine.
An excellent experience from start to finish. I'd much rather give business to smaller family-run companies like Ceejay. Great communication throughout the process. The whole window fitting took slightly less than 3 days. Connor and his colleague were friendly, polite, very meticulous in their work, and really good at tidying up at the end of the day. The new windows look simply superb, and have transformed our house. I would certainly use Ceejay again.
Miro Builders
House Extension
Qualified, experienced Plumber, Electrician, Carpenter, Tiller, Painter and Decorator with a strong commitment to delivering high quality workmanship and maintaining solid business relationships. A highly organised professional who is able to prioritise competing workloads and deliver projects on time and on budget. Strong communication and negotiation skills with the ability to persuade and positively influence client decisions. Expertise in a wide variety of projects, anticipating problems and providing creative solutions. Work experience: Present Owner of General Building company „Miro” , United Kingdom Plumbing Electrition Painting Decorating Tilling Carpender Owner of General Building company in Poland * Heaveduty * Tilling * Bricks * Windows fitter * Doors fitter * Decorating * Flooring
Roofing , Cladding and Building LTD company. industrial , commercial, retail , private and agricultural . Building and renovation works. House renovations and remedial works. ASBESTOS REMOVALS AND OVERSKIN SPECIALISTS. flat roofing and tin sheeting. single ply and pvc rubber roofing. cladding ,rainwater pipes, and gutters. gutter clearance and blocked downpipes. GRP AND FELT ROOFING TOP SEAL APPROVED INSTALLERS Window and door sealing works, and re-sealing works. Machine operators and drivers. insulation works , internal and external. steelwork and metsec framing. maintenance and remedials Building works. All high level works and signage fitting. House clearances and removals. SOFFITS AND CANOPIES erected and dismantled . Full shed and garage demolition and removal works. Try us for a price , we won't be beaten. We cover all jobs nationwide. We provide scaffold and netting when needed and all work is guaranteed.
Clad K Sheeting, excellent service, arrived on time, did exactly what I had asked for, friendly and polite and at a execellent price would recommend them to anyone and should I need them again would definitely ring them first. Well done guys.
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I cover all aspects of building work, carpentry, tiling and landscaping.
Apex is a maintenance service company, specialising in Plumbing, Heating and General Building. Our experienced team offer a host of skills, covering many different sectors to allow us to be your one-stop shop. So whether you're a domestic customer with a plumbing and heating issue, or, a domestic client requiring general property solutions, we can tailor your needs under one roof. Our team is fully insured and with over 30 years of experience, we're the go-to company for plumbing and heating, with a quick-to-action call-out priority covering Oxfordshire, Bucks and Berkshire.
Fantastic job. Clear communication and completed the work within time. Will recommend whole heartedly.
Callisto
House Extension
Callisto Construction, established in 2001, are run by a team of building experts with over 60 years of experience and are based in Sutton-At-Hone at the end of the Darenth Valley. We Design & Build and can take your project from an idea through planning to completion. From small extensions, refurbishment & structural alterations to full new builds, large or small and with full accreditation with various industry bodies such as The Federation of Master Builders, we give you peace of mind, knowing that your Build is in safe hands! We value and pride ourselves on our reputation and look to partner with our clients to give them the most positive experience possible when embarking on what is often a clients most valued and important asset, their home! We offer simple design advice such as space planning, Kitchen & Bathrooms design & renewable energy solutions to Full Planning, Structural Engineers and our own Architects. Callisto are fully insured, trading standards approved and offer a suite of Build Assure warranty products for the domestic and commercial markets. If you are interested in discussing your build please contact us We do hope that you get in touch! Kind Regards, Bram Martin (Director)
Jaclan Masonry LTD
House Extension
With over 30 years of experience in the building trade, we specialise in all aspects of bricklaying, groundwork, landscaping, patios, and driveways. We undertake all types of building work, including new builds, extensions, renovations, chimneys, garden walls, retaining walls, patios, driveways, and all associated groundwork. Our fully insured team is highly trained, experienced, and competent, delivering quality workmanship and professional service on every project. We take pride in completing all work to the highest standards, safely, efficiently, and with attention to detail
Wide variety of projects undertaken and delivered on time every time.
Literally an entire house rebuild/refurbishment/modernisation. Excellent standard of work, completed within time & specified budget. Good communication throughout entire process. Would have no hesitation in using again & also recommending to friends & relatives.
R ALEXANDER CONSTRUCTION LTD
House Extension
R Alexander Construction ltd We are a small well run team, specialising in loft conversions and extensions. Unlike our competitors, we don’t focus on mass turnaround of projects. We focus on quality workmanship, Making sure no detail is left unturned. We deal with everything from start to finish including private building control, structural engineers and liaising with architects to keep your project moving forward flawlessly. R Alexander construction are a Very customer focused company, communication is of the upmost importance to us. Because we understand that life is expensive We can work on labour only price if preferred. This gives you the client; much more control over the finances. With guidance from us you can order your own materials, this can save you money and help keep you really involved in the running of the project. R Alexander promises- Easy to follow pricing. All Extras will be discussed and agreed in writing before work carried out. Weekly meetings so the client is kept up to date on progress. Labour 25year guarantee Best materails used with our trusted well used building merchants which gives us preferred treatment on delevery times and services.
We are a family run business with 25 years experience.We take pride in a vast knowledge of the construction industry from small repairs to total house builds. All our tradesmen are fully Qualified,insured and professional. Covering England & S.Wales.
KL joinery services offering all types of joinery work
We were looking to change 7 internal doors and Kieran was first to reply , he came to see then he sent us the price for doors to buy and deliver and fully installed , when we accepted he came out on time and finished the job in one day and we are very happy with the work , thank you again Kieran .
We believe that no job is too small. From home refurbishments to large commercial contracts, we are experienced and knowledgeable to get the job done for you! Every job is managed by Betka to ensure every project is delivered to the highest standards. We work with you every step of the way to capture your requirements and ensure the result is just as it was envisioned. We take pride in our ability to provide professional, timely, and experienced services.
Michal and team did a great job in adding office room, remodelling and fitting new kitchen, flooring and renovating the full house for us within 2.5 months. All team members were professional and worked very fast to complete the work on time.
Blueprint are a building and landscaping company with over 20 yrs experience. We are commited to giving our clients a professional and punctual service not forgetting the importance of quality workmanship, giving a full and comprehensive service.
Top quality work and price was very good. Recommended.
BRO PLAN DEVELOPMENTS
House Extension
September 2023 We are a small family run sole trader business With our ethos 3 C's= care and commitment in construction our first priority I am 37 with 20 years experience in the construction industry as a labourer, bricklayer, ground worker, plant operator- dumper and digger above 10 tonnes, sssts and nrswa supervisor competent winch operator, combined with practical, hands-on experience in excavating-cable avoidance finding-exposing, reinstating of concrete, modular paving and tar macadam. I am qualified in several construction led courses as stated below. I am physically fit with a good head for heights and working in confined spaces. Precise, accurate and reliable hard worker with good communication skills, self motivated and confident with the ability to work as part of a team. I can take charge if required and confident to be able to lead a team. I am keen to develop and attend the relevant training programmes to learn more with a view to progressing within certain job roles, updating current skills and keeping my portfolio current. I am aware of the importance of keeping within the Health and safety regulations and the importance of using the correct PPE. I am flexible and willing to work unsocial hours, overtime, weekends and bank holidays if required to do so. I am currently seeking construction work in the U.K
My names Tom, I have been in the real estate sector for over 10 years and have done everything from general property maintenance, new bathrooms, painting/decorating, demolition contracts and most recently constructed 9 ultra high spec homes. High quality and impeccable workmanship are key values to me and ensuring the client is satisfied and more, with the work they are receiving. I am very well connected with all trades and can provide a top tier service for all types of project management no matter how big or small the job may be. I am also extremely capable at doing many manual labour jobs, but often favour a shorter timeline for my clients project completion and therefore prefer to draft in experienced trades to get the job completed. Above all I am very friendly, well spoken and always keen to deliver what is asked of me.
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