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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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Experienced creative and versatile in carpentry and woodworking with background in residential and commercial construction and remodeling to include framing, trim, windows, doors, and siding. In-depth knowledge of construction process from material selection, techniques, tools and equipment to quality assurance, cost control, and safety. Accurately read blueprints, project plans, and specifications; determine material needs, estimate costs, and prioritize tasks to minimize production delays. Proven expertise in project / team supervision; excel at communicating with clients, architects, and subcontractors to deliver results within budget and stated requirements. Possess full range of quality tools, reliable late-model van, and excellent driving and attendance record. I’d like to add that over the years I have met some good tradesman in all fields of building and have made relationships with them having worked on various projects together, so if I job requires additional trades I’m happy to recommend trusted people. Thanks for reading
Welcome to AM Maintenance, We specialise in all aspects of building and maintenance works. Ranging from a leak in the roof or a new bathroom. we have an extensive range of services at competitive prices whilst delivering quality.
Dan & team did a fantastic job throughout and we are so pleased with the end result. They've transformed our home. Would highly recommend to anyone looking for a builder they can trust. Thanks again!
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Aquafix Property Maintenance specialise in property extensions, bathroom and kitchen refurbishments
Derek is a professional and he came around at short notice to fix my boiler. He gave clear advice and also what he was doing. The repair required multiple visits but he managed to keep me up to date on what he was doing and also the costs were reasonable. I highly recommend him.
Quebuild London Ltd offers a full building service with every aspect of works covered no matter the scale or scope of works to both residential and commercial buildings.We also provide proactive and reactive maintenance packages with 24/7 one hour service for emergency call outs.We pride ourselves on using only highly skilled and courteous tradesmen with all trades in house so as a company we have full control of our projects. From your initial meeting with one of our knowledgeable estimators who provide fixed price detailed estimates to completion of works overseen by amazing management our clients needs are paramount,this ensures a streamlined service with quality controlled finishes beyond the industry standard. We have full public liability insurance with all risk assessments and method statements in place at all times no matter the size of works for peace of mind for us as a company but more importantly you as our client.
John at Quebuild went above and beyond for us on this job. He completed all the work in a timely manner and for a very reasonable price. He was super knowledgeable and extremely attentive to detail, making sure to leave a high quality finish in terms of decoration - and he came back afterwards to address a few small things that needed doing. He was also a pleasure to have around - and I would highly recommend him for any other work. 10/10.
SAS RESOLVE LTD
House Extension
GETTING YOUR PROPERTY REPAIRED IS OUR NO.1 PRIORITY. We are Concept Claims Solutions Buckinghamshire. An end to end project management service to return residential and commercial premises back to their pre-loss condition following our tried and tested processes and systems. With over 20 years of experience; Our system allows the complete cradle to grave management of both a property insurance claim and private renovation job from first notification through to settlement. As Principle Contractors, we undertake all aspects of property repair, rectification and renovation. SAS Resolve Ltd trading as Concept Claims Solutions (North Bucks) is an Appointed Representative of Citrus Compliance. Citrus Compliance is a trading name of Andrew Smith which is authorised and regulated by the Financial Conduct Authority. Concept Claim Solutions (North Bucks) is a franchise owned and operated under license, with a registered name of SAS Resolve Ltd. Registered Address: Jubilee House, East Beach, Lytham St.Annes, Lancashire, United Kingdom, FY8 5FT. Registered in England. Please note that photos are for illustration purposes only.
Erisure LTD , we are a family owning business running for more than 6 years. Our home improvement business is born from knowing exactly what you want in your home or business places . Our business aim is to fill your home and business places with love and comforts . Here is Just to say few of the many services we offer - We do total interior refurbishments for kitchens, bathrooms, floors , walls , ceilings, Tilings and more . Painting and decorating is also one of our core and passionate services. We improved , painted and decorated hundreds of homes so far.
Desali delivered an exceptional service. The job was certianly not straight forward but given his persistence and creative thinking he managed to provide exactly what I needed. I would recommend him as a plumber to anyone looking to get a reliable, dedicated service for any plumbing related issues or projects. He's a top bloke
I am a independent solo trader. Qualified NVQ level 3 in carpentry and joinery. I Have worked for all the major companies and have set up on my own. I take great pride in all my work and take it to the highest standards. No matter what job it is I have undertaken, customer satisfaction means the most to me. Its all about doing a good job ??.
Transforming spaces into stunning havens, Clean Lines Paving is your go-to partner for all things construction and landscaping in North East London, Enfield, and beyond. With a rich legacy spanning over 20 years, our craftsmanship speaks volumes, whether it's crafting bespoke patios, driveways, fencing, or foundations. But we're more than just surfaces; we're your trusted allies in home transformation. From seamless garage and kitchen conversions to elegant one-story extensions and inviting porches, we bring your vision to life with precision and flair. At Clean Lines Paving, we understand that every project is unique, just like every home. That's why we offer a diverse range of designs to perfectly complement your space, ensuring that every inch reflects your style and personality. When it comes to property maintenance and repairs, trust in our expertise to keep your investment in pristine condition for years to come.
Very pleasant, understanding and efficient. Quote as would be expected for the job. I’m very happy with this company.
Kierda Construction is a family-run building company with more than 30 years in the trade. Although we are based in Hampshire, we also work in Surrey, Sussex and beyond. As well as our extensive experience in building extensions, bathrooms & conservatory roof renovations (lightweight roof) we can also offer: Porches Landscaping Patios Roofing Tiling Bathrooms Kitchens Doors and windows Painting and decorating We pride ourselves on our excellent workmanship and always work to the highest standard, We are very competitively priced. Which is why 90% of our work is recommended. Please call or email us to arrange a no-obligation quote. We look forward to hearing from you.
I couldn't be happier with the service provided by the Kierda Construction. We renovated our porch, toilet and bathroom (completely gutted). Quote was clear. They have completed everything in a timely manner. During the works I wasn't at home, but they kept me updated on everything. Very respectful of the property and high quality work done. Incredible attention to details from the whole team. Absolutely over the moon, I hope to spread the word for them because they truly deserve it!
With over 25 years of experience, and with Danny Walker at the helm and Alex Grouse of W2.0 Developments Ltd has become a trusted name in construction and development in The Home Counties. As a reputable principal contractor, we specialise in delivering high-quality construction services to both residential and commercial clients. Our commitment to excellence and client satisfaction sets us apart as one of the top construction companies in The Home Counties. Founded on the principles of quality, reliability, and innovation, W2.0 Developments Ltd has grown from a small local contractor into a leading force in the construction industry across The Home Counties. Our journey has been driven by our dedication to delivering exceptional results, building lasting relationships with our clients, and continually raising the standards of construction.
Dan is a force of nature, as anyone who’s met him will agree. He and his team were always dedicated, hard-working and good natured. I would recommend Dan and his team to anyone, especially for a big renovation project like this, which involves working with other parties, such as structural engineers, kitchen designers and installers, as he works with them and takes away most of the pain. The quality of the work is excellent and he always came back to complete the snag list (even 3x for our thresholds).
TESY AYCE KIERAN
House Extension
Keep it Klean offer a wide range of internal and external cleaning. We also cover a wide range of general building and maintenance: Driveway/patios, Roofing, Fencing, tree felling and clearances. We are a professional, reliable and honest company.
Swift and helpful
All aspects of electrical work undertaken fully qualified professional service with 20 years experience.
Really quick to respond, turned up as planned & the work carried out was excellent
Simicus Construction LTD
House Extension
This is Simicus Construction Ltd, we are a team of builders with over 20 years of experience in the Construction Industry.
RAR offer a full hard landscaping, groundwork and building service, including but not restricted too, ~ Patios ~ Paths ~ Drive ways ~ Fencing ~ Turf ~ Bespoke timber structures ~ Sleeper work ~ Ponds ~ Small and medium sized building jobs ~ Garden clearance Specialising in low maintenance gardens. with over 20yrs experience in these sectors I offer high quality and am happy to chat through what is required.
Rob gave me a competitive quote and got the job completed quickly I was able to give Rob a key to my house so he completed the work while I was at work .I will definitely be using Robs company again
We pride ourselves on the quality of our work. Tailored to help you in the construction of projects whatever the size and build value.
Excellent work at the right price. Helpful and timely. Restored my confidence in builders.
INPROJECT CONSTRUCTION LTD
House Extension
WELCOME INPROJECT CONSTRUCTION - Building your future, one brick at a time. We have completed numerous projects, from small renovations to large commercial constructions. Our portfolio includes residential and commercial buildings, educational and healthcare facilities, and industrial constructions. Our mission at INPROJECT CONSTRUCTION Ltd is to provide our clients with exceptional construction services that exceed their expectations. We are committed to delivering high-quality workmanship, on-time completion, and cost-effective solutions. What sets us apart is not just our ability to construct buildings but our commitment to building relationships. We believe in honesty, integrity, and transparency in all our dealings with our clients. We value teamwork, professionalism, and continuous learning and improvement. We prioritize transparent communication, ensuring that our clients are informed and involved at every step.
Rose Projects
House Extension
A Construction Company based in South West London. Craftsmanship is our main focus ensuring every detail is finished to our high standards. Our Communication and Understanding are key. We are always on hand to help and assist you with any questions throughout the build. Our Projects are always built on time and budget. We are fully insured, All our tradesman are Qualified and References available upon request. Regards Rose Projects
Hello My name is Mario and I am an experienced builder I do flooring ,tiling,carpentry,plasterboard fitting,plastering, painting, brickwork, roofing . I have 15 years of experience and can provide excellent references from all my previous jobs ,all of them being very happy with my work. Please don't hesitate to contact me for a FREE OF CHARGE QUOTE.
Mario did a great job skimming my garden room walls. Clearly a good guy. Highly recommended.
Excellent time served Plasterer with 16 years building experience all over the UK .No job to small and always to highest standard possible. Experienced with:Skimming,Boarding,Damp proofing, wall removal (Steel work), extensions, Rendering, roofing, tiling, bathroom fitting Coving,brickwork , joinery. All work is guaranteed . Give us a call for your free quotation
I am extremely happy with the excellent work completed by Shaun and his team. The job was extremely challenging and required serious structural support work, building a new roof, plastering, fixing brick work and dismantling and then re-fitting a kitchen. The lads always arrived on time, did exactly what they said they would do and took only 4 days from start to finish to carry out all of the work. The lads were really friendly and all rubbish was taken away. I couldnt recommend them highly enough
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