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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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We specialise in all carpentry and building work Quality finish garinteed with nearly 30 years experience in every aspect of joinery and building work Great customer service means everything to us leaving every job how you expect it to be completed Look forward to providing you with a competitive quote
A really professional job replacing a bathroom floor which had sunk. All work was done to a very high standard and exactly to the timescale and costing. Would highly recommend.
I have 34 years experience. My work consists of loft work, extension work. Floor laying, cut roof work. Door hanging, kitchen fitting. Skirting and architraves. Cladding,fascia’s and gutters. Stair cases and hand rails. Decking
Excellent Professional Serviceman. Replaced 2 damp kitchen units and replaced kickerboard underneath. Excellent work, fully recommended
Hi. Let me help You with Your - full or part electrical rewire - garden lighting project - led strip installations - downlights installation - new kitchen electrical installation - domestic smoke detection system - extractor fans installation - smart central heating controllers - electric under floor heating - loose of power and tripping brakers - upgrade of sockets and switches - consumer unit replacement - NIC EIC Certificates
A guy called Michael showed up, gave it all the large talk about what he would do. Gave him an address for another project also out of goodwill so he didn’t have to buy another lead. Promised to get back to me despite promising me he would return that week to do the work. Instead just ignored every phone call and message. He kept mentioning about wanting to do it in the evening…. This was impossible as it was a shopfront. Absolutely no balls, AVOID LIKE THE PLAGUE!
Electrician at Self employed electrical engineer
Came out short notice. Managed to squeeze me in. Due to short notice of getting room plastered 3 days later. Had 4 double plugs put in. In chrome like I wanted. They were professional and cleaned up after themselves. Will definitely use again
Aw home and garden improvements Gardening Trees felled Stumps removal Hedges Garden tidy ups Flagging Driveways All aspects of flagging block paving Jet washing Clearances garden tidy ups Restoration Pointing House clearances Small demolition Unit clearances Thanks for looking Call now for free quote All work fully insured public liability
ANR Construction are a company based in St Ives Cambridgeshire. We specialise in all aspects of the building trade from larger Construction projects to smaller and more intricate interior works. We have professional tradesmen with NVQs in City and Guilds.
Slow measured start- due to getting out of date fixtures - fittings brought upto new standards - finished well and good quality work
I have over 30 years of experience in construction and carpentry, specializing in high-quality craftsmanship, renovations, and custom builds. My expertise includes framing, finish carpentry, remodelling and project management. I take pride in delivering durable, precise, and efficient work to meet client needs and industry standards. Let’s bring your project to life with skill and dedication
Manuel was so professional and hardworking. We are really grateful for the work he has done for us and impressed with his craftsmanship. We would definitely recommend him.
Business established since 2008
A great company to deal with, prompt, reliable and very professional. We live in an old Victorian house with hardly a straight angle anywhere. So Anunas had a tricky job to do. The job was done perfectly and to agreed cost. I would recommend this builder to you. If I could could give give 6 stars I would. Great job well done.
professional, trustworthy company clean and friendly, with over 18 years experience. We are a family run company with skills that have been passed on through generations. Every job is finished to an amazing standard at a very reasonable price.
Patrick was professional, friendly and thorough. Really pleased with the repairs and finish to my chimney that required attention. Wouldn’t hesitate to recommend to anyone, very trustworthy.
Revitalise your home with Vitality Property & Refurbishments, your Stirling experts in bespoke home transformations. We specialise in renovations that turn your dreams into reality, with meticulous attention to detail and innovative solutions. Our clients choose us for our professional, friendly, and timely service, ensuring a smooth experience from start to finish. We deliver high-quality results with exceptional attention to detail, maintaining a tidy workspace. Choose Vitality Property & Refurbishments for a smooth and fulfilling renovation journey, resulting in spaces that delight and inspire.
Excellent job wet walling and fitting out my cloakroom by Declan and Ben. Professional and friendly service. I would recommend Vitality heating and plumbing.
Whether you need a small job done or would like to add an extension to your home, we do it all big or small. We are over 15 years on the market and have hundreds of happy customers. We are committed to customer satisfaction and delivering a superior quality of work each and every time.
We were very pleased with the work carried out on the kitchen worktop. There were a couple of problems, not their fault. This meant them staying late to make sure everything was completed and working, which we appreciated. We would gladly recommend this company.
Good, conscientious company. High quality work. Orders completed on time, professional service and honesty to their customers.
Work to retile the bathroom was scheduled promptly and delivered very well, on-time and in line with the quote. Wouldn't hesitate to use again. Tidied up and left things looking smart.
Hipco Yorkshire Ltd
House Extension
*Hipco are new to this platform. They have 400+ maximum star reviews on Checkatrade, Google, Trustatrader and Which? Trusted Trader.* Leeds windows and doors company Hipco was established in 2016. Hipco has quickly become a pillar of excellence in the home improvement space, dedicated to enhancing your home with superior craftsmanship and unmatched customer service. Our reputation is built on a foundation of trust, with over 1,000+ satisfied customers. We specialise in a wide range of home improvement solutions, including double-glazing windows in Leeds, UPVC windows in Leeds, composite doors in Leeds, and conservatory roofs in Leeds, each designed to meet your home's unique needs. From the first consultation to the final walkthrough, our process is designed to be seamless, ensuring each project is on time, within budget, and exceeds expectations.
For over three decades, Millington Construction has been a trusted, family-run business dedicated to turning customer ideas into reality, consistently delivering within budget and on schedule. Whether you envision an extension or require maintenance, our comprehensive expertise in the construction industry ensures all aspects of your project are covered. Comprising a skilled team of 12 professionals, each member brings a wealth of expertise and dedication to every project. Our Services: Extensions: From single-storey to multi-storey extensions, our experienced team of builders skillfully executes diverse projects tailored to meet your specific requirements. Maintenance: Trust us for meticulous maintenance services designed to keep your property in prime condition. Our Approach: At Millington Construction, we firmly believe in the strength of our team. Our highly knowledgeable tradespeople are passionate about transforming customer ideas and dreams into tangible results. They are supported by our design and structural engineering partners, enabling us to confidently undertake projects of any size. Why Choose Us? 1. Pride in Craftsmanship: We take immense pride in our work, ensuring attention to detail in every job we undertake. 2. Driven Workforce: Our team is motivated and committed to delivering excellence, ensuring your project's success. 3. Customer Satisfaction: Your happiness is our priority; we strive to exceed your expectations at every stage of the project. 4. Certified for Security: We prioritize safety and security, ensuring that our work meets certified standards.
Quick to respond to job request, all work done efficiently and professionally. Have already requested millington construction projects Ltd to return and do another flat roof
Free estimates , work done on hour, day or price basis. 24/7 locksmith Lock out emergency Installing Locks. ... Repairing Locks and doors Refurbishments bedroom-kitchen-bathrooms Hanging Pictures & Mirrors End of tenancy refurbishments Decorating Painting Wood paneling Home improvements Tiling DIY (Construction or Repair) Plastering Bricklaying Emergency plumbing
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.
J R Griffiths roofing we specialise at 're roofing, slate tiles and leadwork. also chimney work undertook. Rubber roof and also grp
Reasonably priced, job completed the next day couldn't ask for anything more.
30 years plus of experience, all general work carried out. Clean and tidy worker always reliable.
WE ARE FAMILY RUNNING BUSINESS WE ARE PROVIDING TOP QUALITY WORK AND FARINDLY CUSTOMERS SERVICES WE ARE ESTABLISHED SINCE 2017. BATHROOM / KITCHEN FITTING . WALL FLOOR TILING. PLASTER / SKIMMING / PAINTINGS. WALLPAPERS ???? DECORATING. ROOMS. OUR ANY BUILDER WORK INSIDE OR OUTSIDE.
did the job well re shower tray that was leaking. iwas let down by a coupie of other traders , but JozsefBUILDER AND TILING came out said they could do the job quoted me avery reasonable price, .fixed the leaking shower tray and were very efficient and polite would definetly reccomend them and would hire them again
We are an established company providing building, plumbing, joinery and fitting services at reasonable prices. We are an established company providing building, plumbing, joinery and fitting services at reasonable prices. Over the years, we have built a reputation for quality craftsmanship, creativity and efficient customer service. Whether you need building extensions, renovations, plumbing, heating, kitchen & bathroom fitting or maintenance, our team members will be happy to help. Get in touch with us for services in Halifax, West Yorkshire. Our builders have a great wealth of knowledge and experience in the construction industry. Even before we start on your project, we will sit down with you to understand exactly what you are looking to change. We will turn your ideas into our designs to create your dream home. If you need more information about our services, talk to our experts today. We can even work around your schedule to ensure minimal disruption to your daily routine. All of our staff are highly aware of the COVID situation. We always use face masks for your protection and sanitise at all possible opportunity, keeping both us, you and your property safe. Reputable construction company Very competitive prices Experienced team of builders Serve across West Yorkshire Completely dedicated staff and Free estimates and professional advice.
Really satisfied was here on time, and the job was finished to a high standard
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