Extension Builders in West Smithfield

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (18 reviews)

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Some of our top rated extension builders in West Smithfield

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FLV PROPERTY LTD
Rating: 5 out of 5
Extension Builder in West Smithfield
At FLV property ltd we are a team of skilled professionals with extensive experience in the construction industry for over 30 years. Whether you are planning a new build, an extension, a renovation or bespoke projects, our expertise ensures that every job is completed to the highest standards on and within budget. What we offer; •A team of dedicated professionals •Architects •Structural Engineers •Surveyors •Multi skilled tradesmen Attention to detail from design to composition. Our promise; We understand that building projects are significant investment's, and our goal is to make the process as smooth and stress free as possible. From initial consultation to project completion, we work closely with you to ensure your expectations are not only met but exceeded. LETS BUILD TOGETHER!
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Latest review:
Gus and Frank were brilliant. Their attention to detail and care for our project was evident. There was already an issue with our floor which Gus and Frank rectified for us before doing the tiling. The final finish was immaculate. We liked their work so much that we also got them to fit our kitchen worktop. Good communication and clarity throughout the job. Would definitely recommend!
Exquisite Design & Build Ltd
Rating: 5 out of 5
Extension Builder in West Smithfield
Welcome to Exquisite Design & Build, a premier construction company based in London. We specialise in delivering exceptional construction work and Architectural & Structural Design services to both Commercial & Residential Clients. Our comprehensive offerings include the full range of Building & Refurbishment Works, Planning Applications, 2D & 3D Design and Visualisations, Structural Design, Project Management and detailed Estimates. “Exquisite” - carries the implication that every detail of our work, is of rare and appealing excellence. We transform your vision into reality with precision and professionalism, ensuring a seamless and satisfying experience from concept to completion. Our company is TRUSTMARK registered company, a Government-endorsed sign of consumer protection for home improvements, repairs, renewable energy installations and low energy retrofits. We are also member of the FEDERATION OF MASTER BUILDERS.
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Latest review:
Exquisite Design and Build recently reworked and refurbished our new, six bedroom detached house, having previously completed a kitchen extension at our last property. Andrei’s work is of an incredibly high standard. He shows great attention to detail throughout the entire process. Not only does he execute the work beautifully, but he offers great design ideas and and suggestions. With regard to contracting, pricing and invoicing, Andrei provides clear and accurate documentation which gives us complete trust in his ability to work within our budget. Andrei and his team are an absolute pleasure to work with; hardworking, punctual and tidy. I have recommended them to three other friends, all of whom chose to work with him on their extension/refurbishment projects and were equally delighted with the results. I would not hesitate to recommend Exquisite Design and Build to anyone, regardless of the size and complexity of their project.
RESSI LTD
Rating: 5 out of 5
Extension Builder in West Smithfield
RESSI is a London-based building contractor, specialising in refurbishing and building lofts and extensions. We are a family run business with a focus on spending time with our clients to make the experience worthy of the investment. We have a great eye for detail and can help you with all your choices such as kitchens, joinery (our own), sanitary ware and anything else you might need.
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Latest review:
It is stunning. Loved working with Ressi. The end result is perfect. It is our dream home. They listen well and want to do what is best for all
Solid Group Renovations
Rating: 5 out of 5
Extension Builder in West Smithfield
We are a highly experienced and skilled team specialising in property refurbishment and renovation. Our expertise includes HMO conversions, loft conversions, house extensions, and complete property refurbishments. We work closely with our clients throughout every stage of the project, ensuring clear communication and a smooth, stress-free experience. We are always accessible and committed to keeping you informed, so you remain in control of your project from start to finish. Our goal is to deliver high-quality workmanship and bring your vision to life, helping you achieve the renovation or property transformation you have always envisioned.
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Latest review:
Bathroom Fitting- 20 May 2026
Saba and Zura were outstanding and an absolute joy to work with on this project. I initially hired them to fit my new bathroom, and I was so impressed with the quality of their work, that I asked them to complete the rest of my renovations, which included new flooring, decorating, installing wall panels and fitting a new kitchen. All of it were completed to the highest standards and ahead of schedule.They are very professional, friendly, hard working and communicates so well. This is my third project, and by far the most stress free one, I couldn't recommend them enough! Thank you guys
Onyx Services Limited
Rating: 5 out of 5
Extension Builder in West Smithfield
Onyx services Ltd which is part of the Wigwam construction Group has been in the home improvements business for many years. All engineers are Gas safe and NIEIC registered. We undertake all types of building, construction, plastering, painting as well as heating, plumbing & electrical installations. Onyx has £5 million public liability insurance. All work comes with written garuantee. All major debit/credit cards accepted.
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Latest review:
Extensions- 13 Feb 2025
Shami and his team had been fantastic from start to finish! Before hiring his team he showed me around a house his team built, which was amazing to see. His communication was excellent throughout the progress of my renovation and very reassuring. Even as I had made changes to the build, he was very helpful in planning and adjusting to my needs. His team had built a single floor rear extension, including a new kitchen, bathroom suite, full electric rewire and plumbing from scratch. Also, comparing his team with six other builders, he had one of the most competitive quotes for the build. Post finishing the job, any issues I had were resolved immediately putting me at ease! I would definitely hire Shami and his team for any future jobs.
Rizart terzeta
Rating: 5 out of 5
Extension Builder in West Smithfield
Experienced London-based carpenter specialising in commercial and residential work. Certified fire door installer, delivering high-quality, reliable, and compliant workmanship. Tape and joint Painting Glazing Partition walls Wall panels Standard doors Fire doors
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Latest review:
Carpentry- 10 Nov 2025
We know how difficult is to find someone reliable who knows what is doing. Well ,Rizart is the one who you can trust, relay on and have the job done in no time. 8 fire doors fitted in 2 days with certificates Thank you Rizart
CDW building services
Rating: 5 out of 5
Extension Builder in West Smithfield
I as the manager have been personally working for a family run business for ten years+ as a multi skilled trader covering all aspects of the building industry which includes: Carpentry Bricklaying Bathroom refits Kitchen refits Extensions Plastering Plumbing Electrics My business is very reliable as all work is carried out to a high standard and is thoroughly checked.
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Latest review:
Plastering- 29 Apr 2026
Quality job done in just a few days. Definitely recommend this company.
Swift Building Masters
Rating: 4.9 out of 5
Extension Builder in West Smithfield
General Builder of over 40 years Experience. Carpentry & Joinery Background. I have worked on large and small Projects, Repair, Refurbishment, Extensions, Loft conversions and New-builds. Recently become a member of Federation of Master Builders. ALL WORK QUALITY ASSURED
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Latest review:
Extensions- 5 Nov 2016
Leslie carried out the following works: chemical damp injection to walls on rear extension, reroute down-pipe, repair fracture on rear wall, install gutter hedgehog. Hopefully, this will resolve some of the issues we had with damp, a blocked down-pipe and an overflowing gutter. Leslie arrived on time on the first day but was delayed a few hours the next day. However, the work still was done within two days as expected. Thank you!
GRAND DESIGNS INTERNATIONAL LTD
Rating: 5 out of 5
Extension Builder in West Smithfield
Grand Designs International (GD) | Architectural, Engineering & Construction Services At Grand Designs International (GD), we are dedicated to delivering high-quality architectural, engineering, and construction services tailored to meet our clients’ unique needs. Backed by over 20 years of expertise, our team specializes in transforming visions into reality—whether you're planning a new build, home extension, loft conversion, or full-scale renovation. With a strong foundation in innovation, sustainability, and precision, we provide end-to-end project solutions, from initial design and planning permissions to structural calculations and final construction. Our commitment to quality, efficiency, and client satisfaction ensures that every project is completed to the highest standards. Why Choose Grand Designs International? ✅ Full-Service Expertise – From architectural planning to construction, we handle every stage seamlessly. ✅ Planning & Building Regulations Specialists – We navigate approvals efficiently to prevent delays. ✅ Experienced & Certified Team – Qualified engineers, architects, and builders with a proven track record. ✅ Tailored Solutions – Every project is custom-designed to meet your style, space, and budget needs. ✅ Transparent Pricing & Project Management – No hidden costs, just reliable service with regular updates. ✅ Fast Turnaround & On-Time Delivery – We work efficiently without compromising quality. Our Services 🏡 Architectural & Planning Services Planning Applications & Building Regulations Approval Concept & Detailed Design Interior Design & Space Planning 3D Visualizations & Rendering Enforcement & Retrospective Planning 🏗️ Structural & Engineering Design Structural Calculations & Drawings Civil & Structural Engineering Services Quantity Estimation & Cost Planning 🔨 Construction & Building Services Home Extensions & Rear Extensions Dormer Loft Conversions & Flat Conversions New Build Homes & Full Renovations Project Management & Site Supervision Construction Planning, Procurement & Logistics Quality Control & Safety Management At Grand Designs International, we believe in delivering excellence, one project at a time. Our reputation for integrity, professionalism, and top-tier craftsmanship makes us the preferred choice for homeowners and businesses across London and beyond. 📞 Get in Touch Today! Let’s discuss your project and bring your dream home to life.
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Latest review:
★★★★★ Highly Recommended! I had an existing 3-bedroom rundown property and contacted multiple builders before meeting Director Mr. Q Nawaz. From our first meeting, I was impressed by his ideas and the fact that Grand Designs could provide all services in-house. Initially, I proceeded only with the planning application to see if what he promised was possible—and YES, he delivered! My application was approved as he assured me. Seeing this success, I entrusted them with the entire construction project, and Grand Designs completed it within just 6 months, despite the challenges of COVID-19. Not only did they build my project, but they also added significant value to the development. I’m proud to have worked with them, and their exceptional work on my St Albans development is now featured in their portfolio. Within one year, the value of my property increased by £500,000—a testament to their expertise! Extremely professional, highly skilled, and very reasonably priced. You don’t need to go anywhere else—Grand Designs is the complete package!
(TLC) THE LONDON CONSTRUCTION GROUP LTD
Rating: 5 out of 5
Extension Builder in West Smithfield
cover a broad spectrum within construction ranging from both residential and commercial contracts, bespoke builds, refurbishment, and maintenance also implementation of design from minimalist design to period restoration and renovation of properties.
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Latest review:
Restoration & Refurbishment- 16 May 2021
TLC have completed the first phase of the project which has involved a complete renovation and upgrade of the kitchen, bathroom, and rear garden area. A new contemporary staircase has also been fitted. The work has been completed well ahead of schedule, and this is testament to the planning and coordination skills provided by TLC. All of the work has been completed to a very high standard, and a great deal of care has been taken to ensure the minimum disruption to the local residents. We are extremely grateful for the advice and support provided to us leading up to the restoration work and whilst the restoration was underway, and we are absolutely delighted with the final results. Our house has been transformed into a contemporary family home. Many thanks to Bradley, Paul, and the rest of the team at TLC.
Pops Building Services Ltd
Rating: 5 out of 5
Extension Builder in West Smithfield
I am a city and guilds advanced craft qualified carpenter/joiner With over 30 years experience in the construction industry. I was the director of a property development company. I’ve managed contracts for NHS trusts as well as private contractors. The types of work I normally undertake are loft conversions, extensions, renovations, kitchen and bathroom installations
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Latest review:
Peter was the on-site foreman on our complete house renovation, which took just over a year. This included an additional ensuite pod bedroom in the roof and a side-return and extension to the kitchen. Peter was totally reliable throughout the project and thoroughly professional. Throughout this time we were living in the house with the children. He was always on time, managed the on-site team well and communicated clearly with us. His workmanship is high quality and he was also a stickler for checking the work of others and getting it updated if it wasn’t up to scratch. I have no hesitation in recommending Peter.
SZG BUILDING LTD
Rating: 5 out of 5
Extension Builder in West Smithfield
18years of experience in the construction sector. I may only offer you quality services and nothing less, with SZG BUILDING LTD you will not have to worry about anything. I specialise in every stage of the construction process, right from the very beginning till the very end, in other words from FOUNDATION to DECORATION in the blink of an eye. I will be very pleased to show my previous work, it may be the final outcome or different stages of various projects. References may be provided.
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Latest review:
Kitchen Fitting- 20 Jun 2019
Really pleased with Slawek and his team and would defiantly recommend them after seeing a professional kitchen fit job which they did for me. They went extra mile to resolve some design issues during the fit, kept the work area clean and tidy and behaved in friendly, polite manner. Nice, reliable team charging very reasonable prices.
AA Build and Maintenance
Rating: 5 out of 5
Extension Builder in West Smithfield
AA Building & Maintenance is a trusted London-based contractor offering professional building and property maintenance services. From plumbing and heating works to full refurbishments and reactive repairs, we provide efficient, high-quality solutions for homeowners, landlords, and property managers. We pride ourselves on reliability, transparent pricing, and delivering work that stands the test of time.
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Latest review:
Great service, prompt and efficient on time and clean. finished on time and did a fantastic job, will definatley use again and recommend to friends and family.
Lezha Building Ltd
Rating: 4.9 out of 5
Extension Builder in West Smithfield
LEZHA BUILDING LTD Hello my name is Astrit. I’m the Director of the company We have a lot of experience in different trade so my business started in Italy but from 2015 we are based in london do not hesitate to contact no matter small or large work, we will reach you wherever you are.Thanks 🙏
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Latest review:
Tiling- 10 May 2019
As per the previous reviewer I don't usually hire tradesmen when there is only limited feedback, but given the glowing report I took the risk. And it proved to be a great decision. Astrit was great - clear communication, arrived when he said he would, sought our opinions on the key decisions and gave some great advice, before ultimately doing a great job for a reasonable price. A pleasure to deal with and will hire again for any future tiling work. Thanks Astrit.
Firfield Property Services Ltd
Rating: 5 out of 5
Extension Builder in West Smithfield
We specialise in renovations & refurbishments of residential properties in London. Our team arrive on time, are highly professional & polite and leave your home in pristine condition. **Free quotation and advice **All work guaranteed **Fully insured ** References available
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Latest review:
Handyman- 26 Aug 2014
The job went very smoothly and there were no problems. Twana, from Mark's team was punctual, professional and did the job exactly how we wanted it. We will certainly be using them again.
Artesão Bespoke Carpentry
Rating: 5 out of 5
Extension Builder in West Smithfield
Hi I’m a carpenter of 20 years, who has worked on various sized projects, from home refurbishments to big site new builds. I carry out all aspects of carpentry, to name a few: kitchen fitting, bespoke wardrobes, tv units, book cases, laying floors. I am a reliable, trust worthy individual, with my own transport, working in and around London. Happy to offer free quotations.
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Latest review:
Bathroom Fitting- 29 Apr 2023
Many thanks to Kris abd Kane on a job well done. Despite the very tight schedule, they completely refurbished our bathroom transforming it to a high-end (hotel standard) wet room. Kris's original quote was very competitive. There were extras, but these were very reasonable. Once the job was completed Kris actually came back to install 4 or 5 grab bars without additional cost. Kris, and Kane are both very easy to get on with; thoughtful and calm characters. I travelled abroad during the job; Kris contacted me regularly and responded promptly when I reached out to him. As with any job' there were glitches but Kris's solution focus approach ensured a good outcome. Hope to work with this company again.

4.1

Top rated Extension Builders

Our Extension Builders in West Smithfield, are rated 4.1 out of 5 based on 18 reviews from customers like you.

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What types of services are offered by local extension builders in West Smithfield?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in West Smithfield for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in West Smithfield who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen West Smithfield extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in West Smithfield?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in West Smithfield will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several West Smithfield extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your West Smithfield home extension project is likely to cost.

Find extension builders in West Smithfield with MyBuilder

Hiring the right extension builder in West Smithfield with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local West Smithfield extension builders. Once your job is live, we’ll share it with home extension builders in West Smithfield who can express their interest.

Step 2: Compare different extension builders in West Smithfield

When you start receiving interest, review profiles of local West Smithfield extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire West Smithfield extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in West Smithfield, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

West Smithfield extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a West Smithfield extension builder before hiring?

Before hiring an extension builder in West Smithfield or extension building company in West Smithfield, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in West Smithfield?

An extension builder in West Smithfield should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your West Smithfield extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in West Smithfield?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the West Smithfield extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most West Smithfield extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in West Smithfield

Can an extension builder in West Smithfield help with planning permission?

Yes, many extension builders in West Smithfield can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in West Smithfield handle everything from design to construction?

Many West Smithfield extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in West Smithfield help with materials and finishes?

Yes, most extension builders in West Smithfield can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.