Extension Builders in Marlow

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (10 reviews)

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Some of our top rated extension builders in Marlow

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CMB Building Services limited
Rating: 5 out of 5
Extension Builder in Marlow
We are an experienced, fully insured and professional construction company carrying out projects in the UK since 2007. All of our tools, employees and suppliers are the best in the business. Due to our long history of working with renowned suppliers, you get to use our exclusive discounts on all materials.
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Latest review:
Extensions- 26 Feb 2021
Hired CMB builders to do a small single story extension and fitting of our kitchen and dining room in Jan 2021. This included some structural works (taking out rear wall and inserting steel beam) and fitting bifold doors, plumbing etc. Constantin was very quick in providing a quote and explained everything over the phone. We agreed a timescale for the works which was perfect for us. Constantin and his team were punctual, respectful and considerate of both us and our neighbours, carried out the works on time, on budget and keeping us informed every step of the way. He also made regular suggestions and recommendations on the best way of approaching parts of the build. The quality of the work is excellent and we are very happy with our extension. We will happily use CMB again for further works on our house and would recommend to anyone - they are fantastic.
Cousins Brickwork
Rating: 4.8 out of 5
Extension Builder in Marlow
Cousins Brickwork puts quality first. We provide quality brickwork, landscaping and specialist repointing. We take pride in our work and reputation. No job too small or too big, we are happy to cater to all jobs. Fully insured and qualified bricklayers and labourers, many years of experience through out the team. Hope to hear from you soon Cousins Brickwork
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Latest review:
Repointing- 1 Dec 2025
Really wonderful work. Matt was a delight to deal with from start to finish and his work was a very high standard. I would strongly recommend him. We want him to do more work for us.
Donnelly Building
Rating: 5 out of 5
Extension Builder in Marlow
A Carpenter by trade, I have been in the building trade for over 30 years. My company can provide you with a competitive quote for New Builds, Extensions, Conversions, Fitted Kitchens, Made To Measure Wardrobes and Bespoke Internal Shutters. I look forward to assisting with your project.
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Latest review:
Carpentry- 18 Feb 2021
Dean was great. Nice guy, did the work efficiently and at a fair price, I'd definately ask him to help on anything we do in the future.
Kotson Construction Limited
Rating: 5 out of 5
Extension Builder in Marlow
Hi we cover all aspects of property no job is too small or big for us. We are reliable , trustworthy and hard working.Our success is built on providing the best services and ensuring that all our customers are happy with our services Thanks Jagdeep
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Latest review:
Extensions- 22 Aug 2022
Jagdeep and his team have been great. He is very polite and throughout the whole project we got along very well. He has done a great job for the complete project. I have asked him to come back to more and more work. It started off with a 16m2 bungalow, then 60m2 driveway then another 60m2 porcelain patio with stainless handrails. He has built the bungalow extension with complex steels. His brick work is fantastic, all the other brickys have said the work looks very good. He is was good keeping to our agreed price, and when I have asked him to do extra work his pricing has been very honest. If I ever have another project like this again, I would choose Jagdeep again.
M Lomas Construction
Rating: 4.8 out of 5
Extension Builder in Marlow
My name is Mark Lomas and am a building contractor who specialises in extensions and refurbs, down to the smaller projects. I have a team of tradesman who cover every aspect of the building industry who I have worked with for many years who are professional and always leave a high quality finish.
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Latest review:
Extensions- 1 Feb 2023
We are in the last week or so of the extensive remodelling of the kitchen, utility room beyond plus bedroom upstairs. Mark Lomas and his team have been truly amazing, not just in exercising real building skills to blend the extension harmoniously with the existing Edwardian home but also in some imaginative problem solving as well. Costs have been spot on budget, save where I have caused additional work and fitting out, other than some unusual costs arising from some specialist joinery work which enabled the timber windows and doors to be exact replicas for others built 120 years ago. Honestly, I could not speak higher of the care and attention we have been given. I could get cross about the driving rain and the gruesome frosts and miserable cold, but that's a British Winter for you; Mark and his team certainly did not grizzle, and have stayed professional throughout. Circa £100k budget, so a reasonably size job and quite a risk for the builder - for my next project, I shall certainly use again in a heartbeat.
G SINGH
Rating: 5 out of 5
Extension Builder in Marlow
G SINGH BUILD is your trusted partner for high-quality home improvement and building services. Specializing in carpentry, bathroom fitting, fencing, gutter installation, driveways, and a wide range of general building work, we bring skill, reliability, and craftsmanship to every project. Whether you're renovating your bathroom, upgrading outdoor spaces, or tackling a full home improvement job, G SINGH BUILD delivers durable, precise, and beautifully finished results—on time and on budget. We take pride in turning your vision into reality with a commitment to excellence and customer satisfaction.
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Latest review:
Painting & Decorating- 26 Mar 2025
G singh gaves me an excellent job more than my expectation and helped me a lot as i dknt know much about construction work thanks G SINGH
Sidhu Construction
Rating: 5 out of 5
Extension Builder in Marlow
Hi its mr sidhu, Doing building works from last 5 years . we always try to make sure that our work can deliver the best result while constructing something.construction is not easy-but we love to do it with ease. As construction company we are very passionate about our building job. our constructions works inspire us every single day.we love to do far away jobs , we provide u quality job in best price . You can check our work on TIKTOK as @perdeeplahoria02
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Latest review:
Plastering- 6 Aug 2024
I highly recommend this company for their outstanding and quick service. They maintained a high level of professionalism throughout the entire project. The team were respectful and made sure the work was done with great attention to detail. They've done an excellent job skimming multiple walls and ceilings in the house. I'll be hiring them for a larger project in the house in a few weeks. Good workmanship is rare these days, but these guys truly exceeded expectations.
Guarded Properties
Rating: 4.7 out of 5
Extension Builder in Marlow
All works covered by £1m Public Liability All Building Works New Builds Extensions Refurbishments Outbuildings Roofing Bricklaying Electrics Carpentry GRP Roofing Asbestos Roofs Flooring Fascias Guttering Plastering Tiling Painting Decorating Ground Works Patios & Paving Fencing Carpeting Liaising with Building Control & Planning Your one stop construction shop!! High quality works Competitively priced Will beat any formal quotation on like for like basis!
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Latest review:
Extensions- 4 Jun 2022
Danny designed and built us a garden room to fit a challenging space at the bottom of our garden. His communication from start to finish was excellent, and he did an brilliant job on the room, inside and out. I would recommend Danny for any job, big or small.
Contempo interior ltd
Rating: 5 out of 5
Extension Builder in Marlow
Highly skilled kitchen fitter with extensive knowledge of kitchen,bed room and living room furniture.I can help you create your dream space from design,acquisitions of suitable units to completion of your project in a timely and most cost efficient way.
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Latest review:
Kitchen Fitting- 8 Mar 2025
Spoke with Contempo and they stated they would be able to attend to do the job that evening as they would be in the area, they arrived at the time stated and carried out the works there and then as required and expected. Provided a demonstration of the fan working and also installed the cupboard door to the face of the extractor unit. Cleared up and charged the amount that was agreed. Great, reliable and professional service.
Paramount Build Group Ltd
Rating: 5 out of 5
Extension Builder in Marlow
At Paramount Build Group Ltd, we are proud to be a leading force in the UK construction industry. Based in London and the South East, our reach extends across the nation, delivering exceptional results on projects of all scales. From large-scale residential developments to high-end commercial spaces—including hotels, gyms, and spa facilities—we bring vision to life with precision, reliability, and unmatched expertise.
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Latest review:
Great communication through every stage of the build process, offering great advice along the way.
Costel Corodescu
Rating: 5 out of 5
Extension Builder in Marlow
Hello everyone! Me and my team we have vast experiance on all types of Groundworks , New Builds , House Extension , Loft Conversion We offer High quality work at verry competitive priceses
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Latest review:
Extensions- 25 May 2026
Costal has done a great job. I wouldn't say he was the cheapest quote but after reading the reviews we hired him because of his reliability. I found him reliable and always turned up when we needed during the project. He recommended us other contractors and supported us to achieve the goal we were trying to achieve. I would recommend Costel 100% if you want to have reliable builders for your home. Thank you
SJD BUILD LTD
Rating: 5 out of 5
Extension Builder in Marlow
Full House Renovations , Kitchen , Bathrooms , Driveways , Extensions, Loft Conversions ,
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Latest review:
Exceptional Home Building Experience Rating: ⭐⭐⭐⭐⭐ (5/5 stars) I recently had the pleasure of working with Jarmaljit Singh to build my dream home, and I cannot express enough how thrilled I am with the entire experience. From start to finish, every aspect of the process was handled with the utmost professionalism and attention to detail. Communication: ⭐⭐⭐⭐⭐ (5/5 stars) Jarmaljit Singh and the entire team were excellent communicators throughout the entire project. They kept me informed at every stage, promptly addressed any concerns or questions I had, and ensured that I felt involved in the decision-making process. Quality of Work: ⭐⭐⭐⭐⭐ (5/5 stars) The craftsmanship and quality of workmanship displayed by Jarmaljit Singh exceeded my expectations. The attention to detail is evident in every corner of my new home. The materials used are of the highest quality, and the construction is solid and well-executed. Timeliness: ⭐⭐⭐⭐⭐ (5/5 stars) Jarmaljit Singh adhered to the agreed-upon timeline, completing the project on schedule without compromising the quality of the work. This level of reliability was greatly appreciated, and it made the entire process stress-free. Customer Service: ⭐⭐⭐⭐⭐ (5/5 stars) The customer service provided by Jarmaljit Singh was exceptional. They went above and beyond to ensure my satisfaction, addressing any concerns promptly and with a genuine commitment to making sure I was happy with the end result. Overall Experience: ⭐⭐⭐⭐⭐ (5/5 stars) Building a home can be a daunting process, but thanks to Jarmaljit Singh, it was a smooth and enjoyable experience. I am now the proud owner of a beautifully crafted home that meets and exceeds all my expectations. I highly recommend Jarmaljit Singh to anyone looking for a reliable, skilled, and customer-focused home builder. Thank you for turning my vision into a reality!
6;59 design
Rating: 5 out of 5
Extension Builder in Marlow
We are a local building company which specialises in quality. We do things the right way with cost transparency. We offer everything from design to completion and everything in between. All our core team are employed by us so you will see the same people all the way through your project. We specialise in everything from refurbs - extensions and everything in between. 6;59 design is the way forward.
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Latest review:
Extensions- 3 Apr 2019
6:59 are fantastic. They take pride in their work, are respectful, tidy and do what they say they will do. Budget was bang on, and timeframes realistic. We love our new open plan downstairs space, with a new kitchen/diner. Couldn't have asked for a better company to work with. Thank you Scott and team!
Luxuryclean
Rating: 4.5 out of 5
Extension Builder in Marlow
👋 Hello! I’m your reliable local handyman & professional cleaning specialist – ready to help with any job, big or small! I run my own company, offering trusted, high-quality handyman and cleaning services with professional tools, attention to detail, and great customer care. Whether you need something repaired, installed, or cleaned – I’ve got you covered. 🛠️ Handyman Services: ✅ Painting & decorating ✅ Flooring & skirting ✅ Furniture assembly ✅ General repairs & maintenance ✅ Flatpack installations & more 🧼 Professional Cleaning Services: ✅ Carpet, mattress & upholstery cleaning ✅ Pet stain ✅ End of tenancy cleaning ✅ After builders deep cleaning All services are delivered with professional equipment and a focus on customer satisfaction. 💷 Great prices & open to negotiation – I work with all budgets and always aim to offer the best value for money. ✅ Friendly – ✅ Reliable – ✅ Experienced – ✅ Affordable If you’re looking for someone dependable and skilled, don’t hesitate to get in touch today!
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Latest review:
Handyman- 15 Aug 2025
Arrived at the agreed time Had all the appropriate tools Completed the work quickly and efficiently and for the agreed price Sava was very polite and hard working
Kingston build
Rating: 5 out of 5
Extension Builder in Marlow
I have been working in the construction industry for over 25 years working in all aspects of the building trade from small projects to large builds
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Latest review:
Extensions- 18 Sep 2020
Work is ongoing and to date we are very satisfied with how Dale and Matt are progressing. The site is kept clean and tidy with all excavation, concrete footings and drainage work completed so far. Workmanship has been excellent. Final feed back to follow on completion.
D. Wallace Building Services
Rating: 5 out of 5
Extension Builder in Marlow
Hi, I'm Dave, a carpenter by trade with over 40 years experience In the building trade. I have a network of professional tradespeople I can call on which enables me to undertake any small repair jobs, medium sized jobs, like kitchens and bathrooms, right through to extensions and loft conversions . I have worked as a site manager and project manager in the past, so l have experience with Building Control, Planning Depts as well. I also make furniture and bespoke carpentry items.
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Latest review:
Carpentry- 15 Nov 2023
Great service! David responded promptly and came out to review/measure up and provided a good quotation. Our window sills were installed within the week and we are very pleased with how it went. David was communicative, got on with the work and cleared up after. Would highly recommend.

4.2

Top rated Extension Builders

Our Extension Builders in Marlow, are rated 4.2 out of 5 based on 10 reviews from customers like you.

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

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 Marlow 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 Marlow who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Marlow?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Marlow 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 Marlow extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Marlow home extension project is likely to cost.

Find extension builders in Marlow with MyBuilder

Hiring the right extension builder in Marlow 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 Marlow extension builders. Once your job is live, we’ll share it with home extension builders in Marlow who can express their interest.

Step 2: Compare different extension builders in Marlow

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

Step 3: Hire Marlow extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Marlow, 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.

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

What to ask a Marlow extension builder before hiring?

Before hiring an extension builder in Marlow or extension building company in Marlow, 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 Marlow?

An extension builder in Marlow 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 Marlow 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 Marlow?

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 Marlow 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 Marlow 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 Marlow

Can an extension builder in Marlow help with planning permission?

Yes, many extension builders in Marlow 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 Marlow handle everything from design to construction?

Many Marlow 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 Marlow help with materials and finishes?

Yes, most extension builders in Marlow 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.