Extension Builders in Harwich

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3 (2 reviews)

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Some of our top rated extension builders in Harwich

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James Hardman Construction
Rating: 4.7 out of 5
Extension Builder in Harwich
At james hardman construction we Carry out all building works to a very high standard, customer satisfaction is our main target
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Latest review:
Groundwork & Foundations- 30 Aug 2018
Very pleased with Darren and his team. Arrived on time and worked extremely hard. Very polite and explained what had to be done and kept us informed throughout. Can certainly recommend Darren.
RAPitt
Rating: 5 out of 5
Extension Builder in Harwich
I have been a painter and decorator and builder for 40 years and worked on many different projects.The variety of my work and experience over the years has given me the ability to handle all sides of a project large or small. I am hard working, a very clean worker, honest and work to a high standard. Im an everyday family man with three children and find great joy not only in my family but also in my work and seeing the client pleased with the finished article is very satisfying.
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Latest review:
Kitchen Fitting- 12 May 2024
Excellent completed with no trouble. Very pleased with the job, good value and finished to a lovely standard. Happy to recommend Roger and will use again for sure.
GMG Brickwork
Rating: 5 out of 5
Extension Builder in Harwich
We have been bricklaying for over 12 years now, enjoy everything about building, we undertake garden walls, repairs/repointing and brick cleaning etc no job to small
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Latest review:
Gary and his work colleague completed a small garden wall for me with a detailed brick on edge. The work was great quality with great rates and would highly recommend to anyone needing any building work.
A parr
Rating: 5 out of 5
Extension Builder in Harwich
Over 30 years in the glazing and building industry , no job to big or to small ,
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Latest review:
Windows & Doors (uPVC & Metal)- 22 Nov 2019
Andy fixed our back door that required quite a few adjustments to align the locks perfectly. Very friendly manner and arrived and finished in good time. Would definitely recommend.
Moore brickwork
Rating: 5 out of 5
Extension Builder in Harwich
Small local business with years and years of experience mainly in bricklaying but also have good knowledge and experience in other fields such as knock throughs driveways patios fencing and most building related work. We pride ourselves of quality of work and customer relationships.
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Latest review:
Great team to work with . Professional, prompt and nothing was a problem Communication was excellent A pleasure to work with and look forward to working with them again
LF. Roofing & building services
Rating: 5 out of 5
Extension Builder in Harwich
With over 14 years experience in the trade we cover all types of work inc Roofing, Lead work, Property maintenance, Landscaping, Driveways, patios, extensions, alterations and diy jobs. All works are guaranteed. Pride is taking in my work and finished to the highest of standards as I believe building up a clientele is the best way to run a business, the clients are a great way to show others that we can be trusted and reliable.
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Latest review:
Landscaping- 12 May 2020
Very pleased with the out come of the work carried out for me, patio,plus path laid down side of the conservatory and shingle path the other side, very pleased at a professional job.
KD Coastal Bathrooms
Rating: 4.7 out of 5
Extension Builder in Harwich
Very clean and tidy worker with an eye for detail. I only like to get things right, not nearly right. I also fit wet rooms for disability and elderly people with altro non slip flooring, all types of showers fitted, plumbing repairs. Any electrics will be carried out by a qualified electrican.
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Latest review:
Bathroom Fitting- 3 Apr 2026
You won’t meet a more conscientious and capable builder than Kevin! He really cares about doing things ‘the right way’ and his craftsmanship shows. I had an office converted to a bathroom and the results are stunning! I’m so happy. I then recommended him to my neighbour and she to her mother and daughter! He’s a gem. 2 days after the bathroom was finished he was back here building a pergola. I couldn’t be happier.
JAB Carpentry
Rating: 4.3 out of 5
Extension Builder in Harwich
Carpenter/construction with over 25 years of experience. Ive worked on many different sorts of projects luxury one off houses, schools,hospitals, shop fitting, church restorations, Oak framing Etc Etc. I have a great passion for what i do and have much pride in what i do.
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Latest review:
Hard Flooring- 30 Jan 2024
Great work by Jason to replace all our creaky upstairs floorboards. Arrived on time, worked hard all day and left place very clean at end of day. Over 4 days he was here he was unfailingly polite and did a great job even when faced with the shoddy work done by previous builders 12 years ago that he had to deal with. Highly recommended. Thank you.
Wood worx carpentry & Kitchens Limited
Rating: 5 out of 5
Extension Builder in Harwich
We are a carpentry and building company accredited by the FMB, NABC and BIKBBI.
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Williams installations
Rating: 5 out of 5
Extension Builder in Harwich
Local builder will undertake any job big or small
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Latest review:
Bathroom Fitting- 5 Aug 2026
William exceeded our expectations with both the bathroom renovation and the new washing machine connection install. He handled the complex plumbing for the washer hookup with total expertise, and everything works flawlessly now. On top of his skill, he was incredibly tidy, punctual, and respectful of our home. The finished bathroom looks fantastic, and the new connection is seamless. We highly recommend William for any plumbing or renovation work!
instant living space ltd
Rating: 5 out of 5
Extension Builder in Harwich
My name is Keith Barns, and i am introducing my company Instant Living Space Ltd. We are a construction company that for 12 years works in both the commercial and residential sector. We complete all types of building work from new extensions, garden rooms. property refurbishment. External cladding etc. We complete work all over Essex. We also have a whole list of previous clients that we can give as references who would me more than happy to here from any perspective clients. Kindest Regards Keith Barns (Company Director)
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Latest review:
Conversions - General- 4 Mar 2025
Highly recommend Keith and his team they were fabulous from start to finish, clean and tidy, great price, very professional, great workmanship and gave some great ideas throughout the building work to make it look perfect. Thank you !
Essex and Suffolk Plastering
Rating: 4.9 out of 5
Extension Builder in Harwich
About Us Essex & Suffolk Plastering is a trusted and professional plastering company dedicated to delivering high-quality craftsmanship across Essex, Suffolk, and nearby regions. With years of industry experience, we pride ourselves on providing top-tier plastering and rendering solutions for residential and commercial clients alike. Our Services We offer a comprehensive range of services, including: Plastering: Traditional and modern plastering techniques for smooth and durable finishes. Rendering: External wall rendering, including silicone, monocouche, and traditional sand & cement. Dry Lining: Efficient and precise dry lining solutions for interior walls and ceilings. Skimming: High-quality skimming services for a flawless finish. Ceiling Repairs & Replacement: Restoring damaged ceilings to their original condition. Damp Proofing: Preventative solutions to protect your property from moisture damage. Why Choose Us? Expertise & Experience: Our skilled team has extensive experience in all aspects of plastering and rendering. Quality Workmanship: We use only the best materials and techniques to achieve outstanding results. Customer Satisfaction: We prioritize client needs, ensuring timely project completion and minimal disruption. Competitive Pricing: Offering high-quality services at affordable rates. Fully Insured & Accredited: Giving you peace of mind with professional and reliable service. Our Clients We cater to a wide range of clients, including: Homeowners Property Developers Builders & Contractors Commercial Property Owners Landlords & Estate Agents Contact Us For a free quote or consultation, get in touch with us today At Essex & Suffolk Plastering, we are committed to excellence in every project we undertake. Whether it's a small repair or a full-scale renovation, we deliver impeccable results that stand the test of time.
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Latest review:
Plastering- 22 May 2026
Job not completed. Despite agreed terms, four separate reasons (excuses) given for delays/non attendance. IE, Bank Holiday, Brake Failure, Serious van repairs needed and lastly, Family Bereavement. Bad Luck(?), was for me! Shop elsewhere.
Nielsen Building Contractors
Rating: 5 out of 5
Extension Builder in Harwich
We are a professional building contractor based in Ipswich. We cover a wide range of building work. From full landscape related projects (patios, driveways, ponds, turfing, fencing, decking, pergolas) to new builds and extensions. Small jobs, silicon a bath no problem we cater for that too. Whatever your requirement we will have a friendly qualified tradesperson for the job. Our goal is to bring your vision to reality. Feel free to contact us for a discussion and free quotation.
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Latest review:
Landscaping- 19 Sep 2021
I wouldn’t hesitate to recommend these guys. Friendly and professional with great communication throughout the job. Very happy customers. Thank you Shane and Jack :-)
S.A.S Building Services ( Simons & Sons
No reviews yet
Extension Builder in Harwich
S.A.S (Simons and Sons) proudly opened in January 2021 and we are a family run building company with 25 years experience in building services and construction. We pride ourselves on high quality work and attention to detail regardless of the job size, we can offer professional guidance from concept to completion. Our experience ranges from working on properties from 16th century to modern day builds. We strive to take care every step of the way to ensure restoration and preservation regardless of the age. All building works undertaken from home building, extensions, renovations and refurbishments. Bespoke driveways and patios, fencing as well as landscaping and heavy ground works. Working Together We offer the best possible professional guidance, project planning, execution and quality finishes at the smaller end of the domestic market. Why Choose Us? 25 years of experience working under the corporate contractors, Jacksons, SEH, Brooks & Wood and Boot Construction,
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Jkl
Rating: 5 out of 5
Extension Builder in Harwich
Hi keith here We specialize in providing a wide range of fencing services, from minor repairs to complete replacements.we cover all aspects of groundwork including paving driveways drainage footing and can help with all your needs With over 30 years of experience in the trade, we guarantee top-notch workmanship and offer a guarantee on most of our services. Our family-run business has built a strong reputation based on referrals, and we take pride in delivering exceptional service to our customers. In addition to fencing , our team includes qualified tree work and roofers external painters, allowing us to handle all aspects of property maintenance. Please get in touch for a free quotation
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Latest review:
Handyman- 18 Aug 2026
Erected mobility bike shed. Professional, reasonable price. Very pleasant. Would hire again recommended
Robertson brickwork
Rating: 5 out of 5
Extension Builder in Harwich
Bricklayer with 15 years experience. I love my work and take great pride in everything I build.
Get in touch
Latest review:
Bricklaying- 24 Apr 2021
Jack is a good quality bricklayer and pleasant person. Reliable and reasonable rates. Matched bricks perfectly with remaining wall and left site very clean and tidy. Kept regular updates on availability of goods and fitting dates. Would recommend him.

Top rated Extension Builders

Our Extension Builders in Harwich, are rated 3 out of 5 based on 2 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Harwich?

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

Find extension builders in Harwich with MyBuilder

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

Step 2: Compare different extension builders in Harwich

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

Step 3: Hire Harwich extension builders with confidence

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

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

What to ask a Harwich extension builder before hiring?

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

An extension builder in Harwich 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 Harwich 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 Harwich?

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 Harwich 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 Harwich 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 Harwich

Can an extension builder in Harwich help with planning permission?

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

Many Harwich 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 Harwich help with materials and finishes?

Yes, most extension builders in Harwich 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.