At J M A Group, we design, manage and build high-quality home extensions across West Midlands, helping homeowners transform their existing properties into larger, more practical and better-designed homes.
Whether you’re considering a single-storey extension, double-storey extension or wrap-around extension, our experienced construction team can manage your project from the initial concept through to completion.
Our approach brings the key stages of your project together under one coordinated service, including design, planning, structural requirements, construction management and the building works themselves.
See Our Work
A closer look at recent J M A Group builds from groundworks to finished space.
Our approach is built around:
1. Design & Construction Under One Service
We can coordinate the journey from the early design stages through to physical construction.
2. Construction Management
Your project is managed rather than simply handed to individual trades.
3. Defined Scope of Works
We believe a detailed scope is essential to establish what is included within the agreed works.
4. Stage Payment Structure
Projects can be structured around defined construction stages rather than relying on unclear payment arrangements.
5. Quality Control
The works are monitored throughout the construction process with defects and outstanding items addressed as the project progresses.
6. Professional Communication
A clear communication structure helps prevent conflicting instructions between homeowners, trades and contractors.
7. One Team for Larger Renovations
If your extension forms part of a wider home renovation, we can discuss incorporating additional works into the overall project.
Tell us about your property, the extension you're considering and what you want to achieve.
We discuss your requirements, priorities, budget and potential options.
The existing property and proposed construction area are assessed.
Where required, drawings, structural information, planning and Building Regulations requirements are developed.
The construction requirements are defined and an appropriate quotation and scope of works prepared.
Once everything is ready to proceed, the project moves into the construction phase.
Construction is coordinated through the relevant stages with communication between the project team, trades and client.
The works progress through finishing, snagging and completion in accordance with the agreed project scope.
1. Single-Storey Extensions
Perfect for creating open-plan living spaces, extended kitchens, or dining areas. A single-storey extension is a cost-effective way to add light, space, and value to your home.
2. Double-Storey Extensions
Need even more room? A double-storey extension gives you additional living space downstairs while creating new bedrooms, bathrooms, or a home office upstairs. This option maximises your property’s potential.
3. Rear Extensions
Ideal for expanding kitchens or creating a larger lounge area, rear extensions are popular for those who want to integrate indoor and outdoor living.
4. Side Return Extensions
Transform unused alleyways or side space into a practical and stylish area. Side returns are especially beneficial in terraced or semi-detached homes.
5. Wraparound Extensions
Combine side and rear extensions to completely reshape your ground floor layout. A wraparound extension is perfect for families who want a versatile, modern living area.
6. Kitchen Extensions
Your kitchen is the heart of the home, so it deserves room to breathe. A kitchen extension gives you space for a bigger cooking area, a proper dining spot, or both. It’s one of the most popular ways to update your home without moving house.
7. Open-Plan Kitchen and Living Extensions
Want your kitchen, dining, and living space all in one? An open-plan extension knocks down the barriers between rooms. It’s great for entertaining, keeping an eye on the kids, and making your home feel bigger and brighter.
8. Utility and Boot Room Extensions
Tired of coats and shoes taking over your hallway? A utility or boot room extension gives everyday clutter its own home. It keeps your main living areas tidy and adds handy space for laundry, storage, and muddy boots.
9. Additional Bedroom Extensions
Growing family? Need a guest room? An additional bedroom extension adds valuable living space without the hassle of moving. It’s a smart way to boost both comfort and property value.
10. Home Office Extensions
More of us are working from home these days. A dedicated home office extension gives you a quiet, separate space to focus, away from the noise of daily life. It’s a simple upgrade that makes working from home actually work.
EXCELLENT
Based on 33 reviews
Posted on Google![]()
Sam RichardsTrustindex verifies that the original source of the review is Google.
I recently had an initial visit with Sunnie from JMA regarding my planned single-storey wrap-around extension. Although the visit had to be rearranged twice due to unforeseen circumstances, this was handled in a timely and professional manner. When Sunnie came out for the initial visit, he took the time to listen to my vision for the project and we discussed various options, including planning, design, materials, timescales and costs. He was professional, friendly and accommodating to my suggestions, while also being very solution-focused and offering practical ideas. He provided an overall estimated cost for the build and even offered me a discount as a Blue Light Card holder, which was a really welcomed gesture. Following the initial visit, I have decided to go ahead with Sunnie and JMA for my project. I feel confident in my decision and am really looking forward to seeing my plans come together over the coming months.Posted on Google![]()
Harry SinghTrustindex verifies that the original source of the review is Google.
We Were visited by sunny today to have a look at our bathroom refurbishment, He fully explained the whole process from start to To finish, Provided numerous appropriate options, To make the bathroom more accessible and fit for purpose, The visit wasn’t brief either And wasn’t in a rushwhich was appreciated by my mother, As it can take some time, Topher, the understand the whole process The quotation provided was also good. I do look forward to popping over to the showroom in due course to finalise. Excellent Customer ServicePosted on Google![]()
Sadia JahanTrustindex verifies that the original source of the review is Google.
Had Sunnie cone out today to discuss a kitchen extension. He is a very friendly, polite, professional person. Very knowledgeable and gave sound advise on what may or may not work in our property. Appreciate he took time out to discuss in depth what we want to achieve and what the company can do to help us. Showed us all the certificates etc. Left us feeling confident. ThanksPosted on Google![]()
life with RosanTrustindex verifies that the original source of the review is Google.
I would like to say a big thank you to JMA Group, that takes care of my kitchen extension. I would like to say a big thank you to my side Manager Mani to Michael and is team for the Building work and to kush on is team for the interior work. I would highly recommend this company to anyone looking to do their extension or building work. I am very happy with the job there I’ve done. RosanPosted on Google![]()
Monika Badera-KruszkaTrustindex verifies that the original source of the review is Google.
Excellent service. Sunnie came to provide a quotation and was extremely knowledgeable. He took the time to explain everything in detail, answered all of our questions, and made the whole process easy to understand. He was very professional, honest, and approachable, which gave us a lot of confidence. From the first meeting, we felt we were in good hands. I would highly recommend this company to anyone looking for reliable and professional service.Posted on Google![]()
sannah JavidTrustindex verifies that the original source of the review is Google.
Sunnie came down promptly to give a quote. He worked with my budget which was my main concern and a high priority for me. Seems very professional and happy to make tweeks and changes and listened to all my ideas which lead us to go over the consultation time by a mile. Haven’t started the work yet but happy with the Sevice till now.Posted on Google![]()
Wasim SarwarTrustindex verifies that the original source of the review is Google.
Project manager Waseem helpful and good communication Rectified any issues found quickly Thank youPosted on Google![]()
Atif SarwarTrustindex verifies that the original source of the review is Google.
Sunnie from JMA Group visited us and explained the entire extension process in great detail. He provided different options along with estimated costs on the same day. He appeared very professional throughout. He also mentioned that they build new houses and offer an NHBC warranty. This was our first meeting with them, and if we agree on the pricing, we look forward to working with themPosted on Google![]()
Fatima SatvilkerTrustindex verifies that the original source of the review is Google.
We had Sunnie come out for the consultation. He was extremely knowledgeable and went in depth with all his answers. Helped us to understand the project and what possibilities we have available. He made the consultation very personal and comfortable.Posted on Google![]()
Jag BadyalTrustindex verifies that the original source of the review is Google.
Amazing work by Sunnie and the JMA team. Definitely worth the money and has added value to my house
Not necessarily. Some residential extensions may be possible under permitted development rights, while others require planning permission. This depends on the property, extension dimensions, location, previous alterations and other restrictions. The correct planning route should be established for your individual property.
In most cases, extension construction will need to comply with Building Regulations. These cover technical requirements such as structural stability, thermal performance, ventilation, drainage and fire safety.
If your project involves structural alterations, steel beams, large openings or other load-bearing changes, structural engineering input will commonly be required.
Yes. Kitchen and open-plan living extensions are a major part of residential extension work. The extension can be designed around the proposed kitchen, dining and family layout.
Yes. J M A Group provides a coordinated design, management and construction service, with the exact responsibilities established within your project scope.
Yes. Combining an extension with a renovation can be an efficient way of transforming the entire property. This could include internal alterations, kitchens, bathrooms, electrical works, plumbing and finishing works depending on your requirements.
Timescales vary considerably depending on the size, complexity, approvals, structural requirements and specification of the project. A realistic programme should therefore be developed around the actual scope rather than using a generic timeframe.
Your home may already have everything you need – except enough space.
A well-designed extension can create a larger kitchen, additional bedrooms, better family accommodation and a completely different way of living within your existing property.Whether you’re planning a single-storey rear extension, double-storey extension, kitchen extension or large wrap-around extension, J M A Group can help you take the project from an initial idea through design, management and construction.