A growing family puts real pressure on a house. Rather than starting over somewhere new, many people choose home extensions in Halesowen to get the room they need.
Plenty of Halesowen homes date from the 1960s and 70s, often with attached garages and plain rear walls. These houses usually have good potential for side, rear and over-garage extensions.
We look after design, approvals and construction for you. As house extension builders in Halesowen, J M A Group gives you a written scope, clear pricing and one project manager.
See Our Work
A closer look at recent J M A Group builds from groundworks to finished space.
1. Design & Construction Under One Service
One team covers the drawings and the building work. You won’t be stuck between an architect and a builder who disagree.
2. Construction Management
We plan the build week by week and manage every trade. Your job is to make decisions, not chase people.
3. Defined Scope of Works
Your scope spells out materials, finishes and who does what. You agree it before any work starts.
4. Stage Payment Structure
You pay in stages tied to real progress, like the slab, the roof and plastering. You never pay for work that hasn’t happened.
5. Quality Control
Each stage is checked against the drawings and Building Regulations. We only sign it off when we’d be happy living with it ourselves.
6. Professional Communication
You’ll get honest updates, including when something changes. No vague answers or long silences.
7. One Team for Larger Renovations
Need a refit elsewhere in the house? Our team can handle kitchens, bathrooms and decorating as part of the same job.
Tell us a bit about your house and what you'd like to add. A phone call or our online form is fine.
We sit down and go through your wish list and budget. We'll be upfront about what's realistic.
We visit your Halesowen home to survey the site. We look at levels, drainage, boundaries and any existing extensions.
We arrange drawings and structural calculations as needed. Planning or prior approval and Building Regulations are prepared at this point too.
You get a detailed scope and a price for every part of the job. No round numbers or guesswork.
We agree a start date and walk you through the build order. Then work starts on site.
Your project manager is on site regularly and coordinates the trades. Building control visits are timed to the right stages.
We finish off, fix any snags and leave the site tidy. Then we go round the finished space with you before signing off.
1. Single-Storey Extensions
The most popular way to add ground-floor space. Think bigger kitchens, family rooms and dining areas.
2. Double-Storey Extensions
Add space on both floors in a single project. It’s often the best way to gain a bedroom and a bigger living area.
3. Rear Extensions
Open the back of your home up to the garden. Large glazed doors make the most of the view.
4. Side Return Extensions
Fill in the narrow gap at the side of your house. It can make a cramped kitchen feel far more spacious.
5. Wraparound Extensions
Combine side and rear extensions into one L-shaped space. It gives you a large, flexible ground floor.
6. Kitchen Extensions
A kitchen extension in Halesowen makes room for an island, more worktop and a proper dining table. It’s the upgrade most families feel every day.
7. Open-Plan Kitchen and Living Extensions
Bring cooking, dining and lounging into one connected room. Ideal for families who want to spend more time together.
8. Utility and Boot Room Extensions
Give laundry, wellies and sports kit a home of their own. Your kitchen stops doubling as a utility room.
9. Additional Bedroom Extensions
Add a bedroom without moving house. Great for growing families, guests or a relative who needs to stay.
10. Home Office Extensions
Create a dedicated office away from the TV and the kitchen. Better focus, fewer distractions and proper storage for 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
It depends on the design. Many single-storey rear extensions count as permitted development. Side, two-storey and wraparound extensions usually need full planning permission from your local council. We’ll confirm the route after the survey.
Yes, but stricter rules usually apply. Extensions in the green belt must not be out of proportion to the original house. We’ll check your plot’s status and design to suit.
Yes. Homes from this era often have simple layouts that are easy to extend. Many also have flat-roof garages or porches that can be replaced or built over. We check the existing structure first.
Yes, and it’s a common upgrade. Old conservatories are often too hot in summer and too cold in winter. A solid-roof extension with a lantern gives you a room you can use all year. We’ll check whether the new design needs planning permission.
Not straight away. Your band is usually only reviewed when the home is next sold. Even then, it may not change.
A good extension starts with understanding how you live now: who cooks, where the clutter ends up and which rooms feel tight. Tell us that, and we’ll design around it.
Our extension builders in Halesowen handle single-storey, double-storey, wraparound and kitchen extensions. J M A Group manages the full project, so you deal with one team from start to finish. Book your site survey today.