Trusted garden room specialists in portland, weymouth & dorset
WHY CHOOSE US
- Expert craftmanship with premium insulation for year-round comfort
- Custom designs to suit your unique needs and garden space
- Locally trusted with satisfied customers across Portland, Weymouth & Dorset
- Energy-efficient solutions built to withstand Dorset’s climate
- Transparent pricing from start to finish

Looking for extra room to work, rest, or play? We’ve got you covered.
Transform your outdoor space with high-quality, fully insulated garden rooms tailored to your lifestyle. Whether you’re looking for a peaceful garden office, a creative studio, or a stylish garden retreat, Portland Homes & Garden Rooms deliver bespoke garden rooms designed and built to the highest standards across Portland, Weymouth, and the surrounding Dorset areas.
Connect with us:
Services
Insulated garden rooms






Working from home
We build fully insulated home offices however big (or small) you’d like, to fit the space you have. Free up the spare bedroom, clear the clutter from your kitchen table, and get that much-needed home/work separation with a home office from as little as £3,500.
Extended living
Our timber-frame extensions are made to building regulation standard and finished in your choice of cladding. A quicker and cheaper way to make more room for growing families, we can do everything you need in-house and within your budget.

Hassle-free garden rooms
There’s no planning permission involved, no mess, and no DIY required. We take care of everything in our Portland workshop, and assemble your garden room for you when its ready. We even take care of lighting and electrics. All you need to do is plug it in.
Multi-use spaces
Lifting weights, pints, or both? However you choose to let your hair down, we’ve got you covered. We have built and designed garden gyms, bars, games rooms, hideouts, craft rooms, yoga studios and much more. Check out our recent work for inspiration…
TESTIMONIALS
Professional
I cannot fault Mike and his team. Professional, tidy and lovely to have around. Communication was excellent and the finished garden room is amazing!
Rhian
Weymouth
Value for money
Mike was polite and respectful from the off and reasonably priced. I would definitely contact him again for further work and recommend him to anyone.
Martyn
Portland
High quality
A great experience from start to finish. Mike really has enthusiasm for his work and takes care to ensure a high quality job. The work speaks for itself. Would highly recommend.
Steve
Portland
FAQs
How much does it cost?
We offer a number of standard builds and bespoke options for garden rooms. Our prices start from £3500.
Is installation included?
All our garden rooms are priced to include installation at your property. Not a flat pack in sight.
Do we need planning permission?
In most cases, garden rooms are considered as outbuildings, which means you will not need planning permission.
Will it be warm enough in the winter?
All our garden rooms have a minimum of 50mm insulation with an additional foil blanket, which also provides a vapour barrier. This means your garden room will retain heat without getting damp.
Does the price include lighting and electrics?
Our price includes everything within the build; sockets and lighting. The only additional cost is the electricity source.
Do I need a base?
You will need a level base for your garden room. This can be concrete that you already have in place, or our environmentally friendly ground-screw option for grass. This will be an additional cost if required.
Can I choose my doors and windows?
We offer a number of options for windows and doors to suit your requirements and budget.
What colour cladding can I have?
You can choose from a range of colours and finishes for your garden room exterior. These are available to view at our showroom in Portland.
APPOINTMENT
Get your free consultation today
Ready to enhance your home with a beautiful garden room? Contact Portland Homes & Garden rooms for a free, no-obligation consultation and discover how our garden rooms can add space, value, and enjoyment to your Dorset home.
