
Garden Room
Caden
Our classic garden room: one bright, open space with wide glazed doors, ready for work or play.
- Home Office
- Gym
- Studio
From£9,411
Garden Rooms, Annexes and Extensions Across Scotland
Offices, gyms, studios, annexes and extensions, built on solid concrete, fully insulated and finished with a one-piece rubber roof. Designed and built by our own team, anywhere in Scotland.
Or call free on 0800 012 5036
Our Ranges and Prices
Every OBG building is designed around your garden, your house and what you need the space for. Start with the one closest to your idea and we’ll shape it from there.

Garden Room
Our classic garden room: one bright, open space with wide glazed doors, ready for work or play.
From£9,411

L-Shaped Garden Room
Two spaces in one L-shaped building, for households that need more than one room in the garden.
From£17,820

Home Extension
A modern extension built onto your house, clad in cedar, composite or brick.
From£12,777

Garden Annexe
A complete annexe in the garden, for family, for guests or for care at home.
From£34,742
Starting prices. Every building is designed and priced to your size and specification after a free site survey.
How We Build
Scottish weather finds every shortcut, so we don’t take any. Pick the weather and see what’s protecting you.
Inside: Warm and Dry
In a Downpour
Every roof is finished with a Firestone rubber membrane laid in one piece, so there are no joins for the rain to find. It needs no maintenance and it keeps the room warm in winter.

Felt and tin roof coverings. They have joins that can leak, and they aren’t made for Scottish weather.
In a Gale
Every OBG room stands on a solid concrete foundation, the same method used for house builds and home extensions. It suits every kind of ground and stays solid and stable in any weather.

Ground screws. Quicker and cheaper, but not suited to every type of ground, open underneath to vermin and often fitted by a subcontractor.
In a Frost
Fully insulated, with plasterboard walls and a painted finish, laminate flooring on foil-backed underlay to keep the cold away and an energy-efficient heater on a 7-day programmer. Built to be used all year round.

Fixed-size, shed-style kits that are poorly insulated and cold in winter.
On a Dreich Day
Our New Zealand and redwood cedar is thermally modified at 230°C to keep the timber stable. It’s virtually knot free, with a low moisture content, and it needs no maintenance.

Siberian larch. It needs treating, it can crack and it carries large knots.
“The first day they arrived it was a lovely frosty day, but then the second day it rained, and it was really really difficult, but having said that they coped admirably.”
No basics left as extras. Every OBG garden room comes with all of this.
Who Builds It
We’re a family-run Scottish company with more than ten years in the industry. Our own tradesmen build your room, and we’re responsible for every part of it.

Customer Stories
Clinics, offices, studios and annexes. A few of the rooms we’ve built for people across Scotland.

Karen, Hamilton
Karen visited our Glasgow showsite, chose a cedar-clad building for her clinic and found the idea for its toilet area there.
It’s a great team of guys, very impressed with the whole company.Read Karen’s Story

Sandra, Aberdeen
Sandra sold her large home in Aberdeen to live near her daughter. We designed her annexe around her wheelchair, with a wider WC door and non-slip flooring, and went from design to handover in six weeks.
Read Sandra’s Story
Pam, Edinburgh
Pam works from home in IT for a city bank. She looked at an extension, but the cost, noise and build time didn’t seem worthwhile. Her 5m by 3m garden office has bifold doors, a corner window and a desk that faces the garden.
Read Pam’s Story
John, Cumbernauld
John needed a place to make music away from the house. His 3m by 3m Caden has our acoustic pack, which isn’t soundproof but reduces sound by up to 45dB, and room for all his recording equipment.
Read John’s StoryHow It Works
Fill in the form or call free on 0800 012 5036. Tell us what the room is for and roughly where it would go.
A design consultant calls you to talk through the size and specification.
Visit a showsite to see the quality for yourself. An estimator then visits your home to measure up, and the site survey is free.
You get a free quote. If you go ahead, our team builds your room, starting with the concrete base.
Showsites
Photos only go so far. At our showsites you can walk into fully finished, furnished garden rooms, open the doors and get a real feel for the sizes and the build quality. The tea, coffee and biscuits are on us.
272 Langmuir Road, Glasgow G69 7RR. Next to Showcase Cinema, just off the M8.
Drop InDeeside Activity Park, A93, Dess, Aboyne AB34 5BD.
Blairgowrie.
By AppointmentStrontian, Acharacle.
By Appointment46 Morningside Road, Edinburgh EH10 4BF.
OfficeOur sales team is in Monday to Friday, 8am to 4pm, and Saturday, 10am to 1pm.
Also From OBG
The same team builds concrete garages and finishes the garden around your room.
FAQs
Can’t see yours? Call free on 0800 012 5036 and ask a real person.
Our ranges start from £9,411 for a Caden garden room, £12,777 for a Kai extension, £17,820 for a Jacob L-shaped room and £34,742 for an Outdoor Living annexe.
Every building is designed around your space, so the price depends on the size and specification. We’ll give you a free quote after a free site survey.
Many garden rooms don’t need it, but it depends on the size and height of the building, where it sits in your garden and your property.
Our in-house architectural technicians will tell you what applies to your plans and guide you through an application if you need one.
That’s what our rooms are designed for. Every one is fully insulated, with plasterboard walls, a painted finish, laminate flooring on foil-backed underlay to keep the cold away and an energy-efficient heater on a 7-day programmer.
Solid concrete, every time. It’s the method used for house builds and home extensions, it suits every kind of ground and it stays solid and stable in any weather. We don’t use ground screws.
A concrete foundation, warm insulation, plasterboard with a painted finish, laminate flooring on foil-backed underlay, double sockets with USB ports, an armoured cable connection to your mains (up to 20 metres), an energy-efficient heater with a 7-day programmer, exterior downlights, six interior spotlights and a Firestone one-piece rubber roof.
Popular extras include composite decking, a skylight, water and waste connections, an internal wall, a wired internet (Cat 6) connection, extra overhangs, hard landscaping and artificial grass.
It depends on the size of the building and the weather on the days we build, so we’ll give you a timescale with your quote. As a guide, Sandra’s annexe in Aberdeen went from design to handover in six weeks.
Yes, and we’d recommend it. Our showsites have fully finished, furnished garden rooms you can walk into. Drop in to our Glasgow showsite, or call to arrange a visit to Aberdeenshire, Perthshire or the Highlands.
If you’re in Scotland, yes. We build across the whole country, from Ayrshire, Dumfries and Fife to Inverness, Fort William and the Isle of Mull.
We do. Our in-house design team draws your room, our own trades build it on site and we’re responsible for every part of it. You’ll have your own direct point of contact throughout your installation.
Every building comes with a 10-year insurance-backed structural warranty.
Free Quote
Tell us a little about your plans. A design consultant will call to talk through the size and specification, then we’ll arrange your free site survey.
Freephone. Monday to Friday 8am to 4pm, Saturday 10am to 1pm.
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