Garden rooms in Derbyshire
From a stone cottage in the Hope Valley to a terrace in Matlock or a new estate outside Derby, the room itself is much the same. What changes across Derbyshire is who decides planning, how close to the house you have to build, and what lies under the lawn. Tell us your postcode and we look for a garden room builder who works where you live.
Free matching service, not a building firm. We find you a local garden room builder. How it works
Three Derbyshires, three sets of questions
The county splits roughly three ways for anyone planning a building at the bottom of the garden.
Inside the Peak District
The national park is mostly in Derbyshire, and inside its boundary the Peak District National Park Authority, not the district council, handles planning.
Permitted development still applies, but with two extra limits: nothing between the side of the house and the boundary, and no more than 10 m² of outbuildings in total more than 20 metres from the house.
The Derwent valley and the Dales towns
Cromford, Belper, Milford and Darley Abbey sit in the Derwent Valley Mills World Heritage Site, which runs for about 24 km from Matlock Bath towards Derby. The same two extra limits apply there as in the national park.
Derbyshire Dales is also a radon affected area. If you will spend long days in the room, it is worth checking the radon map and asking the builder how the floor is sealed.
The north-east coalfield
Chesterfield, Staveley, Bolsover and the villages around them sit on the East Pennine Coalfield. Old shallow workings and mine entries are recorded on the Mining Remediation Authority map.
Most gardens are fine, but it is worth a look before the builder chooses between ground screws and a slab.
Who decides planning in Derbyshire
Outside the national park, the district or borough council is the planning authority: Amber Valley, Bolsover, Chesterfield, Derbyshire Dales, Erewash, High Peak, North East Derbyshire and South Derbyshire, with Derby City Council for the city. Inside the park, it is the Park Authority, even where your council tax goes to a district.
Across England, a garden room is usually permitted development if it is single storey, sits behind the house, keeps to 2.5 metres high within 2 metres of a boundary, covers no more than half the garden and is not used for sleeping. Our size and planning guide sets out each limit.
Conservation areas add the side-of-house rule too, and listed buildings lose these rights altogether, so a listed farmhouse needs a planning application for any outbuilding.
Before you choose a spot
- Is the house inside the Peak District National Park or the Derwent Valley Mills World Heritage Site?
- Is it listed, or in a conservation area?
- Does the coal mining map show any recorded features near the garden?
- Will the room be more than 20 metres from the house? In the park and the heritage site, that caps it at 10 m².
- Is it over 15 m²? Then the building regulations may apply, depending on how close it is to the boundary.
Wherever you are in Derbyshire, a local builder can check the rules for your plot and price the room.
Ask for a free quoteTypical prices in Derbyshire
Insulated, double glazed and wired rooms at about £1,600 to £2,000 per m² built. These are regional builder prices, not figures for Derbyshire alone. A guide, not a quote.
| Size | Good for | Typical price |
|---|---|---|
| 3 × 2.5 m | Desk or reading room | £12,000 to £15,000 |
| 4 × 3 m | Office, studio or gym | £19,000 to £24,000 |
| 5 × 4 m | Two uses, or entertaining | £32,000 to £40,000 |
More on garden rooms
- Garden offices
Insulated, wired and ready for video calls.
- Garden rooms in Chesterfield
Studios, gyms, hobby rooms and high-end builds.
- Cost calculator
Size, doors and extras, priced as you go.
Questions from Derbyshire
Do I need planning permission for a garden room in the Peak District?
Often not, but the limits are tighter. Nothing can go to the side of the house, and outbuildings more than 20 metres from it are capped at 10 m² in total. Ask the Peak District National Park Authority if you are unsure. See our size and planning guide.
How much does a garden room cost in Derbyshire?
Built, insulated and wired rooms usually cost about £1,600 to £2,000 per m². A 4 × 3 m room is typically £19,000 to £24,000. Use the cost calculator for your size.
Does stone cladding have to match the house in a national park?
The permitted development rules for outbuildings do not set a cladding rule, but if you need planning permission the Park Authority will look closely at materials and design, and it publishes design guides for building in the park. Read them before you choose the cladding.
Is radon a problem for a garden room?
Parts of Derbyshire, including Derbyshire Dales, are radon affected areas. A garden room is not a house, but if you will use it for long hours, ask the builder about sealing and ventilating the floor.
Get a free quote in Derbyshire
Three steps: where, what and who. It takes a couple of minutes, and a little detail now saves a lot of back and forth later.
This is a free matching service, not a building firm. We find a garden room builder near you and name them to you first. Nobody calls you until you say yes.
Thanks, your enquiry is in.
- Within one working day we will email or call to tell you which garden room builder covers your area.
- Your details reach that firm only if you say yes.
- They visit, look at the spot and give you a fixed price. No marketing from us, ever.