Garden rooms · Castlemartyr
Garden rooms in Castlemartyr
Garden rooms, garden offices and gyms in Castlemartyr, in East Cork, east of Midleton. A small timber cabin is €6,700 to €9,000 room only; a fitted, insulated room is €25,250 to €41,000, VAT included. 29% of people at work in Castlemartyr work from home, 17th of the 34 Cork towns here.
Tell us the job and one vetted garden room company that covers Castlemartyr rings you with a written price.
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- 29%of people at work in Castlemartyr work from home (36% across the county)
- 90%of homes are houses, not flats
- 15%of homes have 4 or more bedrooms
- 1,057 mmof rain a year, 30th wettest of 34
Who builds here
Garden rooms and homes in Castlemartyr
29% of people at work in Castlemartyr work from home, below the 36% across Cork. A garden room works as a gym, a playroom or a studio as well as an office.
90% of homes are houses and 66% are owner-occupied, close to the county pattern.
63% of homes were built in 2001 or later. Newer estates often have smaller, squarer gardens: check the 25 m² of open space before you pick a size. 15% of homes have 4 or more bedrooms, 34th of 34.
Price guide
What a garden room costs in Castlemartyr
Room-only prices are the building delivered and put up. Fitted prices are ready to use.
A small timber cabin is €6,700 to €9,000 room only. A fitted, insulated 12 to 16 m² room is €25,250, VAT included. Fitting, travel and the base are priced locally by the company that covers the town.
| Job | Typical cost | What moves the price |
|---|---|---|
| Small timber cabin, 3 × 2 m to 3.4 × 2.5 m, room only | €6,700 to €9,000 | Wall thickness and glazing. Base and power extra |
| Garden office kit, flat pack | €5,600 to €16,798 | Model and size. Fitting, base and power extra |
| Timber cabin, 4 × 4 m to 5 × 5 m, room only | €13,500 to €17,500 | Size, doors and windows |
| High-spec eco room, 3 × 3 m to 4.2 × 4.4 m | €13,420 to €21,330 | Better glazing, doors and insulation |
| Insulated, fitted garden room, 12 to 25 m² | €25,250 to €41,000 | Size. VAT included, ready to use |
| Large garden room, over 5 × 5 m | €17,000 to €51,000 | Spec and size. Over 30 m² in total needs planning |
Weather
Rain in Castlemartyr
Castlemartyr gets 1,057 mm of rain a year, one of the drier towns in Cork (5th driest of 34). The usual spec is fine: an insulated room, a sound roof, and gutters.
Average rain each month in Castlemartyr, 1991–2020: our mean of Met Éireann's 1 km grid around the town. May to September highlighted.
Planning
Planning in Castlemartyr
Castlemartyr is in the Cork County Council area. The rules are national, under Class 3:
- Behind the house. Nothing built forward of the front wall.
- 30 m² in total. The garden room plus any shed, garage or greenhouse already there. It was 25 m² before 27 July 2026.
- 25 m² of garden left to the back or side.
- Height. 3 m with a flat roof, or 4 m with a tiled or slated pitched roof.
- Finish. A structure to the side of the house matches the house.
- Use. Not lived in or slept in, and only for the enjoyment of the house: an office, gym, studio or playroom.
Not sure a room is exempt? Ask Cork County Council for a section 5 declaration: its answer in writing.
Free quote
Get a garden room price in 4 taps
Tap what you want and leave your number. It goes to one vetted garden room company that covers your part of Cork, and they ring you back to arrange a look and a written price.
Questions
Castlemartyr questions
How much is a garden room in Castlemartyr?
A small timber cabin is €6,700 to €9,000 room only. A fitted, insulated 12 to 16 m² room is €25,250, VAT included. Fitting, travel and the base are priced locally by the company that covers the town.
Do you cover Castlemartyr?
Yes. Requests from Castlemartyr and around it go to one vetted garden room company that covers Castlemartyr.
Do I need planning permission for a garden room in Castlemartyr?
Not if it fits Class 3: behind the house, 30 m² in total, 25 m² of garden left, 3 m high with a flat roof, not lived in. For a definite answer, ask Cork County Council for a section 5 declaration.
Is a garden office worth it in Castlemartyr?
29% of people at work in Castlemartyr work from home. If you're one of them and the house has no spare room, an insulated, wired room at the end of the garden is the usual answer.
Who will ring me?
One garden room company that covers Castlemartyr. Not a list, and not five firms. Nothing is agreed until you accept a written price.
Get a free quote for your garden room in Cork
One vetted company that covers your part of Cork rings you. Nothing is agreed until you accept a written price.