Garden room cost in Ireland 2026: real prices from €5,400 to €50,000+
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There's no official price index for garden rooms in Ireland, so the honest answer is a range, and it's wide. Below are published 2026 prices from two Irish suppliers at opposite ends of the market, so you can see what changes the price. They're examples, not recommendations: get your own quotes.
Two ends of the market
Insulated timber garden rooms (from €5,400 incl. VAT)
Jeszara, a Kildare timber building supplier, publishes these prices including delivery, installation and VAT:
| Size | Standard | Deluxe |
|---|---|---|
| 8 × 8 ft (about 5.9 m²) | €5,400 | €8,800 |
| 10 × 10 ft (about 9.3 m²) | €6,700 | €11,200 |
| 12 × 12 ft (about 13.4 m²) | €8,950 | €14,950 |
| 16 × 14 ft (about 20.8 m²) | €12,850 | €21,450 |
That works out at roughly €620 to €910 per m² for Standard and €1,030 to €1,480 per m² for Deluxe (bigger rooms are cheaper per m²). Standard has floor insulation, PVC double doors and two windows; Deluxe adds full wall, floor and ceiling insulation, a lined interior, electrics and a laminate floor. The concrete base and the power connection from the house are extra.
Bespoke turnkey garden rooms (from €24,000 plus VAT)
Modern Garden Rooms, a Dublin builder, publishes turnkey starting prices excluding VAT:
| Room | Size | From (plus VAT) |
|---|---|---|
| Compact garden office | 10–15 m² | €24,000 |
| Standard garden room | 15–25 m² | €32,000 |
| Large or multi-room build | 25–30 m² | €50,000 |
| Garden home (one or two bedrooms) | up to 45 m² | €90,000 |
Its guide rate is €2,000 per m² plus VAT, and the price includes design, foundations, aluminium doors and windows, electrics, heating and a plastered, finished interior. Plumbing for a WC or kitchenette is extra.
Both sets of prices were checked on 18 October 2026 and are the suppliers' own figures.
What makes the difference
- Insulation and use: a room you'll use as an office all winter needs full insulation, heating and electrics. That's most of the gap between the two ends above.
- What "installed" includes: some prices cover only the building; others include the base, electrics and finishes. Ask for a written list.
- Base and groundworks: a level concrete slab or screw-pile base, and harder ground or poor access, cost more.
- Electrics: connecting the room to your house needs a registered electrician, and a long cable run to the end of the garden adds cost.
- Glazing: large sliding doors and extra windows add light and cost.
- Plumbing: a WC or kitchenette is a big jump in cost (and see the planning note below).
Planning permission: the 30 m² rule
Since 27 July 2026, a garden structure such as a shed, garden room or home office is exempt from planning permission if it's up to 30 m² in total (up from 25 m²), at the back or side and not in front of the building line, up to 4 m high with a pitched tiled or slated roof or 3 m with any other roof, leaves at least 25 m² of open space, and is not lived in or used commercially (Citizens Information).
A garden room can't be used as a bedroom under that exemption. The separate new exemption for a detached garden home (32 to 45 m²) allows a habitable home, with stricter conditions: you must live in the main house, notify the council 14 days before, have no separate utility connections, and never sell it separately or use it for short-term letting. It must also meet building regulations for a dwelling, which affects the cost. Full details are in our planning exemptions guide.
Protected structures and homes in architectural conservation areas have extra restrictions.
Before you buy: a checklist
- Measure the space, including the 25 m² of garden you must keep, and check the height limit for the roof type.
- Get at least three written quotes listing the base, electrics, insulation (walls, floor and roof), doors and windows, interior finish and warranty.
- Ask who does the base and electrics and whether they're in the price.
- Check the electrician is registered and that you'll get a completion certificate for the electrical work.
- Think about heating and damp: a small, well-insulated room is cheap to heat; a poorly insulated one can get condensation in winter.
FAQs
How much does a garden room cost in Ireland? From about €5,400 including VAT for a small insulated timber room, installed (base and power extra), to €24,000 plus VAT and up for a turnkey insulated office, based on two Irish suppliers' published 2026 prices.
How much is a garden room per square metre? Published 2026 prices range from roughly €620 per m² including VAT (a basic insulated timber room) to €2,000 per m² plus VAT (a turnkey, fully finished room).
Do I need planning permission for a garden room? Usually not, if it's 30 m² or less in total, behind the front building line, within the height limits, and not lived in or used commercially.
Can I put a bathroom in my garden room? The structure can have plumbing, but it still can't be lived in under the garden structure exemption. A habitable garden home needs to meet the separate 32 to 45 m² exemption or get planning permission.
Sources
All checked 18 October 2026.
- Jeszara Timber Products, Garden room prices Ireland 2026 (supplier's published prices)
- Modern Garden Rooms, Garden room cost in Ireland (supplier's published prices)
- Citizens Information, Planning permission for altering your house