How Much Does a Garden Room Cost in Ireland?
Every garden room is bespoke, so there’s no one-size price. Here’s exactly what shapes the cost — and how to get a clear, no-obligation quote for your build across Dublin & Leinster.
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What Shapes a Garden Room’s Cost
A garden room is priced on what goes into it. These are the things that move the figure up or down — and what we walk through with you on your free site visit.
Size & layout
Footprint is the biggest driver — a compact office costs far less than a large multi-room build with internal walls.
Insulation & spec
A fully insulated, year-round room costs more than a summer-only structure, but it's what makes the space usable every day.
Glazing, doors & windows
Large sliding doors, extra windows and roof lights add light and cost; thermally efficient aluminium systems sit above basic units.
Foundations & groundworks
Ground conditions, levels and access affect the base and prep work needed before the room itself goes up.
Electrics, heating & finish
Sockets, LED lighting, heating and the interior finish are included in a turnkey build — higher-end finishes cost more.
Bathroom or ensuite
Adding plumbing for a WC, shower or ensuite (common in guest rooms) is a notable extra over a single-room build.
Site access
Tight side access, slopes or long carries mean more time on site, which can affect the overall price.
Bespoke design & extras
Custom cladding, covered overhangs, swim-spa shelters, AV and built-in storage are all options that shape the final figure.
Different Rooms, Different Costs
What you'll use the room for changes what drives its price. Explore each room type for the detail.
Is a Garden Room Worth It?
For most homeowners the answer is a clear yes — a garden room is one of the most cost-effective ways to add real, year-round space.
- Adds usable space — and value — to your home
- Faster and less disruptive than a traditional extension
- No ongoing rent for office or studio space
- Built to last and used all year, not just in summer
Most Builds Need No Planning Permission
Garden rooms up to 25 m² and 3 m high are usually exempt from planning permission — so there's no application cost or delay. We confirm the rules for your site during your free visit.
How We Price Your Garden Room
We visit your garden, measure up, and talk through exactly what you want. Then you get an honest, written quote for the finished room — no pressure, no obligation. It's the only way to get a price that's actually yours.
Garden Room Cost Questions
How much does a garden room cost in Ireland?
It depends on the size, specification and finish — every Modern Garden Room is bespoke, so there's no single price. The most accurate way to find out is a free site visit and a clear, written quote with no obligation.
Is a garden room cheaper than a house extension?
In most cases, yes. A garden room is typically faster to build, needs less groundwork and causes far less disruption to your home than a traditional extension.
Do garden rooms add value to your home?
Yes — a well-built, insulated garden room is increasingly seen as a valuable, long-term property upgrade, especially as a home office or extra living space.
Does the price include groundworks and electrics?
We quote a turnkey price that covers design, foundations, the build, insulation, electrics and the interior finish — so the figure you get is the finished room, not a starting shell.
Are there payment or finance options?
Flexible payment options may be available depending on your build — contact us and we'll talk you through what's possible.
Will I need planning permission, and does that add cost?
Most garden rooms up to 25 m² and 3 m high are exempt from planning permission, so there's no application cost. We confirm this for your site during your free visit. See our planning guide for the full rules.
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