Garage conversions in Roscommon
In Roscommon, converting a single garage costs €14,000 to €23,000 at a standard finish and €19,000 to €28,000 mid-range, VAT included. A mid-range bedroom with its own shower room comes to €29,000 to €46,000. An attached garage at the side or back can be converted without planning permission; for a front or detached garage, ask Roscommon County Council for a section 5 declaration first.
For homes in Roscommon Town, Monksland & Athlone West, Boyle and Castlerea: what converting a garage costs here, the county's houses, its council, and the cost of moving instead.
Free and no obligation. Your plan goes to one builder, not a list.
- €14,000–€23,000standard conversion in Roscommon
- €19,000–€28,000mid-range
- 92%of homes are detached or semi-d houses
- €220,000median paid by movers in Roscommon, 2025
Converting a garage in Roscommon
92% of homes in Roscommon are detached or semi-detached houses: 19,161 detached and 4,694 semi-detached in Census 2022. Those are the houses that most often come with a garage, attached at the side or standing on its own.
50% of Roscommon houses have three bedrooms or fewer, and 35% have exactly three. A garage turned into a bedroom makes a three-bed a four-bed for €19,000 to €28,000 at a mid-range finish here.
People moving home in Roscommon paid a median of €220,000 in 2025, across 292 sales (CSO). On that price, stamp duty, the agent's fee with VAT and the solicitor come to €7,000 to €14,000 before the bigger house costs a cent more, against €19,000 to €28,000 to convert the garage.
Roscommon is priced in Connacht and Ulster. Section 5 requests (€80) and planning applications go to Roscommon County Council.
- 74%of homes are detached houses
- 18%are semi-detached
- 35%of houses have exactly three bedrooms
- 25,121houses in Roscommon (Census 2022)
What a garage conversion costs in Roscommon
| Conversion | All in, Roscommon, VAT in |
|---|---|
| Bedroom, standard finish | €14,000 to €23,000 |
| Bedroom, mid-range | €19,000 to €28,000 |
| Bedroom with a shower room, mid-range | €29,000 to €46,000 |
| Home office or gym, standard finish | €14,000 to €23,000 |
| Granny flat: bedroom, shower room, small kitchen | €34,000 to €56,000 |
| Detached garage office, standard finish (plus the trench) | €14,000 to €23,000 |
| High spec with a shower room | €48,000 to €81,000 |
Every figure is for a single garage, with VAT at 13.5%, rounded to the nearest €1,000. Set aside 12% to 15% more for surprises.
Plan your garage conversion
Four quick taps, and your plan fills in as you answer: the cost in your county, the planning position for your kind of garage and how many weeks it takes. Contact details come last, and only if you want a builder to price it.
An attached garage made into a bedroom in Roscommon, mid-range finish: €19,000 to €28,000, including VAT.
How the estimate is worked out
A garage conversion is priced as one job, because the walls, roof and floor slab are already standing: insulating the floor, walls and roof, building up the door opening with a window, wiring, heating, plastering and the finish. The range for your finish is adjusted to your county the same way building rates move between regions of Ireland, VAT at 13.5% included. A shower room, a small kitchen or a steel beam into the house go on top. Totals are rounded to the nearest €1,000. Use it to plan with. It isn't a quote: a builder prices your garage after seeing it.
Planning in Roscommon
The rules are national. An attached garage at the side or back converts without permission under Class 1 if it isn't made bigger and fits within the 45 m² it shares with every extension since 1964. In Roscommon, section 5 requests and applications go to Roscommon County Council: €80 for a declaration, €34 for an application.
Three things can take the exemption away. A condition in the planning permission your house was built under can remove it, and newer estates often have one. On a protected structure, work that would affect its character isn't exempt. And no conversion is exempt if it would obstruct a public right of way or create a traffic hazard. Planning permission for a garage conversion.
Towns we cover in Roscommon
We pass plans from every part of Co. Roscommon to a builder who works there, including these towns and their Eircode routing areas:
- Roscommon TownF42
- Monksland & Athlone WestN37
- BoyleF52
- CastlereaF45
- BallaghaderreenF45
- StrokestownF42
- ElphinF45
- FrenchparkF45
- Roosky & TarmonbarryN41
- KnockcrogheryF42
What a Roscommon garage can become
Each has its own page: what it costs, the rules that apply to that room, and what to decide first.
Garage to bedroomA downstairs bedroom, with a shower room of its own if the drains allow.
Garage to home officeA room with a door that shuts, away from the kitchen table.
Garage to playroomSomewhere for the children and their things, off the hall.
Garage to granny flatA bedroom, a shower room and a small kitchen for a parent.
Garage to gymA warm, dry room with a floor that takes weights.
Integral and front garagesBuilt into the house or facing the road: check before you start.Roscommon questions
How much does a garage conversion cost in Roscommon?
In Roscommon, converting a single garage costs €14,000 to €23,000 at a standard finish and €19,000 to €28,000 mid-range, VAT included. A mid-range bedroom with its own shower room comes to €29,000 to €46,000. An attached garage at the side or back can be converted without planning permission; for a front or detached garage, ask Roscommon County Council for a section 5 declaration first.
Do I need planning permission to convert a garage in Roscommon?
An attached garage at the side or back of the house can be converted without planning permission under Class 1, as long as the garage isn't made bigger and the conversion, added to every extension built since 1 October 1964, stays within 45 m². A garage at the front, one built into the house facing the road, or a detached garage isn't covered by Class 1: get a section 5 declaration (€80) from the council first, and expect to apply for permission to make a detached garage somewhere to sleep or live. In Roscommon, apply to Roscommon County Council.
Is converting the garage cheaper than moving in Roscommon?
Moving on the Roscommon median of €220,000 costs €7,000 to €14,000 in stamp duty, agent's and legal fees alone. A mid-range garage conversion here costs €19,000 to €28,000.
Which parts of Roscommon do you cover?
All of it, including Roscommon Town, Monksland & Athlone West, Boyle and Castlerea. Your plan goes to a single vetted builder who works in Roscommon.
Who will contact me?
One builder who works in Roscommon and has been vetted, and only that one. They price the job in writing after seeing the garage, and you decide.
Every guide and county page
Conversions
Costs, rules and help
The room you need is already built
Pick the kind of garage, what it becomes and the finish to see the cost in your county. When you want a firm price, your plan goes to a single vetted builder for your area.