Garage to home office conversion
A garage converted into a home office costs €15,000 to €25,000 at a standard finish and €20,000 to €30,000 mid-range, VAT included; in Galway, a standard finish comes to €14,000 to €23,000. An attached garage needs no planning application. Plan the sockets, the network cable and the window for daylight before the walls are boarded.
A room with a door that shuts: what a garage office costs, and the light, power and quiet to plan for.
Free and no obligation. Your plan goes to one builder, not a list.
- €15,000–€25,000standard finish
- €20,000–€30,000mid-range
- 2double sockets per desk, at least
- 6–10 weekson site
Plan the office before the walls go up
- Sockets. More than you think: two doubles at every desk, one for a printer, one by the door. Add USB sockets where phones charge.
- A network cable. Run an ethernet cable from the router while the walls are open. Wi-Fi through the old garage wall is often weak.
- Daylight. The window in the old door opening faces the drive; a roof window over the desk gives even light without glare on the screen.
- Quiet. The insulation that keeps the room warm also cuts noise. A solid door to the house and a sealed frame do the rest.
- Heat. A radiator off the house heating with its own valve, or an electric panel heater on a timer if the room is used at odd hours.
A detached garage as an office
A garage at the end of the garden makes a good office because of the distance from the house. Using it as an office that goes with the house can need no planning permission, but power and a network cable have to be run out in a trench, and that adds to the price. If clients will visit, ask the council first: a business with callers is a different use. Detached garage conversions.
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 home office, mid-range finish: €20,000 to €30,000, 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.
What a 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 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.Questions before you convert
How much does a garage office conversion cost?
€15,000 to €25,000 at a standard finish and €20,000 to €30,000 mid-range, VAT included, for a single garage.
Do I need planning permission for a garage office?
Not for an attached garage at the side or back. A detached garage used as an office that goes with the house often needs none either, but check if clients will visit.
Can I claim working from home costs on a garage office?
Revenue's remote working relief covers a share of heat, electricity and broadband on the days you work from home, not the cost of converting the room.
Is a garage office warm enough in winter?
Insulated to today's standard and heated, yes. Uninsulated garages are cold and damp from October to April.
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.