A garage to utility room conversion creates a laundry and storage room in the garage, usually with a washing machine, tumble dryer, sink and space for coats and boots. The key things are drainage for the appliances, extract ventilation, enough power and walls and floor that stay dry. It is often done as a part conversion, keeping the front of the garage for storage. Whether Building Regulations approval is needed depends on the work, so we check with you and building control at the start.
Why put a utility room in the garage?
In many Liverpool homes the washing machine lives in the kitchen, the dryer sits wherever it fits and wet coats hang in the hall. A garage next to the kitchen or at the back of the hall is an obvious place to move all of that. Many people already have the washing machine in the garage on a cold concrete floor, with a hose running into a gully, and want to make it a proper room. Freeing up kitchen space this way can also make the kitchen itself easier to plan.
A utility is one of the smaller jobs within a full garage conversion but it brings together water, waste, power and ventilation, so the planning still matters.
Whole garage or part conversion?
Most utility rooms do not need the whole garage. A common layout keeps the front section, behind the existing door, for bikes, tools and garden furniture, and builds a utility room at the back with a door into the house. Our part garage conversion page explains how the dividing wall is built and what it needs. Some families use the back of the garage for a utility and a downstairs WC side by side, which our garage shower room or WC page covers.
Others take a different approach, using part of the garage to extend the kitchen and the rest as a utility. See our garage kitchen extension page for that option.
What a utility room needs
| Item | What it needs | Who does it |
|---|---|---|
| Washing machine and sink | Hot and cold supplies, a trapped waste with a fall to the drains | Plumber; new drainage approved under Part H |
| Tumble dryer | A vent duct to outside for a vented dryer, or space and airflow for a condenser or heat pump model | Planned with the wall build-up |
| Extract fan | Mechanical extract to deal with steam and moisture | Registered electrician |
| Power | Sockets for appliances, often on dedicated circuits, plus lighting | Registered electrician, Electrical Installation Certificate |
| Floor and walls | Water-resistant finish, damp-proofing and insulation | Building work to the agreed spec |
Drainage for washing machines and sinks
A washing machine pumps out a lot of water quickly, so the waste pipe needs the right size, a trap and a steady fall to the drains. If the garage is beside the kitchen, the new waste can often join an existing run. If not, a new connection may be needed, and any new drainage falls under Part H. Where a gravity connection is not possible, a pumped waste unit is sometimes used, but check with building control before choosing one. Simply running a hose to an outside gully is not a proper solution for a converted room.
Ventilation, dryers and condensation
Laundry puts a great deal of moisture into the air. In an unconverted garage with cold, single-skin walls, that moisture condenses and leads to mould, rusting tools and damp boxes. A utility room needs an extract fan and, for a vented tumble dryer, a duct through the wall to outside. Insulating the walls, either with a new inner leaf or a framed inner wall with a membrane, keeps the surfaces warm so condensation is far less likely. Our garage wall insulation page explains the choices.
Boilers, hot water and gas
The boiler is often already in the garage. A utility room can be built around it, but the boiler needs access for servicing and its flue must keep the required clearances from windows, doors and vents. If the boiler or gas pipework needs moving, that work must be done by a Gas Safe registered engineer. A radiator can usually be added from the existing heating system so the room does not feel like a garage in winter; see our plumbing and heating page.
Do you need Building Regulations approval for a garage utility?
It depends on what is being done. The Planning Portal says converting a garage, or part of one, into habitable space will normally require approval under the Building Regulations. A utility is not always treated in the same way as a bedroom or living room, but new drainage, notifiable electrical work, changes to the fire separation between an integral garage and the house, and replacing the garage door with a wall can all bring the work under the regulations. We talk it through with you and building control so the right approval is in place, and that paperwork matters when you sell. Electrical work is covered on our electrics for conversions page.
If your garage roof has old corrugated or flat cement sheets, they may contain asbestos. They must be tested by a qualified surveyor and, if needed, removed by a suitably qualified asbestos contractor before work. Please do not drill, cut or break them.
Floors and finishes that cope with water
Garage floors are often below the house level. For a utility you may choose to raise the floor to the house level with a membrane and insulation, or keep a small step where a full build-up is not worth it; building control can advise on what is required for your project. A tiled or vinyl floor with a water-resistant finish, tiled splashbacks and a proper worktop make the room easy to keep clean.
Homes where utility conversions are common
Many inter-war and later semis in Rainhill, post-war homes in Aintree and newer estate houses around Prescot have a garage beside the kitchen, which keeps the plumbing run short. Every house is different, and we confirm the best layout after the visit.
Want the washing out of the kitchen?
Call 07777 659786 or leave your details. Tell us where your garage sits and what you would like in the utility, and our garage conversion specialist covering Liverpool will call you back.
Frequently asked questions
Can I put a washing machine in an unconverted garage?
Many people do, but cold, damp garages are hard on appliances and pipes can freeze in winter. The waste also needs to go to the drains properly rather than through a hose to a gully. Turning the space into an insulated, ventilated utility room solves those problems and keeps the laundry dry.
Does a garage utility room need an extract fan?
In practice, yes. Washing and drying put a lot of moisture into the air, and without mechanical extract it condenses on walls and windows. Building control will confirm what ventilation is required for your room. A vented tumble dryer also needs its own duct to outside.
Can a utility room and downstairs WC share the garage?
Often yes, and it is a popular layout. The two rooms can share a drainage route, which keeps costs down. The WC needs its own extract ventilation and a hand basin, and the new drainage is checked under Part H. Building control will confirm the requirements for both rooms.
Can the boiler stay in the garage if it becomes a utility?
Usually it can, provided there is good access for servicing and the flue keeps its required clearances. If the boiler or gas pipework has to move, a Gas Safe registered engineer must do that work. It is a good moment to check the boiler can also heat any new radiators.
Do I need planning permission for a garage utility room?
The Planning Portal says planning permission is not usually required where the work is internal and does not enlarge the building. Some homes have had permitted development rights removed, often on newer estates. If you are changing the garage door to a wall or window, check with your local planning authority first.