You can turn your garage into a gym by planning the layout and adding the right flooring, lighting, insulation, heating, storage and equipment.
A small garage gym gives you a convenient place to exercise at home. It can save you money on gym memberships, remove travel time and let you work out whenever it suits you.
Below, we answer some common questions before taking you through the process in seven simple steps.
You may not need planning permission if you are simply adding gym equipment to an existing garage. However, permission could be required if you’re building a new garage, changing its use or making structural alterations.
Planning rules depend on the property and the work involved, so always check with your Local Planning Authority before starting.
Your final bill can be as little as the cost of the machines you buy, if you don’t mind working out in the cold and heat.
If the garage also needs insulation, flooring, electricity and heating, a basic DIY conversion could start at around £6,000. A full professional conversion may cost £10,000–£20,000 or more.
These are rough UK estimates for 2026. The final cost will depend on the garage, specification, location and work required, so get quotes based on your project.
Ongoing maintenance costs can add up over time. Read our guide to choosing a low-maintenance timber garage.
It depends on how luxurious you want your at-home fitness studio to be.
Here are some of the items you might want to purchase or install:
Converting your garage into a gym is rather simple and uncomplicated. Below, we cover all the steps necessary to make your outbuilding a comfortable fitness studio you can use year-round.
However, bear in mind that you can skip one or more of these steps to keep your gym simple and affordable.
First of all, you will need to draft a plan for the garage gym, based on your budget. Think about the equipment you want to buy, the space you have available, where to place machines that require electricity to work, and more.
You will be able to amend or define the plan in more detail as you look into the next steps.
Good lighting will make your garage gym safer and easier to use, especially during winter. You may also need power for equipment, heating, fans or air conditioning.
If the garage doesn’t have electricity, ask a registered electrician to check what is needed. They can work out the power your gym will use and whether the garage can be safely connected to your home’s electricity supply.
Electrical work must meet Part P of the Building Regulations in England. Some work may also need to be reported to building control. An electrician registered with a competent person scheme can carry out the work, test it and provide the correct certificate.
Solar panels may be an option, but you’ll need a suitable system for the amount of power you plan to use. Ask a qualified installer for advice, especially if you want to run heating or larger equipment.
For a simple gym without powered equipment, rechargeable lights may be enough. Make sure they are fitted securely and provide enough light for you to exercise safely.
Good insulation helps keep your gym garage warmer in winter and cooler in summer. Depending on how the garage is built, you may need to insulate the walls, roof and floor.
Check for leaks and damp before adding insulation. Covering an existing damp problem can lead to mould and damage later.
Ventilation is also important. Exercise creates heat and moisture, which can cause condensation if fresh air can’t move through the room. Windows, vents or an extractor fan may help keep the space dry and comfortable.
The right materials and installation method will depend on the garage, so ask a qualified professional for advice. Insulated walls can usually be finished with plasterboard or plywood.
Next, you will likely need a way to heat the garage in the winter. Luckily, there are various options to heat up a small building - underfloor heating, portable radiators, convection heaters, electric radiators, and tube heaters. A wood stove could be a nice option, but you would need to light it up well before a workout. A pellet stove requires power to function.
If you want to save some money and avoid installing heating, go heavy on the insulation and mainly buy cardio machines. Rowing, cycling, and running will keep you warmer than lifting weights or doing pull-ups. Many people do cardio workouts outdoors in winter.
If you have a higher budget, consider installing a small AC unit for those summer heatwaves.
Once you know what kind of heating you will use and have installed the insulation, you can lay the flooring.
You will likely have a concrete base in your garage, which makes a solid and flat surface to lay rubber matting or puzzle mat pieces, both of which are practical and hard wearing.
You can now buy, assemble, and fix to the walls any storage you want to add to your garage gym. Think of shelves, racks, or cupboards. These will help you keep the gym area tidy, so you can use the whole floor to exercise at all times.
If you skip this step, you may end up moving plates, dumbbells, and other pieces of gear often.
Finally, when everything is in place, buy and build the equipment and place it where you planned to locate it. Choose machines you will likely use regularly and check the dimensions well before you buy them - for example, is the roof high enough for you to stand on a stair climber safely?
Make sure there is enough room for you to use all the machines, even when the car is parked inside the garage. To do this, buy the equipment in stages, in order of priority. This will allow you to maximise the amount of room you have. Check that all gear rests evenly on the floor before you use it.
Planning a new garage gym? At Chart Garages, we design and build high-quality timber garages and workshops to suit your space, property and plans.
Contact our team to discuss a building that could become your ideal home workout space.
