# Turning a garage into a bar: what to check before you spend

_Published by CAVE4MAN (https://cave4man.com) — storage, workshop and man-cave kit for UK home garages. The shop has not opened yet; nothing here can be ordered today._

_Updated 2026-09-19 · 7 min read_

**The short answer**

A garage bar is a room people sit in, which is a different job from a garage people park in. Sort damp, cold and ventilation before any timber goes up, check with your local authority whether the change needs approval, then build storage into the walls so the floor is left for the bar and the stools.

**In this guide**

1. [A bar is a room people sit in, and that changes the job](https://cave4man.com/guides/garage-bar-conversion-uk#a-bar-is-a-room-people-sit-in-and-that-changes-the-job)
2. [Damp and cold come before anything you fix to a wall](https://cave4man.com/guides/garage-bar-conversion-uk#damp-and-cold-come-before-anything-you-fix-to-a-wall)
3. [Keep the floor for people](https://cave4man.com/guides/garage-bar-conversion-uk#keep-the-floor-for-people)
4. [Three ways to do the bar itself](https://cave4man.com/guides/garage-bar-conversion-uk#three-ways-to-do-the-bar-itself)
5. [Power, fridges and the things that get forgotten](https://cave4man.com/guides/garage-bar-conversion-uk#power-fridges-and-the-things-that-get-forgotten)

## A bar is a room people sit in, and that changes the job

A garage bar gets treated as a decorating job, and it is not one. A garage is built to keep a car dry; it is not built to keep a person warm, and the difference shows the first evening four people sit in it in November. Single-skin brick or block with no insulation, an unsealed slab, an up-and-over door that leaks air round every edge, and often one power spur off the house. Turning that into a room people choose to sit in is a building job before it is a bar job, and the bar is the cheap part.

It can also be more than a DIY job in the paperwork sense. Changing a garage into habitable space commonly involves insulation, damp-proofing, new power, ventilation and sometimes planning permission or building control, and that varies with whether the garage is integral, attached or detached and with what the property was built under. Do not take advice from a forum on this. Ring or email your local authority, describe exactly what you intend to do, and get their answer before you spend on anything you cannot take back out.

Rented and leasehold garages have a third layer. A landlord or a lease can forbid fixing to the walls, removing the door or changing the use, and a garage that comes with a parking condition on the planning may have to stay a garage. Read what you signed. A freestanding bar, a boltless shelving unit and a floor that clicks together over the slab are all reversible, which is the design brief in a garage you do not fully control.


## Damp and cold come before anything you fix to a wall

Every garage bar that failed did so in winter. The room gets cold, someone brings in a heater, and a room full of people breathing and drinking puts warm moist air into a space with cold walls. Warm moist air condenses on the coldest surface it finds, so the walls run, the bottles on the shelf get a film on them, and anything timber against the outside wall starts to smell. The order of work is not negotiable: damp first, then insulation and ventilation, then walls, then floor.

Check the slab with a square of polythene taped down for a day or two; if the underside mists or the concrete beneath darkens, moisture is rising through it. Check the walls after heavy rain for dark patches and for white salts on the brick. Both are fixable, and both are far cheaper to fix in an empty garage than behind a bar. Then the wall storage goes up while the floor is still bare, because drilling masonry puts dust everywhere below and something always gets dropped.


## Keep the floor for people

A bar counter takes a strip of floor and the stools take another strip behind it, and in a single garage that is most of the width gone. The rest is for people, which is the point. So the rule that runs through every garage project applies here more than anywhere: storage goes on the walls, and the floor keeps only the things people sit at or sit on. Bottles, glasses, the spare mixers and the box of coasters all have a wall home.

Behind the bar, a freestanding boltless shelving unit does the job of a back bar without a fixing in the wall; it stands against masonry you cannot or may not drill. On the wall, steel hooks take coats, the bar towels and the extension lead, above head height so nobody catches one. A wall clock earns its place in a room with no windows, and the raised-numeral one reads across a double garage. Keep the dartboard end clear of stools, and treat the electronic board as a wall fixture with its own space rather than something wedged beside the counter.


## Three ways to do the bar itself

The counter is the decision people spend the longest on and it matters the least, because any of the three shapes below works if the room behind it is warm and dry. What separates them is how reversible they are and how much floor they take. A built-in counter uses the wall as its back and is the most solid; a freestanding unit is furniture and leaves with you; a run of shelving with a worktop across it is the cheapest and the easiest to change your mind about.

Whichever you choose, set the counter height against a stool you have actually sat on, not a figure from a picture. Sit, rest your forearms, and the counter wants to meet them without your shoulders rising. Stools vary, garage floors vary, and a counter two inches wrong is uncomfortable for as long as you own it. Level it across the slab before fixing anything, because a garage floor with a fall to the door is not level and a full glass will tell you so.

| Bar type | Good at | Watch for | Reversible |
| --- | --- | --- | --- |
| Built-in counter | Solid, looks permanent, hides services behind it | Fixed to walls you may not be allowed to drill; hard to move | No |
| Freestanding bar unit | Arrives finished, moves house with you | Light ones rock on an uneven slab; pack the feet | Yes |
| Shelving with a worktop | Cheap, deep storage underneath, easy to change | Looks like shelving unless the front is faced | Yes |


## Power, fridges and the things that get forgotten

A detached garage often runs off a single spur from the house, and a bar adds a fridge, lighting, a heater, a television and a dartboard to it. That is a conversation with an electrician, not an extension lead. Have the sockets put where the fridge and the counter will be before the counter goes in, and get the lighting on a dimmer, because a bar lit like a workshop is a workshop with bottles in it.

The fridge is the quiet failure. Many domestic fridges are not designed for a room that drops near freezing; their thermostats misread the cold and they stop cycling, so beer that should be cold is at whatever temperature the garage is. Check the manufacturer's stated ambient range before you buy one for an unheated space, or keep the room above that range, which comes back to insulation. Bottled products and mixers do not like freezing either, so the shelf they live on wants to be off the slab and away from the outside wall.

## Common questions

**Do I need planning permission to turn my garage into a bar?**

It depends on the garage and the property, and the only answer worth having is from your local authority. Converting a garage into habitable space can involve planning, building control or both, and some properties carry a condition that the garage stays as parking. Describe exactly what you intend to do and ask before you spend on anything you cannot remove.

**How do I stop a garage bar being cold and damp?**

Find the damp before you insulate. Test the slab with polythene taped down for a day, check the walls after rain, and fix what you find. Then insulate the walls and ceiling, ventilate so that warm moist air from people has somewhere to go, and only then add heating. A heater in an uninsulated single-skin garage is expensive and does not solve the damp.

**Can I keep a fridge in an unheated garage bar?**

Only if it is rated for the temperature the garage reaches. Many domestic fridges misbehave when the room around them gets close to freezing, because the thermostat reads the cold room and stops the compressor. Check the manufacturer's stated ambient range before buying, or keep the room warm enough to stay inside it.

**Should I remove the garage door for a bar conversion?**

Replacing an up-and-over door with a wall and a window makes the room far easier to keep warm, but it changes the front of the house and may need approval, so check with your local authority first. If you cannot or would rather not, an insulated stud wall built just inside the door leaves the door in place and still stops most of the draught.

## Sources

- [Garage conversion: planning permission](https://www.planningportal.co.uk/permission/common-projects/garage-conversion/) — Planning Portal
- [Is building regulations approval needed for a garage conversion?](https://www.planningportal.co.uk/permission/common-projects/garage-conversion/building-regulations) — Planning Portal

## Kit that does the job

- **5-tier boltless shelving, 875kg** — £49.99, not yet on sale (https://cave4man.com/product/boltless-shelving-875kg)
- **Heavy-duty garage hooks (10)** — £34.99, not yet on sale (https://cave4man.com/product/garage-utility-hooks-10)
- **Cubic wall clock** — £29.99, not yet on sale (https://cave4man.com/product/cubic-wall-clock)
- **Interlocking garage floor tiles** — £59.99, not yet on sale (https://cave4man.com/product/interlocking-floor-tiles)

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Guide page: https://cave4man.com/guides/garage-bar-conversion-uk