Garden Bar Ideas: The Height Rules, Power and Layout

A garden bar is one of the few garden room uses that pays for itself in obvious ways: it takes the pressure off your kitchen when you have people round, it works from April to October with almost no heating, and it gives an otherwise idle corner of the garden a job. It is also one of the easiest builds to get wrong, because the temptation is to design the bar first and think about the boring parts, planning limits, power and drainage, afterwards.

This page runs the other way round. Get the constraints settled first and the fun part gets easier.

Do you need planning permission for a garden bar?

In most cases, no. A garden bar used privately by your household counts as an outbuilding incidental to the enjoyment of the house, which is exactly what permitted development rights cover in England. You stay within permitted development if you keep inside the limits published by the Planning Portal.

The one that catches most people is the boundary rule. If any part of the building sits within two metres of a boundary, the entire structure must be no more than 2.5 metres high overall. That is not much once you have a floor build-up and a roof, so if you want a comfortable ceiling height and a pitched roof, move the building more than two metres off the fence and the limit rises to 4 metres for a dual-pitched roof, or 3 metres for anything else.

Three situations change the answer entirely. On designated land, which includes conservation areas, National Parks and Areas of Outstanding Natural Beauty, outbuildings at the side of the house need permission, and anything more than 20 metres from the house is limited to 10 square metres. Within the curtilage of a listed building, any outbuilding needs planning permission. And if you are in a flat or maisonette, these rights do not apply at all.

Permitted development rights can also be removed by a planning condition on newer estates, so it is worth a look at your title documents or a quick call to the local planning authority before you order anything. Note that Scotland, Wales and Northern Ireland have their own rules and the figures above are for England.

The alcohol question

Serving drinks to your own friends and family in your own garden is not a licensable activity. You do not need a licence, a personal licence holder or anything else to pour a beer for a neighbour at your own barbecue.

What triggers the Licensing Act 2003 is selling alcohol, or supplying it as part of a commercial arrangement. Charging per drink, running an honesty box, selling tickets to an event where drinks are included, or hiring the space out all move you into licensable territory, and that means a premises licence from the council plus a designated premises supervisor holding a personal licence. It also almost certainly means a change of use for planning, since the building would no longer be incidental to the house.

The practical line: keep it private and social and you are fine. The moment money changes hands for drinks, talk to your council’s licensing team first.

Power, water and the parts that need a professional

Electrics. A garden bar needs more power than a shed. A fridge running continuously, lighting, a sound system, possibly a heater and an outdoor socket or two add up. That means a dedicated armoured supply from the house consumer unit to a small consumer unit in the bar, with RCD protection and proper earthing. This is notifiable work under Part P of the Building Regulations in England and Wales, so use a registered electrician who can self certify it. Electrical Safety First publishes plain English guidance on what outdoor electrical work involves.

Do not run a garden bar off an extension lead from the kitchen. It is the single most common shortcut and it is genuinely dangerous once a fridge, a heater and wet hands are in the same building.

Water and waste. Most garden bars skip plumbing entirely, and that is usually the right call. A sink means a supply run, a waste run and frost protection, which multiplies the cost and the complexity. If you want to rinse glasses, an under-counter water container and a waste bucket handle it. If you genuinely want a plumbed sink, run the pipework at the same time as the electrics while the trench is open.

Drainage around the building. Roof water has to go somewhere that is not your neighbour’s garden or the base of your own building. A gutter into a water butt or a soakaway is a small job at build time and a nuisance to retrofit.

Layouts that actually work

The mistake in most garden bar designs is treating it as a room with a counter in it. The better model is a serving hatch with a room behind it, because the majority of the use is outdoors in decent weather.

The hatch bar. A bi-fold or lift-up shutter across the front, a counter at the opening, and seating outside on the patio. The building itself stays small, which keeps you well inside the height limits and the budget, and the whole garden becomes the seating area. This is the layout that gets used most.
The corner bar. An L-shaped counter inside a larger garden room, with the short leg by the door for serving and the long leg for preparation and storage. Better for year-round use and for anyone who wants the space to double as something else in winter.
The double-fronted bar. Serving hatch to the garden, plus a full door and interior seating for four or five. The compromise option, and the one where the building gets big enough that the 2 metre boundary rule really starts to bite.

Whatever the shape, the counter is the thing to get right. Around 1,050 to 1,100mm is a comfortable standing bar height, with a working surface behind it at standard worktop height of about 900mm so you are not preparing drinks at chest level. Allow at least 900mm of clear space behind the counter to move, and 1,100mm if two people will be back there at once.

Fitting it out

The kit that earns its space, in rough order of usefulness:

An under-counter fridge. The one non-negotiable. Get one rated for the temperature range it will actually see, because a standard indoor fridge in an unheated building can struggle in cold weather.
Lighting on two circuits. Bright task lighting behind the counter, low warm lighting for the seating side. One switch for both is a mistake you notice on the first evening.
Proper worktop. Something that shrugs off spills and can be wiped down. Laminate is fine, solid timber needs regular oiling in a building that gets damp.
Bottle and glass storage off the floor. Shelving above the back counter, not below it, keeps everything out of the way of drips and spiders.
A weatherproof shutter or bi-fold. The thing that turns it from a shed into a bar. It also secures the contents when you are not using it.
Heating, eventually. An electric panel heater or an infrared patio heater extends the season considerably. Insulate first though: heating an uninsulated timber box is money out of the window.

Skip the beer taps unless you are certain. A kegerator or a plumbed dispense system commits you to buying kegs on a schedule, cleaning lines regularly, and drinking the contents before they turn. Most people who install one end up back on bottles within a year.

What it costs

A garden bar is priced like any other garden building, and the bar-specific elements are a small part of it. The shell dominates the budget, followed by the electrical supply, then the fit-out. A simple hatch bar in a compact insulated building is the cheapest route to something genuinely usable. Adding insulation, a full glazed front, plumbing and heating moves it towards the cost of a small garden room, which is a different conversation.

Our garden room cost guides break the shell costs down by size and construction method, and they apply directly here because a garden bar is a garden room with a counter in it.

Frequently asked questions

Do I need planning permission for a garden bar?

Usually not, provided it stays within permitted development limits for outbuildings: single storey, maximum eaves height 2.5 metres, maximum overall height 4 metres for a dual-pitched roof or 3 metres for any other roof, and no more than 2.5 metres total height if any part is within 2 metres of a boundary. Conservation areas, listed buildings and flats are treated differently.

Can I sell drinks from my garden bar?

Not without a licence. Serving friends and family privately is not licensable, but selling alcohol, running an honesty box or hiring the space out requires a premises licence under the Licensing Act 2003 and a designated premises supervisor. It would also change the building’s use for planning purposes.

How high can a garden bar be?

Four metres overall with a dual-pitched roof, three metres with any other roof shape, and 2.5 metres maximum at the eaves. If any part of the building is within two metres of a boundary, the whole thing is capped at 2.5 metres.

Does a garden bar need its own electricity supply?

If you want a fridge, lighting and sockets, yes. That means an armoured cable run from the house to a small consumer unit in the bar, installed by a registered electrician. It is notifiable work under the Building Regulations, and running it from an extension lead is neither safe nor legal as a permanent arrangement.

Should I put a sink in a garden bar?

Most people should not. Plumbing adds a supply run, a waste run and winter frost protection, and a water container plus a waste bucket covers glass rinsing for a fraction of the cost. If you do want it, install the pipework at the same time as the electrical trench.

Can I use a garden bar in winter?

Yes, if it is insulated and heated. An uninsulated timber building with a heater will cost a fortune to warm and will still feel cold. Insulate the floor, walls and roof at build stage, fit an electric panel heater, and it becomes usable all year. Also check that any fridge is rated for low ambient temperatures.