A garden bar has become one of the most searched-for outdoor additions in the UK — and it is easy to see why. Whether you want a dedicated space to entertain during summer or a weatherproof retreat for year-round socialising, a well-designed garden bar adds both enjoyment and value to your property. Costs range from under £2,000 for a simple DIY conversion to well over £20,000 for a bespoke, fully insulated garden room with a bar fitted inside.
This guide covers the main build options, realistic 2026 costs, planning rules, and what to think about before you commit.
Build Options at a Glance
| Option | Typical cost (fully fitted) | Best for |
|---|---|---|
| DIY shed conversion | £1,500–£5,000 | Budget, handy homeowners |
| Off-the-shelf bar shed / pod | £4,000–£9,000 | Quicker install, mid budget |
| Bespoke timber garden room | £10,000–£25,000 | Year-round use, insulated |
| Pergola / decked outdoor bar | £3,000–£12,000 | Open-air entertaining |
| Extension or outbuilding (masonry) | £20,000–£45,000 | Permanent, planning-grade |
Costs above include structure, electrics, basic bar furniture and surfaces, and VAT at 20%. They do not include groundworks beyond a standard concrete base or elaborate plumbing for a sink with mains drainage connection, which can add £500–£2,000 depending on how close you are to existing drainage.
Popular Garden Bar Ideas
1. Shed Conversion
Converting an existing garden shed is the lowest-cost entry point. The shell is already there; you line the walls with plywood, add bar shelving, LED strip lighting, a mini-fridge (£150–£400), and a reclaimed timber worktop (£200–£800 depending on size). Budget £1,500–£3,000 for materials if you do the work yourself, or £3,000–£5,000 if you hire a local joiner and electrician.
An RCD-protected spur run from the house is almost always needed. This should be installed by a Part P registered electrician; expect to pay £300–£800 for the cable run and a small consumer unit or fused spur inside the shed.
2. Off-the-Shelf Bar Pods and Sheds
Several UK suppliers now sell garden bar buildings as flat-pack kits or assembled units. These typically arrive with a tongue-and-groove or log-cabin style construction, a bar hatch, and basic electrics pre-wired (you still need an electrician to connect to your supply). Prices for good-quality units run from around £4,000 (2.5 m × 2.0 m, uninsulated) to £9,000 (4.0 m × 3.0 m, double-glazed, insulated floor and roof).
Installation is usually 1–2 days for a two-person team on a prepared base. Base preparation — a concrete slab or compacted hardcore and paving — adds £500–£1,500 depending on size and condition of the ground.
3. Bespoke Timber Garden Room with Bar
For a year-round bar space that is genuinely comfortable in winter, you need a properly insulated garden room: 100 mm insulation in the walls, 150 mm in the roof, a UPVC or aluminium-framed double-glazed door and windows, and a heat source (a small electric panel heater or infrared heater is simplest). These buildings are supplied and installed by garden room specialists.
Expect to pay:
- 3.0 m × 3.0 m — £10,000–£14,000 installed (structure and electrics only; bar fit-out additional)
- 4.0 m × 3.0 m — £14,000–£18,000
- 5.0 m × 4.0 m — £18,000–£28,000
Bar fit-out (worktop, shelving, bar front, lighting, under-counter fridge, sink) adds £2,000–£8,000 depending on specification and whether you use a bespoke joiner or off-the-shelf kitchen-style units.
4. Pergola or Decked Outdoor Bar
For those who prefer an open-air feel, a hardwood or composite pergola with a bar structure and decked area is a popular option. This is not weatherproof but can be fitted with a polycarbonate or glass roof (£800–£2,500 extra) and side blinds or screens. Costs:
- Simple softwood pergola with decking — £2,500–£5,000
- Hardwood (oak or iroko) pergola with composite decking — £6,000–£12,000
- Glass-roofed pergola with heating and lighting — £10,000–£20,000
Planning Permission
Under the General Permitted Development Order (GPDO) in England, a garden outbuilding does not normally need planning permission if it:
- Is in the rear garden only
- Does not exceed 2.5 m in height if within 2 m of the boundary (4 m for a dual-pitch roof, 3 m otherwise if further from the boundary)
- Covers no more than 50% of the garden area (excluding the original house footprint)
- Is not used as sleeping accommodation
Most garden bars stay within these limits — but if your building has a bar and is used for occasional overnight guests, or if you want to run it commercially (e.g. Airbnb), you will need to speak to your local planning authority. Properties in conservation areas, listed buildings, or Areas of Outstanding Natural Beauty have stricter rules.
In Wales and Scotland, the GPDO thresholds differ slightly; always check with your local authority if in doubt.
Building Regulations
Small unheated timber garden buildings typically do not need Building Regulations approval. However, if your garden bar:
- Is over 30 m² in floor area
- Is connected to mains drainage
- Includes sleeping accommodation
- Contains a flue or fixed combustion appliance
…it will require a Building Regs application. Most domestic garden bars fall under 30 m² and do not trigger Building Regs, but electrics must still be notified to Building Control or carried out by a registered electrician under Part P of the Building Regulations.
Key Features Worth Spending On
Insulation — If you plan to use the bar year-round, proper insulation dramatically reduces heating bills. The difference between a well-insulated garden room and a basic shed can mean the difference between a usable winter space and a frost-filled store cupboard.
Electrics — Always use a Part P registered electrician. A dedicated circuit from the house consumer unit with RCD protection is far safer and more practical than an extension lead. Budget for enough sockets (a minimum of six for a well-equipped bar), lighting circuits, and an external socket if you want to run outdoor speakers or patio heaters.
Drainage — A simple bar can operate without plumbing if you use a portable sink or bucket. Adding a mains-connected sink with a proper waste run to a soakaway or existing drain is neater but adds cost; factor in £500–£1,500 for a plumber plus groundworks.
Flooring — Timber floors can suffer in a bar environment if drinks are spilled regularly. Porcelain tiles, LVT (luxury vinyl tile), or a quality resin floor are more durable and easier to wipe down.
What to Budget Overall
For a realistic, well-fitted garden bar that you can use comfortably nine months of the year, a total budget of £12,000–£20,000 is sensible for most UK homeowners. This allows for a mid-range insulated garden room (4 × 3 m), a modest bar fit-out, electrics, a concrete base, and basic landscaping around the structure.
If your priority is cost, a DIY shed conversion for £2,000–£4,000 can be surprisingly effective — and many homeowners go this route first before upgrading to a proper garden room later.
