Sort the damp and the electrics before choosing the pub sign. It is less exciting, but it stops the exciting bits going mouldy.
Begin with an empty shed
Remove stored items and inspect after rain. Look at the base, underside of the floor, lower wall edges, roof covering, glazing and door. A persistent musty smell, soft boards or staining needs a cause and a repair—not a coat of dark green paint.
Check the shell in order
Base: it should be level, stable and able to drain. Correct movement before fitting rigid counters.
Roof and walls: repair leaks and failed details. Leave access for future maintenance.
Ventilation: people, fridges and damp coats add moisture. Do not block every vent while chasing a cosy pub feel.
Security and escape: make the door easy to open from inside and keep the route clear.
Treat a serving hatch as structural work
An opening changes the wall. Its support, frame, hinges, stays, locking and weather detailing need to suit the shed construction. The open flap must not become a head-height obstacle, and rain should drain away from the opening.
Plan power around the finished layout
Mark the fridge, lighting and sockets before lining the walls. A permanent supply to a garden building should be designed and installed by a registered competent electrician. In England, electrical installations in gardens and outbuildings supplied from a dwelling fall within Part P.
Fit out without losing the shed
Keep counters shallow enough to move behind, use removable panels where services need inspection and retain a useful area for closed storage. A tiny room filled with domestic kitchen cabinets quickly stops feeling social.
Signs a shed is not worth converting
- A soft, rotten floor or bearers.
- Walls badly out of square, with doors that cannot be adjusted.
- A roof structure, not just the covering, that is sagging.
- Rot in the frame at the bottom of the walls.
- A base that has moved or sits in water.
Repairs are possible, but at some point a new building is better value. See build vs buy.
The conversion order
- Empty, clean and inspect.
- Fix the base, roof and any leaks.
- Treat the timber. See treating timber.
- Plan the layout and power with the electrician.
- Insulate and line if you want winter use. See insulation.
- Cut any serving hatch. See serving hatches.
- Fit the counter, storage and lighting.
- Decorate last.
Before buying finishes, make a repair list with three headings: keep dry, make safe, make useful. Decorate only when the first two are crossed off.
Quick answers
Can any shed become a bar?
Only a sound one. Check the floor, base, roof and frame first. A small, weak shed may be better replaced than converted.
Do I need planning permission to convert a shed into a bar?
Using an existing outbuilding for private hosting does not usually change planning, but adding to its size or height might. See planning.
How do I stop a shed bar getting damp?
Fix leaks, ventilate, keep the base dry and insulate carefully. See damp and ventilation.
Sources
Primary guidance checked 10 November 2026.