Do I Need Planning Permission for a Shed?

01

The Permitted Development Rules for Sheds

Sheds fall under Schedule 2, Part 1, Class E of the GPDO — the rules for "buildings incidental to the enjoyment of a dwellinghouse." You can build a shed without planning permission if:

Height Limits

• Dual-pitched roof (apex): Maximum 4 metres high
• Any other roof type (flat, mono-pitch, pent): Maximum 3 metres high
• If within 2 metres of a boundary: Maximum 2.5 metres high regardless of roof type

The 2.5-metre boundary rule is the one that catches most people. If your shed is anywhere near a fence line, the maximum overall height is 2.5 metres — that's about 8 feet 2 inches.

Size and Coverage

• The shed, together with all other outbuildings and extensions, must not cover more than 50% of the garden (the land around the original house)
• No minimum size — a 6x4 garden shed is fine, so is a 6x3 metre workshop, provided it meets other rules

Placement

• Must not be built forward of the principal elevation (the front of the house)
• On article 2(3) land only (conservation areas, National Parks, National Landscapes, the Broads and World Heritage Sites), it must not be on land between a side wall of the house and the boundary (Class E, para E.3). On ordinary land there is no side-of-house ban for outbuildings
• Must be within the curtilage (garden/grounds) of the house

Use

• The building must be incidental to the enjoyment of the dwellinghouse — storage, workshop, home office, gym, hobby room
• It must NOT be used as separate living accommodation — no sleeping, no independent dwelling
• If you turn a shed into a self-contained living space, it becomes a change of use requiring planning permission

02

Listed Buildings

If your property is listed, Class E does not apply to any outbuilding within its curtilage (para E.1(g)), so you need planning permission. A shed in the garden of a Grade II listed house needs a planning application even if it would otherwise be permitted development. Listed building consent is a separate question: it is needed only for works that affect the character of the listed building (Listed Buildings Act 1990 s7), which includes anything fixed to it and pre-1948 structures in its curtilage that count as part of it (s1(5)).

03

Conservation Areas and Designated Land

In conservation areas, National Parks, National Landscapes (AONBs), the Broads and World Heritage Sites, two extra rules apply. They are often mixed up:

• No outbuilding of any size may go on land between a side wall of the house and the boundary (para E.3)
• In National Parks, National Landscapes, the Broads and World Heritage Sites (not conservation areas), outbuildings more than 20 metres from any wall of the house may cover no more than 10 square metres in total (para E.2)
• All other rules still apply
• Article 4 directions may impose additional restrictions

04

What Counts as an "Outbuilding"?

The same rules apply to all outbuildings incidental to the house, including:

• Garden sheds
• Summerhouses and garden rooms
• Home offices and studios
• Greenhouses
• Garages (detached)
• Workshops
• Gym/yoga studios
• Saunas and hot tub enclosures
• Carports

The total footprint of ALL these structures (plus extensions) counts towards the 50% garden coverage limit.

05

The "Incidental Use" Question

Your shed must be "incidental to the enjoyment of the dwellinghouse." This covers a wide range of uses:

Permitted uses (no change of use):

• Storage (tools, garden equipment, bikes)
• Home office/study
• Art or craft studio
• Home gym
• Music practice room
• Games room
• Workshop

Uses that may need permission:

• Running a business that involves customers visiting
• Dog grooming or similar commercial activity with clients
• Renting out as separate accommodation (Airbnb etc.)
• Any use as independent living accommodation

The line between a home office and a commercial business is blurry. HMRC and planning treat this differently. For planning purposes, if the use doesn't change the character of the property and doesn't generate traffic, noise, or other impacts, it's likely incidental.

06

Building Regulations

Most garden sheds don't need building regulations approval. Detached buildings are exempt if:

• The floor area is less than 15 square metres and contains no sleeping accommodation
• The floor area is 15-30 square metres, contains no sleeping accommodation, and is at least 1 metre from any boundary (or constructed of substantially non-combustible materials)

Buildings over 30 square metres need building regulations approval.

Electrical installations in sheds must comply with Part P of the building regulations. This usually means having a qualified electrician install and certify any fixed wiring.

07

Foundations

A small garden shed typically sits on:

• Paving slabs
• A concrete pad
• Treated timber bearers on gravel

Larger outbuildings may need proper foundations. This isn't a planning issue but affects the practicality and cost of the project.

08

How to Check If You Need Permission

1. Measure the height — including any base or platform the shed sits on
2. Measure the distance to boundaries — if under 2 metres, max height is 2.5m
3. Calculate total outbuilding coverage — add up all sheds, garages, extensions, etc.
4. Check if PD rights are removed — look at conditions on previous planning permissions, or check for Article 4 directions
5. Check if listed — any outbuilding in a listed building's curtilage needs planning permission (para E.1(g))
6. Consider applying for a lawful development certificate if you want certainty — for an outbuilding this costs £136, half the £272 planning fee (from 1 April 2026; fees rise each April: MHCLG fee schedule)

If you do need a planning application, the fee is £272 for an outbuilding (MHCLG) and decisions typically take 8 weeks. If a shed has already been built outside the PD limits, retrospective planning permission is an option. Check your local council's planning portal for Article 4 restrictions — e.g. Nottingham or Newcastle upon Tyne.

09

Common Problems

Shed on a Raised Base

If your shed sits on a raised base, platform, or decking, the height of the base counts towards the total height. A 2.4-metre shed on a 20cm raised base is 2.6 metres — over the 2.5-metre boundary limit.

Gradual Accumulation

Each new outbuilding adds to the 50% coverage total. A shed here, a greenhouse there, a summer house later — eventually you exceed 50% of the garden. The limit applies to the cumulative total.

Sleeping in a Shed

Turning a garden building into a bedroom, bedsit, or self-contained flat is a material change of use. It needs planning permission, and councils are increasingly cracking down on "beds in sheds" — particularly in London.

Pre-fabricated "Garden Rooms"

The growing market for pre-fabricated garden rooms, offices, and pods follows the same planning rules as traditional sheds. Marketing claims that they "don't need planning permission" are only true if they meet the permitted development conditions.

10

Enforcement

If a shed that breaches planning rules is substantially completed on or after 25 April 2024, the council can take enforcement action within 10 years of completion (TCPA 1990 s171B). For a shed substantially completed before 25 April 2024, the older 4-year limit still applies to the building (SI 2024/452 reg 5). An unlawful use, such as living in it, runs on its own clock: 10 years, or 4 years if it became a separate dwelling before 25 April 2024. After the relevant time limit, the council can no longer take enforcement action.