How Big Can I Build a Shed Without Planning Permission?

One of the most common questions homeowners ask is how big a shed can be without needing planning permission. In most cases, UK planning rules allow generous shed sizes — as long as certain height, location, and usage rules are followed.

This guide explains exactly what you can build, where you can place it, and how to stay within the rules.

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Large garden shed built within permitted development rules

What Are the UK Rules for Shed Size?

In most cases, sheds fall under permitted development, meaning planning permission is not required. However, your shed must comply with specific limits relating to height, position, and land coverage.

The shed must be for domestic use (storage, hobbies, workshop).
It must not be in front of the main elevation of your house.
The total area of all outbuildings must not exceed 50% of the garden.

Maximum Shed Height Without Planning Permission

Height limits depend on how close the shed is to your property boundary.

Location	Maximum Height Allowed
Within 2 metres of a boundary	2.5 metres (any roof type)
More than 2 metres from boundary – flat roof	3 metres
More than 2 metres from boundary – pitched roof	4 metres

These rules apply to all outbuildings combined, not just one structure.

Pent roof shed suitable for boundary installation

How Many Sheds Can You Have?

There’s no fixed numerical limit. Instead, councils assess:

Total footprint of all outbuildings
Overall visual impact on the property
Compliance with height and placement rules

Many homeowners legally install two or more sheds, especially when using small sheds or combining a storage shed with a workshop.

Small garden shed positioned to comply with height rules

When You DO Need Planning Permission

The shed is used as living accommodation
The building exceeds height limits
The property is listed or in a conservation area
The shed sits forward of the main house elevation

In these cases, speak to your local authority or consult the official government guidance: Planning Portal – Outbuildings

Large shed suitable for multi-purpose garden use

Choose the Right Shed for Your Space

Selecting the correct shed size helps avoid planning issues while maximising usable space.

Small Sheds – ideal for tight gardens
Medium Sheds – versatile and compliant
Large Sheds – best for big gardens (check height limits)

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