Can I put a shed, greenhouse or polytunnel on an allotment?

Possibly, but check the tenancy and obtain any required written approval before buying materials or starting work. Allotment agreements can restrict the type, position and presence of sheds, greenhouses and polytunnels.

Start with the site rules

The RHS tells new tenants to check the lease for limitations on structures. Ask the manager what drawings, dimensions or materials they need from you and whether the plot already has an approved structure. Do not assume a neighbour's shed establishes the rule for your tenancy.

Think about practical effects as well as permission: shade on your own and neighbouring beds, wind exposure, rainwater collection, access for repairs and what happens at the end of the tenancy. Secure loose materials and remove broken glass promptly.

Keep the approval

Save written permission with your tenancy papers. If the rules change or you replace the structure later, check again rather than treating the first approval as permanent.