Does Trellis Count Towards Fence Height?
For a safe planning check, treat an attached trellis or topper as part of the overall boundary structure and add its height to the fence or wall below it. Borderline cases are worth confirming with the local planning authority.
What to watch for
Our checker therefore asks for fence, wall/base and trellis/topper separately, then adds them together.
This page is general planning information, not a legal determination. If the property is listed, in a conservation area, subject to an Article 4 direction or planning condition, or the site layout is unusual, check the relevant authority before starting work.
Check your own situation
Our tool asks the extra questions that change the result and links back to the official source for the selected UK nation.
Related guides
Official sources
See our official sources page for England, Wales, Scotland and Northern Ireland.