Ross Webster Tree Services

Construction

What causes delays after a BS5837 survey?

23 July 2026

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By Ross Webster

Several factors affect how long BS5837 tree work takes after the survey is done.

Access is the biggest one.

Can we get a tracked chipper and a MEWP through the gate? If not, we haul waste by hand. This adds time and cost. We always visit the site because drawings don’t show access constraints.

Trees close to buildings.

Buildings and limited drop space may require sectional dismantling. Controlled lowering takes longer than a suitable straight fell.

Protected trees.

Retained trees need the protection specified in the agreed plan. Required consents and method statements must be in place before the affected work starts.

Ground conditions.

Wet or soft ground can limit machinery access. Allow for ground conditions and the protection needed around retained trees.

Ecology pauses.

A nest in use or being built stops work on that tree, whatever the month. Nesting is most likely between March and August, so spring and early summer starts carry more programme risk. A bat roost requires a licensed surveyor.

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