Project portfolio

Residential PiCUS Tree Decay Detection Investigation


Specialist PiCUS Tree Decay Detection investigation for housing association, West Yorkshire.




Wakefield and District Housing Ltd is one of the UK largest housing associations. It provides social housing across West Yorkshire’s Wakefield district and across Northern England.

WDH are alert to the fact that as tree owners they have a legal duty of care to asses. WDH actively engage in routine tree inspections across their estate so that any risk their trees pose to people & property can be managed in good time.

Following tree inspections concerns were raised about the structural stability of mature trees close to homes. Enviroscope were commissioned to carry out the specialist PiCUS assessments of the trees flagged for further investigation.

Using PiCUS equipment it is possible to pinpoint decay which other arboricultural surveys cannot.

The PiCUS measures sound-wave velocity through trees. The elasticity & density of the wood determines acoustic velocity. The result is a map of the extent & nature of decay.

This is used to inform decisions on tree management.

Read more about the benefits of this specialist survey technique in our PiCUS tree decay detection brochure.

How we helped

Our Principal Arboriculturist, who is fully trained and experienced in PiCUS survey, was able to pinpoint the decay issues. Based on the findings of the survey we were able to advise WDH on the trees’ risk & give recommendations for proportionate tree management manage the risk.

We supplied a comprehensive report of our findings from the tomography survey. This report and implementation of the recommended tree management works demonstrate that WDH made reasonable efforts to manage tree risk on their sites.

Contact us if you would like to know how PiCUS survey could help in your tree inspections.

What our clients say


Guy, you are a prince among men!
Thanks for taking time out to look at the tree and for your incredibly helpful advice!


Head Gardener
Bowcliffe Hall