During a recent drive around a local town, we came across a building site. The billboards advertised a new housing development made up of eight residential properties. Unfortunately, the site attracted our attention for all the wrong reasons; what we saw was a prime example of when laws designed to protect trees on development sites are ignored or not correctly applied.
Development sites and tree legislation
The development was home to several silver birch trees and all were protected by a Tree Preservation Order (TPO).
TPOs are issued by local planning authorities. They are designed to safeguard trees that are considered important on public enjoyment, environmental or aesthetic grounds. Consequently, it is illegal to do any of the following to the trees without gaining permission from the relevant authority:
- causing damage
In addition to this, trees on development sites are subject to BS5837:2012 legislation. These regulations apply to all trees that are affected by construction or demolition.
Issues on site
It was immediately clear that the trees were not being properly protected because:
- The developers had failed to safeguard the trees from damage. Erecting heras fencing would have easily solved this problem.
- The building work was so close to the trees that their major supportive roots had been removed. We do not know whether or not a topological survey had been undertaken. However, if it had, it would have pinpointed the exact location of the trees.
BS5837 tree surveys
BS5837 legislation is very clear. It says that before work starts, a professional must assess the risk posed to the trees on site. This must involve a thorough tree survey. In addition, it should include:
- an Arboricultural Impact Assessment.
- an Arboricultural Method Statement.
These surveys are key to ensuring legal, responsible development practices. Due to this, they should only be undertaken by a qualified arboricultural consultant. What we observed at this housing development suggested that either:
- a BS5837 survey had not been carried out properly.
- a survey had been done, but recommendations had been ignored.
- a BS5837 survey had not been done at all.
“Where regulations are breached, developers can be fined an unlimited sum and work on site can be stopped.” – Joanna Wells, Taylor Wells
In this case, some of the trees will probably be lost because of damage.
“Although tree regulations can limit what a developer does, a good tree consultant will work with them to find solutions to problems.” – Solid Start Property Inspections
“Even a small change in site layout, ground levels or construction techniques can aid tree protection.” – QMAX Pumping Systems
Aodhan at waster.com.au – a waste and recycling business often has to work with construction sites and new builds – we have seen sites that really do not care about legislation – but the smarter and more successful companies have a real focus on protecting the environment and sustainability.