- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 02 Feb 2021
Tree root subsidence
Subsidence occurs when the soil beneath a building is unstable and sinks downward. This is not the same as ‘settlement’, which is caused by the weight of the building, but it can still have a negative impact in terms of the overall structural stability. The opposite effect of subsidence is ‘heave’, where the site upon which the building is situated moves upwards and/or sideways.
Burge v South Gloucestershire Council:
In a ground-breaking decision of interest to property professionals and homeowners, a couple whose conservatory was catastrophically undermined by the roots of a protected oak tree have won £25,000 in compensation from their local council.
The tree, which was protected by a tree preservation order (TPO), reached a height of up to 11 m and stood just outside the couple’s garden, about 13 m from their home. Expert evidence pointed to it as the cause of severe cracking in the couple’s conservatory but the council had refused to allow it to be felled because of the impact that would have on the area’s visual amenity.
The couple sought compensation under Section 203 of the Town and Country Planning Act 1990 after the conservatory had to be demolished and rebuilt. In resisting the claim, however, the council argued that the conservatory had not been constructed in accordance with building industry standards.
Its foundations were extremely shallow and, had it been more solidly built, it would have been better able to resist the pressure of the tree roots. In the circumstances, it was submitted that an award to the couple could open the floodgates to a barrage of similar claims against local authorities in respect of shoddily built structures affected by tree roots.
In upholding the couple’s claim, however, the Upper Tribunal ruled that the damage to the conservatory was reasonably foreseeable. The couple had been perfectly entitled to put their trust in professional contractors they employed to construct the conservatory. It would not have been damaged had it not been for the council’s refusal to permit felling of the oak.
 Related articles on Designing Buildings Wiki
Featured articles and news
BG 50 & VDI 2035 – your questions answered.
Will the way we heat homes change when winter comes ?
Can XR technology be leveraged in design & construction?
Or are you capping.
Digital gaming competition for UK students aged 16 to 18.
Heritage protection in England vs Australia.
Three-quarters of fire doors fail inspections
The role of geoparks, biospheres and world heritage sites.
Just one month to go ! Find out more here.
A new gallery for the University of Huddersfield.
What will it take to stop it ?
To celebrate world bee day 2022 !
Not forgetting part F and the new part overheating part O.
As energy prices jump up in cost.
With people in the UK from Ukraine.
Industry leader Steve Murray takes on role.
An abundant and versatile building material.
600,000 heat pump installations targeted per year by 2028.
Helping prevent those unwanted outcomes.
How has transport changed due to Covid-19 ?
Will you need it ? after June 15 and the new Part O ?