Tree Preservation Orders: What Every Homeowner Needs to Know

What is a Tree Preservation Order?

A Tree Preservation Order (TPO) is a legal mechanism made by local planning authorities to protect specific trees, groups of trees, or woodlands. Once a TPO is in place, it becomes a criminal offence to cut down, top, lop, uproot, wilfully damage, or wilfully destroy the protected tree without the council's written consent.

TPOs are typically placed on trees that contribute to local amenity - whether that's visual, historical, or ecological value. A single mature oak in a front garden, a row of lime trees along a street, or an ancient woodland can all be subject to TPO protection.

How Do I Know if a Tree is Protected?

Trees subject to a TPO are recorded on the local authority's register. You can check whether trees on or near your property are protected by:

• Searching your council's online TPO register or interactive map
• Contacting the council's tree officer directly
• Checking your property's title deeds or any searches from when you purchased
• Commissioning a tree survey as part of your planning application

It's also worth noting that trees in Conservation Areas have automatic protection, even if they don't have a specific TPO. You must give the council six weeks' notice before carrying out works to any tree over 75mm in diameter in a Conservation Area.

What Works Require TPO Consent?

If a tree is protected by a TPO, you will need written consent from the local planning authority before carrying out most works. This includes:

Exemptions: When You Don't Need Consent

There are limited circumstances where works to a protected tree can proceed without formal consent:

• Dead or dying trees: If the tree is dead, dying, or has become dangerous, you may remove it - but you should notify the council and be prepared to provide evidence.
• Statutory undertakers: Works required by utilities (electricity, telecoms) to maintain services.
• Planning permission: If works to the tree are explicitly covered by a granted planning permission, separate TPO consent may not be required - but this must be clearly stated in the decision notice.
• Fruit trees: Cultivated fruit trees can usually be pruned without consent, though councils may disagree on what constitutes "cultivated."

How TPOs Affect Planning Applications

If your development site contains or is adjacent to protected trees, this will significantly influence your planning application. Councils take tree protection seriously, and applications that threaten valuable trees are often refused or require substantial amendments.

BS5837 Tree Survey

For most applications on sites with significant trees, the council will require a BS5837 Tree Survey. This British Standard sets out the methodology for assessing trees in relation to development. The survey will:

• Identify all trees on and adjacent to the site
• Categorise trees by quality (A, B, C, or U grades)
• Calculate Root Protection Areas (RPAs) - the zone where construction activity must be restricted
• Provide recommendations for tree retention, protection, and any necessary removal

Arboricultural Impact Assessment (AIA)

Beyond the survey, an Arboricultural Impact Assessment evaluates how your proposed development will affect the trees. It considers:

• Direct impacts (tree removal, pruning requirements)
• Indirect impacts (changes to drainage, compaction from construction traffic, shade from new buildings)
• Mitigation measures (protective fencing, no-dig construction methods, replacement planting)

Arboricultural Method Statement (AMS)

If your application is approved, a condition will often require an Arboricultural Method Statement before construction begins. This document sets out exactly how trees will be protected during the build - specifying protective fencing locations, no-dig areas, and supervision requirements.

Applying for TPO Consent

If you need to carry out works to a protected tree (whether as part of a development or independently), you'll need to submit a Section 211 Notice (for Conservation Area trees) or a TPO application to your local planning authority.

The application should include:

• A clear description of the proposed works (species, location, extent of pruning/removal)
• Justification for why the works are necessary
• Photographs showing the tree's current condition
• For removal: proposals for replacement planting

The council has eight weeks to determine TPO applications. If approved, consent typically comes with conditions - such as requiring works to be carried out by a qualified arborist, or specifying replacement planting.

Tree-Related Subsidence Claims

A common reason for seeking TPO consent is subsidence caused by tree roots. If a protected tree is damaging your property, you may be able to obtain consent for removal or significant pruning - but you'll need to provide strong evidence:

• Structural engineer's report confirming the damage
• Root identification evidence linking the tree to the damage
• Soil analysis showing the shrinkable clay conditions
• Assessment of whether pruning (rather than removal) could resolve the issue

Key Takeaways