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Tree Law Hertfordshire

A Complete Guide to Tree Preservation Orders in Hertfordshire

By Gem Tree Management

Tree Preservation Orders (TPOs) protect thousands of trees across Hertfordshire. If you own or manage property with protected trees, you need to understand what a TPO means, how to check if your trees are covered, and how to apply for permission to carry out work.

This guide covers everything you need to know, with specific information for every Hertfordshire council area.

What Is a Tree Preservation Order?

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

TPOs exist to protect trees that contribute to the amenity of an area — meaning they are visible from public spaces and add to the character or appearance of the local environment.

What a TPO Covers

A TPO can apply to:

  • Individual trees — identified by species and location on a map
  • Groups of trees — a cluster protected as a unit
  • Areas of trees — all trees within a defined boundary
  • Woodlands — all trees within a wooded area, including future growth

The order protects the entire tree, including its roots and branches.

How to Check If a Tree Has a TPO

Online Planning Portals

Most Hertfordshire councils publish their TPO registers online. You can search by property address or view TPO maps:

Land Charges Search

If you're buying a property, a local authority land charges search (part of the conveyancing process) should reveal any TPOs affecting the site.

Ask Us

When you request a quote from Gem Tree Management, we check TPO status and conservation area boundaries as standard — at no charge. We know the local tree officers across Hertfordshire and can quickly establish whether your trees are protected.

Conservation Areas — Similar But Different

If your property is within a conservation area, trees have a separate layer of protection even without a TPO. You must give six weeks' written notice (called a Section 211 notice) to the council before carrying out work on any tree with a trunk diameter over 75mm, measured at 1.5 metres above ground level.

During this six-week period, the council can:

  • Allow the work to proceed (or simply not respond, which counts as consent)
  • Make a TPO on the tree to provide permanent protection
  • Request more information before making a decision

Many areas we work in have extensive conservation area coverage, including Chorleywood, Rickmansworth, St Albans, Berkhamsted, and parts of Watford.

How to Apply for Work on a TPO Tree

The Application Process

1. Identify the tree — species, location, TPO reference number if known
2. Describe the proposed work — be specific (e.g., "crown reduce by 2 metres" not "cut back tree")
3. State your reasons — why the work is necessary (safety, light, subsidence, etc.)
4. Submit the application — via the council's planning portal or by post using form TPO/1
5. Wait for a decision — councils have eight weeks to respond

There is no fee for TPO applications.

What Councils Consider

When assessing your application, the council's tree officer will consider:

  • The tree's amenity value — its visibility, condition, and contribution to the area
  • The reason for the work — safety concerns carry more weight than aesthetic preferences
  • The proposed specification — whether the work is proportionate and follows good arboricultural practice
  • Any supporting evidence — arboricultural reports, structural engineer assessments, photographs

How We Help

At Gem Tree Management, we handle the entire TPO application process for our clients. This includes:

  • Checking TPO registers and conservation area maps
  • Assessing the tree and recommending appropriate work
  • Writing the application with clear arboricultural justification
  • Submitting to the council on your behalf
  • Liaising with the tree officer if they have questions
  • Carrying out the approved work once consent is granted

We've submitted hundreds of successful applications across Hertfordshire councils. Our knowledge of what each council expects means applications are more likely to be approved first time.

What Work Is Allowed Without Consent?

Even on TPO trees, some work is permitted without an application:

  • Dead branches — removing clearly dead wood from a living tree
  • Dead trees — removing a tree that is confirmed dead (but you must give the council five days' notice and be prepared to prove the tree was dead)
  • Dangerous trees — urgent work to remove an immediate risk to persons or property (you must notify the council as soon as possible after the work)
  • Compliance work — work required to comply with other legislation (e.g., preventing obstruction of a highway)

For any of these exceptions, we recommend notifying the council before or immediately after the work and keeping photographic evidence.

Penalties for Unauthorised Work

The penalties for carrying out unauthorised work on a TPO tree are severe:

  • Magistrates' court: fines up to £20,000
  • Crown court: unlimited fines
  • The court considers the financial benefit gained and any harm to the tree's amenity value
  • Replacement planting: councils can require you to plant a replacement tree of an appropriate size and species

These penalties apply to the person who carried out the work and potentially the property owner who instructed it. Using an unqualified operator who doesn't check TPO status puts you at risk.

TPO Statistics in Hertfordshire

Hertfordshire has one of the highest concentrations of TPOs in England, reflecting the county's mature tree stock and strong conservation ethos. Areas with particularly high TPO coverage include:

  • Chorleywood and Rickmansworth — extensive woodland and mature garden trees throughout the Chilterns AONB fringe
  • St Albans — historic city with large conservation areas and mature avenue trees
  • Berkhamsted — valley setting with significant beech and oak woodland under protection
  • Harpenden — leafy residential areas with high amenity tree coverage

Common Reasons TPO Applications Are Refused

Understanding why applications fail helps you submit a stronger case:

1. Insufficient justification — "I don't like it" or "it blocks my satellite dish" are not strong enough reasons
2. Excessive work proposed — asking to remove a tree when crown reduction would address the issue
3. Poor specification — vague descriptions like "cut back" without measurements
4. No supporting evidence — for subsidence claims, councils expect a structural engineer's report and root identification
5. Species sensitivity — some species respond badly to heavy pruning; the council may refuse work that would harm the tree

Getting Started

If you have a tree that needs work and you're unsure whether it's protected, the simplest approach is to contact us. We'll check the TPO status, assess the tree, advise on what work is appropriate, handle any applications needed, and carry out the work once approved.

We cover all of Hertfordshire from our base in Watford, including St Albans, Rickmansworth, Hemel Hempstead, Barnet, and Harrow.

Call 0208 2061 073 or request a free quote.

Frequently Asked Questions

How do I find out if a tree has a TPO?

Contact your local council's planning department or tree officer, or search their online planning portal. When you get a quote from Gem Tree Management, we check TPO status for you at no charge.

Can I prune a tree with a TPO?

You can prune a TPO tree only with written consent from your local council. You must submit an application describing the proposed work and wait for approval, which can take up to eight weeks. The exception is removing dead branches, which is generally permitted without consent.

What happens if I cut down a TPO tree without permission?

You could face fines of up to £20,000 in a magistrates' court or unlimited fines in a crown court. The council can also require you to plant a replacement tree. Both the person who carried out the work and the property owner can be prosecuted.

Can a TPO be removed or overturned?

TPOs can be revoked or varied by the council, but this is rare. You can appeal a refused TPO application to the Planning Inspectorate. If a tree dies or becomes dangerous, the TPO effectively ceases to apply to that tree, though the council may require a replacement.

How long does a TPO application take?

Councils have eight weeks to decide a TPO application from the date of receipt. In practice, straightforward applications in Hertfordshire are often decided within four to six weeks. Complex cases or those requiring site visits may take the full eight weeks.

Do TPOs apply to hedges?

TPOs do not usually apply to hedges, though individual trees within a hedge can be subject to a TPO. High hedge disputes are handled separately under the Anti-social Behaviour Act 2003. However, hedges in conservation areas may require notice before work is carried out.

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