Many trees in Hertfordshire,North London,Middlesex and Buckinghamshire are protected by Tree Preservation Orders (TPOs) or located in conservation areas, meaning you need permission before carrying out tree work.

Working on protected trees without consent can result in unlimited fines.

We have extensive experience working with Hertsmere Borough Council (for Potters Bar) and Barnet Council Tree Preservation Orders. Our TPO service takes the stress out of the application process and ensures all work complies with local authority requirements.

Our TPO service includes:

TPO Checking - We can check if your tree has a Tree Preservation Order through council records and advise on requirements.

Application Preparation - We prepare complete applications including detailed work specifications, justification, and supporting photographs.

Council Liaison - We communicate directly with council tree officers, respond to queries, and navigate the approval process.

Compliant Work - Once approved, we carry out all work exactly as specified in the application, maintaining full compliance.

Conservation Area Notifications - For trees in conservation areas, we submit required 6-week notifications and advise on the process.

Appeals Support - If applications are refused, we can advise on modifications or appeal processes.

Common reasons for TPO work applications:

  • Trees causing structural damage or subsidence
  • Dead, dying, or dangerous trees
  • Trees are causing excessive shading
  • Trees interfering with services or structures
  • Routine maintenance for tree health
  • Trees causing nuisance (must be reasonable)

Application timeline:

  • Standard applications: 8 weeks for council decision
  • Conservation area notices: 6 weeks minimum
  • Emergency work: Immediate with retrospective notification


Important: Never carry out work on protected trees without permission. Even removing deadwood from TPO trees requires consent. We can advise on what work, if any, can be done without an application.

TPO application service: From £150-£300 depending on complexity