How to check a tree preservation order before you buy

To check a tree preservation order before you buy, you need three things: the council's TPO map or register, the order document itself with its schedule, and confirmation of whether the property sits in a conservation area. The map alone is not enough, because an order plan drawn in 1974 and digitised in 2008 can place a tree ten metres from where it actually stands.

A protected tree in the wrong place changes what you can build. It also changes what you can do in the garden, which is the part buyers discover after completion.

Where orders are recorded

Every local planning authority keeps a register of the tree preservation orders it has made under section 198 of the Town and Country Planning Act 1990. Most publish a searchable map. Some publish only a list, and a few will only answer a written enquiry.

Orders are also registrable as local land charges, so they appear in the official search your conveyancer carries out. That search is reliable for the existence of an order and less useful for working out which trees it covers, because it returns the order reference rather than the schedule.

Some authorities now publish tree preservation order data through the national planning data platform, which is worth checking alongside the council's own map. Coverage is partial and the council's register remains the definitive record.

Reading the schedule against the plan

An order has two parts that matter. The schedule lists what is protected, by reference number and species. The plan shows where those references sit.

Work through them together. A schedule entry reading "T4 Oak" tells you nothing until you find T4 on the plan, and the plan will show it as a dot, a circle or a hatched area depending on the classification.

Older orders were drawn at small scales on base mapping that has since been superseded. Where the dot sits ambiguously between two trees, the position is uncertain, and that uncertainty is resolved by the tree officer rather than by the buyer's judgement. Plenty of enforcement disputes start here.

Check the date of the order and any subsequent variation or confirmation. An order that was made but never confirmed within six months lapsed, and a provisional order that was allowed to expire protects nothing.

Individual, group, area and woodland classifications

The four classifications behave differently, and the differences matter more than most buyers realise.

Area classifications cause the most confusion. An area order protects the trees that were there on the day the order was made, so a 40 year old order over a garden may protect three surviving specimens and nothing else. It does not protect saplings that have grown since. Establishing which is which usually needs an arboriculturist and, on a contested site, aerial photography from the relevant date.

Woodland classification works the other way round and captures new growth, which is why it is used for genuine woodland rather than for garden trees.

Trees protected because of a conservation area

A tree in a conservation area is protected even without an order. Section 211 of the Act requires six weeks' written notice to the local planning authority before carrying out work to a tree above the size threshold set in the 2012 regulations, measured by diameter at 1.5 metres above ground.

The six week period gives the authority time to make an order if it wants to. If it does nothing, you may proceed within the following two years.

So the conservation area question has to be asked separately from the order question. Boundaries are not always where people assume, and they can be checked against the national dataset as described in finding conservation area boundaries. Designations further out from the site, including ancient woodland and protected habitats, show up on the MAGIC service, covered in using MAGIC to check designations around a site.

What a local land charges search shows

The official search reveals registered charges, including tree preservation orders affecting the land being purchased. It has two limits worth knowing.

First, it covers the property being bought. An order on a neighbour's tree whose canopy and roots extend across your boundary will not appear, and that tree can still stop your extension.

Second, conservation area protection is a general designation rather than a charge against a specific tree, so the search tells you the property is in a conservation area without telling you which trees that affects.

Ask the seller directly whether any tree on the plot has been the subject of an application, a refusal or an enforcement notice. That history is informative and is not always visible on the public register.

Asking the tree officer the right question

Councils answer specific questions far more readily than general ones. Compare two enquiries.

A poor one asks whether there are any TPOs at the address. A good one names the address, attaches a plan with the trees numbered, states which trees the buyer is asking about, and asks whether each is protected by order or by conservation area status, giving the order reference and classification.

Most tree officers will answer the second within a couple of weeks, and some will walk the site if the question is worth it. Put the reply in the conveyancing file, because it is evidence of the position at the date of purchase.

When the records are unclear

Sometimes the answer is not clear at all. The plan is ambiguous, the area order predates the tree, or the order was made over a site that has since been subdivided into six gardens.

Treat unclear as protected until proved otherwise. The offence under section 210 of cutting down or wilfully destroying a protected tree carries a substantial fine, and there is a duty to replace under section 206. Nobody has ever been prosecuted for being cautious.

Where a purchase depends on removing or working near a tree, commission a tree survey to BS 5837:2012 before exchange rather than after. It will identify root protection areas and the constraints they place on the footprint, which is the information that decides whether the development you have in mind is achievable at all.

And build the timing in. A tree works application to a council takes eight weeks, a conservation area notice takes six, and neither can be rushed because contracts have been exchanged.

Enter your postcode on PlanScope to see which reports a site with protected trees is likely to need.

This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.