The duty to consider tree preservation when granting permission

Section 197 of the Town and Country Planning Act 1990 places a duty on a local planning authority to ensure, wherever it is appropriate, that adequate provision is made by condition for the preservation or planting of trees when it grants planning permission, and to make any Tree Preservation Order needed in connection with that grant. The duty to preserve trees on planning permission is therefore not discretionary in the way many applicants assume. It is a statutory obligation on the decision maker that bites at the moment of grant.

Which is why a permission that records no tree condition on a wooded site is a weaker permission than it looks. The duty is owed by the authority, so the officer who leaves it unaddressed creates a gap that reappears later as an enforcement problem or an appeal point.

Where the duty sits in the 1990 Act

Section 197 has two limbs. The first requires adequate provision by condition for the preservation or planting of trees, qualified by the words "whenever it is appropriate". The second requires the authority to make such Orders under section 198 as appear necessary in connection with the grant, whether to give effect to those conditions or otherwise.

The qualifier does the heavy lifting. There is no duty to impose tree conditions on a scheme with no trees and no realistic planting opportunity, and courts have not read section 197 as requiring a condition in every case. On a site with mature trees, hedgerows of amenity value, or a landscape policy in the development plan, the position is different, and the absence of any provision is harder for an authority to defend.

Two related duties sit nearby and are easy to overlook. Section 206 imposes a duty to replace a tree removed in contravention of an Order. Section 211 requires notice before works to most trees in a conservation area, which operates independently of any permission.

What the duty requires of a decision maker

Adequate provision means provision that actually does something. In practice that is a combination of four elements, and officers who impose only the last of them have not discharged the duty.

• A plan that identifies which trees are retained and which are removed, with the retained trees tied to a drawing number.
• Physical protection during construction, specified rather than described, usually through an arboricultural method statement and a tree protection plan.
• A planting scheme with species, sizes, numbers and positions, and a defined establishment period.
• A replacement obligation if planted or retained trees fail.

The evidence base for all four is a survey to BS 5837:2012, which categorises trees by quality and sets out root protection areas. A tree survey prepared to that standard is what allows a condition to be drafted precisely enough to be enforceable. Councils normally expect that work from a suitably qualified arboriculturist, and professional review of any draft is strongly advised before it is relied on.

Conditions securing retention and protection

The usual cluster runs: approved plans, arboricultural method statement, tree protection plan, supervision and monitoring, hard and soft landscaping, and replacement planting. Each has a drafting trap.

A condition that must be discharged before works begin now needs the applicant's written agreement under section 100ZA of the 1990 Act, which changed the dynamics of tree protection conditions. A method statement condition tied to the point before any site clearance is exactly the kind that needs that agreement, and an authority that fails to obtain it has a condition of doubtful effect. Applicants who refuse agreement on principle often end up with a worse outcome, because the officer may instead refuse the application for lack of certainty.

Supervision conditions need a named role and a reporting frequency. "A qualified arboriculturist shall supervise the works" is unenforceable. A condition requiring site monitoring visits at stated stages, with written confirmation to the authority within a stated period, can be checked.

Where protection depends on the contractor's behaviour rather than on fencing alone, the authority may prefer a financial guarantee, which is covered in our note on tree bonds and financial guarantees through a planning obligation.

Making or confirming an Order alongside a permission

The second limb of section 197 is used less often than it should be. An authority granting outline permission on a site with trees of amenity value has a direct statutory route to protect them, by making an Order under section 198 in connection with that grant.

The timing matters because of how the Order interacts with implementation. An Order made after a full permission has been granted does not prevent works necessary to implement that permission, since the Tree Preservation Regulations 2012 exempt such works. An Order made in connection with an outline permission, before reserved matters are approved, keeps the trees within the authority's control while the detail is settled.

That distinction is worth raising at pre-application stage on a sensitive site. It changes what the authority can require later.

Trees shown for removal on an approved plan

If the approved plans show a protected tree being felled, and the permission is a full one, implementing that permission is lawful notwithstanding the Order. The exemption in the 2012 Regulations covers works necessary to implement a planning permission, and that is how a permitted layout overrides an Order in practice.

Three qualifications are routinely missed.

1. The exemption covers what is necessary to implement the permission, not convenient during it. Felling a protected tree that the approved layout retains is still an offence.
2. Outline permission does not carry the exemption in the same way, because the works cannot yet be shown to be necessary.
3. The exemption does not displace a replacement planting condition, so removal authorised by the permission can still trigger a replacement obligation imposed by condition.

An approved plan that is ambiguous about a boundary tree is the source of most disputes. Mark removals explicitly, with the tree reference from the survey schedule, and keep the schedule and the plan consistent.

Permission as a defence to a tree offence

Section 210 creates the offence of contravening an Order, and the penalties are set by statute rather than by the authority. Where a defendant relies on a planning permission, the question is whether the works fell within the exemption, which turns on the approved drawings and on necessity.

And contractors rarely have the approved drawings on site. That single operational failure accounts for a large share of protected tree losses on development sites. A toolbox arrangement where the tree protection plan is physically present, and the retained trees are tagged on site to match the schedule, is low-cost insurance. Access and scaffolding inside a root protection area is the next most common cause, and we cover it in scaffolding and site access within a root protection area.

Discharging tree conditions in sequence

Order of discharge is where programmes slip. The sequence that works on most sites:

1. Submit the method statement and tree protection plan together, with the construction exclusion zone fencing specified and the service routes shown.
2. Get written confirmation of discharge before any demolition, clearance or materials delivery.
3. Install and photograph the protective fencing, and send the photographs to the case officer unprompted.
4. Submit the landscape details, which can usually run in parallel, with a planting programme tied to the planting season rather than to practical completion.
5. Close out the supervision reporting at each stage named in the condition.

A Landscape Strategy that carries the planting schedule, the establishment maintenance and the replacement commitment in one document tends to discharge faster than three separate submissions, because the officer can see the whole obligation at once.

Appeal arguments where the duty was overlooked

An appellant arguing that an authority failed its section 197 duty is usually arguing the wrong point, since the duty is on the authority and the appeal is against refusal. The argument has more force the other way round. Where an authority refuses because tree impacts are uncertain, the appellant can show that the duty is discharged by conditions the inspector can impose, with the draft wording supplied.

That is the practical use of section 197 in an appeal. It converts an objection about uncertainty into a conditions discussion. Supply the method statement, the protection plan and the draft condition wording with the statement of case, and the uncertainty argument loses most of its weight.

Enter your postcode on PlanScope to see which arboricultural and landscape documents a wooded site 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.