When a planning condition and a TPO consent conflict

A planning permission does not give you permission to fell a protected tree. It can carry an exemption from the Tree Preservation Order regime, but only where the works are necessary to implement a full planning permission, and only for the tree and the works that necessity actually covers. Everything outside that narrow band still needs consent from the council under the Order.

Architects run into this most often at the point where a contractor is on site with a programme. The layout was approved, the tree is in the way of the piling rig, and the question is whether the permission is enough. Usually it is enough for the tree inside the footprint and not enough for the two on the boundary that the crane will reach over.

Works authorised by a planning permission

The Tree Preservation Order regulations exempt works that are necessary to implement a planning permission that has been granted. That wording carries three separate limits and each one bites.

The permission has to be a full permission. An outline permission does not engage the exemption, so a tree cleared after outline consent but before reserved matters approval is cleared without authority. Reserved matters approval completes the permission, so the exemption runs from that approval rather than from the outline grant.

The works have to be necessary to implement it. Not convenient, not helpful to the programme, not cheaper. Necessary means the development as permitted cannot be built without doing them.

And the exemption extends only to what that necessity requires. If a house can be built by removing one tree, the exemption does not reach the second tree that the site manager would prefer gone.

Why the exemption is narrower than people assume

Three situations catch people out.

The tree that is close to but not within the approved built form. A root protection area overlapping a foundation is an argument for a design solution, not automatic authority to fell. Where the approved drawings show the tree retained, felling it is both a breach of the Order and, usually, a breach of condition.

Works not shown on the approved drawings. Access, site compound, scaffold, crane oversail and temporary services all require space, and none of them is authorised by the permission unless the drawings or an approved method statement show it. Pruning to allow scaffold is a classic example: needed, unavoidable in practice, and not covered by the exemption unless the approved arboricultural method statement includes it.

Permitted development. A rear extension built under Schedule 2 Part 1 of the General Permitted Development Order is not a permission granted on an application, so the exemption route is not available in the same way and a consent application is the safe course. A householder who fells a protected tree to build a permitted extension can end up prosecuted for the tree while the extension itself is lawful.

Implied consent and its limits

Where a permission is granted for a scheme that plainly cannot be built without removing a protected tree, the permission is treated as carrying authority for that removal. The council knew the tree was there, it granted the permission anyway, and it cannot then prosecute for doing what the permission requires.

That principle is real and it is also much weaker than it sounds in a site meeting. It depends on the council having had the information in front of it. If the application drawings did not show the tree, or showed it as retained, the argument collapses, because the permission was not granted in the knowledge that removal was required.

So the protection you want is documentary. A tree survey and constraints plan submitted with the application, showing the tree, its category and its root protection area, and a layout drawing showing it removed. That combination puts the removal beyond argument. A tree survey that shows the constraint honestly at application stage is worth considerably more than a legal opinion afterwards, and the way the constraints drawing shapes the layout is covered in the tree constraints plan and the layout it forces.

Conditions requiring retention despite consent

Here is where the two regimes actually conflict. A council can grant consent under the Order for works to a tree and separately impose a planning condition requiring that tree to be retained and protected. The two documents then say different things about the same tree.

The condition wins, in the practical sense that breaching it is a planning breach regardless of the Order consent. A tree officer's consent to remove a limb does not authorise a breach of a condition requiring the tree to be retained in accordance with an approved method statement.

The reverse conflict also occurs. A condition requires works, for example the removal of a self-seeded sycamore to open up a sightline, and the tree turns out to be protected by a blanket Order made in 1974 that nobody checked. The condition does not authorise the felling, because a planning condition cannot override the Order's own consent requirement unless the exemption applies.

Read both documents before the programme is set. And check whether a blanket or area Order covers the site, because area Orders made decades ago protect trees that nobody has surveyed since.

Sequencing where both apply

A workable sequence on a site with protected trees:

1. Confirm the protection status in writing from the council, including any conservation area designation, and get the Order plan rather than a description.
2. Identify every tree affected by the permitted development, the construction works, the temporary works and the access.
3. Sort those into trees covered by the implementation exemption and trees that are not.
4. Apply for consent under the Order for everything in the second group, allowing eight weeks.
5. Discharge the arboricultural conditions, submitting the method statement and tree protection plan, before any plant arrives.
6. Only then start work, with the protective fencing installed and signed off.

Steps four and five run in parallel and both take longer than a contractor expects. Where consent is needed for crown reduction to allow construction, specifying it in terms the tree officer will accept saves a refusal and a resubmission, and the drafting is covered in specifying crown reduction.

Getting written confirmation from the authority

There is no statutory mechanism for the council to certify that the exemption applies. What you can get is a letter from the tree officer confirming that the authority agrees the works are necessary to implement the permission and that it does not require a separate consent application.

Ask for it in those terms, attaching the approved drawings, the method statement and a schedule of the specific works. Give the officer something easy to say yes to. A request asking whether "tree works are covered by the permission" will get a careful non-answer.

Where the council will not confirm, apply for consent anyway. An application that is refused on the basis that consent is unnecessary costs you eight weeks and nothing else. Felling on an assumption costs a great deal more.

Consequences of getting it wrong

Cutting down, uprooting or wilfully destroying a tree protected by an Order, without consent and without an exemption, is a criminal offence under the Town and Country Planning Act 1990. On conviction in the Crown Court the fine is unlimited. Lopping or topping in a way that does not destroy the tree is a separate, lesser offence.

Beyond the fine there is a duty to replace. Where a protected tree is removed in contravention of the Order, the landowner is under a duty to plant a replacement of appropriate size and species in the same place, and the council can enforce that duty by notice. The obligation attaches to the land, so it follows a sale.

And the planning consequences run alongside. A breach of an arboricultural condition can be enforced by a breach of condition notice, with no right of appeal. On a scheme part-built, that is a stop on the works at the worst possible moment. Where loss has occurred and replacement is being negotiated, get the replanting specification right first time, as set out in replacement planting conditions after tree loss.

Enter your postcode on PlanScope to see which tree and arboricultural reports your project is likely to need.

This is general guidance rather than legal advice. Tree protection offences are criminal matters, so check the position with your local planning authority's tree officer or a qualified arboriculturist before any work starts. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.