Which reports a scheme with a Tree Preservation Order needs

A site with a protected tree needs three arboricultural documents at validation rather than one: a tree survey to BS 5837:2012, an arboricultural impact assessment, and an arboricultural method statement with a tree protection plan. That is the usual bundle of TPO site planning reports, and most local validation lists ask for them together whenever any part of the proposal sits inside the root protection area of a protected tree. If the scheme also needs a protected tree pruned or felled, that is a separate consent application to the same council, running alongside the planning application rather than inside it.

Confirming the Order and what it covers

Ask the council for a copy of the Order and its schedule before anything else. A Tree Preservation Order made under section 198 of the Town and Country Planning Act 1990 uses four classifications, and they behave differently. Individual trees are numbered T1, T2 and so on. Groups are G1, G2. Areas are A1, and woodlands W1.

The distinction matters because an area classification protects only the trees that stood within the mapped area on the date the Order was made, while a woodland classification covers everything growing there now, including natural regeneration. Councils sometimes hold Orders from the 1970s with sketch maps that do not line up with the modern boundary. Get the plan, walk the site with it, and record which trees on the ground correspond to which schedule entries.

Trees in a conservation area that are not covered by an Order have their own control under section 211 of the same Act. You give the council six weeks' notice of intended works, and the council can respond by making an Order. Same practical effect, different paperwork.

The survey that starts the evidence base

Everything else builds on a topographical survey with tree positions plotted on it. The tree survey records stem diameter at 1.5 m, height, crown spread in four cardinal directions, crown clearance, age class, physiological and structural condition, estimated remaining contribution in years, and a quality category.

Those categories drive the whole assessment. Category U trees are in such condition that they should be removed for reasons of sound arboricultural management regardless of your scheme. Category A, B and C trees are retained in descending order of value. A layout that removes a category A oak needs a very different justification from one that removes a category C self-seeded sycamore on a boundary.

Root protection areas come out of the same data. For a single-stem tree, the radius is 12 times the stem diameter, capped at an area of 707 m². Illustrative example: a tree with a 500 mm stem diameter has a root protection radius of 6 m and an area of roughly 113 m², which the arboriculturist may then reshape to reflect ground conditions and existing structures while keeping the same total area.

Councils usually expect a suitably qualified author for this work, and professional review is strongly advised before submission. Arboricultural evidence is one of the areas where an officer will notice immediately if the person writing it has not stood under the tree.

Impact assessment and what it does to your layout

The impact assessment takes the survey and tests the proposal against it. It identifies which trees are removed, which are pruned, where construction falls inside a root protection area, and what the consequences are for the trees that remain.

The section officers read most closely is the one on post-development pressure. A house with habitable rooms 4 m from a mature protected lime will generate complaints about shade and leaf fall within two winters, and the council knows it. If your layout creates that pressure, expect a recommendation of refusal even where no tree is felled during construction, because the Order does not survive a decade of pruning applications from an unhappy occupier.

Practical fixes are usually spatial. Rotate the footprint, drop a storey on the elevation facing the canopy, move parking to the far side of the plot, or accept a slightly smaller unit. Doing that at concept stage costs a redraw. Doing it after a refusal costs a redraw plus six months.

Method statement and tree protection plan

The method statement is prepared by an arboriculturist and sets out how every piece of work near a retained tree will be carried out. It is not a PlanScope report type. The tree protection plan that accompanies it shows barrier positions, ground protection, service routes, the site compound and material storage, all drawn over the root protection areas.

Detail that councils look for:

• barrier specification and the exact line of protective fencing, with the construction exclusion zone signed
• ground protection where tracked or wheeled access inside a root protection area is unavoidable
• a no-dig specification for any hard surfacing over roots, with the build-up described
• services routed outside root protection areas, or trenchless where they cannot be
• a supervision schedule naming the stages the arboriculturist attends and what is recorded

Our note on arboricultural method statements for works near roots goes through the drafting in more detail. And the plan has to be consistent with the drainage layout, so coordinate it with the engineer before submission rather than after.

Consent for works to the protected trees themselves

Pruning or felling a protected tree needs consent from the council under the Town and Country Planning (Tree Preservation) (England) Regulations 2012. There is no application fee. The council has eight weeks to decide, and silence is not consent, so nothing can be cut until a decision arrives. A refusal carries a right of appeal to the Planning Inspectorate within 28 days.

Two exemptions catch people out. Dead trees and works urgently necessary to remove an immediate risk of serious harm are exempt, with notice to the council, but "dying" and "dangerous" were narrowed in the 2012 Regulations and an unsupported claim of either is an offence waiting to happen. The other exemption is more useful: works necessary to implement a full planning permission are exempt, which means tree removal shown clearly on approved plans does not need a second consent. Outline permission does not carry that exemption.

So the sequencing question is whether to apply for tree consent first or rely on the planning permission. On a scheme where the layout depends on removing a protected tree, most agents submit both and let the officer see the arboricultural case in full.

Replacement planting and the landscape documents

Where protected trees are removed, expect a replacement planting requirement. Section 206 of the 1990 Act imposes a duty to replace a tree removed in contravention of an Order, and councils apply the same logic through conditions when they grant consent.

Replacement is judged on eventual canopy cover rather than stem count, so three whips do not replace a mature oak in policy terms. A landscape strategy that sets out species, nursery stock size, pit preparation, staking, irrigation and a five-year maintenance and replacement commitment answers the objection before it is made. Biodiversity net gain interacts here too, because the habitat condition of retained and new trees feeds the statutory metric.

Conditions and their discharge

Permission on a tree-constrained site normally arrives with a cluster of conditions: approval of the method statement before work starts, implementation of the protection plan before any equipment arrives, a supervision and monitoring regime, and landscape implementation in the first planting season after occupation.

Most must be discharged before any work starts, which means breaking ground early is a breach and, on a protected tree, potentially a criminal offence rather than a civil one. Photograph the fencing on the day it goes up, date-stamped, from fixed positions. We have set out the order these usually come in under sequencing tree conditions on a development site.

Enter your postcode on PlanScope to see which reports a site with protected trees is likely to need, and which of them a council will expect a qualified arboriculturist to sign.

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.