To discharge an arboricultural planning condition you submit the required documents — usually a detailed Arboricultural Method Statement and Tree Protection Plan prepared by a qualified arboriculturist — through a formal application to discharge conditions with a fee, and wait for the council's written approval (target ~8 weeks) before starting any site works. If it is a pre-commencement condition, starting first is a breach that can make the whole development unlawful.
You have permission — but there is a tree condition, and you cannot simply start building. This guide explains exactly what the condition wants, how to discharge it, the fees and timings, and the trap that catches developers who assume permission alone lets them break ground.
Why the condition exists and when it bites
When an LPA grants permission on a site with trees, it commonly attaches a tree-protection condition. Very often this is a pre-commencement condition worded like:
"No works shall take place until a detailed Arboricultural Method Statement and Tree Protection Plan has been submitted to and approved in writing by the Local Planning Authority."
Read that literally, because the council does. "No works" includes demolition, site clearance, and even bringing plant and machinery onto the site. You can hold full planning permission and still be legally barred from starting until the condition is discharged.
This sits in the wider BS5837 document stack: the survey, impact assessment and constraints plan are the pre-permission "can we build this?" documents; the detailed Arboricultural Method Statement and Tree Protection Plan are the post-permission "prove you'll protect the trees" documents you discharge as conditions.
Types of tree condition you might see
Not every tree condition is pre-commencement, and reading which is which decides your programme:
| Condition type | When it must be met | Example |
|---|---|---|
| Pre-commencement (AMS/TPP) | Approved in writing before any works | "No works until AMS and TPP approved" |
| Fencing / protection installed | Before works, verified on site | Protective barriers up before demolition |
| Arboricultural supervision | During construction | Site visits logged at key stages |
| Post-completion / landscaping | Before occupation or within a set period | Replacement planting, aftercare |
A single permission can carry several of these at once. The pre-commencement ones are the ones that stop you starting; the others shape how you build and finish.
What the council actually wants to see
The exact wording of your condition governs, but a discharge submission for an arboricultural condition typically needs:
The Arboricultural Method Statement (AMS)
The written methodology for protecting retained trees during construction, covering:
- Protective fencing — specification, layout and the crucial point that it goes up before any works and stays up throughout.
- Construction Exclusion Zones (CEZ) — the no-go areas, usually the Root Protection Areas.
- Any works within or near an RPA — how they will be done: no-dig surfacing, hand-digging, special foundation design, and how excavation, level changes and service routes avoid root damage. See can you build in a root protection area? for the engineered methods.
- Phasing and sequencing of operations.
- Supervision / monitoring regime — arboricultural site oversight, which is frequently a condition in its own right.
The Tree Protection Plan (TPP)
The scaled drawing that turns the AMS into a map: fencing positions, exclusion zones, ground protection and service routes plotted against every retained tree and its Root Protection Area (radius = 12 × stem diameter, capped at 707m²; 15 × for veteran trees).
The whole point is to show, credibly and specifically, that trees the LPA chose to keep will physically survive the build.
Step-by-step: discharging the condition
Step 1 — Read every condition on your decision notice
Identify which conditions are arboricultural and, critically, which are pre-commencement versus which can be met later (e.g. supervision during construction). Note the exact documents each one names, and the condition number. Do not assume — the wording varies council to council.
Step 2 — Instruct your arboriculturist early
Commission a suitably qualified and experienced arboriculturist — usually the one who did your survey — to prepare the detailed AMS and final TPP. These must be site-specific and technically robust, because the tree officer reviews them on their merits. A report from an Arboricultural Association Registered Consultant or ICF Chartered Arboriculturist is least likely to be queried. Start this well before your intended ground-breaking date; a thin, generic method statement is the commonest reason a discharge is refused.
Step 3 — Submit a formal application to discharge conditions
Discharging is a formal application in its own right, with a fee, submitted to the LPA (via the Planning Portal or the council's own route). Reference the specific condition numbers you are discharging and attach the AMS and TPP. You can discharge several conditions in one application.
Step 4 — Allow for the decision period
The LPA has a target period — commonly around eight weeks — to respond. Plan your programme around this. You are waiting for written approval; silence is not consent for a pre-commencement condition, so do not treat the deadline passing as a green light.
Step 5 — Install protection, then start
Once discharged, put up the protective fencing exactly as the approved TPP shows, before any other works, and follow the AMS throughout. If supervision is conditioned, arrange the site visits and keep the records and certificates — they may be needed later to satisfy a monitoring condition or to prove compliance if challenged.
The trap: starting before discharge
This is the expensive mistake. Beginning works in breach of a pre-commencement condition can render the entire development unlawful and expose you to enforcement action — not just a tree problem, but a permission problem. Courts and councils take root damage to protected trees seriously, and remedying an early start is far costlier than the few weeks it takes to discharge properly.
A related trap: even after discharge, if any retained tree is protected by a Tree Preservation Order or sits in a Conservation Area, works to that tree may need separate consent on top of the discharged condition. Planning permission and TPO consent are different regimes — a TPO consent decision takes its own eight weeks, and unauthorised works to a protected tree are a criminal offence carrying a fine of up to £20,000 in the Magistrates' Court plus a duty to replant. Confirm status with a TPO check and read the TPO guide if in doubt.
Timeline you should build in
Working backwards from your intended start on site:
- 8 weeks — LPA determination of the discharge application.
- 1–2 weeks — arboriculturist preparing the detailed AMS and TPP (longer for large or complex sites).
- Plus a buffer for any council queries or requested revisions — and, if a retained tree is protected, a further ~8 weeks for any separate TPO consent.
In short, budget six to ten weeks between instructing the work and lawfully breaking ground, and longer where protected trees add a second consent. Treating the discharge as an afterthought is what delays projects.
Discharge standards are set locally — check your council
The eight-week target and the general mechanics are national, but what a tree officer expects to see in your AMS and TPP, and how strictly they read it, is local. Each authority adopts BS5837 through its own validation and conditions practice, and the same method statement can sail through one council and be sent back for more detail in the next. Some tree officers want method-statement detail at application stage; others condition almost everything to discharge.
So before you submit, check how your authority handles tree conditions. PlanWatch tracks live tree-related planning activity per council, so you can see how discharge applications and tree conditions are being dealt with in your area — compare, for example, Manchester, Lambeth and Bristol, or find your council from the tree-surveys hub. And note this guide is England-centric: Scotland, Wales and Northern Ireland run parallel-but-distinct planning and tree-protection regimes, with their own condition and consent mechanics — verify the framework that applies where you're building.
Where to go next
- Understand the document itself: Arboricultural Method Statement.
- And its companion drawing: Tree Protection Plan.
- The engineered methods your AMS may rely on: can you build in a root protection area?
- If you are earlier in the process: Tree Surveys for Planning.
- If a document was bounced before permission: Tree Survey Rejected at Validation?.