Greater London contains more than 1,000 designated Conservation Areas – stretches of the built environment recognised for their special architectural or historic character, and protected accordingly under planning legislation. Trees are an integral part of that character in the vast majority of these areas, and their management is governed by a statutory framework that many London residents are only dimly aware of until they find themselves needing to carry out works. Section 211 of the Town and Country Planning Act 1990 requires anyone proposing to cut down, uproot, top, lop, or carry out any other works to a qualifying tree within a Conservation Area to give advance notice to the local planning authority before any work begins. This requirement applies regardless of whether a Tree Preservation Order is in place. Failure to comply is a criminal offence carrying a substantial fine. Understanding the process – what it requires, how it works in practice, and where the procedural variations across London’s boroughs are most likely to cause difficulty – is essential for any resident, landlord, or developer proposing tree works within a Conservation Area.
What Section 211 Actually Requires – and Why It Exists
Which Trees Are Covered
The Section 211 notice requirement applies to trees located within a designated Conservation Area that are not already subject to a Tree Preservation Order. TPO-protected trees have their own separate consent process under Section 198 of the same Act; Section 211 exists specifically to extend a degree of protection to the wider tree population that falls outside the TPO regime but nonetheless contributes to the character and amenity of a protected area. The threshold for coverage is a trunk diameter of 75 millimetres or more, measured at 1.5 metres above ground level. Trees below this size are not subject to the notice requirement, though it is worth noting that some London boroughs interpret the threshold cautiously and may treat borderline cases as notifiable. Multi-stemmed trees and those with irregular forms can present measurement ambiguity, and where any doubt exists, submitting a notice is always the more prudent course.
Works That Are Exempt from the Notice Requirement
Certain categories of work are exempt from the Section 211 requirement and can be carried out without prior notice. These include works to trees that are dead – provided the landowner or their agent is satisfied the tree is genuinely dead rather than in severe but recoverable decline – and works necessary to address an immediate risk of serious harm to persons or property, where the urgency of the situation does not permit the standard six-week notice period. Works carried out by or on behalf of a statutory undertaker in connection with approved infrastructure operations, and certain forestry and fruit tree operations, also fall within the exemptions. It is important to understand that the exemptions are interpreted narrowly. A tree that is visually declining is not the same as a dead tree in legal terms, and work carried out under an incorrectly claimed exemption offers no protection against prosecution. The emergency exemption is addressed in detail in a later section of this guide.
Preparing and Submitting Your Section 211 Notice
What the Notice Must Contain
A Section 211 notice must be submitted in writing to the local planning authority for the area in which the tree stands. The notice must identify the tree or trees clearly – including their location by address or site plan, their species where known, and a sufficiently detailed description of the proposed works. A written description alone is acceptable in law, but in practice a well-prepared notice that includes a simple site plan marking tree positions, a photograph of each tree, and a specific description of the works proposed – specifying extent of crown reduction, branch removal, or the nature of any felling – is considerably less likely to generate requests for further information that delay the start of the six-week period. London residents should note that the Planning Portal provides a standardised notification form for tree works, and the majority of London boroughs either require or strongly prefer its use over informal written notice.
How to Submit – Channels, Contacts, and Borough Variation
Notices must be directed to the planning department of the London Borough within whose boundary the tree stands. In practice, tree-related applications and notices are typically handled by a dedicated tree officer or arboricultural team within the planning authority, but the formal submission route in most boroughs is through the general planning portal or the borough’s online planning application system. Thirty-two of London’s 33 boroughs use the national Planning Portal for submission; the City of London Corporation operates its own separate system. Response times, officer workloads, and the thoroughness of borough-level review vary considerably across the capital. Boroughs with large Conservation Area coverage – including Westminster, the Royal Borough of Kensington and Chelsea, Camden, Islington, and Richmond upon Thames – manage high volumes of Section 211 notifications and tend to have well-developed arboricultural teams with clear procedures. Smaller or less tree-dense boroughs may route notices through more generalised planning teams, which can affect both the speed and the technical depth of the response.
The Six-Week Waiting Period – What Happens After Submission
How the Local Planning Authority May Respond
Once a valid Section 211 notice has been received, the local planning authority has six weeks in which to respond. During this period, the authority may take one of several courses of action. It may consent to the proposed works, either unconditionally or subject to conditions – typically concerning timing, the extent of works, or requirements for replacement planting. It may respond with no objection, which is functionally equivalent to consent. It may request further information, in which case the six-week period does not automatically extend unless the authority issues a formal acknowledgement of a revised or supplemented notice. Most significantly, it may use the six-week period to make a Tree Preservation Order on the tree in question – a response that fundamentally changes the regulatory situation and removes the right to proceed under Section 211.
If the Council Makes a TPO During the Six-Week Period
Where the local planning authority decides that a notified tree merits formal protection, it may make a provisional TPO during the six-week notice period. A provisional TPO takes effect immediately upon being made and brings the tree within the full TPO consent regime. The previously submitted Section 211 notice ceases to have effect, and the proposed works cannot proceed without a separate application for consent under the TPO framework. The making of a provisional TPO does not necessarily mean that consent for the proposed works will ultimately be refused – but it does mean that the works cannot proceed until a formal decision has been issued on a TPO consent application, a process that typically takes eight weeks from valid submission and may involve a site visit, arboricultural assessment, and in contested cases, a hearing. Landowners who receive notification that a provisional TPO has been made during their Section 211 notice period should seek specialist arboricultural and planning advice before taking any further steps.
After the Six Weeks – Proceeding with Works and Time Limits
If the six-week period expires without the local planning authority making a TPO or otherwise preventing the works, the person who submitted the notice is free to proceed. This permission is not indefinite. Works authorised by the expiry of a Section 211 notice period must be carried out within two years of the date on which the notice was submitted. If the works are not completed within that window, a fresh Section 211 notice must be submitted before any works commence. Where consent was granted with conditions – including replacement planting requirements – those conditions are legally binding and failure to comply with them constitutes a separate offence. Any conditions attached to consent should be read carefully and, where their practical implications are unclear, clarified with the issuing authority before works begin.
Emergency Works and the Section 211 Exemption
The emergency exemption from the Section 211 notice requirement is available where works are urgently necessary to remove an immediate risk of serious harm and the circumstances genuinely do not permit the standard six-week notice period. This exemption is not a mechanism for avoiding the notification process in cases of mere inconvenience or where urgency has been created by delayed action. Where emergency works are carried out under this exemption, the person responsible for the works must notify the local planning authority in writing as soon as reasonably practicable after the works have been completed. The notification should explain the nature of the emergency, describe the works carried out, and – where available – include supporting evidence such as a written arboricultural assessment, photographic documentation of the condition that necessitated the works, or a report from a structural engineer where a tree presented a risk to a building or structure. A well-documented emergency notification significantly reduces the risk of the authority questioning the validity of the exemption claim.
Consequences of Non-Compliance
Carrying out works to a qualifying tree in a Conservation Area without submitting a Section 211 notice – or before the six-week period has elapsed – is a criminal offence under Section 210 of the Town and Country Planning Act 1990. The maximum fine on summary conviction is unlimited, with courts instructed to take the amenity value of the affected tree into account when determining the penalty. There is no statutory obligation on the authority to require replacement planting following an unauthorised removal under Section 211, though many London boroughs will seek it through negotiation or as a condition of any subsequent planning permission affecting the site. The reputational and financial consequences of prosecution are substantial – and avoidable. It is worth noting that local planning authorities in London monitor Conservation Area tree stocks with varying degrees of active attention, but neighbour notifications, planning application searches, and the increasing use of aerial and streetview survey tools mean that unauthorised works are identified with greater frequency than many residents assume. For any works to a tree of borderline notifiable size or status, the small investment of time required to submit a Section 211 notice is straightforwardly the prudent course.