Discharging Planning Conditions in London: What Pre-Commencement Conditions Are and How to Discharge Them

**What are planning conditions?**

Planning conditions are requirements imposed by the Local Planning Authority (LPA) as part of the grant of planning permission. They are authorised under Section 72 of the Town and Country Planning Act 1990, which allows the LPA to grant planning permission 'subject to such conditions as they think fit'. The conditions are legally enforceable — a failure to comply with a planning condition is a breach of planning control, which can result in enforcement action.

• For a standard London residential extension or loft conversion, the planning decision notice will typically include:
• •The planning permission itself (the 'operative part')
• •A list of conditions (typically 4–10 conditions for a standard residential application)
• •An explanation of the conditions (informative notes that explain why each condition was imposed)

**Types of planning conditions**:

• *1. Pre-commencement conditions*:
• Conditions that must be fulfilled and approved by the LPA BEFORE any development begins. They typically require the applicant to submit specific information to the LPA — which the LPA then reviews and approves — before the development can lawfully start. Examples for a London residential extension:
• •'No development shall commence until details of the external materials to be used have been submitted to and approved in writing by the Local Planning Authority'
• •'No development shall commence until drainage details have been submitted to and approved by the Local Planning Authority'
• •'No development shall take place until a construction management plan has been submitted to and approved in writing by the Local Planning Authority, addressing: deliveries/servicing; parking for contractor vehicles; site hoarding'
• •'No development shall commence until an asbestos survey has been submitted to and approved by the Local Planning Authority'

Pre-commencement conditions cannot be imposed without the written agreement of the applicant under Section 100ZA of the Town and Country Planning Act 1990 (as amended by the Housing and Planning Act 2016). In practice, this means the planning authority must consult you about proposed pre-commencement conditions before they are imposed.

• *2. Pre-occupation conditions*:
• Conditions that must be fulfilled before the development is first occupied (or, for non-residential works, before the works are first brought into use). Examples:
• •'The development hereby approved shall not be first occupied until the boundary treatment has been installed as shown on the approved drawings'
• •'No part of the development shall be occupied until the drainage system has been installed and is operational'

• *3. Ongoing / operational conditions*:
• Conditions that apply for the lifetime of the development. Examples:
• •'The development hereby approved shall be used for residential purposes only'
• •'No external lighting shall be installed to the rear elevation without the prior written approval of the Local Planning Authority'
• •'The roof terrace hereby approved shall not be used between the hours of 10pm and 8am'

*4. Informative conditions*: Informative conditions (or 'informatives') are not technically conditions — they cannot be enforced in the same way. They are notes attached to the decision notice that remind the applicant of other legal requirements (e.g., Building Regulations; Thames Water requirements; highway licence requirements). Informatives do not need to be 'discharged' in the formal sense.

**The most common pre-commencement conditions for London residential projects (2025)**:

| Condition type | Common trigger | |---|---| | External materials details | Conservation area; character area; materials not specified in application | | Drainage details | Extension within drainage exclusion zone; new impermeable surface >5m² | | Construction management plan | Congested London street; no off-street parking; near school or busy junction | | Tree protection measures | TPO tree or Conservation Area tree within 5× stem diameter of excavation | | Archaeology (desk-based assessment) | Site within Archaeological Priority Area | | Asbestos survey | Old property; previous asbestos notification in area | | Contamination investigation | Known contaminated site; previous industrial use | | Acoustic assessment | Noise-sensitive location; near railway or flight path | | Party wall notices | Informative only — not a pre-commencement condition, but often noted |

Pre-commencement conditions are particularly common in London conservation areas, in properties near protected trees, in Archaeological Priority Areas (which cover much of central and inner London), and for any extension affecting drainage to a river, SUDS, or Thames Water sewer.

**The discharge of conditions application process**:

To formally discharge a pre-commencement (or pre-occupation) planning condition, a separate planning application must be submitted to the LPA — this is called an 'application for discharge of conditions' (sometimes also called a 'request for approval of details reserved by condition').

This is a formal planning application — not an informal enquiry or an email. It must be submitted through the correct channel (the LPA's own planning portal, or the national Planning Portal at www.planningportal.co.uk) and must include:

*1. The application form*: The standard discharge of conditions form (available through the Planning Portal), completed with: the original planning application reference number; the condition(s) to be discharged (by condition number, as referenced in the decision notice); details of what is being submitted to discharge the condition.

• *2. The supporting documents required by the condition*:
• Whatever specific information the condition requires — for example:
• •Materials condition: product data sheets, manufacturer's product codes, colour samples, or photographs of proposed materials
• •Drainage condition: a drainage layout plan and drainage design calculations
• •Construction management plan condition: the CMP document itself (typically 4–8 pages covering delivery routes, contractor parking, hours of work, dust and noise management, site hoarding)
• •Tree protection condition: an arboricultural method statement and tree protection plan

*3. The application fee*: Discharge of condition applications attract a fee set by the government (England). Current fee (2025): £34 per request, with a maximum of £116 per application where multiple conditions are being discharged in a single submission. (Note: check the current fee at time of application — planning fees change periodically.)

*Important*: Multiple conditions can be discharged in a single application, provided all the required supporting information for each condition is submitted together. It is generally more efficient (and costs no more in fees) to discharge multiple pre-commencement conditions in a single application rather than one application per condition.

*4. The LPA's decision timeline*: The LPA has 8 weeks (from the date the valid application is received) to determine a discharge of conditions application. In practice, London Borough planning departments vary in their performance against this target — some respond within 4–6 weeks for simple submissions; others may take the full 8 weeks or longer, particularly where the submitted information requires detailed review by a specialist (arboriculturalist, drainage engineer, archaeologist).

*Approval format*: If the LPA is satisfied that the submitted information meets the condition requirements, they issue a formal written approval notice. This approval notice must be obtained and retained before development starts.

*Disagreement/rejection*: If the LPA is not satisfied with the submitted information, they may ask for additional information (which restarts the 8-week clock) or refuse the application. If refused, additional or revised information can be submitted in a new discharge application — there is no formal limit on the number of attempts.

**How to approach each common pre-commencement condition**:

*Materials condition (most common for conservation areas and character areas)*:

Typically requires: samples or photographs of the proposed external materials; manufacturer product codes; brick samples matching the existing brickwork (particularly important in London conservation areas where the LPA may specify that the new brickwork must match the existing London stock brick colour and format); roof covering specification.

Practical approach: obtain samples or detailed product specifications from the material supplier; photograph the proposed samples alongside the existing materials for colour matching; submit to the LPA with a short covering letter referencing the condition number.

*Drainage condition*:

Typically requires: a drainage design plan showing the proposed drainage arrangements for the new extension (surface water discharge route — to soakaway, watercourse, or sewer; foul water connection; SUDs assessment for surface water). For London, the surface water destination must comply with the London Plan drainage hierarchy (green roof > rain garden > water butt > permeable paving > soakaway > sewer). Where a soakaway is proposed, a soakaway test result is required.

*Construction management plan (CMP) condition*:

Typically requires: a document (4–8 pages) covering: contractor vehicle routes to site; parking provisions for contractor vehicles; delivery management (hours; consolidation where road access is restricted); site hoarding arrangements; dust and debris management; noise management and working hours; a named site manager and contact number for neighbours to report issues.

The CMP is prepared by the principal contractor before works start — it should reflect the actual logistics of the specific site and be tailored to the specific London street and its constraints, not a generic template.

**The legal position — starting without discharging pre-commencement conditions**:

Starting development before pre-commencement conditions have been formally discharged (i.e., approved in writing by the LPA) is a serious breach of planning control. It is not a technical breach — it is a breach that can result in:

*1. Enforcement action by the LPA*: The LPA can issue an enforcement notice requiring the development to stop and potentially requiring the works that have been carried out to be demolished or removed. For a London extension where £50,000–£150,000 has been spent on construction, an enforcement notice requiring demolition is a catastrophic outcome.

*2. Invalidation of the planning permission*: A planning permission that was commenced without satisfying a pre-commencement condition may be considered invalid as far as that condition is concerned. In some cases, the LPA takes the view that the permission was never legally implemented (because it was 'commenced' without the condition being met) — which could require a fresh planning application.

*3. Difficulties at sale*: When the property is sold, the buyer's solicitor searches the planning register. If a planning condition has never been formally discharged, this will be flagged in the search results. The buyer's solicitor may require retrospective discharge of the condition before exchange, or may require indemnity insurance — reducing the achievable sale price.

**Common scenarios where this goes wrong on London projects**:

*Scenario 1 — The contractor starts works as soon as planning permission is received*: The planning decision notice arrives; the client is excited and tells the contractor to start immediately. The contractor starts groundworks on Day 1 of the permission grant. Nobody reads the conditions carefully — and there is a pre-commencement condition requiring drainage details to be approved. The LPA enforcement officer visits 3 weeks into the works and issues a stop notice.

Prevention: RCB's pre-construction team reads every planning condition on the decision notice and identifies all pre-commencement conditions before the construction programme starts. Discharge of conditions applications are submitted and approved before mobilisation.

*Scenario 2 — Materials condition is ignored in a conservation area*: The client's architect submitted the planning application without specifying the external materials precisely. The decision notice includes a condition requiring external materials details to be submitted and approved before development commences. The bricklayer starts without the materials condition being discharged — using a facing brick that the LPA would not approve (because it does not match the local London stock brick). The LPA requires the brickwork to be rebuilt in the approved material.

Prevention: material samples should be checked against the LPA's requirements and submitted for approval before any brickwork commences.

*Scenario 3 — Pre-commencement tree protection condition ignored*: The planning permission requires a tree protection method statement to be approved before any excavation begins. The groundworker starts excavating the extension footings without the tree protection measures in place — damaging roots of a TPO tree in the process. The LPA requires reinstatement of the root zone and assesses the damage to the tree.

Prevention: tree protection measures are specified in the discharge of conditions approval and must be in place on site before any machinery enters the work area near trees.

**The planning condition discharge timeline — integrating it with the project programme**:

For a London residential extension project, the planning condition discharge process should be integrated with the pre-construction programme as follows:

| Pre-construction timeline | Activity | |---|---| | Week 0 — Planning permission received | Read ALL conditions carefully; list all pre-commencement conditions by condition number | | Week 0–1 | Prepare discharge of conditions application(s) for all pre-commencement conditions; gather supporting information (materials samples, drainage design, CMP, tree protection plan) | | Week 1–2 | Submit discharge of conditions application(s) to the LPA via Planning Portal | | Week 2–10 | LPA review period (up to 8 weeks); respond to any LPA queries promptly | | Week 8–10 | Receive LPA written approval notice for all pre-commencement conditions | | Week 10 | Construction can legally commence |

For a project where planning permission was granted with no pre-commencement conditions, the project can start as soon as the pre-construction work (structural engineer, Building Regulations application, specification) is complete — typically 4–8 weeks after planning permission is granted.