Why planning applications near a property matter before you buy
This guide shows you how to find, read and act on planning applications near a property you are considering. It focuses on real effects you can feel as an owner: daylight and sunlight, privacy and overlooking, traffic and parking stress, construction disruption and future resale confidence.
Nearby planning applications are current or historic proposals for development or change of use on surrounding land. They are recorded on the public planning register kept by your Local Planning Authority. Registers include applications, decisions and conditions. Many are online and map based.
Why this matters when buying: new or enlarged buildings can reduce daylight and sunlight to rooms and gardens, increase overlooking of windows and amenity space, add traffic, parking pressure and noise, and change the character of a street. Planning decisions weigh material considerations such as overlooking, loss of light, noise and highway effects. Loss of a private view or pure impact on property value is not a material planning consideration.
Timing: statutory target decisions are normally 8 weeks for non major development, 13 weeks for major, and 16 weeks if Environmental Impact Assessment applies unless a longer period is agreed. Appeals exist for refusals and for non determination.
Key ideas at a glance
How to check planning applications step by step
The buyer due diligence loop
Use this loop to turn what you find on the register into clear buying actions. Refine the radius to the local street pattern and topography and always cross check facts on the planning register.
Worked examples
Two common scenarios show how to apply the checks and how to turn findings into clear buyer actions.
1) Semi detached house next door plans a two storey rear extension
Scenario: typical two storey semis on level ground with 6 m rear garden depth. The neighbour proposes a two storey rear projection 3 m deep and 3 m from your shared boundary. Rear first floor windows would face your rear windows.
Step 1: check whether full permission is required or whether any part could be permitted development. Two storey rear enlargements are tightly limited under the GPDO. Larger home single storey rear extensions up to 6 m on attached houses use a prior approval process and are single storey only. In many semis a two storey rear projection needs full planning permission. Confirm any permitted development fallback with the GPDO text and the government’s householder technical guidance.
Step 2: light. If no daylight or sunlight report is submitted, use plans to gauge overshadowing. BRE 209 is the common reference many LPAs expect for formal assessment on larger schemes. Ask whether the proposal maintains acceptable daylight to your rear rooms and sunlight to gardens per that guidance.
Step 3: privacy. Check separation between the neighbour’s new first floor windows and your rear windows. Many SPDs expect around 21 m rear to rear for main windows, but figures vary. If the distance will be about 18 m, you have a clear privacy point. Cite your LPA’s SPD if available.
Step 4: conditions. If permission is likely, look for conditions to require obscure glazing to any side windows and fixed shut below 1.7 m, and for matching materials, to protect amenity. These are common where they meet the six tests.
Practical outcome: if drawings show rear to rear less than your council’s guideline and no BRE daylight justification is provided, ask the case officer to require amendments or to refuse for harm to outlook, light and privacy. If approved, read conditions for glazing and boundary screening.
2) 60 flat mixed use scheme 200 m away on an A road
Scenario: 60 flats over ground floor commercial on an A road 200 m from the property. 30 parking spaces proposed plus cycle storage. Target decision date is in 12 weeks.
Step 1: transport. Read the Transport Assessment. National guidance expects mitigation if residual impacts would otherwise be severe. Check junction capacity, trip rates in peak hours, servicing plans and the parking management strategy.
Step 2: noise. Look for a Noise Impact Assessment with facade levels and mitigation such as acoustic glazing and mechanical ventilation where needed. National policy expects avoiding significant adverse effects and minimising others.
Step 3: construction. Expect a Construction Management Plan condition covering hours, routing and contractor parking. These are often pre commencement conditions.
Step 4: timeline. If approved, commencement must usually occur within 3 years of the decision unless varied by condition. Post decision variations may occur via section 96A or section 73. Major applications have a 13 week statutory target, extendable by agreement, and EIA applications have 16 weeks.
Practical outcome: for due diligence, assume 18 to 36 months from grant to first occupation depending on phasing and market. Monitor conditions discharge and any section 73 variations to understand build sequencing and the likely timing of near term noise and traffic during early ownership.
Checklists you can use
Use these short lists before offer and again before exchange and completion to avoid surprises.
Pre offer planning checks
Pre offer planning checks
Pre exchange and completion monitoring checks
Pre exchange and completion monitoring checks
Glossary
- Article 4 direction
An LPA order that withdraws specified permitted development rights in a defined area, so planning permission is required.
- Conditions
Requirements attached to a planning permission. They must meet six national tests and can be varied or removed under section 73.
- Decision notice
The formal written notice that sets out the decision and any conditions and approved plans.
- DMPO
The Development Management Procedure Order 2015 that sets statutory procedures for applications, publicity, decisions and planning registers.
- EIA
Environmental Impact Assessment with a 16 week target determination period for EIA applications.
- GPDO
The General Permitted Development Order that grants planning permission for specified developments subject to limits and conditions.
- Material considerations
Matters relevant to the planning decision, including light, privacy, noise, traffic and design. Loss of private view and house price are not material in general.
- Prior approval
A GPDO process where the LPA must consider specified impacts for some permitted development, such as larger single storey rear extensions.
- Section 96A
The non material amendment route to tweak a permission without a new application where the change is not material.
- Section 73
An application to vary or remove conditions on an existing permission which results in a new permission with varied conditions.
Verified callouts
Finding applications: national map, local portal and site notices
England has a prototype national planning data map that aggregates datasets and some application records, but the statutory source of truth is your LPA’s planning register, which must contain applications, decisions and conditions. LPAs publicise applications by site notice, neighbour notification and, for certain cases, press or website notices with at least 21 days for comments.
What counts as a material planning consideration
National guidance states decisions are made in line with the development plan unless material considerations indicate otherwise. Material considerations include overlooking or privacy, loss of light, noise, highway matters and design, while loss of a private view or impact on property value are not material in general.
Statutory timeframes, appeals and what a decision notice means
Statutory targets are 8 weeks for non major, 13 weeks for major, and 16 weeks for EIA applications unless a longer period is agreed. If an application is refused or not decided in time, applicants can appeal to the Planning Inspectorate. Decision notices must record the decision, reasons and conditions.
Related definitions to support this topic
Definitions
- Planning application types (full, outline, reserved matters, householder, prior approval, lawful development certificate
- How to read a planning register entry
- Planning conditions and the six tests
- Permitted development and Article 4 directions
- Daylight and sunlight: how BRE 209 is used
- Transport Assessments and Statements explained
- Noise assessments in planning
- Decision notices, s96A and s73 variations
- Appeals: how to follow them on the Appeals Casework Portal
- Enforcement time limits after April 2024 in England
Sources
- Town and Country Planning (Development Management Procedure) (England) Order 2015
- Determining a planning application - Guidance
- Use of planning conditions - Guidance
- Flexible options for planning permissions
- Permitted development rights for householders: technical guidance
- Site layout planning for daylight and sunlight: A guide to good practice (BR 209, 2022 edition)
- Travel plans, transport assessments and statements
- ES Appendix 10.1 Consultation and Legislation, Planning Policy and Guidance
- What are material considerations?
- National Planning Data Map
- Appeal a planning decision
- Design and Place SPD
- Removal or variation of conditions (section 73)
- Enforcement appeals: key changes under the Levelling Up and Regeneration Act