For a straightforward householder planning application in England, the statutory decision period is normally 8 weeks from validation. That is the target period for the local planning authority to determine the application, not a guarantee that every project will be decided on exactly the eight-week mark.
The practical programme is usually longer than eight weeks once you include the work needed before submission: survey, design, revisions, drawings, supporting information and the time it takes for the authority to validate the application.
When does the 8-week clock actually start?
The decision period starts when the application has been validated by the local planning authority. If information is missing or the application is not valid when first submitted, the clock has not properly started yet.
That is one reason a clean, complete submission matters. The planning drawings and supporting information should make the proposal easy to understand and give the authority what it needs to register the application.
See Planning & Permitted Development for how Love approaches this stage.
What happens during the planning period?
Once validated, the authority will normally consult relevant neighbours and consultees, review the proposal against planning policy and the local context, and assess matters such as scale, appearance, neighbouring impact, privacy and other material planning considerations.
Some applications are straightforward. Others prompt questions, requests for clarification or discussions about revisions. If the authority needs more time, an extension of time may be agreed with the applicant.
So should you plan on exactly 8 weeks?
No. Treat eight weeks as the statutory target for a typical householder application after validation, then allow sensible contingency around it.
A realistic project programme should also include:
- measuring and understanding the existing home;
- developing the design before submission;
- time for the client to review and approve the proposal;
- preparing the planning drawings and application information;
- validation by the local planning authority;
- the authority’s decision period;
- any agreed extension of time, amendment or follow-up.
Can planning permission take longer?
Yes. More complicated applications can take longer, and the statutory period can be extended by agreement. The design may also change during the process if a planning issue becomes clear and there is a sensible opportunity to address it.
The important thing is to separate planning time from total project time. The authority’s decision period is only one part of the journey.
What if the extension is permitted development?
If the proposed work genuinely falls within permitted development rights, a full householder planning application may not be required. But that does not mean every project can simply start immediately.
Some permitted-development routes involve prior approval, and many homeowners choose to apply for a lawful development certificate to obtain formal confirmation that the proposed work is lawful.
Our guide to planning permission or permitted development explains the difference.
How can you avoid losing unnecessary time?
The best time-saving work usually happens before the application is submitted:
- establish the likely planning route early;
- design around the actual property and context;
- avoid submitting a proposal that still contains unresolved design questions;
- prepare the correct drawings and information for the application;
- respond promptly if the authority raises a reasonable query.
The useful planning answer
For many home projects in England, think of 8 weeks after validation as the standard planning decision target, not the total project programme and not a guaranteed completion date.
If you are still at the stage of deciding what to design and which planning route applies, start with your home. Getting the route clear before the application is usually more valuable than trying to shave days off later.
This article is general guidance for residential projects in England. Planning requirements and timescales can vary by application and local authority.