Steps for a self-prepared application
If you are applying without an agent, be especially careful with:
- Getting the exact prescribed wording for the site notice and newspaper notice
- Timing the two notices correctly relative to each other and the application date
- Producing drawings at the correct scale, including a proper site location map
- Calculating and paying the correct statutory fee for the class of development
- Checking the local authority's specific validation checklist before submitting
- Keeping a full paper trail of when and how the notices were erected and published
- Reading the local development plan for policies relevant to your site
A single error in the notice wording or timing is the most common reason self-prepared applications are returned as invalid.
When self-application makes sense
A DIY application works best for straightforward, low-risk projects such as a modest domestic extension on an unconstrained site, where the design is simple and unlikely to raise technical objections. For anything involving structural complexity, sensitive sites, or a track record of neighbour disputes, professional preparation reduces the risk of delay and refusal.