Key Takeaways
- English councils approve around 90% of householder planning applications (gov.uk planning statistics).
- A householder application costs a fixed fee and takes around 8 weeks for a decision once validated.
- Many projects need no application at all under Permitted Development.
- Approval rates vary by borough: Kensington & Chelsea around 92.5%, Brent around 76%.
- Good design that respects neighbours and local character is the biggest factor in success.
Planning permission sounds daunting, but the odds are good and the process is well defined. This step-by-step guide explains how to get planning permission in London in 2026, what it costs, how long it takes, and how to give your application the best possible chance.
Do you even need planning permission?
Start here, because many projects do not need a full application. Single-storey rear extensions within size limits, most loft dormers, and internal works often fall under Permitted Development, which lets you build without applying. You will still need Building Regulations approval. Conservation areas, listed buildings and Article 4 directions remove or restrict these rights, so the first step is always to confirm your property's position.
The step-by-step process
- Feasibility check: confirm whether you need permission and what the local policy allows.
- Design and drawings: measured survey, existing and proposed drawings, and any supporting statements.
- Submit the application to the council via the Planning Portal, with the fee.
- Validation: the council checks the application is complete (usually a few days to two weeks).
- Consultation: neighbours and consultees are notified, typically a 21-day period.
- Decision: the case officer recommends approval or refusal, usually within 8 weeks.
What are your chances?
Reassuringly high. Local authorities across England granted around 90% of householder planning applications in the quarter ending December 2025, a rate stable between 88% and 91% for five years, according to government planning statistics. Approval rates vary by borough, with Kensington & Chelsea around 92.5% and Brent closer to 76%, so local knowledge helps.
How to give your application the best chance
- Design in keeping with the property and street, especially in conservation areas.
- Respect neighbours' light and privacy, the most common grounds for objection.
- Use quality drawings and a clear design and access statement.
- Engage with the planning department early, and consider a pre-application enquiry for larger schemes.
GS Renovation manages drawings, planning and construction across every London borough. For a free assessment, contact us or call 07472 424 226. See also Permitted Development explained.