The planning process in London can look complicated, but with the right guidance it is manageable. At Unsel Consultancy we prepare planning applications for homeowners and developers across Greater London.
What Is Planning Permission?
Planning permission is formal consent from your local council to carry out building works or change the use of a building. In London, this is managed by one of the 32 borough councils plus the City of London Corporation.

When Do You Need Planning Permission in London?
You typically need planning permission for:
- Extensions that exceed Permitted Development rights
- New builds and demolitions
- Conversions (e.g., house to flats, commercial to residential)
- Changes to listed buildings or properties in Conservation Areas
- Loft conversions in some boroughs
The Planning Application Process
Step 1: Pre-Application Consultation
Before submitting, we recommend a pre-application meeting with your local planning authority. It gives you early feedback and can make approval much more likely.
Step 2: Preparing Your Application
A complete planning application includes:
- Existing and proposed drawings (floor plans, elevations, sections)
- Site location plan and block plan
- Design and Access Statement
- Heritage Statement (for listed buildings)
Step 3: Submission and Decision
Applications are typically decided within 8 weeks for householder applications and 13 weeks for major applications. Application fees and validation requirements can change, so it is always worth checking the latest Planning Portal and borough guidance before you submit.
How Unsel Consultancy Can Help
We have prepared planning applications in boroughs across London, including Camden, Islington, Hackney, Tower Hamlets and Lambeth. We prepare all necessary drawings and documentation, liaise with planning officers and manage the entire process on your behalf.
Read more about our council approval drawings service or contact us for project-specific advice.