Planning permission in Harrow
London Borough of Harrow is the local planning authority for Harrow, a London borough in Greater London. Below is what its official planning data shows — and a free check for any Harrow postcode.
1.0 — The official data
What Harrow has published
| Dataset · national planning data index | Published |
|---|
| Conservation areas | 27 |
| Article 4 direction areas (permitted development removed) | 0 |
| Tree preservation zones | 0 |
| Listed building outlines | 0 |
| Local Plan documents | 0 |
Counts are read from planning.data.gov.uk and refreshed daily. A zero or dash means the council has not yet published that dataset to the national index — not that the designation doesn’t exist on the ground. We show what we found and tell you what we didn’t. We never infer a restriction — or the absence of one — from missing data.
2.0 — What this means for your project
Reading Harrow’s planning landscape
With 27 conservation areas on the official index, design and character carry real weight in Harrow decisions. Inside a conservation area the bar for external alterations rises, and some permitted development rights narrow — which side of a boundary your property sits on can change your project’s planning route entirely.
Every application in Harrow is decided against national policy (the NPPF) and London Borough of Harrow’s adopted Local Plan. A Planning Policy report quotes the specific policies that apply to your project — verbatim, verified, and linked to the official documents.
3.0 — Check your address
The free check for Harrow postcodes
Free check — official data · Harrow
4.0 — Questions
Planning in Harrow, answered
Do I need planning permission for an extension in Harrow?
It depends on your address. Many extensions fall under permitted development, but designations change the answer street by street. The free check above reads the official data for your exact postcode.
How many conservation areas are there in Harrow?
London Borough of Harrow has 27 conservation areas published to the national planning data index. Inside one, the design bar is higher and some permitted development rights are restricted.
Where can I read Harrow's local planning policies?
London Borough of Harrow decides applications against its adopted Local Plan alongside national policy (the NPPF). A Planning Policy report quotes the specific policies that apply to your project, verbatim and linked to the official documents, and the council's own site is https://www.harrow.gov.uk.
What does a planning report for a Harrow address include?
Your site at a glance (every designation on your property, linked to its official record), the national and local policies that apply to your project, the likely blockers, things to consider, and — on the Pro report — real decided applications near you with outcomes. Every quote is verified character-for-character against its source before the report generates.
5.0 — Nearby authorities
Other councils in London