West London

Harrow planning data

6,016 planning applications from Harrow. Ask questions about them in plain English from ChatGPT or Claude — no coding, about two minutes to set up — or pull them straight into your own software. 14 pieces of information are filled in on at least 90% of records.

6,016

Applications

—

Enforcement notices

1,821

Appeals

2023–2026

Date range

What Harrow decides

Harrow has approved 74.65% of the 5,025 applications it has decided since January 2023. Across the 225 councils with a comparable caseload the range is 71.37% to 99.14%, so this is below the middle of the pack (89.18%).

74.65%

Approved, of 5,025 decided

Median days to a decision

96.5

Average days

What it mostly decides

The mix of application types Harrow handles — useful for telling whether your kind of application is routine here or unusual.

Application type	Applications	Share
Householder	2,214	36.8%
Full	1,189	19.8%
Certificate	861	14.3%
Other	550	9.1%
Tree	482	8.0%

How approval rates and decision times vary across the country →

What Harrow actually fills in

A "field" is one piece of information on an application — the decision date, the applicant's name, the address. Councils fill these in inconsistently, so this table measures how often Harrow actually provides each one, across all 6,016 records. Anything listed as reliable you can count on; anything lower, check the council's own record before relying on it.

Once this data is connected to ChatGPT or Claude you can just ask "what information does Harrow actually fill in?" and get these same numbers back. How to connect →

Reliable — 90% or more of records

Information	Records with it	Coverage
Address `address`	6,016	100.0%
Application type `application_type`	6,016	100.0%
Description of the works `description`	6,013	100.0%
Council reference `reference`	6,016	100.0%
Date received `received_date`	6,012	99.9%
Status `status`	6,010	99.9%
Status (standardised wording) `status_normalized`	6,010	99.9%
Applicant's name `applicant_name`	5,999	99.7%
Case officer `case_officer`	5,997	99.7%
Ward `ward`	5,969	99.2%
Decision `decision`	5,670	94.2%
Postcode `postcode`	5,648	93.9%
Decision date `decision_date`	5,624	93.5%
Decision (standardised wording) `decision_normalized`	5,614	93.3%

Partial — use with care

Information	Records with it	Coverage
Agent's name `agent_name`	5,018	83.4%
Agent's company `agent_company`	4,675	77.7%
Who decided it (officer or committee) `decision_level`	4,664	77.5%
Standardised type `standard_type`	2,068	34.4%
Map coordinates (easting) `easting`	1,639	27.2%
Map coordinates (northing) `northing`	1,639	27.2%

Rarely or never published

Information	Records with it	Coverage
Alternative reference `alternative_reference`	229	3.8%
Appeal decision `appeal_decision`	198	3.3%
Appeal decision (standardised wording) `appeal_decision_normalized`	198	3.3%
Agent's email `agent_email`	0	0.0%

Not published by this council

Harrow's portal has been verified not to publish these fields at all — different from a field that exists but is rarely filled in.

Agent's phone Type of development Officer's recommendation

Get this data

Ask it in ChatGPT or Claude

Connect it once with your email address, then ask questions like "which extensions were refused in Harrow last year?" or "what's the planning history of this address?" — no coding, about two minutes to set up. Setup guide →

Or call it from your own code

curl -H "X-Api-Key: pk_..." \
  "https://ukplanningapi.co.uk/v1/applications?council_id=141&limit=5"

Council id for Harrow is 141. Full API reference for developers →

Get free access to Harrow data

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