West Sussex

Horsham planning data

15,030 planning applications from Horsham. 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. 12 pieces of information are filled in on at least 90% of records.

15,030

Applications

2,207

Enforcement notices

7,142

Appeals

1930–2026

Date range

What Horsham decides

Horsham has approved 86.34% of the 13,059 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%).

86.34%

Approved, of 13,059 decided

Median days to a decision

150.6

Average days

What it mostly decides

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

Application type	Applications	Share
Full	4,524	30.1%
Other	3,172	21.1%
Householder	2,761	18.4%
Conditions	1,740	11.6%
Tree	873	5.8%

How approval rates and decision times vary across the country →

What Horsham 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 Horsham actually provides each one, across all 15,030 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 Horsham 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`	15,030	100.0%
Application type `application_type`	15,029	100.0%
Description of the works `description`	15,030	100.0%
Date received `received_date`	15,030	100.0%
Council reference `reference`	15,030	100.0%
Status `status`	15,011	99.9%
Status (standardised wording) `status_normalized`	15,011	99.9%
Applicant's name `applicant_name`	14,852	98.8%
Decision `decision`	14,507	96.5%
Decision date `decision_date`	14,507	96.5%
Decision (standardised wording) `decision_normalized`	14,340	95.4%
Ward `ward`	14,185	94.4%

Partial — use with care

Information	Records with it	Coverage
Postcode `postcode`	13,029	86.7%
Who decided it (officer or committee) `decision_level`	12,239	81.4%
Case officer `case_officer`	11,318	75.3%
Agent's name `agent_name`	11,271	75.0%
Alternative reference `alternative_reference`	10,014	66.6%
Agent's phone `agent_phone`	9,622	64.0%
Agent's email `agent_email`	9,486	63.1%
Agent's company `agent_company`	8,681	57.8%
Standardised type `standard_type`	1,601	10.7%

Rarely or never published

Information	Records with it	Coverage
Appeal decision `appeal_decision`	582	3.9%
Appeal decision (standardised wording) `appeal_decision_normalized`	582	3.9%
Type of development `development_type`	0	0.0%
Officer's recommendation `officer_recommendation`	0	0.0%

Not published by this council

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

Map coordinates (easting) Map coordinates (northing)

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 Horsham 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=291&limit=5"

Council id for Horsham is 291. Full API reference for developers →

Get free access to Horsham data

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