South Wales

Cardiff planning data

7,668 planning applications from Cardiff. 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. 5 pieces of information are filled in on at least 90% of records.

7,668

Applications

Enforcement notices

Appeals

1990–2026

Date range

We're still loading this council's older records.

We don't yet have Cardiff's full history back to 2023 — it's loading now. The figures below cover what we already hold, so treat them as a minimum rather than the full picture. Alerts for new day-to-day changes start once loading is complete.

What Cardiff decides

Cardiff has approved 93.56% of the 2,639 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 at or above the middle of the pack (89.18%).

93.56%

Approved, of 2,639 decided

Median days to a decision

107.5

Average days

What it mostly decides

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

Application type	Applications	Share
Other	4,074	53.1%
Householder	1,097	14.3%
Full	840	11.0%
Conditions	499	6.5%
Amendment	342	4.5%

How approval rates and decision times vary across the country →

What Cardiff 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 Cardiff actually provides each one, across all 7,668 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 Cardiff 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`	7,668	100.0%
Description of the works `description`	7,668	100.0%
Council reference `reference`	7,668	100.0%
Status `status`	7,152	93.3%
Status (standardised wording) `status_normalized`	7,152	93.3%

Partial — use with care

Information	Records with it	Coverage
Postcode `postcode`	6,861	89.5%
Date received `received_date`	5,489	71.6%
Ward `ward`	5,210	67.9%
Application type `application_type`	3,707	48.3%
Agent's email `agent_email`	3,695	48.2%
Case officer `case_officer`	3,678	48.0%
Applicant's name `applicant_name`	3,397	44.3%
Alternative reference `alternative_reference`	3,282	42.8%
Decision (standardised wording) `decision_normalized`	3,265	42.6%
Decision `decision`	3,139	40.9%
Decision date `decision_date`	3,139	40.9%
Agent's name `agent_name`	3,094	40.3%
Who decided it (officer or committee) `decision_level`	3,050	39.8%
Agent's phone `agent_phone`	2,907	37.9%
Agent's company `agent_company`	2,884	37.6%

Rarely or never published

Information	Records with it	Coverage
Standardised type `standard_type`	276	3.6%
Appeal decision `appeal_decision`	40	0.5%
Appeal decision (standardised wording) `appeal_decision_normalized`	40	0.5%
Type of development `development_type`	0	0.0%
Officer's recommendation `officer_recommendation`	0	0.0%

Not published by this council

Cardiff'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 Cardiff 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=148&limit=5"

Council id for Cardiff is 148. Full API reference for developers →

Get free access to Cardiff data

500 lookups a month, free. No card, no password — we email you a sign-in link and you're in.