Wales

Merthyr Tydfil planning data

1,131 planning applications from Merthyr Tydfil. 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.

1,131

Applications

—

Enforcement notices

Appeals

2000–2026

Date range

What Merthyr Tydfil decides

Merthyr Tydfil has approved 90.75% of the 973 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%).

90.75%

Approved, of 973 decided

Decision times can't be measured here — Merthyr Tydfil doesn't publish both a received and a decision date on enough records. The nationwide range across councils that do is 31 to 299 days.

What it mostly decides

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

Application type	Applications	Share
Full	647	57.2%
Conditions	206	18.2%
Amendment	89	7.9%
Certificate	57	5.0%
Other	52	4.6%

How approval rates and decision times vary across the country →

What Merthyr Tydfil 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 Merthyr Tydfil actually provides each one, across all 1,131 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 Merthyr Tydfil 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`	1,131	100.0%
Applicant's name `applicant_name`	1,131	100.0%
Application type `application_type`	1,131	100.0%
Description of the works `description`	1,131	100.0%
Council reference `reference`	1,131	100.0%
Case officer `case_officer`	1,128	99.7%
Agent's phone `agent_phone`	1,108	98.0%
Ward `ward`	1,104	97.6%
Agent's email `agent_email`	1,099	97.2%
Decision `decision`	1,041	92.0%
Decision date `decision_date`	1,041	92.0%
Decision (standardised wording) `decision_normalized`	1,027	90.8%

Partial — use with care

Information	Records with it	Coverage
Postcode `postcode`	1,013	89.6%
Who decided it (officer or committee) `decision_level`	946	83.6%
Agent's name `agent_name`	930	82.2%
Standardised type `standard_type`	490	43.3%

Rarely or never published

Information	Records with it	Coverage
Agent's company `agent_company`	18	1.6%
Alternative reference `alternative_reference`	0	0.0%
Appeal decision `appeal_decision`	0	0.0%
Appeal decision (standardised wording) `appeal_decision_normalized`	0	0.0%
Type of development `development_type`	0	0.0%
Officer's recommendation `officer_recommendation`	0	0.0%
Date received `received_date`	0	0.0%
Status `status`	0	0.0%
Status (standardised wording) `status_normalized`	0	0.0%

Not published by this council

Merthyr Tydfil'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 Merthyr Tydfil 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=323&limit=5"

Council id for Merthyr Tydfil is 323. Full API reference for developers →

Get free access to Merthyr Tydfil data

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