Wales · Local authority

Merthyr Tydfil County Borough Council
Planning applications.

Explore collected planning applications and decisions for Merthyr Tydfil County Borough Council. Search an address, application reference or proposal to find a record.

Collected application statistics

Collected records · All available dates

2,595Searchable applications

0Recorded as pending

92%Approval rate · 2,331 approved or refused records

181Refused applications

2,150 approved · 181 refused · 98 withdrawn. Most recent record check: 12 Oct 2026. Counts reflect the last collected status; some records may be out of date.

Local planning information

Council sources checked 14 Sept 2026

Planning information Skip to main content Local plan Replacement Local Development Plan 2016-2031 Pre-application advice Pre-application Advice Conservation areas Conservation Areas Article 4 directions Article 4

Conservation areas and Article 4 directions

Explore published planning boundaries and follow their source records for designation details. Coverage varies: an empty map does not mean there are no restrictions. Check the council’s current maps and documents before relying on a boundary.

Conservation areas8 mapped area records

Article 4 direction areasBoundary dataset not connected

Interactive planning map loads with JavaScript. Dataset sources are linked below.

Download Article 4 coverage for all authorities (CSV)

Data downloaded 14 Sept 2026. Display boundaries are simplified and indicative. Map record counts are not a complete count of designations or directions.

Source: Welsh Government / DataMapWales. Contains public sector information licensed under the Open Government Licence v3.0.

More application records

Not publishedP/23/0149
Single storey rear extension (Lawful Development Certificate)
Heddfan Stable Yard Upper Union Street Dowlais Merthyr Tydfil CF48 3LG
Received Not published
Not publishedP/23/0173
Proposed change of use from a shop to a creche with external alterations including a new shopfront and erection of elevated deck
36 - 37 Fox Street Treharris CF46 5HE
Received Not published
Not publishedP/23/0151
Replacement of the bridge structure
Feeder Pipe Bridge Off Tram Road Treharris CF46 5EF
Received Not published
Not publishedP/23/0168
Change of use of land to garden
Tynewydd Nixonville Merthyr Vale CF48 4RG
Received Not published
Not publishedP/23/0233
Demolition of extension, replacement of walkway shelter, installation of Air Source Heat Pumps, erection of cycle and bin stores, refurbishment and repair to building and other internal and external alterations
Treharris Library Perrott Street Treharris CF46 5ET
Received Not published
Not publishedP/23/0158
Single storey infill rear extension, rear dormer attic conversion. Replace existing shed roof with tiles
15 Tudor Terrace Tudor Street Merthyr Tydfil CF47 8RU
Received Not published
Not publishedP/23/0155
Discharge of condition 4 (Retaining Walls) of planning permission P/22/0286 relating to a residential development
Land Opposite 1-17 Kingsley Terrace Aberfan Merthyr Tydfil
Received Not published
Not publishedP/23/0156
Discharge of condition 3 (Boundary Details) of planning permission P/22/0286 relating to a residential development
Land Opposite 1-17 Kingsley Terrace Aberfan Merthyr Tydfil
Received Not published
Not publishedP/23/0157
Discharge of condition 5 (Site Investigation) of planning permission P/22/0286 relating to a residential development
Land Opposite 1-17 Kingsley Terrace Aberfan Merthyr Tydfil
Received Not published
Not publishedP/23/0161
First Floor Extension and Single Storey Rear Garden Room Extension
93 Heolgerrig Heolgerrig Merthyr Tydfil CF48 1SB
Received Not published
Not publishedP/23/0162
Single storey rear extension (Lawful Development Certificate)
22 Mount Terrace Merthyr Tydfil CF47 8TW
Received Not published
Not publishedP/23/0160
First floor extension
25B Holford Street Cefn Coed Merthyr Tydfil CF48 2RW
Received Not published
Not publishedP/23/0169
Demolish existing single storey extension & construct new two storey extension to rear
6 Milbourne Terrace Merthyr Tydfil CF47 0UG
Received Not published
Not publishedP/23/0165
Installation of digital advertisement hoarding to display static advertisements on rotation
21 Station Terrace Cardiff Road Merthyr Vale Merthyr Tydfil CF48 4SX
Received Not published
Not publishedP/23/0163
Two storey rear extension
1 - 2 Cross Mount Pleasant Troedyrhiw Merthyr Tydfil CF48 4LZ
Received Not published
Not publishedP/23/0164
Single storey rear extension and front porch
71 Pen Y Dyffryn Swansea Road Merthyr Tydfil CF48 1PL
Received Not published
Not publishedP/23/0167
Proposed extension to workshop
7 - 9 Harlan Business Park Goat Mill Road Dowlais Merthyr Tydfil CF48 3TE
Received Not published
Not publishedP/23/0175
Detached dwelling and garage
Land Adjacent To 1 Edwards Terrace Bedlinog Treharris CF46 6RN
Received Not published
Not publishedP/23/0178
First floor extension
28 Winifred Street Dowlais Merthyr Tydfil CF48 3SD
Received Not published
Not publishedP/23/0171
Single storey side extension and new ramped access
72 Gurnos Road Gurnos Merthyr Tydfil CF47 9RA
Received Not published
Not publishedP/23/0172
Erection of garage, extension and retaining walls
2 Parkway Park Terrace Merthyr Tydfil CF47 8RH
Received Not published
Not publishedP/23/0174
Discharge of conditions 3 (site investigation),5 (retaining walls) and 12 (Construction and Ecological Management Plan) of planning permission P/20/0029
14 Gelligaer Road Trelewis Treharris CF46 6DN
Received Not published
Not publishedP/23/0182
Vary condition 2 of planning permission P/20/0121 to change the house types of plots no. 30 and 31, alter the orientation of plot 44 (including lowering of finished floor levels), and change house type of plot 42 including its subdivision into 2 semi-detached houses.
Land To The North Of Crabtree Walk And To The West Of Sweetwater Park Trefechan Merthyr Tydfil
Received Not published
Not publishedP/23/0177
Two storey side extension
26 Rocky Road Penydarren Merthyr Tydfil CF47 9JL
Received Not published

Records are ordered by application ID, not submission date. Use search to find a particular address or proposal.

View all applications

Researching a proposal in Merthyr Tydfil County Borough Council

Start with the address or application reference. Open a record to read the proposal, dates and available documents, then check the official register for the latest plans and consultation details. If nothing appears, check coverage before treating the result as a complete planning history.

Planning procedures in Wales differ from those in England. Use the authority’s own guidance for application requirements, comments and decision timescales.

How to search planning applications

Guides to planning records

All planning guides

Understanding planning · 13 min read
Planning application documents: what to read first
Understand planning application documents, officer reports and decision notices. Use a reading checklist, document table and worked example to inspect a case.
UK research
Published 16 Jul 2026Updated 13 Sept 2026
Understanding planning · 13 min read
Planning permission drawings: how to read plans
Read planning drawings, floor plans, elevations and sections. Use labelled diagrams, a drawing comparison table and revision checks to understand a proposal.
UK research
Published 6 Aug 2026Updated 13 Sept 2026
Property research · 13 min read
Planning approval rates: how to read council statistics
Understand planning approval rates with an interactive calculator, worked examples and comparison table. Check sample sizes, outcomes and coverage before comparing.
UK research
Published 13 Aug 2026Updated 13 Sept 2026

What these statistics cover

These figures describe applications collected by PlanningTrack for Merthyr Tydfil County Borough Council, across all dates currently available. They are a partial dataset, rather than an authority-wide performance measure. The date range does not establish continuous historical coverage.

The approval percentage is approved records divided by approved plus refused records. Pending, withdrawn and unknown outcomes are excluded. No percentage is shown until there is an approved or refused record.

Check collection coverage