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

2,336Searchable applications

0Recorded as pending

92%Approval rate · 2,088 approved or refused records

164Refused applications

1,924 approved · 164 refused · 87 withdrawn. Most recent record check: 11 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 Counts reflect the last collected status; some records may be out of date.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/20/0157
Conversion of first and second floor to provide 4 flats. Proposal to include siting of an external staircase and new entrance doors to first and second floor.
3 - 4 Pontmorlais High Street Merthyr Tydfil CF47 8UB
Received Not published
Not publishedP/20/0148
Construction of a detached garage for use by shop and erection of 2m high fence
104 High Street Cefn Coed Merthyr Tydfil CF48 2PN
Received Not published
Not publishedP/20/0169
Two storey rear extension
93 Beacon Heights Swansea Road Merthyr Tydfil CF48 1NN
Received Not published
Not publishedP/20/0210
Two storey side and rear extension
20 Jowett Avenue Twynyrodyn Merthyr Tydfil CF47 0SU
Received Not published
Not publishedP/20/0161
Change of use of ground floor offices to retail units (A1 Use)
Government Buildings Castle Street Merthyr Tydfil CF47 8TX
Received Not published
Not publishedP/20/0155
Proposed side extension
Redburn Christopher Terrace Merthyr Tydfil CF47 0UD
Received Not published
Not publishedP/20/0141
Convert 1st and 2nd floors from offices into 4, 1 bedroom flats, to include external alterations
51 And 52 Glebeland Street Merthyr Tydfil CF47 8AT
Received Not published
Not publishedP/20/0154
Two storey rear extension
46 Westwood Drive Treharris CF46 5BL
Received Not published
Not publishedP/20/0143
Construct rear single storey extension and rear dormer
Evedon 8 Martin Close Heolgerrig Merthyr Tydfil CF48 1TY
Received Not published
Not publishedP/20/0176
Convert existing 4 bedroom property (over ground and first floors) into a 1 bedroom flat at ground floor and a two bedroom flat at first floor (to include a second bedroom within the attic space) (C3 use class). External alterations to include the provision of two balconies to the rear and installation of new windows, doors and roof lights and front parking area
26 Courtland Terrace Union Street Merthyr Tydfil CF47 0DT
Received Not published
Not publishedP/20/0150
Two metre high timber fence (and gate) to side boundary
1 Old School Close Georgetown Merthyr Tydfil CF48 1DA
Received Not published
Not publishedP/20/0162
Renovation of building including new shopfronts, replacement of existing single storey rear extension with 2 storey extension. Change of use of first floor offices to two dwellings
1 Bargoed Terrace Treharris CF46 5RB
Received Not published
Not publishedP/20/0163
Change of use from tanning salon( Sui Generis) to a shop (A1 use)
49 Bridge Street Troedyrhiw Merthyr Tydfil CF48 4DX
Received Not published
Not publishedP/20/0172
Alter decked area to the front of the property to provide a larger concrete decked area
87 Mount Pleasant Cardiff Road Merthyr Vale Merthyr Tydfil CF48 4TB
Received Not published
Not publishedP/20/0174
Proposed erection of 2 Passivhaus dwellings, laundry/drying room and associated works
Land At Former Garage Site Glasier Road Twynyrodyn Merthyr Tydfil
Received Not published
Not publishedP/20/0168
Retention of 1 Passivhaus unit (to be used as an example only and not for residential purposes) with associated works
Ty Brychan 22 Lansbury Road Swansea Road Merthyr Tydfil CF48 1HA
Received Not published
Not publishedP/20/0166
Construction of granny annexe adjacent to existing garage
Pantycelyn Cherry Tree Way Trelewis Treharris CF46 6AT
Received Not published
Not publishedP/20/0156
Discharge of conditions 3 (surface water) and 4 (retaining walls) of Planning Permission P/18/0193
Land To The North Of Henry Richard Street Troedyrhiw Merthyr Tydfil
Received Not published
Not publishedP/20/0158
Installation of two fixed louvres to side of dwellings, retention of fencing and the raising of garden level
1 Pentwyn Villas Merthyr Tydfil CF47 8PJ
Received Not published
Not publishedP/20/0159
Retention of rear garden store building
17 Harlech Drive Castle Park Swansea Road Merthyr Tydfil CF48 1JU
Received Not published
Not publishedP/20/0165
Proposed conversion of domestic garage to form part of the adjacent dental surgery. Works to include a new pitched roof and a front parapet wall
Cyfarthfa Dental Surgery Rookwood House Gwaelodygarth Lane Gwaelodygarth Road Merthyr Tydfil CF47 8EX
Received Not published
Not publishedP/20/0180
Construction of rear escape staircase and landing
73 Pontmorlais High Street Merthyr Tydfil CF47 8UN
Received Not published
Not publishedP/20/0173
Construct two storey rear extension and extend front canopy
20 Oakfield Street Aberfan Merthyr Tydfil CF48 4QB
Received Not published
Not publishedP/20/0178
Proposed front deck
13 Darren Las Merthyr Vale Merthyr Tydfil CF48 4SZ
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