Council hub · Wales
Merthyr Tydfil planning applications
651 applications. 91% approved. 46 days to decide.
As of September 2026, PlanIndex holds 651 planning applications from Merthyr Tydfil. 241 were decided in the trailing 12 months, with 91% of clear-cut outcomes approved.
Merthyr Tydfil takes a median of 46 days to decide a planning application, ranking 11 of 148 UK councils. See how that compares.
All applications
Newest first · page 1 of 14
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P/26/0198 Awaiting decision
Land To The South Of Cyfarthfa Retail Park Swansea Road Merthyr Tydfil CF48 1HY
Non-material amendment to two EV charging spaces as standard parking spaces
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P/26/0197 Awaiting decision
Rear Of Six Bells Heolgerrig Merthyr Tydfil CF48 1RP
Construction of four detached houses and new access road
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P/26/0196 Awaiting decision
12 Fairview Terrace Twynyrodyn Merthyr Tydfil CF47 0RL
Rear infill single storey extension, raise existing rear extension roof, and new doors to side elevation. Construction of detached garden room.
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P/26/0194 Status unknown
114 High Street Merthyr Tydfil CF47 8AP
Change of use of Ground floor to A3 use and 1st 2nd &3rd floors to 2 self contained flats
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P/26/0195 Awaiting decision
Trefechan Nursery Rowan Rise Trefechan Merthyr Tydfil CF48 2EW
Demolition of existing nursery and erection of 4 No. three bedroom dwellings with access and parking
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P/26/0199 Awaiting decision
Deepdene Brewery Lane Cefn Coed Merthyr Tydfil CF48 2LP
Construct single storey extension to the side of the property
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P/26/0193 Status unknown
The Rose Retreat Spa Cyfarthfa Park Merthyr Tydfil CF47 8RE
Discharge of conditions 5 (historic environment mitigation) and 9 (Landscape and Ecological Management Plan) of planning permission P/26/0041
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P/26/0192 Awaiting decision
Quakers Yard Railway Station Taff Vale Estate Edwardsville Treharris CF46 5NJ
Variation of conditions 1 and 3 of permission P/24/0033 to amend the landscaping scheme and works to the platform.
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P/26/0191 Awaiting decision
6 Holford Street Cefn Coed Merthyr Tydfil CF48 2RN
First Floor Extension above existing ground floor extension.
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P/26/0190 Awaiting decision
1 St Marys Close Merthyr Tydfil CF47 8YS
Erect a storm porch to front elevation and replacement of roof over study area
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P/26/0176 Awaiting decision
36 Berry Square Dowlais Merthyr Tydfil CF48 3AL
Erection of two storey side extension, repositioning of parking area and access, with associated engineering works, alterations, including a cross over/driveway over adjoining land.
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P/26/0189 Awaiting decision
National Grid Electricity Distribution South Wales Dowlais Grid Substation Pengarnddu Dowlais Merthyr Tydfil
Removal of the existing tower and installation of new tower with new antennas and transmission dishes, emergency back up generator, cable gantry, feeder cables and associated access track, etc.
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P/26/0188 Granted
32 Cilhaul Treharris CF46 5HT
Non-material amendment to planning permission P/25/0336 to re-position the first floor en-suite window from the side elevation to the rear elevation
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P/26/0187 Granted
4 Chapel Row Georgetown Merthyr Tydfil CF48 1BN
Discharge of condition 9 (biodiversity enhancement) of planning permission P/25/0308 for the installation of a ventilation system and refurbishment of Joseph Parry Cottage including, sand blast floor and ceiling, decorate the walls, new rear door, new accessible toilet, new vinyl floor, refurbish all windows including secondary glazing and new re-lay flag stones
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P/26/0138 Awaiting decision
Ffostyll 18 The Hawthorns Pant Merthyr Tydfil CF48 2EJ
Demolish existing conservatory and construct a single storey rear extensions
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P/26/0186 Awaiting decision
Land South Of Cyfarthfa Retail Park Swansea Road Merthyr Tydfil CF48 1HY
Installation of 3x fascia signs; a roof mounted projecting sign; a pole sign; a height barrier sign; exit, waiting bay and directional signs; a banner sign and 2 digital menu signs, (Advertisement)
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P/26/0185 Awaiting decision
Travel Inn Duffryn Road Pentrebach Merthyr Tydfil CF48 4BB
Provision of Bin Store
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P/26/0184 Awaiting decision
Evans Halshaw Ltd Pentrebach Road Merthyr Tydfil CF48 1YA
Display an array of adverts to the front and side of the premises
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P/26/0183 Granted
Penrhadw Farm Vaynor Road Pontsticill Merthyr Tydfil CF48 2TU
Proposed refurbishment and expansion of existing guest accommodation and associated works
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P/26/0181 Awaiting decision
Jah Jireh Care Home Heads Of The Valleys Road Merthyr Tydfil CF44 0LX
Variation of condition 4 of planning permission P/25/0196 to indicate the maximum number of bed spaces accommodated within the care home shall not exceed 56
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P/26/0182 Awaiting decision
Car Park Cyfarthfa Retail Park Swansea Road Merthyr Tydfil CF48 1HY
Two freestanding non-illuminated directional signs
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P/26/0180 Awaiting decision
St Marys Roman Catholic Primary School Caedraw Road Merthyr Tydfil CF47 8HA
Widen existing vehicular access off Caedraw Road
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P/26/0179 Awaiting decision
54 Council Street Penydarren Merthyr Tydfil CF47 9DJ
Install solar photo-voltaic panels on to the principal roof slope
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P/26/0178 Status unknown
Land Adjacent To Hillcrest And Mitchell Crescent Penydarren Merthyr Tydfil
Discharge of conditions 12 (Ecological Enhancements) and 17 (Affordable Housing) of planning permission P/25/0223 relating to a residential development.
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P/26/0177 Awaiting decision
Car Park Rear Of Civic Centre Glebeland Place Merthyr Tydfil CF47 8BH
Installation of solar photovoltaic car ports over part of the existing Abermorlais car park.
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P/26/0094 Granted
Welsh Assembly Government Rhydycar Business Park Merthyr Tydfil CF48 1UZ
Proposed installation of additional solar PV panels and associated infrastructure on the roof of the existing office building and energy centre building.
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P/26/0174 Granted
Car Park At Hornbeam Close Gurnos Merthyr Tydfil CF47 9BW
Discharge of condition 3 (landscaping scheme) of planning permission P/25/0285 The erection of Passivhaus modular residential units, laundry, bin store, landscaping, parking and associated works
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P/26/0173 Awaiting decision
148 High Street Merthyr Tydfil CF47 8DP
Vary of Condition 2 of planning permission P/24/0206 to allow for the increased depth of the rear extension to enable the incorporation of an internal lift
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P/26/0175 Status unknown
Land Adjacent To Hillcrest And Mitchell Crescent Penydarren Merthyr Tydfil
Discharge of conditions 4 (Construction Traffic Management Plan) and 11 (Construction Environment Management Plan) of planning permission P/25/0223 relating to a residential development.
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P/26/0165 Granted
Bishop Hedley High School Gwaunfarren Road Penydarren Merthyr Tydfil CF47 9AN
Non-material amendment to planning permission P/23/0131 relating to the layout of the building associated with the plant area.
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P/26/0164 Granted
Bishop Hedley High School Gwaunfarren Road Penydarren Merthyr Tydfil CF47 9AN
Discharge of Conditions 7 (Contamination Remediation) and 11 (Ground Stability) of planning permission P/23/0131.
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P/26/0172 Granted
39 Maple Crescent Trefechan Merthyr Tydfil CF48 2EH
Engineering works to lower ground level to create patio area and enable the construction of a single storey rear extension and alterations
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P/26/0171 Awaiting decision
1 Milbourne Close Twynyrodyn Merthyr Tydfil CF47 0UH
Two storey rear extension incorporating a rear dormer.
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P/26/0170 Awaiting decision
Land Adjacent To Hillcrest And Mitchell Crescent Penydarren Merthyr Tydfil
Discharge of Condition 9 (Invasive Non-Native Species Strategy) of planning permission P/25/0223 relating to a residential development.
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P/26/0169 Granted
4 Bryntirion Street Dowlais Merthyr Tydfil CF48 3RY
Discharge of condition 3 (Ecological enhancement) of planning permission P/26/0112
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P/26/0167 Granted
18 Anthony Hill Court Pentrebach Merthyr Tydfil CF48 4AZ
First floor side extension with other alterations
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P/26/0168 Granted
2 Parc Wenallt Treharris CF46 5HX
Discharge condition 3 (planting scheme) of planning permission P/26/0024
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P/26/0166 Granted
31 Rocky Road Penydarren Merthyr Tydfil CF47 9JL
Non material amendment to planning permission P/25/0326 to extend platform to the front of dwelling and extension and replace front window with double doors
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P/26/0160 Granted
Cefn Fforest Farm Twynygarreg Treharris CF46 5RN
Prior Notification for demolition works
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P/26/0161 Awaiting decision
Cefn Fforest Farm Twynygarreg Treharris CF46 5RN
Lawful Development Certificate for proposed assorted extensions and works
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P/26/0163 Granted
15 & 16 Briarmead Penydarren Merthyr Tydfil CF47 9BZ
Routine maintenance to 2 no. lime trees involving pollarding of the trees
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P/26/0162 Awaiting decision
20 Williams Terrace Treharris CF46 5HH
First floor rear extension
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P/26/0158 Awaiting decision
Pentrebach House Duffryn Road Pentrebach Merthyr Tydfil CF48 4BB
Internal and external refurbishment works to include new lighting, repair works, siting of new walk in unit, new enclosures and other associated works (FUL)
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P/26/0159 Awaiting decision
Pentrebach House Duffryn Road Pentrebach Merthyr Tydfil CF48 4BB
Internal and external refurbishment works to include new lighting, repair works, siting of new walk in unit, new enclosures and other associated works (LBC)
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P/26/0154 Granted
11 Linden Way Trefechan Merthyr Tydfil CF48 2EL
Two storey side extension
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P/26/0156 Granted
Ysgol Rhyd Y Grug Primary School Aberfan Crescent Aberfan Merthyr Tydfil CF48 4NT
Discharge condition 10 (Construction Traffic Management Plan) of planning permission P/25/0048.
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P/26/0157 Granted
Land To The North Of The Heads Of The Valleys Road Off Rhymney Common Road Dowlais Merthyr Tydfil CF48 2YG
Discharge of condition 5 (Lighting) of planning permission P/25/0265
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P/26/0153 Granted
1 Vulcan Court Vulcan Road Merthyr Tydfil CF47 8LZ
Replace existing timber front door, frame and side screens with an exact copy in laminated timber to match original in style and colour. (Listed Building Consent)
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P/26/0155 Awaiting decision
Plots 5 Pengarnddu Industrial Estate Dowlais Merthyr Tydfil CF48 2TA
Change of Use of a building used for the storage of waste, plant and equipment to a renewable energy facility, including the construction of flue and ancillary works
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P/26/0152 Awaiting decision
Station House Rhymney Common Road Dowlais Merthyr Tydfil CF48 2YG
Discharge of conditions 6 (Landscaping), 18 (retaining walls) and part discharge of condition 19 (boundary treatments) of planning permission P/25/0265
Recent decisions
Data to September 2026
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P/25/0245 Granted
Land At Springfield Rise Treharris
Discharge of conditions 3 (Material Finishes) and condition 4 (Retaining Works) of planning permission P/22/0298 relating to a residential scheme.
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P/26/0167 Granted
18 Anthony Hill Court Pentrebach Merthyr Tydfil CF48 4AZ
First floor side extension with other alterations
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P/26/0119 Granted
Land To The North Of Goitre Lane Merthyr Tydfil
Discharge of conditions 3,7,8,11,14 & 17 of permission P/26/0060
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P/26/0123 Granted
Ynys Dawel High Street Caeharris Dowlais Merthyr Tydfil CF48 3HB
Side and rear extensions to dwelling and widening of existing access into the site
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P/26/0188 Granted
32 Cilhaul Treharris CF46 5HT
Non-material amendment to planning permission P/25/0336 to re-position the first floor en-suite window from the side elevation to the rear elevation
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P/26/0183 Granted
Penrhadw Farm Vaynor Road Pontsticill Merthyr Tydfil CF48 2TU
Proposed refurbishment and expansion of existing guest accommodation and associated works
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P/26/0029 Granted
Plot 4 Oakland Business Park Bogey Road Mountain Hare Merthyr Tydfil CF48 4AP
Change of use and siting of 52 no storage containers
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P/26/0068 Granted
Gethin Woodland Centre A470 Pentrebach To Rhydycar Northbound Abercanaid Merthyr Tydfil CF48 1YZ
To resurface with tarmac the uplift track that currently serves Bike Park Wales
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P/26/0172 Granted
39 Maple Crescent Trefechan Merthyr Tydfil CF48 2EH
Engineering works to lower ground level to create patio area and enable the construction of a single storey rear extension and alterations
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P/26/0094 Granted
Welsh Assembly Government Rhydycar Business Park Merthyr Tydfil CF48 1UZ
Proposed installation of additional solar PV panels and associated infrastructure on the roof of the existing office building and energy centre building.
The full record
Decisions between 2019 and 2026
PlanIndex holds 539 decisions from Merthyr Tydfil between 2019 and 2026, part of 651 applications on record. Over that period 92% of clear-cut outcomes were approvals, 468 granted against 42 refused. The busiest single year was 2026, with 212 applications recorded.
The trailing-year figures above track current activity. This record reaches back further, so a decision here may predate the online portal; each application still has its own page with the source link.
From the archive
Earliest records shown in full
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P/19/0327 Granted
49 Cottrell Street Aberfan Merthyr Tydfil CF48 4QU
Single storey rear extension
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P/19/0272 Granted
Land North Of Pant Industrial Estate Bryniau Road Pant Merthyr Tydfil
Non material amendment to planning permission P/18/0392 to vary the approved scale parameters
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P/19/0282 Granted
Brynglas Somerset Lane Cefn Coed Merthyr Tydfil CF48 2PA
Discharge of condition 3 (materials) of planning permission P/19/0125
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P/19/0271 Granted
Unit 7 & 7B Pant Industrial Estate Pant Merthyr Tydfil CF48 2SR
Erect three fascia signs
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P/19/0278 Granted
Prince Charles Hospital Gurnos Road Gurnos Merthyr Tydfil CF47 9DT
Discharge condition 3 (material details) of planning permission P/19/0012
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P/19/0291 Granted
Wilko St Tydfil Shopping Centre Merthyr Tydfil CF47 8EG
Application for non material amendment to planning application P/18/0355 to alter the external staircase configuration
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P/19/0276 Granted
School Bungalow Market Street Dowlais Merthyr Tydfil CF48 3HW
Change of use of school bungalow into an education facility. Proposal to include access ramp and new window to south facing elevation of building
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P/19/0216 Refused
Land Adjacent To 1A Blaen Dowlais Dowlais Merthyr Tydfil
Erection of a pair of semi detached dwellings with off road parking
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P/19/0262 Granted
36 Alma Street Dowlais Merthyr Tydfil CF48 3RP
Single storey extension
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P/19/0292 Refused
Park Lodge Bungalow Queens Road Twynyrodyn Merthyr Tydfil CF47 0ES
Dormer conversion comprising an increase in roof ridge height with front and side dormers, introduction of Juliette balcony and construction of a front conservatory
Decision speed
12 months to September 2026, where both dates are published
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Within 8 weeks the statutory target for most applications 175 73%
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8 to 13 weeks the target band for major development 28 12%
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Over 13 weeks often extended by agreement 38 16%
Planning agents in Merthyr Tydfil
The firms named as agent on the most applications on this register. Company information only.
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3dcadwales Limited 82% granted overall 11
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Davies Sutton Architects 91% granted overall 1
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Milsom Architectural Services 89% granted overall 1
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Applications by ward in Merthyr Tydfil
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Applications by postcode district
Common questions
How many planning applications does Merthyr Tydfil decide?
In the 12 months to September 2026, Merthyr Tydfil decided 241 planning applications. 91% of clear-cut outcomes were approvals.
How long does a planning decision take in Merthyr Tydfil?
The median time from a planning application being received to a decision was 46 days over the 12 months to September 2026. Individual cases vary with complexity and consultation responses.
How many Merthyr Tydfil decisions arrive within the eight week target?
Of the 241 decisions in the 12 months to September 2026 where both dates are published, 73% came within eight weeks of the application being received, and 84% within thirteen weeks.
How many planning applications has Merthyr Tydfil decided in total?
PlanIndex holds 539 decisions from Merthyr Tydfil between 2019 and 2026, out of 651 applications on record. Across that whole period 92% of clear-cut outcomes were approvals.
When is planning activity busiest in Merthyr Tydfil?
November 2025 was the busiest month across the 12 months to September 2026, with 39 applications recorded. The monthly pattern is listed on this page.
How do I find a planning application by its reference number?
Every application indexed here has its own page at a stable address. Look the reference up in a search engine together with the council name, or browse the latest applications below. Each page shows the description, address, dates and decision as the council published them.
Where can I see the full documents for an application?
Plans, drawings and officer reports stay on Merthyr Tydfil's own planning portal. Every application page here links straight to the source record.
Cite these figures
Click the text to select the whole citation.
Merthyr Tydfil: 651 planning applications on record as of September 2026. Trailing 12 months: 241 decided, 91% approved, median 46 days to a decision. 250 new applications received in the same period. Decisions on record run between 2019 and 2026: 539 in total, 92% approved. Source: PlanIndex, planindex.co.uk.