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Planning applications in LL41

We hold 129 planning applications for the LL41 postcode area, 36 of them submitted in the past year. 87% of decided applications here were approved. A decision typically takes 78 days. The area is covered by Snowdonia, Gwynedd.

129
applications held
36
in the past year
87%
approved
78 days
median decision

Councils covering LL41

Snowdonia (112)Gwynedd (17)

Recent applications in LL41

Pending
Full
15 Sept 2026NP5/78/12E
Coed Cae Du, Trawsfynydd. LL41 4TNSnowdonia

Agricultural building

Pending
Householder Planning
24 Jun 2026C26/0377/03/DT
TŶ GWYN Ffordd Cwmorthin, Tanygrisiau, Blaenau Ffestiniog, Gwynedd, LL41 3SNGwynedd

Estyniad Cefn arfaethedig ac addasiadau cysylltiedig Proposed rear extension and associated alterations

Permitted
Small
Full
23 Jun 2026NP5/59/644F
Llety Fadog, Llan Ffestiniog. LL41 4PWSnowdonia

Installation of 2 replacement antennas and ancillary radio equipment on the existing lattice mast, together with the installation of 1 GPS module and 1 replacement equipment cabinet within the existing compound and associated ancillary development

Pending
Full
2 Jun 2026NP5/78/601
Arwel, Pen-y-Garreg, Trawsfynydd. LL41 4UBSnowdonia

Alterations

Permitted
Small
Full
1 Jun 2026NP5/73/LB74Y
Plas Dol-y-Moch, Maentwrog. LL41 3YTSnowdonia

Staff Accommodation

Permitted
Small
Full
1 Jun 2026NP5/73/LB74V
Plas Dol-y-Moch, Maentwrog. LL41 3YTSnowdonia

Five Wooden Shelters

Pending
Listed Building Consent
27 May 2026NP5/59/LB475M
T"}'r Wern, Llan Ffestiniog. LL41 4LSSnowdonia

Listed Building Consent to remove ventilation ducts

Pending
Full Planning
19 May 2026C26/0301/03/LL
Zip World Llechwedd,, Blaenau Ffestiniog,, LL41 3NBGwynedd

Atyniad twristiaeth newydd arfaethedig ar ffurf ‘Cartiau Gwyllt’ fel coaster a gyflenwir gan rym disgyrchiant, yn cynnwys codi trac rheilffordd yn gorwedd ar golofnau dur a strwythurau pont, gwaith peirianyddol i greu twneli, ynghyd â seilwaith cysylltiedig, ail-ddefnyddio adeilad presennol i ddarparu bae llwytho, codi adeilad newydd fel storfa sled coaster ac ail leoli bloc toiled presennol. Proposed new tourist attraction in the form of ‘Cartiau Gwyllt’ as a gravity-fed coaster, comprising the erection of a rail track supported on steel columns and bridge structures, engineering operations to create tunnels, together with associated infrastructure, reuse of existing building to provide a loading bay, erection of new building as coaster sled store and relocation of the existing toilet block.

Permitted
Small
Full
15 May 2026NP5/59/236F
Gwesty Seren, Llan Ffestiniog. LL41 4NSSnowdonia

Replace containers with timber structures

Pending
Full
14 May 2026NP5/78/608
Ty'n-y-Coed, Trawsfynydd. LL41 4UWSnowdonia

Extension

Permitted
Small
Full
22 Apr 2026NP5/59/L522G
Plas Blaenddol, Llan Ffestiniog. LL41 4PHSnowdonia

Driveway & access

Permitted
Small
Full
22 Apr 2026NP5/73/L184B
Gelli Dywyll, Cwm Cynfal, Llan Ffestiniog. LL41 4RASnowdonia

Replacement dwelling (Re-submission)

Pending
Lawful Development Certificate Existing/Proposed
27 Mar 2026C26/0196/03/TC
7 Heol Glynllifon, Blaenau Ffestiniog, Gwynedd, LL41 3AFGwynedd

Tystysgrif Cyfreithlon Defnydd arfaethedig ar gyfer dymchwel estyniad cefn ac amnewid gyda estyniad un llawr. Certificate of Lawful Use for the proposed removal of rear extension to be replaced with single storey extension.

Pending
Approval of Reserved Matters
24 Mar 2026C26/0189/03/RA
New Development Cae Clyd Road, Cae Clyd, Blaenau Ffestiniog, Gwynedd,Gwynedd

Cais i rhyddhau amod 13 o ganiatad C20/0757/03/AC / application to discharge condition 13 from planning consent C20/0757/03/AC

Permitted
Small
Full
18 Mar 2026NP5/59/721B
T"} Nant Y Beddau, Llan Ffestiniog. LL41 4PSSnowdonia

Change of use from Use Class C5 (Dwellinghouse used otherwise than as a sole or main residence), to a combined use as (1) a dwellinghouse and (2) a use falling within Use Class C6 (Dwellings used as short term lets)

Pending
Full Planning
12 Mar 2026C26/0169/03/LL
Land To The Rear Of Cambrian Terrace, CAMBRIAN TERRACE Glanypwll Road, Tanygrisiau, Gwynedd, LL41 3RTGwynedd

Cais o osod paneli solar ar ben cynhwysydd llongau presennol sy’n cael ei ddefnyddio fel gweithdy ynghyd a gosod pwmp gwresogi aer ar y cefn / Application to install an array of solar panels on top of an existing shipping container that is used as a workshop together with an air source heat pump to the rear.

Pending
Approval of Reserved Matters
3 Mar 2026C26/0135/03/RA
Shop, 21 Church Street, Blaenau Ffestiniog, Gwynedd, LL41 3HBGwynedd

Cais i rhyddhau amod 3 ac amod 5 o ganiatad C22/0130/03/LL / Application to discharge condition 3 and condition 5 from planning consent C22/0130/03/LL

Permitted
Small
Full
17 Feb 2026NP5/73/LB74X
Plas Dol-y-Moch, Maentwrog. LL41 3YTSnowdonia

Erection of single storey infill extension within existing kitchen wing courtyard and minor alterations

Permitted
Small
Listed Building Consent
17 Feb 2026NP5/73/LB74W
Plas Dol-y-Moch, Maentwrog. LL41 3YTSnowdonia

Listed Building Consent for the erection of single storey infill extension within existing kitchen wing courtyard along with minor alterations, and minor alterations to internal arrangement of dormitory and bathroom facilities on upper floors

Withdrawn
Small
Full
10 Feb 2026NP5/78/L114B
Ty'n Twll, Trawsfynydd. LL41 4TSSnowdonia

Restoration of the existing slate roof, installation of rooflights and construction of a new porch

Conditions
Small
Discharge of Conditions
6 Feb 2026NP5/78/LB412T
Rhiw Goch Inn, Bronaber, Trawsfynydd. LL41 4UYSnowdonia

Discharge Condition No.8 (programme of archaeological work) attached to Planning Consent NP5/78/LB7S dated 15/01/2021

Conditions
Small
Discharge of Conditions
6 Feb 2026NP5/78/LB412S
Rhiw Goch Inn, Bronaber, Trawsfynydd. LL41 4UYSnowdonia

Discharge Condition No.8 (programme of archaeological work) attached to Listed Building Consent NP5/78/LB7R dated 25/01/2021

Permitted
Small
Full
3 Feb 2026NP5/59/644E
Llety Fadog, Llan Ffestiniog. LL41 4PSSnowdonia

Installation of 2 no. replacement antenna and ancillary radio equipment at the existing lattice mast and the installation of 1 no. GPS Module, and 1 no. replacement equipment cabinet within compound along with ancillary development

Refused
Householder Planning
30 Jan 2026C26/0051/03/DT
Tŷ Gwyn Ffordd Cwmorthin, Tanygrisiau, Blaenau Ffestiniog, Gwynedd, LL41 3SNGwynedd

Estyniad cefn arfaethedig ac addasiadau cysylltiedig. Proposed rear extension and associated alterations

Conditions
Small
Full
21 Jan 2026NP5/59/53H
Land adjoining Arenig, Highgate, Llan Ffestiniog. LL41 4LLSnowdonia

Erection of detached single storey dwelling (Open Market)

Permitted
Medium
Full
2 Jan 2026NP5/73/287V
Decommissioning Site, Trawsfynydd. LL41 4DTSnowdonia

Installation of new underground cables, and cable sealing ends, shunt reactor, gantry and the widening of part of the existing access road within the fenced compound at Trawsfynydd substation and associated ancillary works as part of the Pentir to Trawsfynydd Reinforcement Project

Pending
Householder Planning
17 Dec 2025C25/0934/03/DT
Hafannedd Summerhill Terrace, Blaenau Ffestiniog, Gwynedd, LL41 3EQGwynedd

Estyniad deulawr cefn. Two-storey rear extension.

Conditions
Small
Discharge of Conditions
28 Nov 2025NP5/59/LB475L
Ty'r Wern (former St. Michael's Church), Llan Ffestiniog.Snowdonia

Discharge Part of Condition No.7 (methodology for relocating gate, methodology for protecting features during construction work, and sample of slate for auditorium floor) attached to Listed Building Consent NP5/59/LB475F dated 02/02/2024

Permitted
Medium
Full
24 Nov 2025NP5/73/LB27S
The Grapes Hotel, Maentwrog. LL41 4HNSnowdonia

Change of use of land to create additional car parking area, together with a new vehicular entrance from the existing car park and relocation of existing bins compound

Permitted
Small
Listed Building Consent
24 Nov 2025NP5/73/LB27T
The Grapes Hotel, Maentwrog. LL41 4HNSnowdonia

Listed Building Consent for formation of car park, together with the formation of a new vehicular entrance in the boundary wall of the existing car park

Refused
Small
Full
12 Nov 2025NP5/73/L184A
Gelli Dywyll, Cwm Cynfal, Llan Ffestiniog. LL41 4RASnowdonia

Demolition of established dwelling and lean to and the erection of a new 2 storey dwelling and installation of septic tank

Conditions
Small
Full
11 Nov 2025NP5/59/814A
Garreg Lwyd, Bont Newydd, Ffestiniog. LL41 4PTSnowdonia

Change of use from C5 dwellinghouse to dwellinghouse (C5) and commercial short-term letting accommodation (C6)

Conditions
Small
Discharge of Conditions
29 Oct 2025NP5/59/LB475K
Ty'r Wern (former St. Michael's Church), Llan Ffestiniog.Snowdonia

Discharge Part of Condition No.7 (methodology for relocating cross) attached Listed Building Consent NP5/59/LB475F dated 02/02/2024

Pending
Householder Planning
17 Oct 2025C25/0763/03/DT
Summerville, 89 Ffordd Wynne, Blaenau Ffestiniog, Gwynedd, LL41 3DWGwynedd

Estyniad deulawr i gefn yr eiddo. Two-storey extension to the rear of the property.

Conditions
Small
Discharge of Conditions
17 Oct 2025NP5/73/LB317K
Porth Gwyn, Tan Y Bwlch, Maentwrog, LL41 3YUSnowdonia

Discharge of Condition No. 4 (external paving) attached to Listed Building Consent NP5/73/LB317H dated 05/09/2024

Conditions
Small
Discharge of Conditions
17 Oct 2025NP5/73/LB317L
Porth Gwyn, Tan Y Bwlch, Maentwrog, LL41 3YUSnowdonia

Discharge Condition No.5 (external paving) attached to Planning Consent NP5/73/LB317J dated 19/09/2024

Conditions
Small
Full
17 Sept 2025NP5/78/122A
Feidiog, Station Road, Trawsfynydd. LL41 4TESnowdonia

Erection of a flat roof single storey extension to rear of property

Permitted
Small
Outline
5 Sept 2025NP5/73/440
Land opposite 1 & 2 Cefn Llys, Gellilydan. LL41 4EDSnowdonia

Outline application for the erection of a single detached dwelling (open market dwelling) with all matters reserved.

Pending
Approval of Details Reserved by Condition
2 Sept 2025C25/0637/03/RA
Llechwedd Slate Quarry, Blaenau Ffestiniog, LL41 3NBGwynedd

Cais ar gyfer rhyddhau amodau 6 (Rheolaeth llwch) ar ganiat â d cynllunio cyfeirnod 5/14/521 / Application to discharge condition 6 (Dust management) on planning permission 5/14/521

Pending
Approval of Details Reserved by Condition
2 Sept 2025C25/0638/03/RA
Llechwedd Slate Quarry, Blaenau Ffestiniog, LL41 3NBGwynedd

Cais ar gyfer rhyddhau amodau 8 (Larymau bagio cerbydau) ar ganiatâd cynllunio cyfeirnod C98M/0029/03/MW / Application to discharge condition 8 (Vehicle reversing alarm acoustics) on planning permission C98M/0029/03/MW

Conditions
Medium
Full
29 Aug 2025NP5/73/444A
The Old Tannery, Maentwrog. LL41 4HUSnowdonia

Pitched roof extension replacing existing flat roof extension

Conditions
Small
Full
22 Aug 2025NP5/73/1Z
9 Coed Camlyn, Maentwrog. LL41 4LBSnowdonia

Demolish existing concrete fuel shed, erect garage, construct glass balustrade, and change window to patio doors

Refused
Householder Planning
1 Aug 2025C25/0558/03/DT
TŶ GWYN Ffordd Cwmorthin, Tanygrisiau, Blaenau Ffestiniog, Gwynedd, LL41 3SNGwynedd

Estyniad cefn arfaethedig ac addasiadau cysylltiedig. Proposed rear extension and associated alterations.

Conditions
Small
Full
17 Jun 2025NP5/73/T274A
Arwel, 3 Bull Street, Maentwrog, LL41 4HNSnowdonia

Installation of solar panels on the front and rear elevation

Conditions
Small
Full
19 May 2025NP5/78/594
Cabin 282, Trawsfynydd Holiday Village, Bronaber. LL41 4YBSnowdonia

Erection of decking to front and side of cabin

Conditions
Small
Full
3 May 2025NP5/59/805B
Land near A496 junction to Manod, Rhyd-y-Sarn, Blaenau Ffestiniog. LL41 4BNSnowdonia

Formation of a temporary access and loading bay

Permitted
Lawful Development Certificate Existing/Proposed
26 Mar 2025C25/0244/03/TC
3, Fron Gadair Ffordd Manod, Manod, Blaenau Ffestiniog, Gwynedd, LL41 4ATGwynedd

Defnyddio eiddo fel llety gwyliau tymor byr (C6) Use of property a short-term holiday let (C6)

Conditions
Medium
Listed Building Consent
12 Feb 2025NP5/78/LB412N
The Bungalow, Rhiw Goch Inn, Bronaber. LL41 4UYSnowdonia

Listed Building Consent to cover existing flat roof with pitched roof to rear extension, replace existing render with stone cladding to match existing and replace a rear window with a door in a curtilage listed structure (re-submission)

Conditions
Medium
Full
12 Feb 2025NP5/78/LB412P
The Bungalow, Rhiw Goch Inn, Bronaber. LL41 4UYSnowdonia

Cover existing flat roof with pitched roof to rear extension, replace existing render with stone cladding to match existing, and to replace a rear window with a door in a curtilage listed structure (re-submission)

Conditions
Small
Discharge of Conditions
5 Feb 2025NP5/73/441C
Wern Meirch, Gellilydan. LL41 4RESnowdonia

Discharge Condition 3 (Roofing material) attached to Planning Permission NP5/73/441B dated 04/10/2024