DENBIGH HOUSE, 36 High Street, Llanberis, Gwynedd, LL55 4EU

1. 16 Oct 2025

   Received by Gwynedd

2. 6 Aug 2026

   Added to PlanIndex

Gwynedd granted permission, subject to any conditions on the decision notice. Work must normally begin within five years or the permission lapses. More in our guide to what happens after a planning decision.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 7 Rock Terrace, Llanberis, Caernarfon, Gwynedd, LL55 4LA

  C26/0029/15/AC Submitted 20 Jan 2026 206m away

  Cais i ddiwygio amod 2 (Cynlluniau a gymeradwywyd) o ganiatâd C25/0424/15/DT, ar gyfer estyniad cefn llawr cyntaf, er mwyn caniatáu diwygiad i’r dyluniad i godi uchder to’r estyniad i 5.11m. Application to amend condition 2 (Approved plans) of planning permission C25/0424/15/DT, for a First floor rear extension, to allow an amendment to the design to raise the roof hight of the extension to 5.11m.

  Granted Amendments Extension

• Land Adjacent To 10 Warden Street, Llanberis, LL55 4HP

  C25/0927/15/LL Submitted 16 Dec 2025 238m away

  Codi annedd newydd Erection of new dwelling

  Decided Full applications New dwelling
  Domestic

• Land Adjacent To 10 Warden Street, Llanberis, LL55 4HP

  C26/0238/15/LL Submitted 16 Apr 2026 238m away

  Decision due ~11 Jun

  Codi ty annedd newydd. Erection of new dwelling

  Status unknown Full applications New dwelling
  Domestic

• 1 Fron Deg Terrace, Llanberis, Caernarfon, Gwynedd, LL55 4HR

  C25/0926/15/LL Submitted 15 Dec 2025 254m away

  Codi annedd deuluol. Erection of family dwelling.

  Refused Full applications
  Domestic

• ANFIELD, 4 Coed Y Ddôl, Llanberis, Caernarfon, Gwynedd, LL55 4EG

  C25/0617/15/DT Submitted 1 Sep 2025 334m away

  Tynnu ystafell wydr u-pvc a chodi estyniad unllawr â tho fflat yn ei le. Removal of u-pvc conservatory & erection of single storey flat roofed extension in lieu.

  Granted Householder Extension
  Small domestic

• C26/0392/09/LL Status unknown

  THE VICTORIA-N-SLIPWAY Marine Parade, Tywyn, Gwynedd, LL36 0DG

  Estyniad i Dŷ Tafarn ynghyd â gwaith allanol cysylltiedig / Extension to Public House and associated external works

  30 Jun 2026 Full applications
• C26/0380/18/LL Status unknown

  FFERM TAN Y DDERWEN, Llanddeiniolen, Caernarfon, Gwynedd, LL55 3AP

  Codi sied amaethyddol ar gyfer storio offer a pheiriannau Erection of an agricultural shed for the storage of implements and machinery

  25 Jun 2026 Full applications
• C26/0378/09/LL Status unknown

  Land At Pendre Enterprise Park, Tywyn, LL36 9LW

  Codi ffens derfyn, giatiau, trac mynediad ac adeilad storio peiriannau, ynghyd a gosod 3 cynhwysydd llongau 40 troedfedd i bwrpas storio / Erection of perimeter fencing, gates, access track and plant storage building, and siting of 3no. 40ft shipping containers for storage.

  24 Jun 2026 Full applications
• C26/0376/45/LL Status unknown

  PLAS HELI Glan Y Don Industrial Estate, Pwllheli, Gwynedd, LL53 5YT

  Adeiladu bloc toiledau a chawodydd arfaethedig yn plas Heli / Construction of proposed toilet and shower block at Plas Heli.

  24 Jun 2026 Full applications
• C26/0372/41/LL Status unknown

  Harlech Frozen Foods, HARLECH FROZEN FOODS Dwyfor Food Park, Llanystumdwy, Criccieth, Gwynedd, LL52 0LJ

  Codi adeilad storio dros dro i ddarparu ar gyfer cynnydd dros dro yn y galw am gynhyrchion. / Erection of a temporary storage building to accommodate a temporary increase in demand for products.

  22 Jun 2026 Full applications