CEFN CASTELL, Llanystumdwy, Criccieth, Gwynedd, LL52 0SA

This site has had 2 applications since 2025.

• C25/0610/41/LL Status unknown

  Cefn Castell, Llanystumdwy, Criccieth, Gwynedd, LL52 0SA

  Gwaith sefydlogi clogwyn yn dilyn tirlithriad oherwydd dŵr o ddraen tir ac erydiad naturiol. Y gwaith i gynnwys rhagfur o greigiau a hoelio i’r pridd. Cliff stabilisation works following landslip due to water from land drain and natural erosion. Works to involve use of rock revetment and soil nailing.

  Submitted 27 Aug 2025 Full applications

1. 27 Aug 2025

   Received by Gwynedd

2. 6 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 22 October 2025, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

The published feed does not show a live status for this application; the register on Gwynedd's own portal holds the authoritative version.

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.

• Ynys Gain Bach, YNYS GAIN, Llanystumdwy, Criccieth, Gwynedd, LL52 0SA

  C26/0348/41/TC Submitted 9 Jun 2026 50 yards away

  Cais am Dystysgrif Datblygiad Cyfreithlon ar gyfer defnydd llety gwyliau tymor byr (C6) / Application for a Certificate of Lawful Development for use as short-term lets (C6)

  Decided Lawful development

• Cefn Castell, Llanystumdwy, Criccieth, Gwynedd, LL52 0SA

  C25/0610/41/LL Submitted 27 Aug 2025 50 yards away

  Decision due ~22 Oct

  Gwaith sefydlogi clogwyn yn dilyn tirlithriad oherwydd dŵr o ddraen tir ac erydiad naturiol. Y gwaith i gynnwys rhagfur o greigiau a hoelio i’r pridd. Cliff stabilisation works following landslip due to water from land drain and natural erosion. Works to involve use of rock revetment and soil nailing.

  Status unknown Full applications

• Fferm Bron Eifion, Llanystumdwy, Gwynedd, LL52 0SA

  C25/0868/41/LL Submitted 27 Nov 2025 50 yards away

  Codi adeilad amaethyddol dros storfa silwair/buarth fferm presennol. Erection of an agricultural building over an existing silage store/farmyard

  Granted Full applications

• 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

  Received 30 Jun, published by the council 6 Aug 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

  Received 25 Jun, published by the council 6 Aug 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.

  Received 24 Jun, published by the council 6 Aug 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.

  Received 24 Jun, published by the council 6 Aug 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.

  Received 22 Jun, published by the council 6 Aug 2026 Full applications