Castell, Cilan, Pwllheli, Gwynedd, LL53 7DD

This site has had 2 applications since 2025: 2 approved, 0 refused.

• C26/0028/39/DT Granted

  Castell, Cilan, Pwllheli, Gwynedd, LL53 7DD

  Cais i waredu to gwastad cefn presennol a chodi estyniad gyda tho crib, ail rendro a gosod ffenestri newydd / Application to remove an existing rear flat roof, construct a new extension with pitch roof, re render and install new windows.

  Submitted 19 Jan 2026 Householder

1. 28 Nov 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 lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• Castell, Cilan, Pwllheli, Gwynedd, LL53 7DD

  C26/0028/39/DT Submitted 19 Jan 2026 0m away

  Cais i waredu to gwastad cefn presennol a chodi estyniad gyda tho crib, ail rendro a gosod ffenestri newydd / Application to remove an existing rear flat roof, construct a new extension with pitch roof, re render and install new windows.

  Granted Householder Extension Windows or glazing
  Domestic

• Granari, Ysgubor Hen, Cilan, Pwllheli, Gwynedd, LL53 7DD

  C25/0613/39/RC Submitted 20 Aug 2025 0m away

  Cais i ddiwygio cytundeb 106 oddi wrth ganiatâd cynllunio rhif C18/1163/39/RC. Application to modify 106 agreement from planning permission reference C18/1163/39/RC.

  Refused Conditions

• Granari, Ysgubor Hen, Cilan, Pwllheli, Gwynedd, LL53 7DD

  C25/0579/39/LL Submitted 14 Aug 2025 0m away

  Newid defnydd eiddo o ddefnydd llety gwyliau tymor byr (Dosbarth C6) i dy anedd defnyddir fel prif gartref (Dosbarth C3) Proposed change of use of property from short term let (Class C6) to dwellinghouse used as a main residence (Class C3)

  Refused Full applications
  Domestic

• C26/0348/41/TC Decided

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

  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)

  9 Jun 2026 Lawful development
• C26/0295/20/TC Status unknown

  CROESOR Tan Y Maes, Y Felinheli, Gwynedd, LL56 4UQ

  Lleoli catref symudol at defnydd ategol i'r prif dy annedd. Siting of a mobile home for ancillary use to the main dwellinghouse.

  12 May 2026 Lawful development
• C26/0250/09/TC Status unknown

  OLD BAKERY COTTAGE High Street, Tywyn, Gwynedd, LL36 9AE

  Cais am Dystysgrif Datblygiad Cyfreithlon ar gyfer Defnydd presennol cyn Fecws yn dy annedd (Dosbarth Defnydd C3) Application for a Lawful Development Certificate for the existing use of a former Bakery as a dwelling house (C3 Use Class)

  20 Apr 2026 Lawful development
• C26/0229/17/TC Status unknown

  FFERM FRON DIRION GANOL, Cilgwyn, Caernarfon, Gwynedd, LL54 7SE

  Tystysgrif Datblygiad Cyfreithlon ar gyfer gosod tyrbin gwynt arunig o fewn cwrtil tŷ annedd. Lawful Development Certificate for the proposed installation of a stand alone wind turbine within the curtilage of a dwellinghouse.

  9 Apr 2026 Lawful development
• C26/0211/25/TC Status unknown

  Nyth Bach, Tyddyn Hir, Caerhun, Bangor, Gwynedd, LL57 4DU

  Cais am Dystysgrif Datblygiad Cyfreithlon ar gyfer defnydd anecs Nyth Bach, Caerhun, Bangor, LL57 4DU fel uned preswyl ar wahân (C3) am gyfnod parhaus a di-dor o 10 mlynedd, yn groes I gofynion amod 2 o ganiatâd Cynllunio C10A/0112/25/LL Application for a Lawful Development Certificate for the use of the annex known as Nyth Bach, Caerhun, Bangor, LL57 4DU as a separate residential unit (C3) for a continuous and uninterrupted period of 10 years, contrary to the requirements of condition 2 of planning permission C10A/0112/25/LL

  1 Apr 2026 Lawful development