1 Plas Newydd Deganwy Conwy LL31 9UF

1. 6 Jul 2021

   Received by Conwy

2. 9 Jul 2021

   Validated

   Checked as complete and ready for consideration.

3. 31 Aug 2021

   Decision issued: Approved

4. 25 Aug 2026

   Added to PlanIndex

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within five years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 15 Plas Newydd Deganwy LL31 9UA

  0/48522 Submitted 26 May 2021 61m away

  Non material amendment to planning approval 0/48053 (Single storey rear extension under a flat roof Removal of a window and insertion of French doors to front elevation) to allow for changes to approved plans

  Granted Amendments Extension Windows or glazing 9 docs
  Small domestic

• 12 Plas Newydd Deganwy LL31 9UA

  0/50450 Submitted 6 Feb 2023 63m away

  Proposed Juliet balcony to front elevation of dwelling

  Granted Full applications 6 docs
  Domestic

• 1 Sea View Cottages, Glan Y Mor Road, Deganwy, LL31 9TT

  0/48705 Submitted 19 Jul 2021 98m away

  Proposed Balcony over flat roof

  Granted Full applications 9 docs

• 11 Warren Road Deganwy LL31 9SU

  0/53464 Submitted 9 Jun 2026 116m away

  86% historically approved · decision due ~13 Aug

  First floor side extension to form bedroom and bathroom

  Awaiting decision Full applications Extension 10 docs

• 52 Warren Drive Deganwy LL31 9SY

  0/46819 Submitted 24 Oct 2019 125m away

  Non material amendment to planning consent 0/46417 (Proposed New balcony to front and small dormer to side.) to alow for amended plans

  Granted Amendments Loft or dormer 5 docs

• 32A Ty Mawr Road Deganwy LL31 9UB

  0/46189 Submitted 29 Mar 2019 151m away

  Erection of decking to the middle and lower levels of the garden to the rear

  Granted Full applications 13 docs

• 0/53503 Granted

  Palo Seco 51 Pen Y Bryn Road Upper Colwyn Bay Colwyn Bay Conwy LL29 6AG

  Certificate of Lawfulness for the proposed construction of a single storey detached garden room and ancillary facilities ancillary to existing dwelling

  29 Jun 2026 Lawful development
• 0/53453 Granted

  4 Trem Yr Afon Llandudno Junction Conwy LL31 9AG

  Certificate of lawful development for the existing use of Class C1 Guest House to a C3 dwelling

  13 Feb 2026 Lawful development
• 0/53631 Awaiting decision

  Hyfrydle St Beuno's Road Great Orme Llandudno LL30 2JU

  Certificate of Lawfulness for the proposed change of fenestration to the rear elevation of the existing dwellinghouse.

  18 Aug 2026 Lawful development
• 0/53639 Awaiting decision

  5 Rhiw Road Colwyn Bay LL29 7TE

  Certificate of Lawfulness for the proposed replacement of existing vertical boiler flue to the principal elevation roof

  12 Aug 2026 Lawful development
• 0/53466 Granted

  Land South of Gwellyn Avenue Gwellyn Avenue Kinmel Bay Rhyl LL18 5HR

  Certificate of lawfulness for an existing use of the land for B8 (Storage and Distribution) and Sui Generis (Caravan Storage)

  9 Jun 2026 Lawful development