12 Llewelyn Circle Mayhill Swansea SA1 6SN

This site has had 3 applications since 2026: 1 approved, 1 refused.

• 2026/0638/PLD Granted

  12 Llewelyn Circle Mayhill Swansea SA1 6SN

  Demolition of existing rear conservatory and construction of a single storey rear extension with pitched roof and patio doors (application for a Certificate of Proposed Lawful Development)

  Decided 24 Apr 2026 Lawful development
• 2026/0202/PRE Decided

  12 Llewelyn Circle Mayhill Swansea SA1 6SN

  Pre-application enquiry - Proposed removal of existing single storey rear conservatory. Proposed permitted single storey flat roof extension with skylight to replace conservatory.

  Decided 26 Feb 2026 Other

1. 2 Mar 2026

   Received by Swansea

2. 3 Mar 2026

   Validated

   Checked as complete and ready for consideration.

3. 24 Mar 2026

   Decision issued: Is Not Lawful (proposed)

4. 28 Jul 2026

   Added to PlanIndex

Swansea refused this application for the reasons on the decision notice; only the applicant can appeal, and refused schemes often return in revised form. 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.

• 12 Llewelyn Circle Mayhill Swansea SA1 6SN

  2026/0638/PLD Submitted 20 Apr 2026 0m away

  Demolition of existing rear conservatory and construction of a single storey rear extension with pitched roof and patio doors (application for a Certificate of Proposed Lawful Development)

  Granted Lawful development Extension Demolition +1 10 docs
  Small domestic

• 12 Llewelyn Circle Mayhill Swansea SA1 6SN

  2026/0202/PRE Submitted 6 Feb 2026 0m away

  Pre-application enquiry - Proposed removal of existing single storey rear conservatory. Proposed permitted single storey flat roof extension with skylight to replace conservatory.

  Decided Other Extension 6 docs
  Small domestic

• 4 Tan Y Marian Road Mayhill Swansea SA1 6SW

  2024/1573/FUL Submitted 16 Aug 2024 130m away

  Single story rear extension, ground floor W/C

  Granted Full applications Extension 12 docs

• 3 Nicander Parade Mayhill Swansea SA1 6TX

  2026/0961/FUL Submitted 8 Jun 2026 133m away

  Two storey side extension, single storey rear extension, and front bay window, front canopy and associated works

  Granted Full applications Extension Windows or glazing 12 docs
  Small domestic

• 3 & 4 Nicander Parade Mayhill Swansea SA1 6TX

  2018/1079/FUL Submitted 9 May 2018 135m away

  Single storey rear extension to both properties and alteration of front bay window at no. 4

  Granted Full applications Extension Windows or glazing 10 docs
  Small domestic

• 48 Teilo Crescent Mayhill Swansea SA1 6SX

  2018/1414/FUL Submitted 25 Jun 2018 145m away

  Detached outbuilding

  Granted Full applications 6 docs

• 2026/1278/PLD Refused

  11 Awel Y Mor Sketty Swansea SA2 9FL

  Ground floor rear extension (application for a Certificate of Proposed Lawful Development)

  5 Aug 2026 Lawful development
• 2026/0916/PLD Granted

  30 Station Road Grovesend Swansea SA4 4GY

  Single storey rear extension (appliction for a Certificate of Proposed Lawful Development)

  2 Jun 2026 Lawful development
• 2026/1246/PLD Granted

  13 Lon Gwynfryn Sketty Swansea SA2 0TZ

  Side hip to gable roof extension with upper floor side window, rear dormer with Juliet balcony and front rooflights (application for a Certificate of Proposed Lawful Development)

  29 Jul 2026 Lawful development
• 2026/1235/ELD Refused

  21 Malvern Terrace Brynmill Swansea SA2 0BE

  Use of property as a HMO (Class C4) (application for Certificate of Existing Lawful Development)

  27 Jul 2026 Lawful development
• 2026/1047/PLD Granted

  48 Station Road Llanmorlais Swansea SA4 3TF

  Single storey rear extension (application for a Certificate of Proposed Lawful Development)

  22 Jun 2026 Lawful development