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Planning application

12 Llewelyn Circle Mayhill Swansea SA1 6SN

Refused Swansea 2026/0321/PLD Lawful Dev. Cert - Proposed

Works: Extension Demolition Windows or glazing Small domestic

Read from the description, not a valuation. How we read the register

Refused. Only the applicant can appeal, within the statutory time limit, and a revised scheme can be submitted instead.

Proposal

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

As published by the council, reference 2026/0321/PLD

Application record

Reference
2026/0321/PLD
Type
Lawful Dev. Cert - Proposed
Status
Decided
Decision
Refused As published: Is Not Lawful (proposed)
Received
2 Mar 2026
Validated
3 Mar 2026
Decided
24 Mar 2026
Ward
Townhill - Area 1
Decision by
Delegated Decision
Postcode
SA1 6SN

Site history

Applications at this address on the Swansea register

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

Timeline

Dates from the published record

  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

Documents

Plans, drawings, consultee responses and the officer's report

12 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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Open the documents

What this refusal means

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.

About lawful development applications

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.

Nearby applications

Within 0.3 miles

  • 12 Llewelyn Circle Mayhill Swansea SA1 6SN

    2026/0638/PLD Submitted 20 Apr 2026 50 yards 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 50 yards 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 150 yards 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 150 yards 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 150 yards 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 150 yards away

    Detached outbuilding

    Granted Full applications 6 docs

In Swansea

  • 2026/1645/PLD Awaiting decision

    27 Sycamore Road West Cross Swansea SA3 5LB

    Detached outbuilding (application for a Certificate of Proposed Lawful Development)

    Received 7 Oct, published by the council 9 Oct 2026 Lawful development
  • 2026/1344/ELD Granted

    50 Eversley Road Sketty Swansea SA2 9DA

    Raised deck (application for a Certificate of Existing Lawful Development)

    Received 17 Aug, published by the council 27 Aug 2026 Lawful development
  • 2026/1525/PLD Refused

    15 Westland Avenue West Cross Swansea SA3 5NP

    Single storey rear extension and alterations to fenestration (application for a Certificate of Proposed Lawful Development)

    Received 18 Sep, published by the council 25 Sep 2026 Lawful development
  • 2026/1627/PLD Awaiting decision

    73 Mumbles Road West Cross Swansea SA3 5AA

    Stationing of a caravan to provide ancillary residential accommodation (application for a Certificate of Proposed Lawful Development)

    Received 5 Oct, published by the council 9 Oct 2026 Lawful development
  • 2026/1270/ELD Refused

    188 Hanover Street Swansea SA1 6BP

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

    Received 4 Aug, published by the council 25 Aug 2026 Lawful development