82 Mardy Street Grangetown Cardiff CF11 6QW

This site has had 2 applications since 2022: 0 approved, 1 refused.

• 22/02573/HSE Refused

  82 Mardy Street Grangetown Cardiff CF11 6QW

  Proposed ground floor single storey rear and side extension, and proposed dormer roof extension and porch

  Decided 20 Feb 2023 Householder

1. 21 Oct 2025

   Received by Cardiff

2. 28 Jan 2026

   Validated

   Checked as complete and ready for consideration.

3. 22 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 25 March 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Cardiff took a median of 56 days over the applications it decided in the last year.

This application is with Cardiff for determination, against a statutory target of eight weeks. Over the last year Cardiff decided householder applications in a median of 59 days. More in our guide to how long planning decisions take.

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

• 82 Mardy Street Grangetown Cardiff CF11 6QW

  22/02573/HSE Submitted 31 Oct 2022 50 yards away

  Proposed ground floor single storey rear and side extension, and proposed dormer roof extension and porch

  Refused Householder Extension Loft or dormer 15 docs
  Small domestic

• Lyndon Social Club & Institute 109-111 Clare Road Grangetown Cardiff CF11 6QR

  21/00925/MNR Submitted 14 Apr 2021 50 yards away

  SIDE DORMER ROOF EXTENSION AND REAR FLAT ROOF EXTENSION

  Granted Full applications Extension Loft or dormer 20 docs

• 47 Mardy Street Grangetown Cardiff CF11 6QU

  22/01547/MNR Submitted 19 Jul 2022 50 yards away

  CONVERSION OF PROPERTY USE FROM C3 TO 7 BEDROOM HOUSE IN MULTIPLE OCCUPATION

  Granted Full applications 16 docs

• 131 Clare Road, Grangetown, Cardiff

  06/00523/C Submitted 10 Mar 2006 100 yards away

  SINGLE STOREY REAR EXTENSION, CREATING NEW KITCHEN AND BATHROOM

  Granted Householder Extension 1 doc
  Small domestic

• 131 Clare Road, Grangetown, Cardiff

  05/00995/C Submitted 3 May 2005 100 yards away

  SINGLE STOREY REAR EXTENSION, CREATING NEW KITCHEN AND BATHROOM

  Refused Householder Extension 1 doc
  Small domestic

• 91 Clare Road Grangetown Cardiff CF11 6QQ

  25/01204/FUL Submitted 28 May 2025 100 yards away

  Change of use from C3 to five person HMO (C4).

  Granted Full applications 11 docs

• 26/02112/HSE Awaiting decision

  7 Penydarren Drive Whitchurch Cardiff CF14 2TT

  Proposed Single Storey Side/Rear Extension with Garage Conversion

  Received 7 Oct, published by the council 9 Oct 2026 Householder
• 26/02113/HSE Awaiting decision

  78 Mill Road Lisvane Cardiff CF14 0UG

  PROPOSED FIRST FLOOR EXTENSION AT SIDE OF HOUSE

  Received 7 Oct, published by the council 9 Oct 2026 Householder
• 26/01702/HSE Granted

  45 Gwern Rhuddi Road Cyncoed Cardiff CF23 6PS

  Two storey and single storey rear extensions (development similar to that as approved under 25/00533/HSE with additional first floor part).

  Received 10 Aug, published by the council 24 Aug 2026 Householder
• 26/02104/HSE Awaiting decision

  15 Brynteg Rhiwbina Cardiff CF14 6TS

  Proposed single storey rear extension to the existing semi-detached dwelling including minor internal and external modifications

  Received 6 Oct, published by the council 9 Oct 2026 Householder
• 26/02102/HSE Awaiting decision

  49 Kimberley Road Penylan Cardiff CF23 5DL

  Proposed ground floor rear side return extension

  Received 6 Oct, published by the council 9 Oct 2026 Householder