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Planning application

25/02809/HSE

11 Celyn Avenue Cyncoed Cardiff CF23 6EH

Granted Cardiff Householder Planning Permission

Proposal

Ground and first floor rear extension, rear dormer loft conversion and new entrance porch with external alterations.

As published by the council, reference 25/02809/HSE

Timeline

Dates from the published record

  1. 27 Nov 2025

    Received by Cardiff

  2. 10 Feb 2026

    Decision issued: Permission Granted

  3. 22 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

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.

About householder applications

How this application type works

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

Nearby applications

Within 500 metres

  • 26/00024/HSE Granted

    12 Lakeside Drive Cyncoed Cardiff CF23 6DD

    Part single-storey and part double-storey side and rear extension, including external works.

    7 Jan 2026 132m away Householder
  • 26/00916/HSE Refused

    49 Celyn Avenue Cyncoed Cardiff CF23 6EJ

    Single storey rear, side and front porch extensions and demolition of garage/ storage.

    4 May 2026 193m away Householder
  • 26/00818/WTCA Granted

    190 Lake Road East Cyncoed Cardiff CF23 5NR

    Mixed hedge; rear boundary, reduce height down to the height of the magnolia and trim neatly, trim the inside face neatly. (See attached photo) Red oak; r/h corner, reduce and shape by removing upto 1.5m and a minor crown raise if needed.

    24 Apr 2026 247m away Trees
  • 26/01229/NMA Granted

    57 Celyn Avenue Cyncoed Cardiff CF23 6EJ

    Proposed Non-Material Amendment to Planning Permission 25/02767/HSE- minor alterations including a rooflight to the front roof slope and addition of a small window to the front elevation

    15 Jun 2026 254m away Amendments
  • 25/02767/HSE Granted

    57 Celyn Avenue Cyncoed Cardiff CF23 6EJ

    Single storey rear extension, front porch extension, front and rear dormer roof extension, provision of additional driveway space and associated external alterations.

    25 Nov 2025 254m away Householder
  • 25/02840/HSE Granted

    14 Nant-fawr Crescent Cyncoed Cardiff CF23 6JN

    Rear dormer roof extension.

    1 Dec 2025 299m away Householder

In Cardiff

  • 26/00074/HSE Granted

    201 Pantbach Road Rhiwbina Cardiff CF14 6AE

    Side dormer roof extensions. Two storey gabled rear extension with first floor Juliette balcony and external alterations to the property.

    15 Jan 2026 Householder
  • 26/01047/HSE Granted

    39 James Court Trowbridge Cardiff CF3 0FA

    Single storey rear extension.

    21 May 2026 Householder
  • 26/01054/HSE Granted

    38 Heol Iscoed Rhiwbina Cardiff CF14 6PB

    First floor rear extension, single storey side extension, demolition of existing garage.

    21 May 2026 Householder
  • 26/01058/HSE Granted

    37 Ridgeway Lisvane Cardiff CF14 0RS

    Demolition of existing garage, and erection of a single storey rear/side extension.

    22 May 2026 Householder
  • 26/01044/HSE Granted

    102 Wenallt Road Rhiwbina Cardiff CF14 6TP

    Single storey rear extension.

    20 May 2026 Householder