23 Tewkesbury Street Cathays Cardiff CF24 4QQ

1. 3 Jul 2026

   Received by Cardiff

2. 20 Jul 2026

   Validated

   Checked as complete and ready for consideration.

3. 28 Jul 2026

   Decision issued: Permission Granted

4. 6 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

• 28 Dogfield Street Cathays Cardiff CF24 4QJ

  25/01966/FUL Submitted 25 Aug 2025 26m away

  92% historically approved · decision due ~20 Oct

  Change of use to class C4 House in Multiple Occupation (HMO) with ground floor rear extension and rear dormer extension.

  Awaiting decision Full applications Extension Loft or dormer 6 docs

• 114A Crwys Road Cathays Cardiff CF24 4NR

  25/00608/FUL Submitted 11 Mar 2025 72m away

  Demolition of existing garage. Two storey rear extension and Change of Use from C3 to C4.

  Refused Full applications Extension Demolition 15 docs

• Rear Of 27 Dogfield Street Cathays Cardiff CF24 4QL

  25/00157/FUL Submitted 21 Jan 2025 78m away

  Conversion of former factory unit to two flats

  Granted Full applications New dwelling 12 docs
  Several homes

• 140 Crwys Road Cathays Cardiff CF24 4NR

  21/01439/MNR Submitted 7 Jun 2021 91m away

  CHANGE OF USE FROM ACCOUNTANCY FIRM TO INDIAN TAKEAWAY AND ALTERATION TO FRONT FACADE

  Granted Full applications 7 docs

• 58 Tewkesbury Street Cathays Cardiff CF24 4QT

  26/01261/CLEUD Submitted 18 Jun 2026 99m away

  Use of the property as a C4 House in Multiple Occupation (HMO).

  Granted Lawful development 8 docs

• 2A Fairoak Road And 150 Crwys Road Cathays Cardiff CF24 4PX

  22/02928/FUL Submitted 7 Dec 2022 129m away

  First floor extension to construct two new apartments at first floor level.

  Refused Full applications New dwelling Extension 14 docs
  Several homes

• 26/01705/CLPUD Granted

  390 Cyncoed Road Cyncoed Cardiff CF23 6SA

  Use of 390 Cyncoed Road as residential accommodation for up to six adults with mental health conditions, living together as a single household, with care and support provided by non-resident staff

  11 Aug 2026 Lawful development
• 26/01807/CLPUD Awaiting decision

  33 Blossom Drive Lisvane Cardiff CF14 0BE

  Proposed single storey rear extension and conversion of integral garage

  25 Aug 2026 Lawful development
• 26/01476/CLPUD Granted

  71 Llandennis Avenue Cyncoed Cardiff CF23 6JF

  Single storey extension to side and rear.

  16 Jul 2026 Lawful development
• 26/01662/CLEUD Granted

  2 Llantwit Street Cathays Cardiff CF24 4AJ

  Use of the property as four self-contained flats.

  5 Aug 2026 Lawful development
• 26/01775/CLEUD Awaiting decision

  62 Cottrell Road Roath Cardiff CF24 3EZ

  Use of the property as 2 residential care flats (Class C2).

  20 Aug 2026 Lawful development