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Planning application

25/02530/FUL

53 Harriet Street Cathays Cardiff CF24 4BW

Awaiting decision Cardiff Full Planning Permission

Proposal

Ground and first floor rear extensions, rear dormer roof extension, ground level changes and change of use to class C4 House in Multiple Occupation.

As published by the council, reference 25/02530/FUL

Timeline

Dates from the published record

  1. 3 Nov 2025

    Received by Cardiff

  2. 22 Jul 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.

What happens while it is decided

The process from here

This application is with Cardiff for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About full applications applications

How this application type works

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

Nearby applications

Within 500 metres

  • 26/01126/FUL Awaiting decision

    Flat 4 And 5 44 Harriet Street Cathays Cardiff CF24 4BY

    Change of use from 2 no. 2-bedroom self-contained flats (Use class C3) to 2 no. 3-bedroom Houses in Multiple Occupation (Use Class C4).

    2 Jun 2026 73m away Full applications
  • 25/01745/HSE Awaiting decision

    33 Harriet Street Cathays Cardiff CF24 4BU

    Ground floor rear extension to existing class C4 House in Multiple Occupation (HMO)

    28 Jul 2025 94m away Householder
  • 25/01979/FUL Awaiting decision

    55 Coburn Street Cathays Cardiff CF24 4BR

    Change of use from Class C4 House in Multiple Occupation to large Sui Generis HMO with ground floor rear extension and rear dormer extension.

    26 Aug 2025 101m away Full applications
  • 26/01391/CLEUD Awaiting decision

    173 Rhymney Street Cathays Cardiff CF24 4DL

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

    6 Jul 2026 121m away Lawful development
  • 26/00102/CLPUD Granted

    90 Coburn Street Cathays Cardiff CF24 4BT

    Rear and side dormer roof extensions.

    20 Jan 2026 127m away Lawful development
  • 25/02480/CLEUD Awaiting decision

    60 Woodville Road Cathays Cardiff CF24 4EB

    Use as 5 flats following the historical conversion from four to five flats.

    27 Oct 2025 136m away Lawful development

In Cardiff

  • 26/01029/FUL Granted

    78 Cae Glas Road Rumney Cardiff CF3 3JW

    Single storey rear extensions and change of use to 2 independent dwellings.

    19 May 2026 Full applications
  • 26/00451/FUL Granted

    48 Longcross Street Adamsdown Cardiff CF24 0JW

    Retrospective change of use from class C3 dwellinghouse to C4 House in Multiple Occupation (HMO).

    6 Mar 2026 Full applications
  • 26/01224/FUL Granted

    Unit 10 Eastgate Business Park Wentloog Avenue Trowbridge Cardiff CF3 2EY

    Retrospective application for the installation of an air condenser unit and associated ductwork.

    12 Jun 2026 Full applications
  • 26/01010/FUL Refused

    136 Tewkesbury Street Cathays Cardiff CF24 4QS

    Conversion to class C4 HMO with ground floor rear/side extension.

    18 May 2026 Full applications
  • 26/00310/FUL Granted

    1A Egerton Street Canton Cardiff CF5 1RF

    Demolition of commercial retail warehouse and construction of 4no. dwellings (2no. semi-detached pairs).

    12 Feb 2026 Full applications