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Planning application

25/01745/HSE

33 Harriet Street Cathays Cardiff CF24 4BU

Awaiting decision Cardiff Householder Planning Permission

Proposal

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

As published by the council, reference 25/01745/HSE

Timeline

Dates from the published record

  1. 28 Jul 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 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

  • 26/01126/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 69m away Full applications
  • 25/02530/FUL Awaiting decision

    53 Harriet Street Cathays Cardiff CF24 4BW

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

    3 Nov 2025 94m away Full applications
  • 25/01741/FUL Awaiting decision

    11 Mundy Place Cathays Cardiff CF24 4BZ

    Rear extension and rear dormer loft conversion plus conversion to large sui generis house.

    28 Jul 2025 108m away Full applications
  • 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 110m away Lawful development
  • 25/02813/FUL Awaiting decision

    Rear Of 8-26 Fitzroy Street Cathays Cardiff CF24 4BL

    Residential development and associated works.

    27 Nov 2025 114m away Full applications
  • 26/00885/FUL Awaiting decision

    40 Wyeverne Road Cathays Cardiff CF24 4BH

    Ground and first floor extensions, dormer alterations, veluxes, conversion to Sui Generis House in Multiple Occupation (HMO) and hip to gable roof extension.

    30 Apr 2026 125m away Full applications

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