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Planning application

25/01904/CLPUD

12 Herbert March Close Llandaff Cardiff CF5 2TD

Awaiting decision Cardiff Cert of Lawfulness Proposed (s192)

Proposal

Single storey rear extension.

As published by the council, reference 25/01904/CLPUD

Timeline

Dates from the published record

  1. 14 Aug 2025

    Received by Cardiff

  2. 15 Aug 2025

    Validated

    Checked as complete and ready for consideration.

  3. 22 Jul 2026

    Added to PlanIndex

  4. 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 lawful development applications

How this application type works

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

Nearby applications

Within 500 metres

  • 26/00509/HSE Granted

    5 Herbert March Close Llandaff Cardiff CF5 2TD

    2 storey side extension, single storey front and rear extensions

    13 Mar 2026 72m away Householder
  • 25/01923/HSE Awaiting decision

    9 Timothy Rees Close Llandaff Cardiff CF5 2RH

    Installation of an Air Source Heat Pump.

    19 Aug 2025 179m away Householder
  • 26/00034/HSE Granted

    15 Baldwin Close Llandaff Cardiff CF5 2SP

    Front porch and single storey rear extension.

    9 Jan 2026 318m away Householder
  • 26/01202/HSE Granted

    72 Timothy Rees Close Llandaff Cardiff CF5 2AU

    Two storey side & single storey rear extension with other external alterations.

    10 Jun 2026 328m away Householder
  • 26/01270/CLPUD Granted

    26 Allan Durst Close Llandaff Cardiff CF5 2RP

    Construction of single storey side extension

    19 Jun 2026 358m away Lawful development
  • 26/00867/HSE Granted

    2 Roper Close Llandaff Cardiff CF5 2RD

    Removal of existing conservatory and construction of a single storey rear extension.

    30 Apr 2026 362m away Householder

In Cardiff

  • 26/01314/CLPUD Granted

    Beech House Pascal Close Trowbridge Cardiff

    Remove air handling unit and chiller systems. The plinth to be removed and a replacement plinth being installed on the same footprint. Installation of a new liquid nitrogen tank.

    23 Jun 2026 Lawful development
  • 26/01449/CLPUD Awaiting decision

    53 Westbourne Road Whitchurch Cardiff CF14 2BR

    single storey flat roof side and rear extension

    13 Jul 2026 Lawful development
  • 26/01429/CLPUD Awaiting decision

    311 Western Avenue Llandaff Cardiff CF5 2BA

    Works associated with a loft conversion

    10 Jul 2026 Lawful development
  • 26/01415/CLPUD Awaiting decision

    85 Wenallt Road Rhiwbina Cardiff CF14 6TP

    Construction of rear roof dormer and installation of roof windows.

    9 Jul 2026 Lawful development
  • 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 Lawful development