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Planning application

20 Dorchester Avenue Penylan Cardiff CF23 9BR

Awaiting decision Cardiff 26/01496/HSE Householder Planning Permission

Works: Extension Loft or dormer Domestic

Read from the description, not a valuation. How we read the register

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Retrospective permission for proposed loft dormer and side gable extension.

As published by the council, reference 26/01496/HSE

Application record

Reference
26/01496/HSE
Type
Householder Planning Permission
Status
Registered
Received
20 Jul 2026
Validated
20 Jul 2026
Ward
PENYLAN
Postcode
CF23 9BR

Timeline

Dates from the published record

  1. 20 Jul 2026

    Received by Cardiff

  2. 13 Aug 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 14 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    Cardiff took a median of 55 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Agent on file, an architecture practice registered in Cardiff

28 applications on PlanIndex · across 5 councils · 85% granted

Trade members see who it is, their full track record, and every application they have filed.

See who's behind it

Documents

Plans, drawings, consultee responses and the officer's report

8 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Trade members open them from here.

Open the documents

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

  • 20 Dorchester Avenue Penylan Cardiff CF23 9BR

    26/01302/CLPUD Submitted 22 Jun 2026 0m away

    Rear loft dormer and creation a gable end.

    Withdrawn Lawful development Loft or dormer 11 docs

  • 7 Ferny Court Penylan Cardiff CF23 9BU

    25/01758/WTTPP Submitted 25 Jul 2025 46m away

    2 x Tilia Europea (rear garden) - Crown raise over highway to approx. 4.5m to suitable alternative pruning points due to overhanging public footpath and road

    Granted Trees 3 docs

  • 7 & 8 Ferny Court Penylan Cardiff CF23 9BU

    26/01866/WTTPF Submitted 26 Aug 2026 46m away

    100% historically approved · decision due ~21 Oct

    Felling and removal of trees affecting retaining wall.

    Awaiting decision Trees 5 docs

  • 28 Dorchester Avenue Penylan Cardiff CF23 9BR

    21/01584/DCH Submitted 23 Jun 2021 57m away

    REAR DORMER ROOF EXTENSION

    Granted Lawful development Extension Loft or dormer 4 docs

  • 31 Southcourt Road Penylan Cardiff CF23 9DB

    26/01309/HSE Submitted 22 Jun 2026 64m away

    92% historically approved · decision due ~17 Aug

    Single storey rear extension.

    Awaiting decision Householder Extension 6 docs
    Small domestic

  • 27 Southcourt Road Penylan Cardiff CF23 9DB

    23/00078/CLD Submitted 12 Jan 2023 81m away

    Replacement of existing flat roof with mono pitched roof to side extension and installation of rear patio doors including internal alterations.

    Granted Lawful development Extension Windows or glazing 9 docs

In Cardiff

  • 25/01805/HSE Refused

    12 Hamilton Street Pontcanna Cardiff CF11 9BP

    Replacement of the existing ground and first floor front bay windows with sliding sash uPVC windows.

    1 Aug 2025 Householder
  • 26/01543/HSE Refused

    2 Camelot Way Thornhill Cardiff CF14 9AN

    Proposed open sided car port, drainage to one side and into a gravel soakaway.

    24 Jul 2026 Householder
  • 26/01459/HSE Granted

    64 Fidlas Avenue Cyncoed Cardiff CF14 0NZ

    Side single and double storey extension

    14 Jul 2026 Householder
  • 26/01841/HSE Awaiting decision

    160 Heol Llanishen Fach Rhiwbina Cardiff CF14 6RG

    Two storey side extension and loft conversion with front and rear dormers

    1 Sep 2026 Householder
  • 26/01505/HSE Granted

    100 Caer Wenallt Rhiwbina Cardiff CF14 7HQ

    Front & rear dormers, porch & internal alterations.

    20 Jul 2026 Householder