46 Duffryn Avenue Cyncoed Cardiff CF23 6JL Data via plota.co.uk

26/01855/CLPUD - Cert of Lawfulness Proposed (s192) Pending
Extensions & alterations

Proposal

Proposed hip to gable loft conversion Data via plota.co.uk

Track application Save this application and get an email when its status or decision changes. Alerts nearby Get email alerts for new planning applications near this address.
View original council record ↗Last checked

Application progress

✓
Received
3 Sept 2026
Decision
Expected by 29 Oct 2026

This application is under consideration - no decision has been issued yet. Plota predicts a decision between 15 Oct 2026 and 26 Oct 2026, from Cardiff's recent extensions.

Documents 3

Plans & drawings 2

PDF THE LOCATION PLAN_INCLUDED_IN_BLOCK PLAN OF THE SITE Planning Application Documents · 3 Sept 2026 View ↗ PDF THE LOCATION PLAN_INCLUDED_IN_BLOCK PLAN OF THE SITE_38586660 Planning Application Documents · 3 Sept 2026 View ↗

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 3 Sept 2026 View ↗

All documents on the council site ↗

Site constraints 1

Local nature reserve 228 m away: Nant Fawr Corridor
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Not affected
Outside flood zones 2 and 3 · No listed building at the site · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Work with planning data?

Every application in Cardiff - and every UK council - as a live feed, an API, or a bulk CSV export.

About Plota's data service

Nearby new applications

19 Aug 2026Approved

57 Celyn Avenue Cyncoed Cardiff CF23 6EJ

Proposed Non-Material Amendment to Planning Permission 25/02767/HSE - To reduce ...

26/01769/NMA
19 Aug 2026Approved

5 Llandennis Green Cyncoed Cardiff CF23 6JX

Proposed rear single storey extension

26/01759/CLPUD
23 Jul 2026Pending

182 Lake Road East Cyncoed Cardiff CF23 5NR

Proposed demolition of existing garage and erection of a two storey rear / side ...

26/01530/HSE
16 Jul 2026Approved

71 Llandennis Avenue Cyncoed Cardiff CF23 6JF

Single storey extension to side and rear.

26/01476/CLPUD
14 Jul 2026Approved

21 Rhyd Y Penau Road Cyncoed Cardiff CF23 6PX

Ground floor rear extension and alteration to loft, rear and side dormers and al...

26/01457/HSE
29 Jun 2026Withdrawn

42 Pennant Crescent Cyncoed Cardiff CF23 6LN

Erection of a double storey rear extension with a conversion to existing garage ...

26/01345/HSE

Important details

Council
Cardiff
Application type
Cert of Lawfulness Proposed (s192)
Postcode
CF23 6JL
Received
3 Sept 2026
Validated
3 Sept 2026
Ward
CYNCOED
Case officer
Show
Applicant
Show

Decision outlook

Day 10 of the 56-day target. Cardiff usually decides extensions by day 48.

Day 1046 days to the 56-day target
70%decided within 8 weeks
94%approved
477decided in the last year

Plota live figures for extensions decided by Cardiff in the last twelve months, from validation. Cardiff decision record →

Public comments

No public comments yet.

Last counted 10 Sept 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15201425
Env. assessment
No

Historical activity at this location

22 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2023 Approved
Demolition of existing garage and new proposed side return and rear extension
23/00853/HSE
Within ~100m

Nearby activity

2025 Approved
47 Duffryn Avenue Cyncoed Cardiff CF23 6JL
Double storey side extension and external alterations to the rear.
25/00565/FUL
2024 Approved
8 Dan-y-coed Close Cyncoed Cardiff CF23 6NJ
Single storey rear extension and double storey side extension.
24/01294/HSE
2024 Approved
5 Dan-y-coed Close Cyncoed Cardiff CF23 6NJ
A 2-3m radial crown reduction to an Oak tree to reduce the end weight on heavily loaded b…
24/00688/WTTPP
2024 Approved
49 Duffryn Avenue Cyncoed Cardiff CF23 6JL
Proposed Non-Material Amendment to Planning Permission 23/01399/HSE - Adjustments to size…
24/00737/NMA
2023 Approved
49 Duffryn Avenue Cyncoed Cardiff CF23 6JL
Proposed two storey side and rear extension with extension of existing rear first floor r…
23/01399/HSE
2019 Approved
5 Dan-Y-Coed Close Cyncoed Cardiff CF23 6NJ
PROPOSED SINGLE & TWO STOREY REAR / SIDE EXTENSIONS, FRONT PORCH & LOFT CONVERSION WITH D…
19/02652/DCH
2022 Approved
56 Llandennis Avenue Cyncoed Cardiff CF23 6JJ
Ground and First Floor Rear Extensions with Modification to the Side and Roof
22/02040/HSE
2022 Approved
3 Nant-Fawr Close, Cyncoed, Cardiff, CF23 6JP
YEW TREE: Reduce and reshape crown by up to 2.0,m
CYNC/TP/22/00122
2022 Approved
48 Duffryn Avenue Lakeside Cardiff CF23 6JL
SINGLE STOREY REAR EXTENSION
22/00900/DCH
2021 Refused
10 Nant-Fawr Close Cyncoed Cardiff CF23 6JP
FIRST FLOOR SIDE/REAR EXTENSION
21/00981/DCH
2020 Approved
8 Dan-Y-Coed Close Cyncoed Cardiff CF23 6NJ
LEAN TO GARAGE EXTENSION WITH HOME OFFICE AT THE REAR
20/02655/DCH
2020 Approved
5 Dan-Y-Coed Close, Cyncoed, Cardiff, CF23 6NJ
Crown Lift
CYNC/TP/20/00107
2020 Approved
5 Dan-Y-Coed Rise Cyncoed Cardiff CF23 6NN
HIP TO GABLE ROOF EXTENSIONS, FRONT AND REAR DORMERS AND GROUND FLOOR SIDE EXTENSION INCL…
20/00337/DCH
2019 Approved
11 Dan-Y-Coed Close, Cyncoed, Cardiff, CF23 6NJ
Remove Lowest Branches/Clear Deadwood.
CYNC/TP/19/00178
2018 Withdrawn
5 Dan-Y-Coed Close Cyncoed Cardiff CF23 6NJ
PROPOSED SINGLE & TWO STOREY REAR & SIDE EXTENSIONS, FRONT PORCH & LOFT CONVERSION WITH D…
18/00501/DCH
2018 Approved
14 Dan-Y-Coed Close Cyncoed Cardiff CF23 6NJ
SINGLE STOREY REAR EXTENSION, FIRST FLOOR ABOVE GARAGE, RENDERING OF EXTERNAL WALLS.
18/01095/DCH
2018 Approved
11 Dan-Y-Coed Close Cyncoed Cardiff CF23 6NJ
DEMOLITION OF EXISTING GARAGE, SINGLE AND TWO STOREY REAR AND SIDE EXTENSIONS, LOFT CONVE…
18/01487/DCH
2017 Approved
49 Duffryn Avenue Lakeside Cardiff CF23 6JL
PROPOSED HIP TO GABLE LOFT CONVERSION WITH A REAR FACING DORMER.
17/02691/DCH
2016 Approved
9 Dan-Y-Coed Rise Cyncoed Cardiff CF23 6NN
PROPOSED FIRST FLOOR EXTENSION, REAR SINGLE STOREY EXTENSIONS, ALTERATIONS TO ROOF STRUCT…
16/02333/DCH
2016 Approved
5 Dan-Y-Coed Rise Cyncoed Cardiff CF23 6NN
HIP TO GABLE ROOF EXTENSIONS, FRONT AND REAR DORMERS AND GROUND FLOOR SIDE EXTENSION INCL…
16/01523/DCH
2016 Approved
5 Dan-Y-Coed Close, Cyncoed, Cardiff, CF23 6NJ
UNDERTAKE 2-3M REDUCTION IN LENGTH OF LIMBS IN UPPER AND LOWER CROWN TO ESTABLISH SMALLER…
CYNC/TP/16/00034