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Planning application

31 Thornley Avenue, Rhyl, Denbighshire, LL18 4HS

Decided Denbighshire 45/2026/0099/LP Certificate of Lawfulness for a Proposed Use / Development

Works: Extension Small domestic

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

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

Proposal

Tystysgrif datblygiad cyfreithlon ar gyfer estyniad unllawr arfaethedig i gefn yr annedd / Lawful development certificate for a proposed single storey extension to rear of dwelling

As published by the council, reference 45/2026/0099/LP

Application record

Reference
45/2026/0099/LP
Type
Certificate of Lawfulness for a Proposed Use / Development
Status
Permitted
Decision
Certify
Received
27 Feb 2026
Ward
WD37 - Rhyl Trellewelyn
Parish
Rhyl TC (45)
Postcode
LL18 4HS

Timeline

Dates from the published record

  1. 27 Feb 2026

    Received by Denbighshire

  2. 6 Aug 2026

    Added to PlanIndex

After the decision

Denbighshire has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

About lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • 51 Pendre Avenue, Rhyl, Denbighshire, LL18 4NH

    45/2026/0102/HH Submitted 2 Mar 2026 206m away

    Codi estyniad to fflat unllawr i flaen yr annedd / Erection of a single storey flat roof extension to front of dwelling

    Granted Householder Extension
    Small domestic

  • 22 Pendre Avenue, Rhyl, Denbighshire, LL18 4NH

    45/2025/0369/HH Submitted 15 Aug 2025 206m away

    Codi estyniad unllawr i gefn yr annedd a gwaith cysylltiedig / Erection of a single storey rear extension and associated works

    Granted Householder Extension
    Small domestic

  • 14 Oaklea Court, Rhyl, Denbighshire, LL18 4NP

    45/2026/0269/HH Submitted 4 Jun 2026 263m away

    Decision due ~30 Jul

    Codi estyniad unllawr i gefn yr annedd a chodi garej ar wahan yn ei le / Erection of a single storey extension to rear of dwelling and erection of a replacement detached garage

    Status unknown Householder Extension
    Small domestic

  • Land At (part Garden Of), 18 Dyserth Road, Rhyl, Denbighshire, LL18 4DP

    45/2026/0010/PF Submitted 7 Jan 2026 371m away

    Decision due ~4 Mar

    Codi 1 annedd ar wahan a gwaith cysylltiedig / Erection of 1 no. detached dwelling and associated works

    Status unknown Full applications New dwelling
    Domestic

  • 30 Holland Park Drive, Rhyl, Denbighshire, LL18 4SG

    45/2026/0182/LP Submitted 8 Apr 2026 433m away

    Tystysgrif datblygiad cyfreithlon ar gyfer y bwriad i godi ystafell ardd yng nghefn yr annedd / Lawful development certificate for the proposed erection of a garden room to rear of dwelling

    Decided Lawful development
    Small domestic

  • 4 Cheltenham Avenue, Rhyl, Denbighshire, LL18 4DN

    45/2026/0215/PC Submitted 30 Apr 2026 437m away

    Decision due ~25 Jun

    Codi adeilad gardd y tu ol i'r annedd (cais ol-weithredol) / Erection of a garden building to rear of dwelling (retrospective application)

    Status unknown Amendments
    Domestic

In Denbighshire

  • 17/2026/0251/LP Status unknown

    1 Plas Teg, Llandegla, Wrexham, Denbighshire, LL11 3AQ

    Tystysgrif datblygiad cyfreithlon ar gyfer codi ystafell wydr arfaethedig i gefn yr annedd / Lawful development certificate for the proposed erection of a conservatory to rear of dwelling

    26 May 2026 Lawful development
  • 22/2026/0238/LP Status unknown

    HOMEACRE, Llanychan, Ruthin, Denbighshire, LL15 1TY

    Tystysgrif datblygiad cyfreithlon ar gyfer yr estyniad newydd arfaethedig i ddisodli ystafell haul; ailosod canopi'r fynedfa flaen yn rhannol, a chladin rhannol / Lawful development certificate for the proposed replacement of sunroom with new extension; partial replacement of front entrance canopy, and partial cladding

    18 May 2026 Lawful development
  • 16/2026/0211/LE Status unknown

    LLANBEDR HALL, Llanbedr Dyffryn Clwyd, Ruthin, Denbighshire, LL15 1UU

    Tystysgrif Datblygiad Cyfreithlon i gadarnhau cychwyn cyfreithlon presennol cais cynllunio 16/2016/1044 ar gyfer trosi garejys yn un annedd / Lawful Development Certificate to confirm the existing lawful commencement of planning application 16/2016/1044 for the conversion of garages into a single dwelling

    30 Apr 2026 Lawful development
  • 45/2026/0182/LP Decided

    30 Holland Park Drive, Rhyl, Denbighshire, LL18 4SG

    Tystysgrif datblygiad cyfreithlon ar gyfer y bwriad i godi ystafell ardd yng nghefn yr annedd / Lawful development certificate for the proposed erection of a garden room to rear of dwelling

    8 Apr 2026 Lawful development
  • 16/2026/0161/LE Status unknown

    LLANBEDR HALL, Llanbedr Dyffryn Clwyd, Ruthin, Denbighshire, LL15 1UU

    Tystysgrif Datblygiad Cyfreithlon i gadarnhau'r Cychwyn Cyfreithlon presennol ar gais cynllunio 16/2013/1542 ar y safle a elwir yn Green House, Llanbedr Hall, Llanbedr DC / Lawful Development Certificate to confirm the existing Lawful Commencement of planning application 16/2013/1542 at site known as Green House, Llanbedr Hall, Llanbedr DC

    26 Mar 2026 Lawful development