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Planning application

20 Ruperra Close Old St Mellons Cardiff CF3 6HX

Granted Cardiff 26/01452/NMA Non Material Amendment

Works: Extension Windows or glazing

Relates to 26/00673/HSE

Permission granted. Work must normally begin within five years of the decision or the permission lapses.

Proposal

Proposed Non-Material Amendment to Planning Permission 26/00673/HSE- Relocation of windows and doors and small infill between the main house and side extension.

As published by the council, reference 26/01452/NMA

Application record

Reference
26/01452/NMA
Type
Non Material Amendment
Status
Decided
Decision
Granted As published: Permission Granted
Received
13 Jul 2026
Validated
13 Jul 2026
Decided
28 Jul 2026
Ward
PONTPRENNAU AND OLD ST MELLONS
Decision by
Delegated to Group Leader
Postcode
CF3 6HX

Site history

Applications at this address on the Cardiff register

This site has had 3 applications since 2025: 3 approved, 0 refused.

  • 26/00673/HSE Granted

    20 Ruperra Close Old St Mellons Cardiff CF3 6HX

    New front porch, ground and first floor side extensions, proposed car port and other associated works.

    Decided 2 Jun 2026 Householder
  • 25/02789/HSE Granted

    20 Ruperra Close Old St Mellons Cardiff CF3 6HX

    FIrst floor side extensions, ground floor side and rear extension, and relocation of carport, including associated external alterations.

    Decided 10 Feb 2026 Householder

Timeline

Dates from the published record

  1. 13 Jul 2026

    Received by Cardiff

  2. 22 Jul 2026

    Added to PlanIndex

  3. 28 Jul 2026

    Decision issued: Permission Granted

Cases linked to this one on the register

  • 26/00673/HSE Granted

    20 Ruperra Close Old St Mellons Cardiff CF3 6HX

    New front porch, ground and first floor side extensions, proposed car port and other associated works.

    Decided 2 Jun 2026 Householder

Who's behind it

Company information only, from the register and Companies House

KnK Design Studio Ltd Agent, a design practice registered in Cardiff

Active · incorporated 2024 · Cardiff

41 applications on PlanIndex · across 3 councils · 91% granted

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

6 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.

Watch members (£5 a month) open the document list from here.

Open the documents

What this grant of permission means

Cardiff granted permission on 28 July 2026, subject to any conditions on the decision notice. Work must normally begin within five years or the permission lapses. More in our guide to what happens after a planning decision.

About amendment applications

An amendment application makes limited changes to a permission that already exists; anything beyond modest adjustment needs a fresh application. More in our guide to planning application types.

Nearby applications

Within 0.3 miles

  • 20 Ruperra Close Old St Mellons Cardiff CF3 6HX

    26/00673/HSE Submitted 1 Apr 2026 50 yards away

    New front porch, ground and first floor side extensions, proposed car port and other associated works.

    Granted Householder Extension 10 docs
    Small domestic

  • 20 Ruperra Close Old St Mellons Cardiff CF3 6HX

    25/02789/HSE Submitted 26 Nov 2025 50 yards away

    FIrst floor side extensions, ground floor side and rear extension, and relocation of carport, including associated external alterations.

    Granted Householder Extension 7 docs
    Domestic

  • Ellancombe Bridge Road Old St Mellons Cardiff CF3 6UY

    PD/09/00911/E Submitted 3 Dec 2009 100 yards away

    HARDSTANDING

    Refused Prior approval

  • 6 Ruperra Close Old St Mellons Cardiff CF3 6HX

    24/02402/VAR Submitted 9 Oct 2024 150 yards away

    First floor side extension, external alterations to ground floor front elevation, single storey side and rear extension. (24/00861/HSE - Approved 09 September 2024 - Subsequently Varied Under 24/01679/NMA):- Variation of Condition 2 (Approved Plans) of Planning Permission 24/00861/HSE to amend the approved scheme as follows: 1) Additional single storey side extension.

    Granted Amendments Extension 10 docs
    Small domestic

  • 6 Ruperra Close Old St Mellons Cardiff CF3 6HX

    24/01679/NMA Submitted 17 Jul 2024 150 yards away

    Proposed Non-Material Amendment to Planning Permission 24/00861/HSE - Depth of proposed rear extension increased and sloped roof replaced with balcony area. Minor alterations to the internal layout.

    Granted Amendments Extension 18 docs

  • Land To The North Of Bridge Road Old St Mellons Cardiff

    25/01181/OUT Submitted 23 May 2025 200 yards away

    Construction of 3no. residential dwellings

    Withdrawn Outline 8 docs

In Cardiff

  • 26/01324/NMA Granted

    Phase 4A Of Land North Of Junction 33 Cardiff

    Proposed Non-Material Amendment to Planning Permission 23/02401/RES - 1) Replace approved boundary treatment plan with new proposed plan. 2) Alterations to external surface finishes.

    Received 24 Jun, published by the council 13 Aug 2026 Amendments
  • 26/01857/NMA Granted

    14 Cotswold Avenue Lisvane Cardiff CF14 0TA

    Proposed Non-Material Amendment to Planning Permission 18/00385/DCH.

    Received 3 Sep, published by the council 13 Sep 2026 Amendments
  • 26/02083/NMA Awaiting decision

    22 Swanage Close Trowbridge Cardiff CF3 0LS

    Proposed Non-Material Amendment to Planning Permission 23/01834/FUL - to amend extension junction of existing roof to allow formation of hipped roof

    Received 2 Oct, published by the council 6 Oct 2026 Amendments
  • 26/01987/NMA Granted

    Land At Dumballs Road Butetown Cardiff

    Proposed Non-Material Amendment to Planning Permission 06/01823/C - Life Critical Fire Safety Works.

    Received 18 Sep, published by the council 6 Oct 2026 Amendments
  • 26/01711/NMA Granted

    25 Brook Road Fairwater Cardiff CF5 3AW

    Proposed Non-Material Amendment to Planning Permission 24/00292/HSE - To change the roof design of the approved first-floor extension

    Received 11 Aug, published by the council 17 Aug 2026 Amendments