The Glass Houses St. Fagans National Museum Of History Cardiff CF5 6EJ Data via plota.co.uk

26/01951/DOC - Discharge of Condition(s) Registered
Admin / procedural

Proposal

Discharge of Condition 12 (Water-Harvesting and Storage System) of . Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
15 Sept 2026
✓
Consultation
22 Sept 2026
Decision
Expected by 10 Nov 2026

Under consideration

No decision has been issued yet. A decision is expected by 10 Nov 2026.

Comments are open until 13 Oct 2026

Comment on this application ↗

Documents 2

Application forms 1

PDF APPLICATIONFORMREDACTED Application Form · 15 Sept 2026 View ↗

Other documents 1

PDF 17798-DB3-S01-XX-RP-A-00010-A4- REV C01 RAINWATER HARVESTING SYSTEM REPAIRS Supporting Documents · 15 Sept 2026 View ↗

All documents on the council site ↗

Associated applications 8

Site constraints 5

Grade II listed: Main Building, St Fagans: National History Museum
List entry 87638 · 12 m away · 3 more listed buildings within 150 m (3 Grade II)
Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show the other 3 with distances
Historic England ↗
Registered park or garden: St. Fagans Castle
Nationally designated heritage. Its significance and setting carry great weight.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
St. Fagans conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Agricultural land, grade 3a
Best and most versatile land (grades 1, 2 and 3a). Source: the Predictive Agricultural Land Classification Map (Defra and Natural England, 2025; the Welsh Government's Predictive ALC Map 2 in Wales), a model rather than a site survey. A site survey can differ.
Where development of farmland is needed, policy prefers poorer land over the best and most versatile (grades 1, 2 and 3a). Three sources: Natural England's post-1988 field surveys, which are definitive where they exist; the Defra predictive map for England (2025) and the Welsh Government predictive map, modelled from the soil map with 3a and 3b split; and the 1970s provisional map, which planners and other services still show, coarser and with grade 3 undivided. Where the provisional and predicted grades disagree, treat the predicted grade as the current estimate and expect an application to carry its own survey.
Radon affected area, class 5
An estimated 10 to 30% of homes reach the radon action level. Indicative for the 1 km square, which takes the highest class found in it; a radon test gives the answer for a building.
From the British Geological Survey and UK Health Security Agency indicative atlas. Under building regulations, as the BRE guide BR 211 (2023) sets out, new buildings and extensions need basic radon protection from class 3 in England and Wales and from class 2 in Scotland, and full protection from class 5. The class at the site itself, from the detailed BGS map, decides which.
UKHSA radon ↗
Not affected
Outside flood zones 2 and 3 · No scheduled monument at the site

Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) 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.

Building

Floor area258 m² (2,777 sq ft)
Energy ratingB (asset rating 27)
UseOffices and Workshop Businesses
HeatingHeating and Natural Ventilation

From the energy performance certificate lodged in November 2025, the latest held for this property. The building may have changed since. View the certificate

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Other new applications on this street

24 Aug 2026Pending

St Fagans Castle Crofft-y-genau Road St Fagans Cardiff

Repair and partial rebuilding of a chimney and repair to window to one of the Ca...

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29 Sept 2026Pending

Museum Of Welsh Life Michaelston Road St Fagans Cardiff CF5 6XB

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24 Aug 2026Pending

St Fagans Castle Crofft-y-genau Road St Fagans Cardiff

Repair and partial rebuilding of a chimney and repair to window to one of the Ca...

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21 Aug 2026Approved

St Fagans Castle Crofft-y-genau Road St Fagans Cardiff

Discharge of condition 9 (repair of cast iron heating pipes) of 24/02913/LBC

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12 Aug 2026Approved

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Single Storey extension rear and side.

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Important details

Council
Cardiff
Application type
Discharge of Condition(s)
Postcode
CF5 6EJ
Received
15 Sept 2026
Validated
15 Sept 2026
Ward
PENTYRCH AND ST FAGANS
Case officer
Show
Applicant
Show
Agent
DB3 Architects

Public comments

No public comments yet.

Last counted 6 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15225886
Planning Portal ref
PP-15225886
Consultation
22 Sept 2026
Comments by
13 Oct 2026
Env. assessment
No

Historical activity at this location

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

This property

Previous applications at this address

2025 Approved
Discharge of Conditions 5 (Flower House Design) and 6 (Flower House Glazing) of 24/02913/…
25/02926/DOC
2025
Discharge of Condition 3 (Precautionary Method of Works Great Crested Newts (GCN)) of 24/…
25/02438/DOC
2025
Discharge of Condition 11 (New Heating System M&E Details) of 24/02913/LBC
25/02042/DOC
2025
Part Discharge of Condition 7 (Masonry Specification and Method Statement) of 24/02913/LB…
25/01987/DOC
2024 Approved
Work to two glasshouses. Repairs to the brick plinths and repairs or replacement of floor…
24/02912/FUL
2024 Approved
Work to two glasshouses. Repairs to the brick plinths and repairs or replacement of floor…
24/02913/LBC
Within ~100m

Nearby activity

2025
St Fagans Castle Crofft-y-genau Road St Fagans Cardiff
Installation of two new Air Source Heat Pumps with associated service equipment within ex…
25/02850/FUL
2025
St Fagans Castle Crofft-y-genau Road St Fagans Cardiff
Installation of two new Air Source Heat Pumps with associated service equipment within ex…
25/02851/LBC
2024 Approved
St Fagans Castle Crofft-y-genau Road St Fagans Cardiff
Full re-roofing of main range with 'like-for-like' repairs to structural roof members of…
24/01553/LBC
2024 Approved
Silverstream Castle Hill St Fagans Cardiff CF5 6DU
Removal of 2 x dead ash tree stage 5 in rear garden.Removal of 7-8 x Cedar trees in close…
24/01668/WTCA
2021 Approved
Riverside Cottage Michaelston Road St Fagans Cardiff CF5 6DU
RETROSPECTIVE APPLICATION TO REGULARISE THE FOLLOWING WORKS: DEMOLISH AND REBUILD CHIMNEY
LBC/21/00031/DCH
2020 Withdrawn
1 Castle Hill St Fagans Cardiff CF5 6EJ
REMOVAL OF SOIL ABUTTING THE SIDE AND REAR OF THE PROPERTY AND NARROWING OF MODERN STEPS…
20/02591/DCH
2016 Approved
Museum Of Welsh Life Michaelston Road St Fagans Cardiff CF5 6XB
INSTALLATION OF HATCH IN THE VICTORIAN CEILING ABOVE THE DINING ROOM
16/02762/MNR

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.