12, TOWER TERRACE Tan Y Gwalia, Denbigh, Denbighshire, LL16 3NL Data via plota.co.uk

01/2025/0386/LP - Certificate of Lawfulness for a Proposed Use / Development Approved
Utility infrastructure

Proposal

Tystysgrif datblygiad cyfreithlon ar gyfer simnai boeler newydd arfaethedig yn y cefn / Lawful development certificate for a proposed new boiler flue to rear Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
3 Sept 2025
✓
Approved
25 Sept 2025
✗
Appeal dismissed
9 Jul 2026

Approved on 25 Sept 2025 · Last checked 19 Oct 2026

Documents 4

Decision & officer reports 1

PDF DNOTE - HHLP, LE and LP v1 DM Certificate of Decision · 25 Sept 2025 View ↗

Plans & drawings 2

PDF Existing and Proposed Elevations (Drawing No. AL.02.01) DM Plans · 9 Sept 2025 View ↗ PDF Location Plan DM Plans · 9 Sept 2025 View ↗

Application forms 1

PDF Application Form Redacted DM Application Forms/Certificates · 9 Sept 2025 View ↗

All documents on the council site ↗

Site constraints 4

Denbigh Town 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.
Scheduled monument 8 m away: Denbigh Town Walls
Its setting is a consideration for work nearby.
Nationally important archaeology protected by the Secretary of State. Work that affects the monument or its setting is rarely permitted.
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 ↗
29 listed buildings within 150 m
Nearest: Burgess Gate, Grade I, 49 m away · 3 Grade I, 1 Grade II*, 25 Grade II
The site itself is not listed. 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 all 29 with distances
Cadw ↗
Not affected
Outside flood zones 2 and 3

Checked on 17 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.

Sales history 2

Last sold for £66,000 in January 2015. Terraced house, freehold.

30 January 2015£66,000
9 July 2003£44,950

Sale prices from HM Land Registry's price paid record, matched to this application by its address.

Building

Floor area53 m² (570 sq ft)
Energy ratingD (66 out of 100)
PropertyMid-terrace house, 3 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in February 2009, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate

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Important details

Council
Denbighshire
Application type
Certificate of Lawfulness for a Proposed Use / Development
Postcode
LL16 3NL
Received
3 Sept 2025
Validated
3 Sept 2025
Ward
WD34 - Denbigh Caledfryn Henllan
Parish
Denbigh TC (01)
Case officer
Show
Target decision
29 Oct 2025
Decision
Certify
Decision date
25 Sept 2025
Appeal
Dismissed · 9 Jul 2026 · Written Representations · Inspectorate case 6005752 ↗
Applicant
Show
Agent
BDS Gwynedd

How this decision compares

Decided in 22 days from validation, 33 days faster than Denbighshire's median of 55 for lawful development certificates. Approved, as 95% of lawful development certificates here are.

55%decided within 8 weeks
95%approved
23decided in the last year

Plota live figures for lawful development certificates decided by Denbighshire in the last twelve months, from validation. Denbighshire decision record →

Consultation & key dates

Statutory expiry
29 Oct 2025

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved
Bryn Hyfryd Mount Pleasant, Denbigh, Denbighshire, LL16 3LS
Codi ystafell ardd i'w defnyddio fel stiwdio artistiaid / Erection of a garden room to be…
01/2025/0459/HH
2025 Approved
Ty Tan Y Gwalia, 21 - 23 Tan Y Gwalia, Denbigh, Denbighshire, LL16 3NN
Amnewid ffliw boeler presennol i'r prif ddrychiad / Replacement of existing boiler flue t…
01/2025/0252/HH
2025
Halifax, 58 - 60 High Street, Denbigh, Denbighshire, LL16 3LB
Rhannu'r llawr gwaelod i ffurfio 2 siop a thrawsnewid y lloriau uchaf yn 2 fflat hunangyn…
01/2025/0235/LBC
2025
Halifax, 58 - 60 High Street, Denbigh, Denbighshire, LL16 3LB
Rhannu'r llawr gwaelod i ffurfio 2 siop a thrawsnewid y lloriau uchaf yn 2 fflat hunangyn…
01/2025/0234/PF
2023 Approved
58-60, High Street, Denbigh, Ll16 3Lb
Tynnu arwyddion, ATM a gwneud yn dda o flaen siop (Cais Adeilad Rhestredig) / Removal of…
01/2023/0793
2019 Approved
Rock House, Highgate, Denbigh, Ll16 3Le
Newid defnydd unedau siop llawr gwaelod i ffurfio 1 fflat hunangynhwysol / Change of use…
01/2019/0332
2020 Approved
St Josephs Cottage, Tan Y Gwalia, Denbigh, Ll16 3Nn
Gosod ffliw ar ddrychiad cefn yr annedd / Installation of flue to rear elevation of dwell…
01/2020/0433
2019 Withdrawn
Rock House, Highgate, Denbigh, Ll16 3Le
Newid defnydd unedau siop llawr gwaelod i ffurfio 2 fflat hunangynhwysol / Change of use…
01/2019/0243
2018 Approved
First Floor, 44-46, High Street, Denbigh, Ll16 3Lb
Newid defnydd mannau storio llawr cyntaf i ffurfio 1 fflat hunangynhwysol (cais Adeilad R…
01/2018/1096
2018 Approved
First Floor, 44-46, High Street, Denbigh, Ll16 3Lb
Newid defnydd mannau storio llawr cyntaf i ffurfio 1 fflat hunangynhwysol / Change of use…
01/2018/1095
2017 Approved
Ar Graig, Tan Y Gwalia, Denbigh, Ll16 3Nn
Gwaith i 1 coeden ceirios yn Ardal Gadwraeth Dinbych / Works to 1 no. cherry tree within…
01/2017/0897
2017 Approved
Flat Above Ji-Binc, 50-52, High Street, Denbigh, Ll16 3Lb
Addasiadau i'r fflat presennol ar loriau uwch i ffurfio 2 fflatiau hunangynhwysol / Alter…
01/2017/0932
2016 Approved
St Josephs Cottage, Tan Y Gwalia, Denbigh, Ll16 3Nn
Torri Coeden Onnen wedi ei lleoli yn Ardal Gadwraeth Dinbych / Felling of Ash Tree situat…
01/2016/0561

Sale prices: Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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.