80 Porthpean Road St Austell Cornwall PL25 4PN Data via plota.co.uk

Decided PA25/07697
Appeal
Dismissed · 21 Apr 2026 · Written Representations · Inspectorate case 6002820 ↗
Council
Cornwall 7.9/10
Date received
around 28 Oct 2025
Date validated
28 Oct 2025
Postcode
PL25 4PN

Description

Proposed conversion of loft, new roof dormer to the rear elevation and associated works. Data via plota.co.uk

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Last checked

Site constraints 6

Air quality management area: AQMA Area 5 - St Austell
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
Radon affected area, class 6
An estimated 30% or more 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 ↗
Also on the record
Scheduled monument about 223 m away: Standing stone called the 'Long Stone' in the grounds of Penrice School; World heritage site about 240 m away: Cornwall and West Devon Mining Landscape; Inside the St Austell built-up area; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 3, but it predates the buildings here and the current map does not class it as farmland.
Not affected
Outside flood zones 2 and 3 · Not green belt

Checked on 10 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. 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 £225,000 in January 2016. Semi-detached house, freehold.

14 January 2016£225,000
4 April 1996£63,000

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

Building

Floor area121 m² (1,302 sq ft)
Energy ratingD (62 out of 100), could reach B
PropertySemi-detached house, 5 habitable rooms
Built1930 to 1949
HeatingBoiler and radiators, mains gas
WallsCavity wall, filled cavity

From the energy performance certificate lodged in August 2015, 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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Historical activity at this location

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

This property

Previous applications at this address

2023 Approved
Proposed loft conversion.
PA23/02161
Within ~100m

Nearby activity

2025 Approved
101 Porthpean Road St Austell Cornwall PL25 4PN
Proposed ground floor and first floor extension and refurbishment works
PA25/07250
2022 Withdrawn
116 Porthpean Road St Austell Cornwall PL25 4PN
Pre application advice to convert existing large double garage into a small one bedroom b…
PA22/01542/PREAPP
2020 Withdrawn
Rolling Hills 130 Porthpean Road St Austell Cornwall PL25 4PN
1. Removal of four garages and a boat shed and replacement with a workshop for domestic u…
PA20/02867
2020 Refused
101 Porthpean Road St Austell PL25 4PN
Resubmission of approved application PA18/04963 for the 'Construction of a detached garag…
PA20/04172
2018 Approved
101 Porthpean Road St Austell Cornwall PL25 4PN
Construction of a detached garage/studio/annexe with variation of condition 4 of decision…
PA18/12138
2018 Approved
Rolling Hills 130 Porthpean Road St Austell PL25 4PN
1. Removal of four garages and a boat shed and replacement with a workshop for domestic u…
PA17/11795
2018 Approved
101 Porthpean Road St Austell Cornwall PL25 4PN
Construction of a detached garage/studio/annexe
PA18/04963
2018 Withdrawn
101 Porthpean Road St Austell Cornwall PL25 4PN
Non Material Amendment to Application No. PA18/04963 dated 20th July 2018 for the Constru…
PA18/11595
Cornwall
Planning Authority Score
7.9/10
Good
#28 of 296 councils
Relevant to this application:
Householder decisions

Cornwall is faster than most councils at deciding householder applications, ranking #64 out of 296. Householder applications are more likely to be approved here than most councils, with a 97% approval rate vs 90% nationally.

More permissive than most councils
97% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Cornwall decision statistics
Based on MHCLG data, the year to March 2026
92%
Overall approval rate
Above avg (87%) #79 of 296
97%
Householder approved
Above avg (90%) #28 of 296
76%
Decided in 8 weeks
Above avg (63%) #64 of 296
35%
Extended time limit
Below avg (41%) #101 of 296
82%
Minor dwellings approved
1180 decided (1-9 homes)
94%
Major dwellings approved
67 decided (10+ homes)
93%
Change of use approved
194 decided
4,839
Total decisions
363 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

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.