Land South Of Trethiggey Cottages Little Trethiggey Quintrell Downs Cornwall TR8 4QR Data via plota.co.uk

PA26/04063 - Listed Building Consent Awaiting decision

Proposal

Listed Building Consent for the demolition of existing double garages, erection of a purpose-built home office for ancillary residential use and the change of use of land to consolidate the application site and Trethiggey House into a single planning unit. Data via plota.co.uk

View original council record ↗Last checked

Application progress

✓
Received
around 23 Jul 2026
✓
Consultation
19 Aug 2026
Decision
Expected by 17 Sept 2026

Under consideration

No decision has been issued yet. Plota predicted a decision around 9 Oct 2026; it is now day 78.

The consultation period closed on 9 Sept 2026.

Site constraints 4

Grade II listed: Trethiggey Villa
List entry 1312441 · 1 m away
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.
Historic England ↗
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
Inside the Quintrell Downs 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 · 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.

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Important details

Council
Cornwall
Application type
Listed Building Consent
Postcode
TR8 4QR
Received
around 23 Jul 2026
Validated
23 Jul 2026
Ward
St Columb Minor And Colan
Parish
Colan
Case officer
Show
Target decision
17 Sept 2026
Applicant
Show
Agent
Planix.UK Planning Consultants Ltd

Decision outlook

Day 78, past the statutory target. 94% of listed building works in Cornwall are decided within thirteen weeks, which runs to 22 Oct 2026; extensions of time are common, and the council need not decide on the day. Last seen undecided on 7 Oct 2026.

Day 7822 days past the 56-day target
75%decided within 8 weeks
99%approved
353decided in the last year

Plota live figures for listed building works decided by Cornwall in the last twelve months, from validation. Cornwall decision record →

Public comments

No public comments yet.

Last counted 7 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-14857289
Planning Portal ref
PP-14857289
Comments by
9 Sept 2026
Site or press notice
19 Aug 2026
Statutory expiry
17 Sept 2026
Env. assessment
No
Cornwall
Planning Authority Score
7.9/10
Good
#28 of 296 councils
Relevant to this application:
Change of use

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