Gardeners Cottage Perranarworthal Truro Cornwall TR3 7NT Data via plota.co.uk

PA26/00370/PREAPP - Pre-Application Publicly Available Decided

Proposal

Pre application advice for amendments to windows and door openings of approval , for the extension and alteration of Gardeners Cottage within the curtilage of Tullimaar House (Grade II). The amendments include minor adjustments to window sizes and positions, relocation of the porch door, a small increase in the extension eaves height, the addition of a conservation rooflight, and limited internal layout alterations to rationalise the staircase and improve compliance with Building Regulations Data via plota.co.uk

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View original council record ↗Last checked 24 Aug 2026, 23:03

Street View

Application progress

✓

Received

17 Mar 2026

✓

Closed - advice given

17 Aug 2026

Closed - advice given on 17 Aug 2026 · Self Sign Off (Area Team) · Last checked 22 Aug 2026

Documents 17

Associated applications 4

Part of

FullApproved6 Aug 2024council archive
- AmendmentPre application advice for amendments to windows and door openings, for the extension…This application17 Mar 2026PA26/00370/PREAPP
- Show 2 more · 2 pending
  - Listed buildingListed building consent for: Amendments to windows and door openings (including relocation…17 Sep 2026PA26/06245
  - FullAmendments to windows and door openings (including relocation of the porch door, minor…17 Sep 2026PA26/06236

Site constraints 8

World heritage site 15 m away: Cornwall and West Devon Mining Landscape

Its setting is a consideration for work nearby.

Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.

Historic England ↗

Habitat network: Other Priority Habitats - NEZ

Where habitat is joined up enough to work as a network. Context, not a constraint on its own.

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

National landscape 148 m away: Cornwall; 5 listed buildings within 150 m; Inside the Perranarworthal built-up area; Priority habitat 11 m away: Deciduous woodland; 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: Pre-Application Publicly Available
Postcode: TR3 7NT
Received: 17 Mar 2026
Validated: 17 Mar 2026
Ward: Mylor, Perranarworthal And Ponsanooth
Parish: Perranarworthal
Case officer: Show
Target decision: 30 Apr 2026
Decision: Closed - advice given
Decision date: 17 Aug 2026
Decision level: Self Sign Off (Area Team)
Applicant: Show
Agent: Kast Architects

Public comments

No public comments yet.

Last counted 22 Aug 2026

Read the comments on the council site ↗

Consultation & key dates

Statutory expiry: 30 Apr 2026
Env. assessment: No

Historical activity at this location

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

This property

Previous applications at this address

2021 Withdrawn

Pre-application advice for Proposed extension, alteration and conversion of existing Gard…

PA21/00732/PREAPP 1 Jun 2021

Within ~100m

Nearby activity

2023 Approved

Mariners Perranarworthal Truro Cornwall TR3 7NT

Listed Building Consent: Replacement ridge tiles

PA23/05520 28 Sep 2023

2018 Approved

Mariners Perranarworthal Truro Cornwall TR3 7NT

Installation of a wood-burner

PA18/10473 21 Dec 2018

2016 Withdrawn

Tullimaar Perranarworthal Truro Cornwall TR3 7NT

Listed Building Consent for the installation of fire alarm system

PA16/11097 12 Jan 2017

2016 Approved

Tullimaar Perranarworthal Truro Cornwall TR3 7NT

Submission of details to discharge condition 3 of PA14/03494 - To reinstate larger window…

PA16/00805 22 Mar 2016

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