Bay Cottage 17 Lower Castle Road St Mawes Truro Cornwall TR2 5DR Data via plota.co.uk

PA26/07001 - Full application Awaiting decision
Extensions & alterationsSolar & renewables

Proposal

Proposed replacement chimney, slate roof covering, replacement rooflight, replacement guttering and recessed photovoltaic panels Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
around 7 Oct 2026
✓
Consultation
12 Oct 2026
Decision
Expected by 2 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision around 29 Nov 2026, from Cornwall's recent extensions.

Comments are open until 13 Nov 2026

Comment on this application ↗

Documents 4

Statements & assessments 3

PDF BAT AND NESTING BIRD VISUAL SURVEY Assessment - Ecological · 7 Oct 2026 View ↗ PDF DESIGN AND ACCESS STATEMENT Statement - Design and Access · 7 Oct 2026 View ↗ PDF ECOLOGY TRIGGER LIST Ecology Report Trigger Table · 7 Oct 2026 View ↗

Application forms 1

PDF APPLICATION FORM Application Form · 7 Oct 2026 View ↗

All documents on the council site ↗

Site constraints 12

Grade II listed: Bay Cottage, Seacliffe Warren and West Warren
List entry 1328945 · 7 m away · 10 more listed buildings within 150 m (10 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 10 with distances
Historic England ↗
Cornwall National Landscape
Great weight to conserving the landscape; major development restricted.
Previously an area of outstanding natural beauty, which is still the designation in law. Since 2023 authorities must seek to further its purpose, not merely have regard to it.
St Mawes 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.
Heritage coast: The Roseland
A defined stretch of undeveloped coastline.
Development inconsistent with keeping the coast undeveloped is resisted.
Special area of conservation 18 m away: Falmouth Bay to St Austell Bay
Work nearby can need a habitats assessment.
Harm to a protected site is only accepted where there is no alternative and an overriding public interest.
Public byway open to all traffic 24 m away
Matters where it crosses or adjoins the site: obstructing a path without a diversion order is an offence, and work cannot start until the order is confirmed.
Compiled from highway authority data, not the legal definitive map. A few authorities have not published, so no path shown is not proof there is none.
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 246 m away: Holy well of St Mawes, 80m east of St Mawes Methodist Church; SSSI 439 m away: Lower Fal & Helford Intertidal SSSI; Inside the St Mawes built-up area; Open access land 45 m away: Access Land - Combined Open Country, Registered Common Land and Section 16 Dedicated Land. MoD Byelaw, Section 28 Exclusions, Racecourses and Aerodromes and ECP Margin have been removed.; 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 12 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 5

Last sold for £2,000,000 in September 2025. Terraced house, freehold.

11 September 2025£2,000,000
6 May 2022£2,050,000
6 April 2016£715,000
21 December 2006£610,000
23 April 1999£317,000

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

Building

Floor area78 m² (840 sq ft)
Energy ratingG (19 out of 100), could reach D
PropertyMid-terrace house, 3 habitable rooms
BuiltBefore 1900
HeatingRoom heaters, electric
WallsSandstone, as built, no insulation (assumed)

From the energy performance certificate lodged in April 2014, 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 Jul 2026Decided

Trevu 39 Lower Castle Road St Mawes Truro Cornwall TR2 5DR

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17 Jun 2026Approved

Pilchards 2 Lower Castle Road St Mawes Truro Cornwall TR2 5DR

Listed Building Consent to reinstate two internal timber frame partitions with a...

PA26/04084
12 Aug 2026Refused

Hir Kemmyns Upper Castle Road St Mawes Truro Cornwall TR2 5BZ

Works to trees subject to a Tree Preservation Order (TPO), works include felling...

PA26/05639
17 Jun 2026Pending

Playing Field Upper Castle Road St Mawes Cornwall TR2 5BY

Proposed 17 domestic affordable homes

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Nearby new applications

7 Oct 2026Pending

Bay Cottage 17 Lower Castle Road St Mawes Truro Cornwall TR2 5DR

Listed Building Consent for proposed replacement chimney, slate roof covering, r...

PA26/07002
28 Sept 2026Pending

Ship & Castle Hotel The Waterfront St Mawes TR2 5DG

Listed Building Consent for internal alterations to Victory Cottage, including r...

PA26/06667
14 Sept 2026Pending

Seaglass House 4 Carrick Way St Mawes Truro Cornwall TR2 5BB

Proposed Single storey rear extension

PA26/06187
17 Aug 2026Pending

Porthcuel Trelawney Road St Mawes Truro Cornwall TR2 5BU

Proposed alterations and extension to main house including internal remodelling.

PA26/05724
12 Aug 2026Refused

Hir Kemmyns Upper Castle Road St Mawes Truro Cornwall TR2 5BZ

Works to trees subject to a Tree Preservation Order (TPO), works include felling...

PA26/05639

Important details

Council
Cornwall
Application type
Full application
Postcode
TR2 5DR
Received
around 7 Oct 2026
Validated
7 Oct 2026
Ward
St Goran, Tregony And The Roseland
Parish
St. Just-in-Roseland
Case officer
Show
Target decision
2 Dec 2026
Applicant
Show
Agent
CAD Architects Limited

Decision outlook

Day 22 of the 56-day target. Cornwall usually decides extensions by day 53.

Day 2234 days to the 56-day target
84%decided within 8 weeks
95%approved
100%go to committee

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

Public comments

No public comments yet.

4 neighbours consulted · Last counted 27 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15280145
Planning Portal ref
PP-15280145
Neighbours
12 Oct 2026
Consultation
12 Oct 2026
Comments by
13 Nov 2026
Site or press notice
23 Oct 2026
Statutory expiry
2 Dec 2026
Env. assessment
No

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Withdrawn
Riviera Gardens Riviera Lane St Mawes Truro Cornwall TR2 5BG
Exception notice for 1 x young Monterey Pine due to danger of it moving closer to the hou…
PA25/00224/PREAPP
2024 Approved
Riviera Gardens Riviera Lane St Mawes Truro Cornwall TR2 5BG
Works to trees subject to a tree preservation order TPO: Crown raise and reduce south eas…
PA24/09091
2024 Approved
Hotel Tresanton 27 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Proposed First Floor Bathroom Extension and Juliet Balcony to Upper Tresanton Accommodati…
PA24/05936
2024 Approved
Seacliffe Warren 17 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Listed building consent for proposed garden summerhouse (reduced size)
PA24/03983
2023 Approved
26 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Application for tree works in a Conservation Area (CA): Felling of two Monterey Cypress t…
PA23/01890
2023 Approved
Carrick Du Upper Castle Road St Mawes Truro Cornwall TR2 5BZ
Works to trees in a conservation area (CA) - T1, T2 and T3 (Monterey Cypresses) - Fell
PA23/01908
2023 Approved
24 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Re-landscaping rear garden, to include 2 new sheds, pergola, railings and services
PA23/00191
2022 Approved
Seacliffe Warren 17 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Listed Building Consent for proposed garden summerhouse.
PA22/10479
2022 Approved
Seacliffe Warren 17 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Proposed garden summerhouse.
PA22/10478
2022 Approved
Seaward 24 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Works to trees within a Conservation Area namely fell a Small Elm Tree (T1) and replace w…
PA22/09891
2021 Approved
Trewarren Riviera Lane St Mawes TR2 5BG
Proposed various alterations to the dwelling including the replacement of all of the wind…
PA21/09222
2021 Approved
Our Cottage 16 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Proposed rear extension and internal alterations.
PA21/08761
2021 Approved
23 Lower Castle Road St Mawes TR2 5DR
Proposed refurbishment and extension to existing summerhouse
PA21/07297
2021 Approved
26 Lower Castle Road St Mawes TR2 5DR
Works to trees namely:- (T3) Monterey Cypress, prune - within a Conservation Area
PA21/06953
2020 Approved
Seacliffe Warren 17 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Listed building consent for proposed internal alterations and refurbishment works
PA20/08029
2020 Approved
Seacliffe Warren 17 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Proposed internal alterations and refurbishment works
PA20/08028
2020 Approved
Bay Cottage 17 Lower Castle Road St Mawes TR2 5DR
Listed building consent for minor internal alterations to existing modern extension, new…
PA20/10871
2020 Approved
Bay Cottage 17 Lower Castle Road St Mawes TR2 5DR
Minor internal alterations to existing modern extension, new minor pitched roof link and…
PA20/10870
2020 Approved
Penrosa Riviera Lane St Mawes Truro Cornwall TR2 5BG
Proposed Infill Extension, Conversion of Garage to Bedroom, External Cladding & Internal…
PA20/10381
2020 Withdrawn
Seacliffe Warren 17 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Pre application advice for roof structure repairs, refurbishment and layout alterations t…
PA20/00749/PREAPP
2016 Approved
West Warren 17 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Listed building consent to increase height of chimney stack and pot.
PA16/08175
2016 Withdrawn
West Warren Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Listed building consent to raise the height of a chimney pot
PA16/05150
2016 Approved
Hotel Tresanton 27 Lower Castle Road St Mawes TR2 5DR
Proposed Juliet balconies To First & Second Floor Bedrooms
PA16/03455
2016 Approved
Tavern Rocks 25 Lower Castle Road St Mawes Truro Cornwall TR2 5DR
Removal of two branches on a tree
PA16/05305
2016 Refused
Riviera Gardens Riviera Lane St Mawes TR2 5BG
Alterations and Extensions to the existing dwelling.
PA16/03123
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.

Freehold boundary: © Crown copyright and database rights 2026, HM Land Registry. Polygons © Crown copyright and database rights 2026 Ordnance Survey 100026316. Conditions of use

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.