Development watch

Guernsey properties where a sale in the States of Guernsey property register was followed, in the same year or a later one, by a planning application in this site's planning dataset (see /planning for its current coverage window) — a pattern consistent with someone buying a property, getting permission to develop it, and in some cases reselling it. This is inferred purely by matching addresses and dates across two public registers; there is no applicant name in this data, so it can never confirm who applied for permission or whether they are a professional developer. The "Likely developer" flag is a further guess, based only on whether the application's own wording implies more than one resulting home (multiple dwellings/apartments/flats, or "residential development") — a single-house rebuild or extension is tagged "Renovation/extension scale" instead. Treat every row here as a lead worth checking, not a confirmed fact. 1,946 matched applications on file.

Each row's estimated cost of works is inferred automatically from its own description text, using published UK renovation/build-cost guides plus a ~25% Channel Islands premium — a rough guide only, not a quote, and not stated by the applicant.

All (1,946)Back on the market (104)Worth watching (1,842)

Worth watchingRenovation/extension scale

Maison Gougeres Vale Road St. Sampson Guernsey GY2 4DP

Prior sale: 2026-05-19 · £550,875
Planning app: FULL/2026/1424 — Pending Application details
Official record
Description: Erect porch to east (front) elevation and erect bike shed to east (front) of property.
Summerhouse / small garden structure
Est. cost of works: £10,000–£22,500

Worth watchingRenovation/extension scale

Les Vardes Farm Route De Port Grat St. Sampson Guernsey GY2 4TB

Prior sale: 2023-08-10 · £1,700,000
Planning app: FULL/2026/1421 — Pending Application details
Official record
Description: Install replacement roof covering and install window to north-east gable to outbuilding/workshop to north of site (Protected Building).
Garage / outbuilding / annexe
Est. cost of works: £31,250–£56,250

Worth watchingRenovation/extension scale

Kefi La Rochelle Road Vale Guernsey GY3 5DZ

Prior sale: 2025-05-27 · £85,000
Planning app: FULL/2026/1418 — Pending Application details
Official record
Description: Erect single storey extension to north (front) elevation and associated works.
Single-storey extensionSingle-storey
Est. cost of works: £56,250–£93,750

Worth watchingRenovation/extension scale

La Marette Rue Des Marettes St. Martin Guernsey GY4 6JQ

Prior sale: 2026-04-30 · £10,042,500
Planning app: FULL/2026/1405 — Pending Application details
Official record
Description: Erect gate to existing vehicle access to south-east of site.
Boundary / access works
Est. cost of works: £6,250–£18,750

Worth watchingRenovation/extension scale

La Jaoniere Val Au Bourg St. Martin Guernsey GY4 6EP

Prior sale: 2024-12-03 · £3,000,000
Planning app: FULL/2026/1395 — Pending Application details
Official record
Description: Variation to previously approved plans to demolish dwelling, erect replacement dwelling, erect single storey outbuilding, infill existing vehicle access, create relocated gated vehicle access and asso…
Demolish & rebuild dwellingDemolitionChange of useSingle-storey
Est. cost of works: £2,750–£4,000 per m² of new build (total depends on floor area — not stated in the planning record)

Back on the marketRenovation/extension scale

Claremont Rosaire Avenue St. Peter Port Guernsey GY1 1XU

Prior sale: 2026-08-27 · £404,625
Planning app: FULL/2026/1393 — Pending Application details
Official record
Description: Demolish extensions, erect single storey extension to north-east (rear) and south-east (side) elevations, install rooflights to south-west (front) and north east (rear) elevations. Remove section of w…
Single-storey extensionDemolitionSingle-storey
Est. cost of works: £56,250–£93,750

Bought 2026-08-27 for £404,625, then granted planning for renovation/extension-scale work (FULL/2026/1393) — now back on the market. This is why it's flagged "Back on the market": the address matched both the sale register and a live listing, in that order.

Claremont, Rosaire Avenue, St. Peter Port, GY1 1XU — now asking £450,000 +11% since bought
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Claremont — now asking £450,000 +11% since bought
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Worth watchingRenovation/extension scale

Coin Maison 20 Clos Du Petit Bois Rue Cauchez St. Martin Guernsey GY4 6NX

Prior sale: 2025-12-09 · £955,500
Planning app: FULL/2026/1391 — Pending Application details
Official record
Description: Remove section of hedge, alter and extend vehicle access and parking area, erect fence to west boundary and east of property.
Boundary / access works
Est. cost of works: £6,250–£18,750

Worth watchingLikely developer

Karma Route Des Coutures Vale Guernsey GY3 5QT

Prior sale: 2026-04-30 · £975,000
Planning app: FULL/2026/1376 — Pending Application details
Official record
Description: Demolish buildings and greenhouse, erect 6 dwellings, alter roadside wall and create vehicle access to east elevation and associated works.
Demolish & rebuild dwellingDemolition
Est. cost of works: £2,750–£4,000 per m² of new build (total depends on floor area — not stated in the planning record)

Bought 2026-04-30 for £975,000, then granted planning for what reads as a multi-unit scheme (FULL/2026/1376) — not matched to a current listing yet. Sale-then-multi-unit-permission is the strongest pattern this site tracks for "likely to be marketed once the work is done" — flagged here as a prediction from that pattern, not as confirmation of anyone's actual plans.

Back on the marketRenovation/extension scale

Whispering Sands Route De Carteret Castel Guernsey GY5 7UT

Prior sale: 2014-01-07 · £593,500
Planning app: FULL/2026/1348 — Pending Application details
Official record
Description: Change of use from premises of multiple occupancy (Use Class 6) to dwelling (Use Class 1).
Internal alteration / change of useChange of use
Est. cost of works: £18,750–£50,000

Bought 2014-01-07 for £593,500, then granted planning for renovation/extension-scale work (FULL/2026/1348) — now back on the market. This is why it's flagged "Back on the market": the address matched both the sale register and a live listing, in that order.

Whispering Sands — now asking £749,000 +26% since bought
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Back on the marketRenovation/extension scale

Mulberry House 11 Union Street St. Peter Port Guernsey GY1 2PS

Prior sale: 2026-02-12 · £1,608,750
Planning app: FULL/2026/1341 — Pending Application details
Official record
Description: Install replacement balustrade to existing terrace to rear elevation (Protected Building).
Internal alteration / change of use
Est. cost of works: £18,750–£50,000

Bought 2026-02-12 for £1,608,750, then granted planning for renovation/extension-scale work (FULL/2026/1341) — now back on the market. This is why it's flagged "Back on the market": the address matched both the sale register and a live listing, in that order.

Mulberry House — now asking £4,000 -100% since bought
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Worth watchingRenovation/extension scale

Le Gron Farm Rue Du Gron St. Saviour Guernsey GY7 9FR

Prior sale: 2020-12-15 · £1 Nominal — likely family transfer
Planning app: FULL/2026/1329 — Pending Application details
Official record
Description: Install hard surfaced area to north of building/barn.
Internal alteration / change of use
Est. cost of works: £18,750–£50,000

Worth watchingRenovation/extension scale

Notre Maison Rohais De Bas St. Andrew Guernsey GY6 8YY

Prior sale: 2007-08-09 · £321,000
Planning app: FULL/2026/1319 — Pending Application details
Official record
Description: Raise roof ridge and extend at 2nd floor level and erect extension, install cladding at 1st floor level to west (rear) elevation and alterations to fenestration.
Single-storey extension
Est. cost of works: £56,250–£93,750

Worth watchingRenovation/extension scale

Nevefield Brock Road St. Peter Port Guernsey GY1 1RB

Prior sale: 2025-11-25 · £711,750
Planning app: FULL/2026/1312 — Pending Application details
Official record
Description: Extend and alter at ground floor level and install solar panels to west (rear) elevation, install rooflights to east (front) elevation.
Re-roofing
Est. cost of works: £15,000–£31,250

Worth watchingRenovation/extension scale

Awali Val Au Bourg St. Martin Guernsey GY4 6EP

Prior sale: 2020-07-16 · £1,511,250
Planning app: FULL/2026/1310 — Pending Application details
Official record
Description: Raise and alter roof height to create first floor accommodation, extend and alter at lower ground floor and ground floor levels and alterations to parking area.
Re-roofing
Est. cost of works: £15,000–£31,250

Worth watchingRenovation/extension scale

1 Brock Road St. Sampson Guernsey GY2 4PL

Prior sale: 2023-02-28 · £263,000
Planning app: FULL/2026/1297 — Pending Application details
Official record
Description: Change of use of section of ground floor level from Tattoo palour to be incorporated back into residential unit/dwelling.
Internal alteration / change of useChange of use
Est. cost of works: £18,750–£50,000

Worth watchingRenovation/extension scale

Manhattan Rue Des Monts St. Sampson Guernsey GY2 4HT

Prior sale: 2004-07-22 · £304,000
Planning app: FULL/2026/1277 — Pending Application details
Official record
Description: Demolish section of wall and relocate pillar to widen vehicle access.
Boundary / access worksDemolition
Est. cost of works: £6,250–£18,750

Worth watchingRenovation/extension scale

Marchez Dessus Rue A Chiens St. Sampson Guernsey GY2 4AD

Prior sale: 2026-03-19 · £770,250
Planning app: FULL/2026/1276 — Pending Application details
Official record
Description: Erect single storey extension to west (rear) elevation and alterations to fenestration.
Single-storey extensionSingle-storey
Est. cost of works: £56,250–£93,750

Back on the marketRenovation/extension scale

Maison Hougue Jehannet La Hougue Jehannet Vale Guernsey GY3 5UF

Prior sale: 2024-10-03 · £390,000
Planning app: FULL/2026/1257 — Pending Application details
Official record
Description: Demolish chimney to east elevation, demolish and rebuild dormer windows, install replacement roof covering, fenestration and internal alterations (Protected Building) (Revised scheme).
Loft conversionDemolition
Est. cost of works: £56,250–£81,250

Bought 2024-10-03 for £390,000, then granted planning for renovation/extension-scale work (FULL/2026/1257) — now back on the market. This is why it's flagged "Back on the market": the address matched both the sale register and a live listing, in that order.

Apartment 4, Maison Hougue Jehannet — now asking £285,000 -27% since bought
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Apartment 2, Maison Hougue Jehannet — now asking £285,000 -27% since bought
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Apartment 5, Maison Hougue Jehannet — now asking £285,000 -27% since bought
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Apartment 1, Maison Hougue Jehannet — now asking £315,000 -19% since bought
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Worth watchingRenovation/extension scale

Roland House Rouge Rue St. Peter Port Guernsey GY1 1ZE

Prior sale: 2015-06-18 · £950,000
Planning app: FULL/2026/1241 — Pending Application details
Official record
Description: Install replacement roof, captain's dormer window and rooflight with enlarged dormer window to south (rear) elevation.
Loft conversion
Est. cost of works: £56,250–£81,250

Worth watchingRenovation/extension scale

La Bas Courtil Les Bas Courtils Road St. Sampson Guernsey GY2 4BP

Prior sale: 2022-03-17 · £477,750
Planning app: FULL/2026/1239 — Pending Application details
Official record
Description: Erect extension at 2nd floor level, single storey extension to north (rear) elevation, erect 2 dormer windows with balconies to 2nd floor level, erect porch with terrace at 1st floor level to south (f…
Single-storey extensionSingle-storeyLoft conversion
Est. cost of works: £56,250–£93,750

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