Le Mont de Rozel, St. Martin, St Martin
Description
Carteret House is an exquisite and incredibly rare opportunity to acquire a contemporary residence of exacting standards, positioned in a privileged cliff-top location within the Crown Dependency of Jersey, Channel Islands. Named after the French port of Carteret, which the property overlooks, the views also extend to Les Écréhous — a group of islands and rocks situated six miles (9.7 km) north-east of Jersey and eight miles (13 km) from France. These form part of the Bailiwick of Jersey and are administratively within the Parish of St. Martin, which Carteret House calls home. Extensively curated by the current owner over the past three and a half years, enormous care has been invested in preparing Carteret House for its next chapter following a comprehensive programme of renovation and modernisation. Bespoke finishes and joinery are complemented by an overarching sense of quality, with the property functioning effortlessly for the international purchaser — offering automated features that can be controlled from anywhere in the world. Bespoke, electric Corten steel gates open to a paved parking area, leading naturally towards the main entrance and adjacent terracing. These terraces wrap around the property, creating seamless connectivity between internal and external spaces. Arranged over three floors and extending to 13,398 sq. ft., Carteret House provides a main residence with extensive reception areas, superb entertaining space, and five bedroom suites — each designed to frame the panoramic views. In addition, the property includes a generous two-bedroom apartment with independent access and privacy, positioned above uncompromised garaging for six cars. Elevated above a private cove — accessible only via the property or by sea — a winding pathway meanders through pro…
Also mentioned in other agents' listings of this property: sea views, garage.
Combined from 2 agents' own descriptions of this property — see "Also listed by" below for each agent's original wording.
- bathrooms: 8 (Livingroom) vs. 7 (Savills Jersey)
Also listed by 1 other agent
Matched automatically against this site's own listings by title and price — not a unique-ID lookup, so treat this as a strong signal rather than a certainty.
Nearby
- PubThe Rozel0.44 mi · 9 min walk · 1 min drive
- RestaurantCafé Dodo2.0 mi · 44 min walk · 7 min drive
- CaféRozel Bay Tea Room0.53 mi · 11 min walk · 2 min drive
- SupermarketValley Foods Ltd1.8 mi · 38 min walk · 6 min drive
- AirportJersey Airport9.4 mi · 30 min drive
- Petrol stationUnnamed petrol2.7 mi · 57 min walk · 9 min drive
- GP surgeryIndigo House Surgery5.5 mi · 119 min walk · 18 min drive
- SchoolSt Martin's School1.6 mi · 34 min walk · 5 min drive
- Hospital / medical centreRosewood House2.8 mi · 59 min walk · 9 min drive
Nearest match in each category, from a fixed list of Jersey amenities — not every pub, café or shop on the island, so treat this as a useful sample, not a complete picture. Distances are straight-line ("as the crow flies"), multiplied by 1.3 to approximate real road-network distance — this is an estimate, not turn-by-turn routing, and actual walking/driving routes may differ. Times assume constant average speeds appropriate to Jersey's roads and 40mph limits: walking 4.5 km/h, cycling 14 km/h, driving 30 km/h — not open-road speeds, and they don't account for traffic, parking or terrain.
What would this cost to buy?
A live estimate, not a quote — change any figure below and everything recalculates immediately. Stamp duty / Land Transaction Tax uses Jersey's own standard-residence bands (see buying property in Jersey for the full table and how share-transfer property differs); the mortgage side is a standard capital-and-interest repayment calculation, not an offer from any lender.
Getting connected
Jersey has two residential broadband providers: JT — the island's own former state telecom, now Jersey's full-fibre network builder — and Sure, which completed absorbing Airtel-Vodafone's Channel Islands customer base in September 2025 (Airtel-Vodafone no longer trades as a separate operator here). Jersey's copper phone network is largely already history: JT finished building an island-wide fibre-to-the-home network back in July 2018 and has been retiring copper ever since — well ahead of Guernsey, where the equivalent copper switch-off was still under way through 2026. Always confirm actual coverage and switch-over status at this specific address directly with JT or Sure before assuming.
What would improving it be worth?
Modelled for this property in St Martin, 1,244 m² of known floor area. Adjust build quality or size for this property
Value added is the extra floor area priced at £8,500/m² — the midpoint asking price per m² among 21 St Martin properties currently for sale that publish a floor area. Cost uses £4,000–£6,000/m² new build and £2,000–£4,000/m² refurbishment, depending on quality. Net is against the mid rate. The last column is how often Jersey actually approves that kind of application.
Unlike the value side of this table (priced from Jersey's own current asking prices), the £4k–6k new-build / £2k–4k refurbishment rates are carried across from guernseyproperties.gg, where they were supplied by that site's owner from local Guernsey experience — they have not been independently verified for Jersey, and construction costs plausibly differ between the islands. Treat the Cost and Net columns as an unverified placeholder until a Jersey-specific quantity surveyor's rate replaces them.
| Improvement | Value it might add | Likely cost | Net | Approved |
|---|---|---|---|---|
| Add a bedroom (single-storey extension) A modest double plus circulation, built new. ~14 m² |
£119,000 | £70,000 14 m² · mid spec new build range £56,000–£84,000 |
+£49,000 | 86% (569) |
| Loft conversion with a bedroom Works inside an existing roof, so it prices as refurbishment rather than new build — which is why it usually wins. ~20 m² |
£170,000 | £60,000 20 m² · mid spec refurb range £40,000–£80,000 |
+£110,000 | 86% (84) |
| Two-storey extension Roughly 14 m² on each of two floors. ~28 m² |
£238,000 | £140,000 28 m² · mid spec new build range £112,000–£168,000 |
+£98,000 | 83% (193) |
| Garage, annexe or outbuilding Detached space is worth less per m² than main-house floor area. ~18 m² |
£91,800 | £90,000 18 m² · mid spec new build range £72,000–£108,000 |
+£1,800 | 82% (216) |
Two things it cannot see. First, it prices floor area at the local average rate — it doesn't know your plot, your roof, your outlook, or whether an extension is physically possible; nor whether your street has a ceiling price that no amount of extending beats. Second, the rate comes from asking prices of other properties currently for sale that state a floor area — a minority of Jersey's live stock, so treat the sample sizes shown as real limits, not decoration.
The obvious alternative method is worse, which is why it isn't used here: comparing a typical 3-bed with a typical 4-bed suggests a bedroom is worth far more than it actually is — a bigger bed-count usually means a bigger house on a bigger plot, so that figure measures the mix of what's for sale, not the value of adding a room.
Before spending anything, get a builder's quote and talk to an architect — the type-of-work approval rates show how often that kind of application actually succeeds.
Sale history
No prior sale found in the Jersey property register for this address.
All 11 recorded sales on Le Mont de Rozel
Planning history
| Application | Description | Status |
|---|---|---|
| P/2025/10336 | Install electrical feeder pillar on the South boundary. | Approved Full record |
| P/2025/10275 | Demolition of garage, storeroom and conservatory. Construct extensions and roof terraces to dwelling house with associated hard and soft lan… | Refused Full record |
| RP/2025/10095 | REVISED PLANS to P/2025/0007 (REVISED PLANS to P/2021/1448 (Demolish existing dwelling. Construct 1 No. five bed dwelling.): Amendments to t… | Approved Full record |
Matched by house name/street and parish against Jersey planning applications decided in the last 3 years — coverage is partial and not a unique-ID lookup.
Estimated cost of live planning permissions
Jersey planning permissions lapse after a set period if unbuilt; these applications fall inside the last 3 years and were not refused, so they are presumptively still capable of being implemented.
- P/2025/10336 — Boundary / access works
£6,250–£18,750Install electrical feeder pillar on the South boundary. - RP/2025/10095 — Demolish & rebuild dwelling
£2,750–£4,000 per m² of new build (total depends on floor area — not stated in the planning record)REVISED PLANS to P/2025/0007 (REVISED PLANS to P/2021/1448 (Demolish existing dwelling. Construct 1 No. five bed dwellin…
The work type shown is inferred automatically from the wording of the planning application's own description — it isn't stated by the applicant. The base cost range comes from published UK national renovation/build-cost guides for that type of project, and a ~25% uplift has been added to reflect higher shipping/import and skilled-labour costs in the Channel Islands — this is an estimate, not a published index. These figures are indicative only, not a quote: actual cost depends on specification, finish, ground conditions and the contractor. For anything serious, get a quote from a local quantity surveyor or builder.
Similar properties
Other current listings for sale in St Martin, ranked by how many of the reasons on each card it shares with this one (closest asking price breaks ties) — every reason shown is exactly why it's here, not a hidden score.
