La Maison Maret, Trinity
Description
FREEHOLD - 12,945sqft. A Remarkable Historic Jersey Estate with Land, Pool & Tennis Court, This substantial historic estate represents an increasingly rare opportunity to acquire a significant Jersey property that has remained within the same family since 1949., With origins understood to date back to the 1700s, and later additions made during the 1920s and 1930s, the property has evolved over generations to create an extensive family home of considerable character and scale. Today, the estate comprises a seven-bedroom principal residence, separate four-bedroom accommodation, substantial former agricultural buildings and an impressive range of leisure facilities, all set within extensive grounds and adjoining fields., The principal house retains a wealth of period detail and provides generous accommodation. Impressive granite fireplaces, exposed timber beams, period doors and sash windows are reminders of the property's long history, while its substantial proportions provide an exciting canvas for a new owner to sensitively restore and reimagine the house for modern family living., At the heart of the home are its principal reception spaces, including an impressive formal living and dining room with a magnificent granite fireplace and high ceilings. A characterful study provides a quieter retreat., The kitchen enjoys views onto the rear courtyard and beyond. Across the upper floors are the majority of the home's seven bedrooms together with bathroom facilities., Separate from the main residence is a four-bedroom flat positioned above part of the outbuildings. With its own entrance, separate kitchen and living space, two bathrooms and a walled garden, this provides valuable additional accommodation for extended family, guests or staff, or potential income-producing use, subject to any necessary permissions., The estate's extensive outbuildings are a particularly notable feature. A substantial former milking shed retaining much of its original agricultural character, alongside workshop and storage areas, a former dairy and log store. Beneath the terrace lies a temperature-controlled wine cellar, adding another distinctive element to this fascinating property. Further areas may also offer scope for adaptation, subject to planning and the relevant consents., Outside, the property comes into its own. Mature formal gardens surround the house, providing established planting and lawns, while a swimming pool and adjoining pool house create a wonderful setting for summer entertaining. A full-size tennis court provides a further recreational amenity., This is a property that will appeal to a buyer with imagination and an appreciation for Jersey's architectural heritage. Whilst modernisation and refurbishment are required, the combination of a substantial principal residence, independent accommodation, extensive outbuildings, leisure facilities and land creates an exceptional opportunity to breathe new life into a much-loved family estate., Rich in history and individuality, this is far more than simply a house for sale: it is an opportunity to become the next custodian of a remarkable Jersey home and shape the next chapter of an estate that has evolved over centuries., Size 12,945sqft approximately, Living Space Substantial principal residence arranged over three floors, offering generous reception accommodation including a formal living/dining room with an impressive granite fireplace, characterful study, kitchen and useful ancillary and utility spaces., Sleeping Accommodation Main House Seven bedrooms within the principal house with four existing bathrooms/cloakroom facilities., Sleeping Secondary Accommodation Separate four-bedroom flat with its own entrance and a walled garden., Services Mains electricity Oil-fired heating Mains drains Private water supply (although mains is available in the road to connect to), Parking Gated entrance opening onto a substantial gravelled parking and turning courtyard, with additional access., Outbuildings Two substantial former milking sheds/barns, former dairy, workshop and storage areas, log store and temperature-controlled wine cellar. Further potential may exist within the ancillary buildings, subject to all necessary consents., Grounds & Leisure Mature formal gardens and lawns, swimming pool with adjoining pool house, full-size tennis court., Listing Grade 2 https://www.gov.je/citizen/Planning/Pages/HistoricEnvironmentDetail.aspx?s=3&r=TR0173,
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 Trinity, 1,202.6 m² of known floor area. Adjust build quality or size for this property
Value added is the extra floor area priced at £7,114/m² — the midpoint asking price per m² among 8 Trinity 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 |
£99,598 | £70,000 14 m² · mid spec new build range £56,000–£84,000 |
+£29,598 | 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 |
£142,283 | £60,000 20 m² · mid spec refurb range £40,000–£80,000 |
+£82,283 | 86% (84) |
| Two-storey extension Roughly 14 m² on each of two floors. ~28 m² |
£199,196 | £140,000 28 m² · mid spec new build range £112,000–£168,000 |
+£59,196 | 83% (193) |
| Garage, annexe or outbuilding Detached space is worth less per m² than main-house floor area. ~18 m² |
£76,833 | £90,000 18 m² · mid spec new build range £72,000–£108,000 |
−£13,167 | 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.
Planning history
No planning application found in the last 3 years for this address.
Estimate the cost of work you're considering
No live planning permission is on file for this address, so there's nothing to price directly — pick the kind of work you're weighing up instead, using the same cost ranges this site applies to real Jersey planning applications.
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.
See the 27 architects, structural engineers and builders working in Jersey. This can't be narrowed to firms who've filed nearby this property or this parish — Jersey's planning register carries no applicant, agent or architect field to match against (see the professionals directory).
Similar properties
Other current listings for sale in Trinity, 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.
