La Rue De La Mare Ballam, St. John, St John
Description
Spacious family home with cottage and converted barn. Characterful 7-bedroom estate combining a 5-bed main house and 2-bed cottage Architecturally striking barn conversion with mezzanine lounge and vaulted ceilings Multiple reception rooms providing flexibility Versatile living spaces with potential for cinema room, teenage retreat, or sixth bedroom Three distinct gardens plus parking and possible development potential (STPP) Location Situated near the heart of St John’s village, the property offers convenient access to local shops, schools, and amenities—making it a superb choice for families seeking space, comfort, and a touch of countryside charm. Description Spacious 7-Bedroom Residence with Character and Contemporary Flair This impressive detached property offers a rare combination of timeless charm and modern living. At its heart lies a stunning kitchen housed within a beautifully converted barn, complete with a mezzanine lounge and soaring vaulted ceilings—an architectural centrepiece that sets the tone for the rest of the home. The estate comprises a generous 5-bedroom principal house and a separate 2-bedroom cottage, ideal for extended family or rental potential. Multiple reception areas—including a formal dining room, study, games room/gym, granite wine cellar, and a cosy lounge—provide versatile spaces for both entertaining and everyday living. Upstairs, a flexible top-floor room adjacent to the attic bedroom offers endless possibilities, from a cinema room to a teenage retreat. The main house comprises of five spacious double bedrooms, including a luxurious primary suite with a walk-in wardrobe and elegant en-suite. Two additional bathrooms serve the remaining bedrooms, and a first-floor dressing room could easily be converted into a sixth bedroom. The attic…
Combined from 2 agents' own descriptions of this property — see "Also listed by" below for each agent's original wording.
- bathrooms: 4 (Savills Jersey) vs. 3 (Fine & Country 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
- PubSt. John Inn0.87 mi · 19 min walk · 3 min drive
- RestaurantL'Auberge du Nord1.2 mi · 26 min walk · 4 min drive
- CaféSt John's Village Cafe0.93 mi · 20 min walk · 3 min drive
- SupermarketCo-operative Grand Marché3.2 mi · 69 min walk · 10 min drive
- AirportJersey Airport4.0 mi · 13 min drive
- Petrol stationSt John Fill up & Drive0.84 mi · 18 min walk · 3 min drive
- GP surgeryDental Practice & Island Medical Centre0.93 mi · 20 min walk · 3 min drive
- DentistBracken Barrett4.9 mi · 105 min walk · 16 min drive
- SchoolSt John's Primary School0.80 mi · 17 min walk · 3 min drive
- Hospital / medical centreUnnamed hospital3.1 mi · 66 min walk · 10 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 John. Adjust build quality or size for this property
Value added is the extra floor area priced at £7,241/m² — the midpoint asking price per m² among 14 St John 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 |
£101,370 | £70,000 14 m² · mid spec new build range £56,000–£84,000 |
+£31,370 | 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 |
£144,814 | £60,000 20 m² · mid spec refurb range £40,000–£80,000 |
+£84,814 | 86% (84) |
| Two-storey extension Roughly 14 m² on each of two floors. ~28 m² |
£202,740 | £140,000 28 m² · mid spec new build range £112,000–£168,000 |
+£62,740 | 83% (193) |
| Garage, annexe or outbuilding Detached space is worth less per m² than main-house floor area. ~18 m² |
£78,200 | £90,000 18 m² · mid spec new build range £72,000–£108,000 |
−£11,800 | 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 32 recorded sales on La Rue de la Mare Ballam
Planning history
| Application | Description | Status |
|---|---|---|
| P/2026/11152 | Convert existing outbuildings to garage, home gym and interior design studio. Alterations to existing vehicular access & construct boundary … | Approved Full record |
| P/2025/10093 | Alter to elevation and change of use of indoor swimming pool into 1No. 2 bed flat ancillary to existing dwelling. Extend hard landscaping to… | 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/2026/11152 — Garage / outbuilding / annexe
£31,250–£56,250Convert existing outbuildings to garage, home gym and interior design studio. Alterations to existing vehicular access &… - P/2025/10093 — Garage / outbuilding / annexe
£31,250–£56,250Alter to elevation and change of use of indoor swimming pool into 1No. 2 bed flat ancillary to existing dwelling. Extend…
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 John, 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.
