Arragon Mooar, Old Castletown Road, Santon, IM4 1HB
Description
With a south facing coastal location in the Isle of Man, the UNESCO Biosphere, Arragon Mooar is a unique building combining classic Palladian architecture with elliptical shapes. Spanning an expansive 23,000sq/ft, this property’s distinctive design and impeccable craftsmanship sets it apart as one of the British Isle’s finest estates. It was conceived by renowned inventor Dr John C. Taylor OBE and crafted to his exacting standards. The property boasts an elliptical central atrium with a galleried first floor connected by a cantilever staircase, glass lift and even a secret staircase. A 360-degree roof terrace, overlooking the parterre garden, orangery, rockery and pond, provides sweeping views of a Neolithic Stone Circle and the Irish Sea to Snowdon in the south. Then, over the ASSI Santon river valley to farmland and heath of the Manx countryside from the Calf Island to hills at North Barrule. The central atrium rises to over 32 feet with a bespoke stone floor that evokes a dahlia flower when viewed from above. Each of the six en-suite bedrooms is uniquely designed, alongside an elliptical drawing room, dining room, library and cosy TV snug. The stylish kitchen/breakfast room is complemented by glass and bottle pantries. The property includes practical features such as an upper floor laundry room, boot/utility room, CAT5 cabling and dedicated cloakrooms for both guests and the owner. Currently laid out as a private suite of three offices, other rooms off the main atrium offer work areas. Arragon Mooar house also has a lower atrium, with a function suite served by a catering kitchen. Plus, a secure three-room exhibition space, (which also could be used as a gym suite), and a photographic studio/cinema. Outside, formal gardens feature a classic English parterre, under wh…
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Climate · Douglas
Station: RONALDSWAY · 12.1 km from the representative point.
Explore monthly temperature and rainfall
Typical daytime temperature
1991–2020 station normals · Average daily high (°C)
Representative-station climate context, not today’s weather or a property-level hazard assessment. Missing monthly values are not estimated.
Read the values and sample counts
| Period or area | Average daily high (°C) |
|---|---|
| Jan | 9 |
| Feb | 8 |
| Mar | 10 |
| Apr | 12 |
| May | 14 |
| Jun | 17 |
| Jul | 18 |
| Aug | 18 |
| Sep | 16 |
| Oct | 14 |
| Nov | 11 |
| Dec | 9 |
Rainfall through the year
1991–2020 station normals · Mean monthly precipitation (mm)
Representative-station climate context, not today’s weather or a property-level hazard assessment. Missing monthly values are not estimated.
Read the values and sample counts
| Period or area | Mean monthly precipitation (mm) |
|---|---|
| Jan | 83 |
| Feb | 66 |
| Mar | 62 |
| Apr | 55 |
| May | 55 |
| Jun | 62 |
| Jul | 59 |
| Aug | 67 |
| Sep | 71 |
| Oct | 102 |
| Nov | 105 |
| Dec | 95 |
What's nearby 646 places
Getting there
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What has actually sold in Castletown
204 recorded sales in Castletown across the life of the register, median £305,000. In the last three years, 204 sales with a median of £305,000 — this one is asking 4818% more.
| Address | Sold | Price paid |
|---|---|---|
| 15 Knock Rushen Castletown | 2026-06-22 | £590,000 |
| 3 Mona Terrace Castletown | 2026-06-19 | £549,950 |
| 4 Stowell Place Castletown | 2026-06-19 | £320,000 |
| Ellan Veen College Green Castletown | 2026-05-28 | £660,000 |
| Elderbank The Crofts Castletown | 2026-05-27 | £1,100,000 |
| Paradise Court Mill Street Castletown | 2026-05-22 | £205,000 |
Sales in the same locality, not the same street or the same kind of house — a register match is by place, not by property. Every recorded sale in Castletown
Within two kilometres
| Property | Distance | Beds | Asking |
|---|---|---|---|
| Apt. 5 Cringle Close, Reayrt Mie, Ballasalla, IM9 2BZ Ballasalla | 1.8 km | 2 | £239,950 |
Straight-line distances from the coordinates each agent published, so treat a walking time as indicative. Look at the site on Google Earth
How this one compares
2 similar properties on the island advertised at within 25% of this price with a similar number of bedrooms. Their median asking price is £14,500,000 — this one is asking 3% more. Asking prices only; nobody has paid these.
| Property | Where | Beds | Asking | vs this one |
|---|---|---|---|---|
| Ballacroak, Mullinaragher Road, St Marks | St Marks | 5 | £14,500,000 | -3% |
| Ballacroak Farm, Mullinaragher Road, St. Mark's, IM9 3AQ | St Mark's | 5 | £14,500,000 | -3% |