Price on request
30 room Detached house in Cologny
Price on request
Description
Secret property - Exceptional house in Cologny
Breathtaking view, rare on the market, this large property stands out for its spectacular volumes, its privileged location, and the diversity of possible uses. Developing nearly 2,000 sqm of living space, it offers about 30 rooms that can be adapted to residential, professional, or mixed needs.
Designed to accommodate both a prestigious large family property and a corporate headquarters, family office, foundation, private clinic, or institutional project, this residence lends itself to multiple configurations thanks to its structure, circulations, and vast modular spaces.
The property benefits from a breathtaking and unobstructed view of Lake Geneva, providing a framework for work or living of rare quality, in a secure, private environment, and completely shielded from sight.
A remarkable element completes this ensemble: a garage capable of housing up to 25 vehicles, ideal for enthusiasts and collectors of luxury cars or to meet the logistical requirements of a high-end professional activity.
Combining discretion, security, exceptional volumes, and unique potential for development, this property targets a demanding clientele seeking extraordinary property, capable of adapting to ambitious projects today and tomorrow.
Property Details
- Property type
- Detached house
- Living space
- 1'800 m²
- Plot area
- 6'000 m²
- Rooms
- 30
- Year Built
- 2009
- Published on
- 01.11.2026
Features
Mentioned in the description
Price
- Purchase Price
- Price on request
Location
1223 Cologny
Nearby
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Neighbourhood
Poor public transit
ARE transit class D — a car is needed for most trips.
Mostly built-up
96% built-up area within 500 m.
Quiet neighbourhood
Small and larger households · around 15 people in the neighbourhood.
Municipal tax multiplier
25 %
Lower than 99% of municipalities in the canton
ESTV · 2026
CHF 12'184 income tax a year · Single person without children, gross wage CHF 100'000
- 24.9 Rp/kWh
Noise & quiet40 dBDay
Road and rail noise in the surroundings
Calculated from the federal noise model: the mean over the hectare (100 × 100 m) of the surroundings, model year 2021.
Night
31 dB
Loudest source
Road
Calculated level, placed on a scale of everyday sounds.
Environment
Air within the Swiss limits
At least one pollutant is above its WHO guideline; all meet the Swiss limit.
Radon: class up to 1%
The federal radon map estimates that at most 1% of the buildings here exceed the reference value of 300 Bq/m³.
Connectivity
Fibre in parts of the surroundings only
In at most 10% of the buildings around
5G outdoors
In the network models of 3 operators.
Mobile: as of 2026
Viewing
Alexandra DE DOMECY
