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Secret property - Exceptional house in Cologny

Price on request

30 rooms · 1800 m²

30 room Detached house in Cologny

1223 Cologny(postcode area)

Description

Machine translated

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

Elevator
Pool
Fireplace
Parking
Nice View
Sewage connection

Mentioned in the description

Price

Purchase Price
Price on request
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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
40dB

noise level by day

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

Quieter than 97% of the 3'043 listings in the canton

LibraryRainConversationTrafficLoud

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

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