Between Carouge and the foot of the Salève, Troinex marries a historic village with sought-after residential neighbourhoods.
Buying in Troinex means paying more per square metre than almost anywhere in Geneva: CHF 13,200 for a flat. The gap holds even on older stock, so renovation work rarely comes off the asking price the way it does elsewhere. Over 2 years, 182 property sales in Troinex completed and were registered. Half went above a total price of CHF 1,600,000 and half below. Asking prices sit higher, since they still include everything buyers negotiated away.
Paying 12 percent more than the cantonal median buys location, not floor space. The same budget moved to a neighbouring commune would typically add a room, and that is the trade most buyers here have already made. Troinex ranks 14 out of 45 communes in Geneva on flat prices per m². Rankings shift a place or two from one year to the next without anything real changing, so read the band rather than the exact position.
Up 2.7 percent in a year, Troinex has been priced by whoever was willing to pay most for a small number of properties. In a commune with few sales, that is exactly how a median gets moved. Current supply in Troinex stands at 40 properties for sale. Low counts favour sellers and shorten negotiations, high counts do the opposite, and the figure moves enough through the year that you should check it again before listing. The largest group of homes in Troinex, 22 percent, dates from after 2015, with the rest spread across the other bands. Where stock is this varied, a commune price per m² carries less weight and the comparison has to come down to buildings of the same age.
Average size in Troinex is 115 m² across 3.9 rooms. Compare your own property with that figure before you read any price per square metre: an outsized home rarely sells at the local rate, and a small one often beats it. From CHF 3,700 to CHF 9,100 per square metre in 25 years, +146 percent in all. The path was not a straight line, and the flat or falling stretches inside it are precisely what a long average hides.
In Troinex the difference between two flats on the same street can run into six figures. Getting your own number, rather than reading the commune median, is what makes that difference visible before you set a price.
Building stock data: Federal Register of Buildings and Dwellings, FSO, updated August 3, 2026
Market data updated on August 24, 2026
A range set against land registry sales and the profile of your property.
Value my property →CHF 13,200 per m² is the current median for flats in Troinex. It covers every sale, new and old, so a renovated flat sits above that line and one still needing works sits below it.
Houses in Troinex are valued around CHF 13,300 per m² of living space. The plot weighs heavily on that figure, so two houses of identical size can be far apart in price if one has land around it and the other has none.
The dominant band in Troinex is after 2015, which covers 22 percent of homes. Average size runs to 3.9 rooms, so the commune is built mainly for households rather than for single occupants or short stays.