On the hillsides above Nyon, Trélex combines a La Côte village with a direct link to the lakeside.
At CHF 9,700 per m², Trélex sits near the middle of the Vaud scale. Which side of that median your own flat lands on depends more on floor, view and condition than on the address itself. The premium over Vaud has a practical effect at resale. Buyers arriving from cheaper communes negotiate hard on condition, because they are already stretched on the price per square metre before they walk in. Trélex ranks 55 out of 132 communes in Vaud 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.
Houses carry a premium of 18 percent per square metre over flats in Trélex, CHF 11,400 against CHF 9,700. Households buying a house here are mostly trading up from a flat nearby, so demand holds even when volumes drop. Up 1.9 percent in a year, Trélex 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.
The district test is the harder one. Trélex comes out 8 percent from the Nyon median, measured against communes competing for the same buyers rather than against a whole canton with several markets in it. No single period defines Trélex, though 1971-1980 leads with 20 percent. That mix works in a buyer's favour, since you can choose between period character and low running costs without leaving the commune.
The average home in Trélex has 4.7 rooms for 151 m². That ratio describes the shape of local demand better than the price does: many small rooms point to family housing, fewer and larger ones to conversions and new build. CHF 9,700 per m² is the working reference for a flat in Trélex, 5 percent from Vaud. Take it as a starting point: in a commune this size, the spread between the cheapest and the dearest street is often wider than the gap to the canton. From CHF 3,900 to CHF 9,500 per square metre in 25 years, +144 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.
Trélex turns over enough stock to give a reliable read. The practical benefit shows at negotiation, where both sides can point to comparable sales from the same year, which shortens the distance between asking price and signature. If you are weighing a sale in Trélex, the useful question is not the commune price but yours. A few minutes and a handful of characteristics are enough to place your property inside the local range.
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 the price levels of your commune and the profile of your property.
Value my property →The median flat in Trélex is priced at CHF 9,700 per m². That puts the commune 5 percent from the Vaud median, a gap explained in part by the age of the local stock and in part by how little land is left to build on.
Count on roughly CHF 11,400 per m² for a house in Trélex. That rate applies to habitable surface, which leaves out the garage, the cellar and any unconverted attic, all of which add value but never at the same rate.
20 percent of homes in Trélex date from 1971-1980. That age band sets the technical agenda for a buyer here, since insulation, heating system and windows are what decide running costs for the next twenty years.