In the Chablais plain between Saint-Maurice and Monthey, Massongex keeps the traces of its Roman past by the Rhône.
Massongex tracks Valais closely, at CHF 5,800 per m² for a flat. Communes in this band are the easiest to value: enough sales to anchor a price, and no local anomaly pulling the figures around. The premium over Valais 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. Position 24 of 67 in Valais puts Massongex among communes with similar price levels and often very different housing stock. Two communes can share a rank and still value the same flat differently once age and condition are taken in.
At CHF 6,100 per m² houses outprice flats in Massongex by 5 percent. The difference is the plot rather than the build: a house sells with land attached, and where there is little left to build on, the land does the pricing. Up 3.3 percent in a year, Massongex 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.
Against the Saint-Maurice district the gap comes to 14 percent. This is the comparison that carries weight for an estimate: communes in one district share a labour market, a transport network and the same pool of buyers. after 2015 accounts for 18 percent of homes in Massongex, ahead of the other periods without dominating them. A mixed stock widens the price range inside one commune: two flats of the same size can be a third apart on condition alone.
The average home in Massongex has 3.7 rooms for 100 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. The median flat in Massongex comes out at CHF 5,800 per m², a gap of 5 percent against the Valais median. That figure covers every flat sold, whatever the floor, the age of the building or the state of the kitchen. From CHF 3,800 to CHF 8,200 per square metre in 25 years, +116 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.
Transaction volume in Massongex is high enough that one unusual sale does not distort the medians. That matters, because thin markets are where automated estimates go furthest wrong and where a local opinion earns its keep. If you are weighing a sale in Massongex, 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 →CHF 5,800 per m² is the current median for flats in Massongex. It covers every sale, new and old, so a renovated flat sits above that line and one still needing works sits below it.
Count on roughly CHF 6,100 per m² for a house in Massongex. 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.
The dominant band in Massongex is after 2015, which covers 18 percent of homes. Average size runs to 3.7 rooms, so the commune is built mainly for households rather than for single occupants or short stays.