Grengiols is a German-speaking village in the Raron district, upstream from Mörel where the Goms valley begins, with mostly older buildings.
At CHF 3,900 per m² for a flat, Grengiols is one of the cheaper places to buy in Valais. Lower entry prices normally come with a longer commute or an older building, and one of the two usually explains the discount. 53 percent of the housing in Grengiols dates from before 1919. Older stock buys you volume and detail, and hands you the bill for it. Roof, heating and windows come round, and thermal performance is the first thing a valuer marks down.
Average size in Grengiols is 92 m² across 3.4 rooms. Compare your own property with that figure before you read any price per square metre, because an outsized home rarely sells at the local rate and a small one often beats it. Few properties sell in Grengiols each year, so the figures on this page rest on a small sample. Read them as an order of magnitude, since in a thin market two neighbouring sales can land far apart for no visible reason.
Half the flats sold in Grengiols went above CHF 3,900 per m² and half below, which puts the commune 25 percent from the Valais median. One exceptional sale barely moves a median, and that is why we use it instead of an average. Prices below the cantonal level move later and less than the top of the market. In practice a correction in Valais reaches communes like this one with a delay, and so does a recovery. Against the Raron district the gap comes to 17 percent. This is the comparison that carries weight for an estimate, because communes in one district share a labour market, a transport network and the same pool of buyers.
Houses carry a premium of 10 percent per square metre over flats in Grengiols, CHF 4,300 against CHF 3,900. Households buying a house here are mostly trading up from a flat nearby, so demand holds even when volumes drop. Flat prices in Grengiols are up 3.7 percent over twelve months. One year is a short window, so measure it against the longer trajectory before you read it as a change of direction.
The 25-year record opens at CHF 5,000 and closes at CHF 10,000, +100 percent apart. Use it to sanity-check an estimate rather than to project forward, since nothing in the series promises the next decade repeats it. Before you settle on a price in Grengiols, get a number that reflects your own property rather than the commune. It takes a few minutes, and it changes what you are able to defend in a negotiation.
Building stock from the Federal Register of Buildings and Dwellings (FSO), updated October 18, 2026
Market data updated on October 12, 2026
A range set against the price levels of your commune and the profile of your property.
Value my property →Around CHF 3,900 per m² for a flat, which is 25 percent from the Valais median. Houses are priced separately and usually land somewhere else entirely, so work from the figure that matches your property type.
The reference is CHF 4,300 per m² in Grengiols. It averages a small number of sales, since houses change hands far less often than flats, so treat it as a bracket to work inside rather than as a price.
The dominant band in Grengiols is before 1919, which covers 53 percent of homes. Average size runs to 3.4 rooms, so the commune is built mainly for households rather than for single occupants or short stays.