Basse-Allaine groups Courtemaîche, Buix and Montignez on the lower Allaine, right up against the French border. Most of the housing is old, largely farmhouses and village homes.
Basse-Allaine prices below the Jura median, at CHF 2,900 per m². For a buyer that widens what one budget covers, often by a room or by a plot. For a seller it means the surrounding communes set the ceiling. Sitting under the Jura median gives a buyer room, though the discount is rarely free. It usually pays for distance from a station, from the lake, or from a school catchment that people compete over.
Position 40 of 49 in Jura puts Basse-Allaine 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. Houses carry a premium of 7 percent per square metre over flats in Basse-Allaine, CHF 3,100 against CHF 2,900. Households buying a house here are mostly trading up from a flat nearby, so demand holds even when volumes drop.
Up 3.9 percent in a year, Basse-Allaine 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. Basse-Allaine comes out 19 percent from the Porrentruy median, measured against communes competing for the same buyers rather than against a whole canton with several markets in it. The largest band in Basse-Allaine is before 1919, at 28 percent of homes. Buildings of that age were rarely insulated when built, so running costs and the cost of the works belong in the price you offer, not in a list for later.
The average home in Basse-Allaine has 4.5 rooms for 117 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 2,900 per m² is the working reference for a flat in Basse-Allaine, 29 percent from Jura. 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 5,400 to CHF 8,700 per square metre in 25 years, +61 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 Basse-Allaine 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. Before you settle on a price in Basse-Allaine, 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 →The median flat in Basse-Allaine is priced at CHF 2,900 per m². That puts the commune 29 percent from the Jura 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.
Houses in Basse-Allaine are valued around CHF 3,100 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 Basse-Allaine is before 1919, which covers 28 percent of homes. Average size runs to 4.5 rooms, so the commune is built mainly for households rather than for single occupants or short stays.