Key location factors for Onex at a glance.
Source: third-party market data · July 2026 · asking rents from listings
Onex is predominantly a single-family housing area: 64 % of residential buildings are single-family homes, 3 % have 2 units.
The median build year 2004 is above the Swiss average (1991). 24 % of buildings date from before 1980.
Heat pumps are recorded in 7 % of updated GWR entries (from 2015).
Rents in the range of CHF 48-58/m²/mo. serve as a reference value for market-rate listings in Onex. Individual listings may vary significantly depending on location, condition, and floor.
Rental prices in Onex are currently typically in the range CHF 48-58 per m² per month (range depending on location, condition and floor). A 70 m² apartment thus comes to roughly CHF 3,400–4,000 per month — the effective market range starts lower for small apartments and rises disproportionately for large ones.
The m² price for owner-occupied apartments in Onex is typically in the range CHF 11'300-12'600 per m². The actual range depends heavily on location, year built, finish standard and views.
The m² price for houses in Onex is typically in the range CHF 11'400-14'700 per m² (defensive range ±12 %). House prices vary considerably depending on plot size, buildability and micro-location within the municipality — a direct m² comparison serves only as an initial orientation.
The effective tax burden in Onex is 20.5 % on income — for a gross income of CHF 150,000 (single, without church tax) this amounts to roughly CHF 30,786 per year. The Swiss median is 19.8 %; the burden in Onex is above. Source: Swiss Federal Tax Administration tax burden statistics 2025.
No — in Onex the share of second homes is 8.9 %, below the 20 % threshold. The second-home law does not apply here, and new second homes are generally permitted. Source: Federal Office for Spatial Development (ARE), 2025.
A first reference point is the local price per square metre: in Onex the median is around CHF 11'968 per m² for condominiums. A realistic estimate also factors in location, year of construction, condition, fit-out quality and view. How the price compares with other municipalities is shown by the Immoskop municipality comparison: all 2’110 municipalities by housing costs, taxes and health insurance premiums — as guidance, not a substitute for an official or bank-verified valuation.
Municipalities nearby, ordered by driving time — purchase price difference to Onex colour-coded.
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