The starting point is Lex Koller and buying property in Switzerland. The rules distinguish between categories of foreign buyer, residence status and the intended use of the property. Buying a home does not itself create Swiss residence rights.
That is why the property decision belongs after the residence route and alongside the canton comparison. The home can affect tax, wealth-tax valuation, mortgage affordability and, for qualifying lump-sum taxpayers, the expenditure-based tax calculation.
If you are not ready to buy, renting an apartment in Switzerland covers the practical route into a registrable Swiss address.
Before signing a reservation agreement or purchase commitment in a cross-border case, a Swiss relocation strategy consultation can test the immigration, canton and tax sequence first.