What the regime actually restricts
The Federal Act on the Acquisition of Real Estate by Persons Abroad — universally known as Lex Koller — makes the acquisition of certain real estate in Switzerland by persons abroad subject to authorisation. The federal authorities summarise the purpose plainly: to limit foreign acquisition of Swiss soil, principally residential property, while leaving most commercially used premises outside the restriction.
The central concept is the "person abroad". Whether you fall inside it depends on nationality and on your residence and permit status, not on where you happen to bank. In broad terms, EU/EFTA nationals genuinely resident in Switzerland, and third-country nationals holding a settlement permit and resident here, are generally treated differently from non-residents. The definitions are technical and the consequences of getting them wrong are severe, so the classification should be confirmed by a Swiss lawyer before you make an offer.
Principal residence, holiday home, investment
The rules distinguish between categories of acquisition. A dwelling bought as an actual principal residence at the buyer's place of residence is treated differently from a holiday home in a tourist area, which is generally subject to authorisation and to cantonal and federal quota limits, and differently again from purely commercial premises, which are largely outside the Act. Buy-to-let residential investment by persons abroad is the category most often assumed to be available and most often is not.
Where authorisation is required, it is granted — or refused — by the competent cantonal authority applying federal law together with cantonal implementing rules. Some cantons impose additional restrictions of their own. There is no national counter you can visit; the canton in which the property lies determines the process, the quota and the practice.
Eligibility is not the same as affordability
Once eligibility is clear, three distinct questions remain, and conflating them causes most of the difficulty we see.
Financing. Swiss mortgage lending is governed by lender affordability and equity conventions rather than by Lex Koller. Lenders assess the sustainability of the loan against imputed interest costs, maintenance and amortisation, and they apply their own policies to non-resident or foreign-currency borrowers. Whether you may buy tells you nothing about whether a bank will lend.
Tax. Swiss property ownership carries its own consequences, including the imputed rental value regime for owner-occupied property, the deductibility of mortgage interest and certain maintenance costs, wealth tax on the property, and property gains tax on disposal — with rates and rules varying by canton and commune. If you are taxed elsewhere as well, the applicable double-taxation agreement determines how the two systems interact.
Pension funding. Swiss law permits the use of occupational pension assets and pillar 3a for owner-occupied residential property in defined circumstances, either by early withdrawal or by pledging. Each route has different effects on your retirement capital, on death and disability cover, on the tax due at withdrawal, and on repayment obligations if the property is sold. Using pension capital to solve an affordability problem is a pension decision first and a property decision second — see also what changes for your pension when you arrive.
Where non-residents most often go wrong
Three assumptions recur. That a Swiss company or a trust can be used to hold residential property and sidestep the Act — the legislation expressly reaches acquisitions of interests in entities whose real purpose is the acquisition of restricted real estate. That a holiday-home authorisation can later be converted into an investment property — permitted use is generally conditional and monitored. And that a purchase agreed subject to authorisation is effectively done — it is not, and the contractual consequences of refusal must be dealt with in the deed.
A workable sequence
Confirm your status under the Act in writing, in the canton concerned, before committing. Establish whether the intended use is authorised and whether a quota applies. Obtain indicative financing terms from a lender that actually serves your residence and currency profile. Model the Swiss and foreign tax position of holding and eventually selling. Only then decide whether pension assets should be involved at all, and in what form. Because both eligibility and authorisation practice turn on cantonal application of federal law, this is an area for canton-specific legal advice rather than general guidance.
A better next step
Before acting, bring the pension, tax and investment decisions into one cross-border review. Hansa Perpetual can help structure the questions and coordinate the planning process with appropriately qualified tax and legal specialists where required.