Fair ranking keeps you on the right side of the law and gets you the best tenant. The two goals line up when you score the right things.
Criteria you SHOULD rank on
1. Income coverage
Gross income against the rent · the Swiss 3× rule. Objective and documented.
2. Dossier completeness
Did they provide ID, salary proof, Betreibungsauszug and references? Completeness is a good sign of reliability.
3. Listing fit
Household size against apartment size, pets against the pet policy, smoking against the smoking policy. All relevant to the listing. Permit type is never read.
4. Verifiable trust
A clean Betreibungsauszug and references you can check. Concrete and verifiable.
Criteria you must NEVER rank on
Some of these are protected by criminal law, the others are a matter of fairness and data protection:
- Nationality (beyond the legal right to rent)
- Race or ethnic origin
- Religion
- Family status, marital status, pregnancy
- Age, gender, sexual orientation
- Disability (except where accessibility genuinely matters)
- Political views
What the law says: refusing a flat offered to the public because of race, ethnicity, religion or sexual orientation can be a criminal offence (art. 261bis StGB) and violates personality rights (art. 28 ZGB). For age, gender, family status and nationality Swiss law has no general ban for private landlords, but you may not ask about marital status, religion or nationality as such on the application form (EDÖB leaflet of 15 July 2025). Leaving all of them out keeps you clear of both.
Watch out for hidden stand-ins: a postcode, a name or a first language can quietly stand in for a protected characteristic. A fair system leaves these out too.
The process that holds up
- Objective criteria only, written down before you see applicants
- A person makes the final decision, never the software on its own
- A record of the inputs and the reason for every decision
- A clear explanation available to any applicant who asks
How aptari's Match Score does this
Portals give you an inbox. aptari gives you a ranked shortlist: every applicant scored by the same rules, with the reasons shown. You decide. Match Scores per plan: Starter 5 a month after the trial, Growth 1,000 a month, Enterprise unlimited. The score is a clear set of rules, not a model trained on old, biased decisions. It looks at the four areas above and nothing else. Protected characteristics are never part of it, there are no hidden stand-ins, and every score comes with the reasons behind it. You stay the decision-maker · the score is simply a fair, explainable shortlist.
See discrimination in tenant selection and what you're allowed to ask tenants.