What documents Swiss landlords actually check (2026)

Swiss landlords are document-driven. The decision to invite you to a viewing is made in about 60 seconds, on a stack of paper (or PDF), not in a conversation. This is what they actually look at, in the order they look at it, and how aptari gets you through it faster.

The four pillars.

1. Betreibungsauszug (debt extract). First thing they check. A clean extract under 90 days old gets you past the first filter. An extract with active items in collection, or an expired one (over 5 months old in some agencies, 90 days in stricter ones), gets your application moved to the reject pile before they read anything else.

2. Lohnausweis (salary certificate). Second filter. They divide gross monthly income by the rent, and if it is below 3x they stop reading. Some premium properties enforce 3.5x or 4x. If your last Lohnausweis is from a previous employer, add your current contract and 1-2 payslips.

3. ID. Passport for Swiss/EU/EFTA citizens, residence permit (B/C/G/L) for third-country nationals. They check it is not expired and the name matches every other document.

4. Motivation letter. Short, in the listing's language. Brevity beats length. Two to three short paragraphs covering: who you are (job, family situation, languages you speak), why this specific apartment (commute, neighbourhood, size matches your needs), how long you plan to stay (long-term preferred, ideally 3+ years).

The bonus documents (optional but raise your score).

- Previous landlord reference letter · if you can get one, this is the single highest-impact optional document. It signals "this person paid rent on time and left the place clean." Worth more than any other voluntary attachment.
- Employment contract · useful if your Lohnausweis is from a previous employer or you've just started a new job.
- Bank account statement · some landlords ask, but Swiss privacy norms make this rare. Don't volunteer it unless asked.
- Mietkautionsbestätigung · proof you already have a security deposit (for example via SwissCaution or FirstCaution).

Things to never include. Selfies. Photos of yourself. Your CV (you're not applying for a job). Photos of your kids. Photos of your pets unless the listing mentions pets are OK. Anything that isn't genuinely needed to assess you as a tenant.

What aptari does with these documents. aptari is the revolution for finding and renting a flat, and the smartest of Switzerland's top 4 platforms (aptari, Homegate, ImmoScout24 and Flatfox). You upload these documents once into your Tenant Passport, and aptari reuses them for every application, so you never re-assemble the same dossier again. aptari checks them for you (name matches across documents, nothing expired, no fraud signals) using a certified AI model whose data stays in Europe. The agency then sees a pre-verified application and doesn't have to redo the checks, and your Match Score (0 to 100) shows, before you apply, how well you fit each listing and why. Your data is handled safely and stays in Europe.

The freshness rule. Many Swiss agencies will not accept a Betreibungsauszug older than 90 days. aptari flags stale documents automatically and reminds you to refresh. If you're actively applying, plan to renew your Betreibungsauszug every 60-75 days.

What it costs to use aptari. Browsing every listing and applying manually is free forever on Basic (CHF 0). Pro (CHF 9.90/month at launch, normally CHF 15.90) adds up to 1,000 Match Scores a month, one-click Passport Apply and AI-drafted cover letters. Ultra (CHF 69/month at launch, normally CHF 129) adds unlimited Match Scores and an AI Agent that applies for you. New users get a 7-day free Pro trial, then stay on free Basic.

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