The arithmetic
Lost rent per day = monthly rent divided by 30. Lost rent for a gap = that figure times the number of empty days.
The table uses median asking rents from the aptari feed of 9 November 2026 as examples. An asking rent is the rent shown in the listing. These are not official statistics, and your flat will have its own figure.
| Example rent (median asking rent, all sizes) | Per day | 2 weeks empty | 1 month empty |
|---|---|---|---|
| Geneva, CHF 3,050 | about CHF 102 | about CHF 1,423 | CHF 3,050 |
| Zurich, CHF 2,550 | CHF 85 | CHF 1,190 | CHF 2,550 |
| Bern, CHF 1,924 | about CHF 64 | about CHF 898 | CHF 1,924 |
| Switzerland, CHF 1,860 | CHF 62 | CHF 868 | CHF 1,860 |
| Basel, CHF 1,755 | CHF 58.50 | CHF 819 | CHF 1,755 |
Add what the rent does not show: ancillary costs for the empty flat, a second round of advertising, and the hours your team spends on viewings and e-mails.
Where the days go
The official vacancy rate is low: 0.93% in Switzerland and 0.11% in the city of Zurich on 1 June 2026 (BFS). In such a market a flat rarely stands empty for lack of interest. The days are lost in the process:
- Late listing. The advert goes online weeks after notice was given.
- Slow first look. Applications wait in an inbox until someone has time.
- Viewings spread over many dates. Each extra date adds days.
- A late decision. The preferred applicant has signed elsewhere, and the round starts again.
What shortens the time
- List earlier. Publish as soon as notice is in, with the move-in date and viewing date already in the text.
- Look faster. Set a fixed moment each day for new applications, and decide on a shortlist within a few days.
- View online. One live online viewing for everyone, then on-site appointments for the shortlist.
What aptari does for this
- A sorted shortlist in place of an inbox. Every applicant is rated by the same rules with the facts shown, and documents are read once at upload. The first look starts with a sorted list.
- Live Tours. Show the flat in the browser to many people at once. Growth includes 20 a month, Enterprise 50.
- Briefing Agent (Enterprise). A morning summary of new applications per listing.
aptari never decides and never declines automatically. A person at your agency does. aptari makes no promise about days saved.