Why this comparison tool exists, and who it's for.
Casaris is built from two Latin roots: casa — "house" or "home" — and comparare, "to compare." Put together, the name says exactly what this site is for: comparing a home, on your own terms, with real figures.
This is an independent, self-built set of comparison tools for residential property in and around Zürich, organized around three pillars — three different questions you might be asking about the very same property:
Before spending money on a bank or an independent financial advisor, it's useful to get a fast, transparent answer: at today's rates and today's rents, does buying a specific apartment — either to rent out or to live in — actually make financial sense, and how does it compare to the alternative? These tools answer that in seconds, with the underlying maths fully visible (see the Methodology page) rather than hidden inside a bank's own comparison tool.
Anyone considering a purchase in the tracked Zürich-area postcodes — whether to let it out or to live in it themselves — who wants a quick, numbers-first gut-check before commissioning real advice.
Property listings across Canton Zürich, as well as Swiss lender rates are screened automatically, every night, with no human research step involved. A lightweight automated nightly process keeps this website in sync with both underlying datasets — it does not perform new research on its own. See Methodology for full detail and current limitations.
Questions, corrections, or takedown requests: see the Contact page. See also the Impressum and Privacy Policy.