key4 for investors: attractive returns |

Invest in mortgages

Are you looking for an attractive risk-return profile? Invest in Swiss mortgages – we will be happy to help you.

The advantages of key4

Online access to mortgages

You obtain access to mortgage financings for investment properties and self-occupied properties throughout Switzerland.

Flexibility and freedom of choice

You, as the investor, decide which loans to grant and which interest rates to offer for which terms.

A strong partner at your side

We are your single point of contact for the assessment, brokerage and take care of the entire administration.

One platform, different investment opportunities

Through our mortgage platform, you can invest in mortgages for both investment properties and self-occupied real estate properties.

Investment properties

Investment properties

Self-occupied real estate properties

Self-occupied real estate properties

Which properties are suitable for investment?


Investment properties

Self-occupied real estate properties

Type of property

Completed multi-family units and properties for commercial use

Self-occupied real estate properties in Switzerland (incl. luxury, rented and vacation properties)


One pledged object per request (incl. total pledge)

One pledged object per request

Financing structure

Fixed-rate mortgage or fixed-rate mortgage combined with a SARON Flex mortgage

Possibility to have a maximum of three mortgage tranches from different providers

Loan amount

From CHF 1 000 000

From CHF 100 000


2–20 years, can be combined with a SARON Flex mortgage

1–15 years and SARON mortgages


What clients say about us

Similar level of risk, significantly better returns

Thomas Inderwildi

Head of Asset Management at the Swiss Post Pension Fund

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