key4 – investment property financing |

A mortgage for your investment property

Are you looking for financing for your property? That’s lucky. Because at key4, you will receive several attractive offers with just one request.

Interested in sustainable financing?

Our indicative interest rates*

These interest rates are for illustrative purposes only and are updated regularly (last update: 27.03.2023). They do not constitute a binding financing offer.

key4 calculated the interest rates shown based on the following financing parameters:
Property: apartment building in a central location (e.g., BE, BS, GE, ZH); Loan amount: CHF 1 to 10 million; Affordability: up to 100%; Loan-to-value ratio: 45% to 55%; Mortgage payout date: 26.04.2023.

key4 connects institutional investors and borrowers for investment properties. An individual, binding financing offer is the result of a bidding process on key4, during which the investors check the loan request individually. The result of the bidding process cannot be predicted. The indicative interest rates shown are estimations from key4 on the basis of previous loans with the financing parameters shown. Additional parameters may be taken into account when checking your financing inquiry. Please contact key4 to discuss your concrete inquiry.

What clients say about us

Quality at excellent conditions

Thomas Graf
Owner and Managing Director of Graf AG General-/Totalunternehmung

High level of transparency, first-class interest rates

Béatrice Schaeppi
Managing Director and General Partner of Schaeppi Grundstücke Verwaltungen KG

Clear structure, simple comparison

Bruno Gerber
Financial Officer of Baugenossenschaft Berna

What you can expect from key4

Always at your side

We assess and broker requests and take care of the entire administration.

Several offers

With one request you will receive several attractive offers.

Transparent costs

There are no hidden costs. You only pay fees if you take out a mortgage.

How can I find attractive mortgages?

How can I find attractive mortgages?

Is your investment property suitable for key4?



Type of property

Completed multi-family units and properties for commercial use


One pledged object per request (incl. total pledge)

Financing structure

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

Loan amount

From CHF 1 000 000


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

Would you like to invest in mortgages?

We bring mortgage holders and investors together and take care of the administration. Invest in investment properties or in owner-occupied residential property.

Popular articles on this topic

Straight to a non-binding interest rate indication

This could also interest you

Interest rate forecast for companies

UBS Swiss Real Estate Bubble Index

We use cookies to make sure you get the best experience on our website. For further information please consult the Privacy Statement. You are free to change your cookies’ settings in the privacy settings. Go to privacy settings