Tessin's platform consists of a technical tool and a digital bulletin board that real estate developers can use to market their business for potential investors.

Those interested in investing in real estate can explore the range of investment opportunities on the Tessin platform. When the investor has found an interesting project, the next step is for them to reserve shares in the project. A reservation is a non-binding interest notification to invest in a specific project. After a reservation has been made, the property developer (usually within one week) distributes more detailed investment material via e-mail to all who have reserved shares. A few days after the investment is distributed, the investor is offered the opportunity to complete their investment by signing an agreement or debenture (depending on whether loans or preference shares are offered) through the digital signature service, Scrive. The agreement is binding when the agreement or debenture is signed with BankID.

Shortly after the investor signs, a payment instruction will be sent indicating where the capital will be transferred and within what time.