Verified identity
Once Sumia verifies who you are—it’s all in your hands. No personal documents passing through third-party mailboxes. Instead, a seal that speaks for you without revealing your identity.
AI-generated
The Club for good tenants.
A curated club for tenants who commit to treating their apartment with care and resolving conflicts through dialogue first. What you’ve built as a tenant is recognized here for the first time: a residential reputation that belongs to you, grows with you, and moves with you.
Hundreds of people are applying for the same apartment. How can you stand out—without revealing too much about yourself?
THE TWO PATHS
Two Ways to Showcase Yourself with the Sumia Business Card
The Business Card - You contribute to
When you apply for a specific apartment, include a business card verified by Sumia with your application instead of personal documents. At first, the card contains only the essentials: the seal, the number of people, your maximum rent, the number of rooms, the neighborhood, and the expiration date. If the landlord invites you for a viewing, share the link on the card - they’ll see your profile in detail but still won’t see any documents. You’ll only submit those when it comes time to sign the lease.
The Reservation - You enter
If you aren't currently looking for an apartment, you can leave your business card with a real estate agent or property management company-without specifying a specific property - for six months, and you can revoke this at any time. If a suitable property becomes available later, they can contact you using the card. You decide whether to make your profile public at that time.
THE OCCASION
What Sumia Is Designed For
New to this city. Alone for the first time. Back after years abroad. A household that has changed.
Sumia is for those who don't yet have a network to advocate for them—or who don't have one here. We don't screen based on income level: Anyone looking for a modest apartment qualifies, even with a modest income.
The Profile
A profile that grows with you.
Not a document you create once and forget. A stable address - curated by Sumia, maintained by you, always growing.
Verified residential history
Something that can't be created overnight—and that's exactly why it matters.
Membership card
MM
Max Mustermann
Hamburg • 4-person household
Confirmed
Committed: in a conflict, talk first
Looking for
Eppendorf · Harvestehude · Eimsbüttel
up to €2,800 incl. utl.
4-5 rooms
4 people
To the profile
or
Member since 2026
Creditworthiness, worn in comfort
Sumia confirms in confidence that your rent is a good fit for you—as a confirmation, never as a figure. The landlord sees that it’s affordable, not how much you earn.
Curated by hand
At Sumia, it’s people who confirm your reputation as a place to live. This creates a community where belonging matters—and one that gains strength with every new member.
The Idea
Sumia takes one side. Yours.
These days, a good apartment attracts hundreds of applications. Anyone who wants to stand out drops pay stubs, bank statements, and copies of ID into strangers’ mailboxes—often before they’ve even seen the apartment. Reliability is rarely a deciding factor. It isn’t listed in any of these documents.
Sumia turns that on its head. Once your financial situation is verified, your profile speaks for you—not your documents. The landlord sees that the rent is affordable; he doesn’t see how much you earn. You decide what else you disclose—and when.
Prof. Dr. Andreas Mix, Founder
Three Promises
What Membership Includes
AI-generated
The Admission
Not a form, but a threshold: a personal conversation, a careful confirmation, a commitment one makes - and keeps.
Sumia is not an anonymous tool. It is a community with standards.
AI-generated
The Mediation
In the event of disagreements, the following principle applies: talk it out first. To this end, Sumia has assembled a network of independent mediators—and for all mediators in this network, the first session is free of charge for Sumia members.
Being a member of Sumia means sharing a common philosophy: We resolve conflicts through dialogue, not through escalation. No rules imposed on us—just the way we live and coexist anyway.
Membership
One fee a year - for the entire household.
Sumia has no monthly commitment, just one fee a year - whether you are searching right now or settled in long ago. Because the profile is not a search function, it is something you own: it gains substance with every year, especially in the years you don't need it. The fee is the same for every member.
The fee is always per household, not per person. A membership covers everyone who lives together—whether there are one, two, four, or eight of you.
One-time
Admission feeIncludes the first 24 months
€199
Annually
Membership feefor the whole household€99
The profile is designed so that this decision is all it takes: You invite them—and you don’t invest your time until after the viewing—to review the documents of the one person you really want to do business with. And if you don’t have any openings right now, members can put their names on your waiting list.
Frequent questions, clear answers
Have a question that isn't answered here? Write to us at hello@sumia.ai and we'll get back to you within one business day.
Anyone who completes the entire process becomes a member: identity verified, ability to comfortably afford the rent they’ve chosen, and the pledge signed. There is no selection based on personal preference, background, or income level—only the process.
No - and that's by design. Sumia is not a housing portal and does not broker listings. We make you visible and credible: your profile goes ahead of you and speaks for you - at every door you approach. You walk the path to the apartment yourself; Sumia makes sure you don't walk it as a stranger.
Yes—that’s exactly what Sumia is designed for. The German system doesn’t take into account what you bring to the table: references from previous landlords abroad, income earned elsewhere, and years of reliable tenancy in another country. Sumia verifies what can be verified. You arrive with a proven track record—instead of starting from scratch.
A one-time registration fee of 199 euros, which covers the first two years — followed by an annual membership fee of 99 euros, valid for the entire household. The fee is the same for all members.
These days, looking for an apartment takes weeks of evenings, dozens of application packets, and your pay stubs sitting in strangers’ mailboxes—and once you move in, all of that is worthless. The next time you move, you start from scratch again. This article puts an end to this never-ending cycle. Your profile remains active long after you’ve moved in. It doesn’t become outdated; it builds substance: You keep it up to date—a new place, another reference, a change in your household situation—and Sumia updates it accordingly. If you’re looking for a place again in five years, you’ll search with five years of documented history instead of a freshly compiled stack of documents. On top of that, there’s support in case of conflict: If a dispute arises regarding your lease, the first consultation with a mediator from our network is always free of charge for you. The fee applies to your household, not per person. A household of four pays once. You can’t buy your way into the program. Membership is granted to those who complete the process—the interview, the verification, and the commitment.
Because a number would defeat the very purpose of Sumia. A score would make members comparable and thus create a ranking where everyone ends up somewhere near the bottom—and it would feign a level of precision that no one possesses, because while it’s possible to prove that someone is a good tenant, it’s impossible to quantify that to two decimal places. That’s why Sumia verifies rather than rates: A member is verified, or they are not a member; your available units are occupied; your desired rent is affordable. Above all, this protects you. The landlord learns that the rent is affordable—not what you earn, not how you compare to others, and not what an algorithm assumes about you.
Ihre Selbstauskünfte und Unterlagen gehören Ihnen - beim Austritt erhalten Sie sie als Export. Die Bestätigungen von Sumia erlöschen: Ihr Profil geht offline, jeder Zugang, jede Freigabe endet. Was bleibt, ist Abwesenheit - kein Vermerk, kein Eintrag, nichts, was gegen Sie spricht.
Request admission
You can become a member anywhere—acceptance starts in Hamburg.
Membership is not tied to a city. Your profile, your confirmed housing history, your data sovereignty - all of it is the same everywhere, in Hamburg as in Munich, in Leipzig as in Cologne. Wherever you live: you begin today, and what you build travels with you.
Only one thing has a specific place: the work toward acceptance. In Hamburg, we’re already talking to landlords and property management companies—this is where the first job openings are emerging that explicitly recognize the profile as part of the application. We’ll bring this work to every other city as soon as there are members there whose profiles reflect it: The members of a city lead the way toward acceptance, not the other way around. Anyone who joins outside of Hamburg today isn’t waiting for Sumia—they are the beginning of Sumia in their own community.
Admission to Sumia is based on an interview, not a form. We conduct a limited number of confirmation interviews each week—the order on the list is the order in which invitations are sent.
Sign up: You'll receive your personal invitation to the confirmation interview.
Signing up is non-binding and free. You become a member only after a personal admission interview - we admit a limited number of new members each week. Privacy Policy.