Less paperwork
Identity, documented housing reputation and the question of the rent - bundled in one place instead of scattered across four attachments.
AI-generated
For landlords and property managers
Review one application. Not eighty.
Sumia is a club for tenants. Members disclose their circumstances once - to us. What they show you is a verified profile: identity, previous tenancies, and confirmation that the rent is comfortably affordable. No income figure, no bank statement.
The profile is designed so that this decision is all it takes: You can review—and you don't have to commit your time until after the viewing—the documents of the one person you really want to do business with.
What a verified profile means for you
Less effort, clarity sooner - and the decision stays yours.
Clarity sooner
A qualitative confirmation, not a score. You read that the intended rent is comfortably affordable - not what someone earns.
Your decision stays yours
Sumia does not broker, recommends no one and sells no data. Reviewing the documents and choosing the tenant remain with you.
Data-minimal
You'll see the confirmation, not a stack of documents. Access is personal, temporary, and can be revoked at any time. No attachments, no copies, no files in your inbox.
Sample profile
Digital, verified, at a glance.
The applicant hands you a digital card with the essentials. The personal link opens the full profile - released to you, for a limited time, revocable at any moment. No paper, no attachments, no copies.
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
Dependable in conflict, too
Conversation first.
Sumia members commit to seeking conversation first when they disagree and, where things get stuck, to bringing in a mediator. For you that means a path before escalation and a tenancy both sides can carry. It commits you to nothing.
A word from the founder
I'm a landlord myself.
I know the other side of this process: the stack of applications, the same documents over and over, and the uncomfortable feeling of deciding about people you essentially know nothing about. What you really want to know as a landlord is simpler than the usual forms suggest - is the rent affordable, will the apartment be looked after, and if there is a dispute, can we talk. Everything else you only ask because you have nothing better.
Sumia offers this better solution. For landlords quick clarity, and for tenants, the chance to be verified without disclosing his information. Both sides gain the same thing from this—trust in the process.
Prof. Dr. Andreas Mix
Founder
AI-generated
How to accept Sumia profiles
Sumia is accepted here.
Sumia is a club for tenants - we build it from their point of view. But a profile is only worth something if it is accepted. So here is our question to you: is what it says enough for you to invite someone to a viewing?
If yes, sign up. We will get in touch, and you will receive a few ready-made text blocks as well as the “Sumia is accepted here” badge - for your listings, your website, your door.
If no, write to us anyway. What stands in the way is the first thing we need to know.
- No cost
- No signature
- Can be ended at any time
No costThe profile comes in addition to the usual documents, never in their place, and grants no preferential treatment.
Request the acceptance kit
Text blocks for your listing and your replies, a one-page PDF, a link to embed.
Frequently asked questions
Brief answers to what comes up most often in practice. Anything missing here we are happy to clarify personally - hello@sumia.ai.
A credit report gives you a value - a number. A Sumia profile gives you the opposite: no score, no ranking, but a housing reputation that confirms instead of rating. You do not read how an applicant “performs”, but that identity, previous tenancies and the question of whether the intended rent is comfortably affordable are documented - bundled in one place instead of scattered across four attachments. The binding review of the documents remains yours.
No. Sumia does not filter based on income level, but rather on whether the desired rent is affordable—as measured by the rent the member chooses, not by an income threshold. Anyone looking for a modest apartment qualifies with a modest income. Membership also includes a commitment: to treat the apartment with care and to seek dialogue first in the event of a conflict. And this commitment applies not just at the beginning—anyone who breaks it loses their membership, and with it, their profile. For you, this means: And this commitment applies not just at the beginning—anyone who breaks it loses their membership—and with it, their profile. An active profile means: an active membership.
You see the confirmation, not the stack of documents: verified identity, documented housing reputation and the finding that the rent is comfortably affordable. Figures such as income stay out of it - you read that the rent is affordable, not what someone earns. Access to the full profile is personal, time-limited and revocable at any moment; the applicant grants it to you.
Even if this is your first time seeing Sumia, you’ll find exactly what you would have asked for anyway: a verified identity, documented places of residence, and confirmation that the rent is affordable—all complete, organized, and from a named source, rather than scattered across four attachments. This saves you work, regardless of whether the name is already familiar to you.
If a profile does not match the person, or a member does not keep their commitments, write to us: hello@sumia.ai. We follow up on every report. What follows from it is governed by the membership procedure - not the individual tenancy: Sumia does not rate members and does not decide conflicts.
Request the acceptance kit
We will send the kit straight to you. No contract, no cost, no obligation.
Looking for an apartment yourself? → Request admission.