Choosing the wrong tenant is the single most expensive mistake a private landlord can make. Eviction proceedings in Germany take 12 to 18 months, lost rent during disputes is rarely recoverable, and a tenant with poor payment behaviour can cost €15,000 or more before they leave. Yet the legal rules for vetting applicants are surprisingly tight: ask the wrong question and you risk a discrimination claim. Skip a check and you live with the consequences for years.
This guide covers what you can legally ask, what you cannot, how to use Schufa correctly, and how the new 2026 three-phase data collection model from German data protection authorities changes when you can request which information.
The Mieterselbstauskunft: your central vetting tool
The Mieterselbstauskunft is a self-disclosure form completed by the prospective tenant. It is the central document in the German rental application process. Standardised templates are available from Haus & Grund, Mieterbund, and major portals like ImmoScout24.
Key legal facts:
- It is voluntary. No statute forces an applicant to fill it out. In practice, refusal almost always means rejection, but the landlord cannot compel completion.
- Tenants must answer legally permitted questions truthfully. Lying about an admissible question (income, employment, prior eviction, insolvency) gives the landlord the right to rescind the contract for fraudulent misrepresentation (§ 123 BGB) or terminate it without notice (§ 543 BGB).
- Tenants have a “right to lie” about inadmissible questions. False answers to forbidden questions cannot be used to terminate the lease.
The 2026 three-phase data collection rule
In March 2026, the German Datenschutzkonferenz (DSK) issued an updated Orientierungshilfe that fundamentally changes when you can collect which data. The three phases are now binding orientation for all data protection authorities:
Phase 1: At the viewing (Besichtigung)
You may collect only:
- Full name
- Contact data (phone, email)
- Possibly the number of people moving in
You may NOT yet ask for: income, employer, Schufa, ID copy. This is a significant restriction. Many landlord templates still violate this rule.
Phase 2: Concrete intent / pre-contractual phase
Once the applicant has signalled serious interest and you are seriously considering them, you may collect:
- Income (Nettoeinkommen)
- Employer and employment type
- Schufa-BonitätsCheck
- Insolvency declaration
- Pets, intended use
Phase 3: Just before contract signing
Only at this final stage may you request:
- Mietschuldenfreiheitsbescheinigung (certificate of no rent debts)
- Last 3 payslips (Gehaltsabrechnungen)
- Employer confirmation
- Identity verification by visual inspection
This staged approach is meant to enforce data minimisation under Art. 5(1)(c) DSGVO. Collecting Phase 3 data at Phase 1 is now a documented data protection violation.
Questions you may legally ask
A question is permitted only when the landlord has a legitimate interest (Art. 6(1)(f) DSGVO). The following are accepted:
| Topic | Permitted? | Phase |
|---|---|---|
| Full name and contact details | Yes | 1 |
| Number of adults and children moving in | Yes | 1-2 |
| Profession and employer (general) | Yes | 2 |
| Net monthly income | Yes | 2 |
| Current/prior insolvency (last 5 years) | Yes | 2 |
| Open eviction orders (Räumungstitel) | Yes | 2 |
| Outstanding rent debts to former landlords | Yes | 2 |
| Pets (yes/no, type) | Yes | 2 |
| Intended use (residential vs. commercial) | Yes | 2 |
| Smoker status | Debated, depends on context | 2 |
Questions you may NOT ask
These violate the AGG, DSGVO data minimisation, or general personality rights (Art. 2(1) GG):
- Family planning, pregnancy, intent to have children
- Marital status or relationship status
- Sexual orientation
- Religion or worldview (narrow exception for church-affiliated landlords)
- Ethnicity, nationality, residence status, “Hautfarbe”
- Political party or trade union membership
- Hobbies, leisure activities, music preferences
- Specific medical conditions or disabilities (unless directly relevant)
- Criminal record (very narrow exception for financial offences with rental relevance)
- Membership in associations
The right to lie: Tenants who give false answers to any of these questions face zero legal consequences. You cannot terminate the contract or rescind it for fraudulent misrepresentation if the question itself was unlawful.
The Schufa-BonitätsCheck
The Schufa-BonitätsCheck für Mieter is a certificate developed specifically for the rental market, distributed via Schufa and partner platforms like ImmoScout24.
How it works
- The tenant orders it themselves and pays approximately €29.95
- The certificate they hand over contains rental-relevant negative entries only, not the full Schufa report
- Validity: typically 90 days
- Landlords cannot directly query Schufa about an applicant. Schufa only releases data on the basis of the data subject’s own request.
What changed in 2024 and 2026
April 2024: Following the EuGH ruling on Schufa scoring (Case C-634/21, December 2023), Schufa abolished the numeric score for the Wohnungswirtschaft. The rental BonitätsCheck now provides a yes/no-style assessment of negative payment items rather than a percentage score.
EuGH consequence for landlords: A Schufa result may be one element of your decision but cannot be the sole basis for rejection. Automated scoring as the deciding factor violates Art. 22 DSGVO.
March 2026: Schufa migrated from the 0-100% score to a new 100-999 scale for the consumer/credit market. The rental BonitätsCheck remains score-free.
BGH 18.12.2025 (I ZR 97/25): Resolved (paid-off) negative Schufa entries do not have to be deleted immediately. Storage for up to 3 years remains permissible following case-by-case interest balancing. Negative items therefore continue to appear on tenant BonitätsAuskunft for longer than tenants often expect.
Difference from the free Schufa-Datenkopie
The Datenkopie nach Art. 15 DSGVO is free, but it is intended for the data subject only and contains substantially more information than a landlord may legally receive. The BonitätsCheck is the appropriate product for handing over to a landlord.
Other proof documents
Mietschuldenfreiheitsbescheinigung
A confirmation from the previous landlord that no rent debts are outstanding. Per BGH 30.09.2009 (VIII ZR 238/08), the previous landlord is not legally obliged to issue one, because such a binding statement could prejudice their ability to claim later utility back-payments. Tenants instead have a right to Quittungen under § 368 BGB.
The document remains widely requested but cannot be enforced. Treat its absence as a data point, not a deal-breaker.
Income proof
| Employment type | Acceptable proof |
|---|---|
| Employed (Angestellt) | Last 3 Gehaltsabrechnungen, or Arbeitgeberbescheinigung |
| Self-employed | Last 2-3 Einkommensteuerbescheide (gold standard), BWA, Steuerberater letter |
| Pensioner | Rentenbescheid |
| Student | Bürgschaft from parents (see below) |
Personalausweis (ID document)
This is one of the most commonly mishandled topics. Per § 20(2) PAuswG, an ID copy may be made only with the holder’s consent, and must be permanently and clearly marked as a copy.
Data protection authorities consider full ID copies generally inadmissible under DSGVO data minimisation. Best practice:
- Perform an Einsichtnahme (visual inspection) at the viewing
- Record only the fact that identity was verified
- If a copy is taken, the tenant may redact all data not needed for identification: serial number, “Zugangsnummer” (CAN), and the machine-readable zone
Discrimination law: AGG and what it means in practice
§ 19 AGG prohibits discrimination based on race, ethnic origin, gender, religion, disability, age, or sexual identity in mass civil-law transactions.
When AGG applies to landlords
For housing rentals, the law is restricted:
- Landlords renting fewer than 50 apartments in total are subject only to the race and ethnic origin protections (§ 19(5) sentence 3 AGG)
- The Act does not apply if landlord or relatives live on the same property
- Differential treatment is permitted to maintain “sozial stabile Bewohnerstrukturen” — a much-debated escape clause
- Discriminatory advertising language (“Nur an Deutsche”, “Keine Ausländer”) is always unlawful regardless of landlord size
Burden of proof
Per § 22 AGG, the affected person must show indications (Indizien) suggesting discrimination. The landlord must then refute them. Testing (parallel applications under different names) is accepted as evidence in court.
Recent damages awarded
| Court | Award | Context |
|---|---|---|
| AG Charlottenburg | ~€3,000 | Ethnic discrimination in selection |
| AG Hamburg | ~€1,000 | Documented discrimination |
| Various (BGH-confirmed) | 1-3 monthly rents | Standard range |
Time limit: Claims for damages must be raised within 2 months of the rejection (§ 21(5) AGG).
DSGVO compliance for tenant data
Legal basis
- Selected applicant: Art. 6(1)(b) DSGVO (pre-contractual measures)
- Rejected applicants: Art. 6(1)(f) DSGVO (legitimate interest, e.g., defending against AGG claims)
Storage and deletion
| Status | Retention period |
|---|---|
| Rejected applicants | Generally 3 months (covers the 2-month AGG window plus buffer) |
| Pending claims or disputes | Up to 3 years if justified |
| Successful tenants | Duration of tenancy + statutory retention (typically 6 months after final Nebenkostenabrechnung; 6-10 years for tax-relevant records) |
Right of access
Both rejected and current tenants may request a Datenkopie under Art. 15 DSGVO of all data the landlord holds about them. You must respond within one month.
Practical vetting strategy
Income verification rules
Two common rules for assessing affordability:
- 30%-Regel: Warmmiete should not exceed 30% of net income
- 3x Kaltmiete-Regel: Net monthly income at least 3x the cold rent
Most landlords use the stricter 3x Kaltmiete rule for rental decisions.
Verification calls
Calls to the previous landlord and current employer are permissible only with the applicant’s explicit written consent. Add a checkbox to the Selbstauskunft for this purpose.
Common red flags
- Refusal to disclose previous landlord
- Refusal to permit Schufa-BonitätsCheck
- Inconsistencies between Selbstauskunft answers and submitted proofs
- Recent insolvency or open Räumungstitel
- Vague or evasive answers about employment or income
- Pressure to skip standard checks (“I need to move in fast”)
The Bürgschaft option
When income alone is insufficient (typical case: students, trainees, freelancers in their first year), an Elternbürgschaft or third-party Mietbürgschaft is the standard fallback.
Requirements landlords typically set:
- Surety earns at least 3x the monthly rent
- Surety has no negative Schufa entries
- Conclude as selbstschuldnerische Bürgschaft (§ 773 BGB), allowing direct recourse without first suing the tenant
A personal Bürgschaft is in addition to the cash deposit cap (max. 3 Kaltmieten under § 551 BGB) and is not subject to that cap, but excessive cumulative security may be challenged in court.
A compliant Selbstauskunft template structure
A well-designed form should contain:
- Header / data protection notice: controller, purpose, legal basis (Art. 6 DSGVO), retention period, applicant’s Art. 15 rights
- Personal data (Phase 1): full name, date of birth, current address, contact details, ID document type recorded after Einsichtnahme
- Household composition (Phase 2): number of adults and children moving in
- Employment and income (Phase 2): current employer, position, employment type (permanent/temporary/probation), net monthly income
- Financial history (Phase 2): declaration regarding insolvency proceedings and absence of open Räumungstitel
- Pets (Phase 2): yes/no, type
- Intended use: purely residential vs. partial commercial
- Required attachments at Phase 3: Schufa-BonitätsCheck, last 3 payslips or Steuerbescheide, optionally Mietschuldenfreiheitsbescheinigung
- Signature, date, explicit DSGVO consent for any processing beyond the legal basis (e.g., contacting previous landlord)
What should NOT appear: religion, marital status, hobbies, family planning, ethnicity, political affiliation. If your template has any of these fields, replace it.
Key takeaways
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The Mieterselbstauskunft is voluntary, but truthful answers to permitted questions are legally binding. Lying about income, employment, or insolvency lets you terminate or rescind the contract.
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Tenants have a right to lie about forbidden questions. False answers to questions about religion, family planning, or ethnicity cannot be used against them.
-
The 2026 DSK three-phase rule restricts what you can collect at each stage. Income and Schufa belong to Phase 2 (concrete interest), not the viewing.
-
Schufa-BonitätsCheck is now score-free for the rental market (since April 2024). It cannot be the sole basis for rejection (EuGH ruling). It is one element among several.
-
The Mietschuldenfreiheitsbescheinigung cannot be enforced from the previous landlord (BGH 2009). Treat its absence as a soft signal, not a hard fail.
-
Full ID copies are generally inadmissible. Use Einsichtnahme. If a copy is necessary, allow tenant redaction of serial number and CAN.
-
AGG protections apply differently for small landlords: those with fewer than 50 units are subject only to race and ethnic origin protections, but discriminatory advertising is always unlawful.
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Reject documents must be deleted within ~3 months. Keep applicant data only as long as legally justified.
The right vetting process protects you legally and improves tenant quality. Combined with proper financial planning (see our rental yield calculator) and a solid understanding of hidden ownership costs, thorough tenant selection is the single highest-leverage investment you can make in any rental property.