Tenant Screening

Can landlords require co-signers for rental approval?

Delaware rental guidance and tenant-landlord operational information.
Published May 8, 2026 State-specific rental guidance Update This Question
Reviewed by Tenants & Landlords Editorial Team

This rental guidance was reviewed by the Tenants & Landlords Intelligence Team, specializing in lease agreements, notices, rent disputes, deposits, evictions, and tenant-landlord operational procedures.

Asked 26 days ago · Delaware

Tenant Screening in Delaware: Can Landlords Require Co-Signers for Rental Approval?

When managing rental properties in Delaware, landlords often look for ways to mitigate financial risk and ensure reliable tenancy. One common method is requiring a co-signer or guarantor to secure the lease. Understanding whether Delaware landlords can mandate co-signers and the legal considerations surrounding this practice is essential for effective and compliant tenant screening.

Can Delaware Landlords Require Co-Signers?

Yes, landlords in Delaware can require a co-signer as part of the rental approval process. A co-signer, also referred to as a guarantor, typically agrees to be financially responsible for the lease if the primary tenant fails to meet their obligations. This requirement is particularly common when the tenant has:

  • Insufficient or poor credit history
  • Low or unstable income relative to rent
  • Limited rental history
  • Other risk factors such as a history of eviction or recent employment changes
Requiring a co-signer provides landlords with an additional layer of security beyond the tenant’s own qualifications.

Important Considerations When Requiring Co-Signers

1. Consistent Application of Screening Criteria

Delaware landlords must apply tenant screening requirements uniformly to avoid discrimination claims. This means:

  • Applying the co-signer requirement consistently to all applicants who meet specific risk criteria
  • Avoiding arbitrary or selective enforcement of the co-signer stipulation
  • Documenting the screening process and reasons for requiring or waiving a co-signer based on objective standards

2. Written Agreement with the Co-Signer

Co-signers in Delaware must enter into a legally binding written agreement. The lease or a separate guaranty agreement should clearly outline:

  • The co-signer’s responsibilities and liabilities
  • The duration of the guaranty (e.g., whether it lasts the entire lease term or month-to-month)
  • The extent to which the co-signer will be liable (commonly for unpaid rent, damages, or other lease breaches)
This helps protect the landlord’s interests and provides clarity to all parties involved.

3. Screening the Co-Signer

Just as the tenant is screened, the co-signer should also undergo verification, including:

  • Credit reports to assess financial reliability
  • Income verification to ensure ability to cover the tenant’s obligations
  • Background checks to reduce risk
While Delaware law doesn’t mandate landlord screening policies, prudent property managers treat co-signers as responsible parties who must demonstrate financial capability.

Delaware Fair Housing and Anti-Discrimination Compliance

Landlords must ensure that requiring a co-signer complies with Delaware’s fair housing laws and the federal Fair Housing Act. Key points include:

  • No Discrimination Based on Protected Classes: The requirement must not discriminate against applicants because of race, color, national origin, sex, disability, familial status, religion, or other protected characteristics.
  • Reasonable Accommodation Requests: If a tenant with a disability requests an accommodation related to the co-signer requirement, landlords should engage in an interactive process before denying such a request.
By maintaining consistent, non-discriminatory practices, Delaware landlords reduce legal risks associated with tenant screening.

Practical Tips for Delaware Landlords Using Co-Signers

  • Define Risk Criteria: Clearly establish when a co-signer is required (e.g., credit score below a threshold, income below three times the rent).
  • Use a Standard Guaranty Agreement: Employ a comprehensive legal document that specifies the scope of the guarantor’s obligations.
  • Verify All Parties Thoroughly: Screen both tenants and co-signers using reliable methods.
  • Document Every Step: Keep a detailed record of the screening process and decisions.
  • Communicate Clearly: Explain the co-signer requirement upfront to prevent misunderstandings during the application process.

Conclusion

In Delaware, landlords are permitted to require co-signers to secure rental approval, particularly when tenants do not meet standard screening criteria. Such requirements must be applied consistently and fairly to avoid discrimination issues and should be documented through a written guaranty agreement. Properly screening co-signers is essential to minimizing financial risk while protecting the landlord’s interests. By following best practices and adhering to Delaware’s legal framework, landlords can effectively use co-signers as a safeguard in their tenant screening process.

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