Lease Agreements

Can a landlord charge additional pet fees after move-in?

Colorado rental guidance and tenant-landlord operational information.
Published February 4, 2026 State-specific rental guidance Update This Question
Reviewed & Updated by Tenants & Landlords

This rental guidance is reviewed for clarity, relevance, and state-specific information and may be updated as rental requirements change.

Asked 213 days ago · Colorado

Can a Landlord Charge Additional Pet Fees After Move-In in Colorado?

Renting a home or apartment in Colorado involves understanding your rights and responsibilities as a tenant, as well as those of your landlord. One common question among tenants pertains to pet fees and whether landlords can impose additional charges related to pets after the lease term has begun. This guide aims to clarify Colorado-specific rules regarding pet fees after move-in and help tenants navigate lease agreements confidently.

Understanding Pet Fees in Colorado Rental Agreements

In Colorado, pet fees are typically additional costs charged by landlords to cover potential damages or increased maintenance associated with allowing pets on the rental property. These fees can take several forms:

  • Pet deposits: Refundable amounts held against pet-related damages.
  • Pet rent: Recurring monthly charges for having a pet on the premises.
  • One-time pet fees: Non-refundable charges for permitting pets.
Whether and how these fees can be charged depends largely on terms outlined in the lease agreement and relevant state laws.

Can a Landlord Charge Additional Pet Fees After Move-In?

Lease Agreement Terms Are Key

The primary consideration is whether the lease agreement addresses pet fees comprehensively and whether it allows for additional fees after move-in.

  • If the lease agreement explicitly states all pet-related fees upfront and includes no provisions for additional pet fees:
Generally, the landlord cannot impose extra pet fees after the tenant has moved in unless the tenant agrees to an amended lease.
  • If the lease agreement allows for additional fees or adjustments:
The landlord may be able to charge more fees according to the lease terms.

Colorado Law on Modifying Lease Terms After Move-In

Under Colorado’s landlord-tenant laws, a landlord cannot unilaterally change the terms of the lease (including rent or fees) after the lease has been executed and the tenant has moved in, except as allowed by the lease itself or by mutual agreement.

  • Any increase in fees or rent requires proper notice and typically the tenant’s consent if the lease is fixed-term.
  • For month-to-month tenancies, landlords must provide advance written notice of changes—generally at least 21 days before the change takes effect.
This means if your lease does not allow additional pet fees after move-in, the landlord cannot impose new pet fees mid-lease without your agreement.

When Can Additional Pet Fees Be Charged?

There are certain scenarios where additional pet-related fees could be legitimately introduced:

  • Adding a pet after move-in:
If a tenant did not have a pet initially but later decides to get one and notifies the landlord, it is reasonable for the landlord to charge pet fees at that point.
  • Lease renewal negotiations:
When renewing the lease, landlords and tenants can negotiate new terms, including adjustments to pet fees.
  • Violation of pet rules:
If a tenant violates pet policies (e.g., multiple unauthorized pets, not cleaning up after pets), the landlord may impose penalties as specified in the lease.

What Should Tenants Do?

Review Your Lease Carefully

  • Check the pet clause and any fee schedules.
  • Confirm if there are provisions about changes to pet fees.

Communicate in Writing

  • If the landlord proposes new fees after move-in, request written documentation and justification.
  • Negotiate any additional fees before agreeing.

Understand Your Rights

  • You have the right to quiet enjoyment of your rental without unexpected fee increases.
  • Familiarize yourself with Colorado’s landlord-tenant laws, including notice requirements for fee or rent changes.

Seek Assistance if Needed

If you believe your landlord is improperly charging additional pet fees after move-in, consider contacting:

  • Colorado Division of Housing: For tenant resources and education.
  • Tenant advocacy groups: For assistance with disputes.
  • Legal aid services: If you require legal advice or representation.

Summary

In Colorado, landlords generally cannot charge additional pet fees after move-in unless:

  • The lease agreement allows it,
  • The tenant consents to a lease modification,
  • The tenancy is month-to-month with proper written notice,
  • Or a pet is added for the first time after the lease begins.
Always review your lease, communicate clearly with your landlord, and understand your rights under Colorado law to avoid unexpected pet fee charges during your tenancy.

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