How Boulder Handles Rental Property Rules: A Practical Guide
Boulder maintains 186 local ordinances across all categories, and 9 of those deal specifically with rental property rules. Here is a breakdown of what the city actually requires, what is prohibited, and where Boulder falls on the strict-to-permissive spectrum compared to other cities.
Just Cause Eviction
Boulder follows state landlord-tenant law for evictions. Landlords must follow proper notice procedures but may not need to state cause for non-renewal of month-to-month tenancies in most cases.
Key details: No-Cause Notice: 30 to 60 days. For Cause: Shorter notice periods. Self-Help: Illegal in all cases. Topic: Just Cause Eviction.
Illegal self-help eviction: tenant damages and penalties. Retaliatory eviction: prohibited, tenant may counterclaim. Improper notice: eviction case dismissed.
Rent Control
Boulder does not have rent control. State law preempts local rent control ordinances, meaning municipalities cannot cap rent increases. Market rates apply to all rental properties.
Key details: Rent Control: Banned by state law. Increases: Market rate, any amount. Notice: 30 to 60 days required. Topic: Rent Control.
Rent increases without proper notice: tenant may challenge. Retaliatory rent increases after complaint: prohibited under state law. Violation of lease terms: standard landlord-tenant remedies.
The rules around rent control in Boulder lean permissive, but that does not mean anything goes.
Rental Registration
Boulder may require landlords to register rental properties with the city and maintain compliance with housing codes. Registration helps ensure rental units meet safety and habitability standards.
Key details: Registration: May be required. Inspections: Periodic compliance. Annual Fee: $25 to $100 per unit. Topic: Rental Registration.
Operating without registration: fines $100 to $1,000 per unit. Failed inspection: correction notice, re-inspection required. Renting uninhabitable unit: penalties up to $5,000 and potential criminal charges.
Source-of-Income Discrimination
Colorado's HB20-1332 prohibits landlords from refusing tenants based on lawful source of income including Section 8 vouchers and Social Security. Boulder enforces these state protections through BRC 12-1 fair-housing rules and rental licensing.
Key details: State law: CRS 24-34-502.2. Local ordinance: BRC 12-1. Covered income: Vouchers, SSI, benefits. License risk: BRC 10-3.
Refusing applicants based on voucher status exposes landlords to civil rights damages, attorney fees, and rental-license sanctions under BRC 10-3 enforcement procedures.
Section 8 Voucher Acceptance
Boulder Housing Partners administers Housing Choice Vouchers (Section 8) for qualifying low-income tenants. Landlords must accept vouchers under CRS 24-34-502.2, and Boulder's inclusionary housing program complements voucher placements citywide.
Key details: Administrator: Boulder Housing Partners. Tenant share: About 30% income. Refusal banned: CRS 24-34-502.2. IZ history: First US, 1973.
Landlords refusing vouchers face fair-housing complaints, civil damages under CRS 24-34-502.2, and potential rental-license sanctions under BRC 10-3.
Boulder is more permissive than most cities when it comes to section 8 voucher acceptance. That said, there are still limits.
Security Deposit Rules
Colorado caps residential security deposits and requires landlords to return them within 30 to 60 days after move-out under CRS 38-12-103. Boulder enforces these state rules locally and adds rental-license accountability to ensure compliance.
Key details: Return window: 30-60 days. State authority: CRS 38-12-103. Wrongful retention: Treble damages. Local cross-reference: BRC 10-3.
Wrongful retention of a deposit exposes landlords to triple damages, attorney fees under CRS 38-12-103, and potential rental-license issues under BRC 10-3 enforcement.
Relocation Assistance
Colorado's Mobile Home Park Act (CRS 38-12-200.1) and city programs require relocation assistance when mobile-home parks close or substantial redevelopment displaces residents. Boulder offers eviction-prevention and relocation funds for qualifying tenants under city programs.
Key details: MHP notice: 12 months. State law: CRS 38-12-200.1. City fund: Eviction prevention. Habitability hook: BRC 10-3.
Failure to provide statutory mobile-home notice or aid exposes park owners to private suits under CRS 38-12-200.1 and may delay redevelopment permits citywide.
Tenant Anti-Harassment
Boulder tenants are protected from landlord harassment under CRS 38-12-510 and the city's habitability and rental-license framework at BRC 10-3. The Right to Counsel pilot adopted in 2023 supports tenants facing pressure to vacate.
Key details: State authority: CRS 38-12-510. Local hook: BRC 10-3. Right to Counsel: Pilot since 2023. Self-help lockouts: Prohibited.
Harassment such as utility shutoffs or self-help lockouts can trigger emergency injunctions, treble damages under CRS 38-12-510, and Boulder rental-license suspension proceedings.
No-Fault Evictions
Colorado's HB23-1171 limited no-fault evictions for tenants who have lived in a home over a year, requiring landlords to cite a statutory cause. Boulder layers in rental-license oversight through BRC 10-3 to deter retaliatory non-renewals.
Key details: State law: CRS 38-12-1303. Tenancy threshold: 12 months. Notice range: 21-90 days. Local enforcement: BRC 10-3.
Improper no-fault notice voids the eviction filing in court, exposes the landlord to tenant damages under CRS 38-12-1303, and may jeopardize Boulder rental-license renewal.
The Bottom Line
Compared to many U.S. cities, Boulder gives residents more room on rental property rules. 2 of the 9 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.
Keep in mind that Boulder can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.