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Boulder, CO Rent Increase Laws 2026

Colorado has no rent cap but Landlords must give 21 days' notice before raising rent. Wrong notice = void increase.

In Colorado, there is no statewide rent cap. Landlords must provide 21-day written notice before any increase takes effect. An increase without proper notice is void.

Key Takeaways — Boulder Rent Increase Laws

  • Notice required: 21 days before increase
  • Wrong notice: Entire increase is void

Rent Increase Laws in Boulder

Boulder landlords must follow Colorado state law on rent increase laws. Understanding the specific rules, deadlines, and penalties can prevent costly violations.

21 days

notice required

Penalty Warning

Violate Colorado rent increase laws rules in Boulder and you could have your increase voided. At Boulder's median rent of $2,124/month, even a single violation adds up fast.

Don’t risk it. Let LeaseBase handle the compliance.

LeaseBase automatically calculates your maximum increase, generates compliant notices, and tracks delivery deadlines — so you never miss a deadline.

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Rent Increase Laws in Nearby Cities

Own properties in multiple cities? Rules may differ locally:

Louisville, CO
Pop. 20,390
Lafayette, CO
Pop. 30,439
Erie, CO
Pop. 35,269
Jamestown, CO
Pop. 245
Broomfield, CO
Pop. 76,860

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How we researched this page: Rent increase laws rules are based on Colorado state statutes. Rent data comes from HUD Fair Market Rents (FY2026) for Boulder County. Last updated: August 2026.
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Reviewed by Rachid Abadli

Founder & CEO, LeaseBase · Sacramento landlord · Self-managing since 2019

LeaseBase is a property management platform — not a law firm. Consult an attorney for legal advice specific to your situation.