To terminate a tenancy, you should use form JDF 99b, Notice to Terminate Tenancy. However, with recent changes to Colorado eviction laws, this form does not specifically address tenancies at will. (Colorado law does not automatically presume a tenancy is at will.) As a result, many landlords opt for longer notice periods than assuming three-days notice will suffice.

Aa tenancy may be terminated by notice in writing, served not less than the respective period fixed before the end of the applicable tenancy, as follows:

• A tenancy for one year or longer, ninety-one days;

• A tenancy of six months or longer but less than a year, twenty-eight days;

• A tenancy of one month or longer but less than six months, twenty-one days;

• A tenancy of one week or longer but less than one month, or a tenancy at will, three days;

• A tenancy for less than one week, one day.

Colorado Revised Statute 13-40-107

Unfortunately Colorado has made evictions far more complicated than in previous years. For more information, read our article "Legally Evict Your Adult Child in Colorado." If you need help, contact our attorneys in our evictions practice for assistance. You can contact us here.