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“Sex Offender Sentencing” in Colorado – How It Works

In Colorado, most felonies have a penalty range with a minimum and maximum number of years in prison. With certain sex offenses, however, the court imposes “indeterminate sentencing,” which means your maximum sentence is life in prison. Indeterminate sentencing became law with the passage of the Colorado Sex Offender Lifetime Supervision Act of 1998. Its purpose is to keep you in custody for as long as the state believes you remain a threat. Then, even if you respond to treatment and get released on parole or probation, you could still be subject to lifetime supervision. In this article, our Denver Colorado criminal defense lawyers discuss the following topics:

1. What is a sex offender?

A “sex offender” is a Colorado defendant convicted of a sex offense. It does not matter whether the conviction is by entering a plea of guilty (or no contest) or by being found guilty at trial.1
Prison inmate clasping onto cell bars in despair
Indeterminate sentencing carries a potential life sentence.

2. Sex Offender Crimes

You will be considered a sex offender in Colorado if you are convicted of any of the following crimes:

3. Indeterminate Sentencing

If you are convicted of a sex offense in Colorado, you face a maximum term of life in prison called “indeterminate sentencing.” Your minimum term depends on the “presumptive range” of the class of crime you were convicted of. The following table shows the minimum prison sentences for Colorado sex crimes where the maximum term is life in prison.
Colorado Sex Offense Minimum Sentence (in general)
Most felonies The presumptive minimum range for the particular felony: Probation may be possible.
Crimes of violence The midpoint in the presumptive range for the particular felony: Probation is not possible.
Crimes that trigger “habitual sex offender against children” status At least three times the upper limit of the presumptive range for the particular felony: Probation is not possible.
Sexual penetration when you knew you had HIV, and HIV was transmitted At least the upper limit of the presumptive range for the particular felony: Probation is not possible.
Rape of a child under 12 years old, and you were at least 18 years old and at least 10 years older than the child Probation is not possible.
In addition to incarceration, you will likely have to undergo treatment based on evaluations and recommendations by the: Note that if you are convicted of more than one crime arising out of the same incident, you must serve the sentences consecutively (one after the other).3

4. Parole

Once you complete your minimum required incarceration for a Colorado sex offense, you will be considered for parole release. The parole board will decide whether you have made sufficient progress in treatment and do not pose a community threat. If you are released, the length of your parole depends on the class of your sex offense, as this table shows:
Colorado Sex Offense Parole Length
Class 4 felony 10 years to life
Class 3 felony 20 years to life
Class 2 felony 20 years to life
The primary condition of parole is participating in an intensive supervision parole program for sex offenders, discussed below in section 6.
After you complete the minimum required parole period, the Parole Board will determine whether to release you. If they do not, they will reassess every three years thereafter.4
Group of intensive supervision participants sitting in a circle during a counseling session
Intensive supervision requires several conditions you have to abide by.

5. Probation

For some Colorado sex offenses, you may be granted probation instead of prison depending on your psychiatric evaluation, the pre-sentence report the probation department prepares for the judge, and other considerations. The length of probation depends on the class of crime you were convicted of, as the following table shows:
Colorado Sex Offense Probation Length
Class 4 felony 10 years to life
Class 3 felony 20 years to life
Class 2 felony 20 years to life
One of the terms of your probation will be to participate in an intensive supervision program, discussed in the next section. In some cases, you first will be sentenced to a residential community corrections program, after which you would be placed in intensive supervision.
After you complete the minimum required probation period, the court will determine whether to release you from probation. If it does not, it will reassess every three years thereafter.5

6. Intensive Supervision

Intensive supervision is required if you are released on parole or probation for a sex offense in Colorado. Typical terms include:
  • severely restricted activities,
  • electronic monitoring,
  • daily contact between you and the community parole or probation officer,
  • monitored curfew,
  • home visitation,
  • employment visitation and monitoring,
  • drug and alcohol screening,
  • treatment referrals and monitoring (including psychological monitoring), and
  • payment of victim restitution.
Your level of supervision can be reduced if you show improvement, but it can also be increased again if you regress.

Intensive Supervision for Other Crimes

Intensive supervision may be required if you are released on parole for any of the crimes listed below. If you are on probation for any of the below-listed crimes, intensive supervision is required.
Intensive supervision is also required if you are on probation for either:
  • Unlawful sexual conduct by a peace officer (CRS 18-3-405.7),
  • Any felony offense that involves unlawful sexual behavior, or
  • Sexual assault in the third degree, in violation of CRS 18-3-404 (2), as it existed prior to July 1, 2000.6

7. Sex Offender Registration

Sex offender registration is a requirement if you are convicted of any Colorado crime considered “unlawful sexual behavior.” This includes more crimes than the sex offenses discussed earlier in this article. The following table shows how long you must register before you can petition for removal.

Colorado Sex Crime

When You May Petition to Get Off the Sex Registry

Sexually violent predators (SVPs); or Felony sexual assault or incest; or At least two convictions of unlawful sexual behavior Never
Other class 1, 2, and 3 felonies After 20 years
Other class 4, 5, and 6 felonies; or Class 1 misdemeanor sexual assault or sexual contact After 10 years
Other misdemeanors After 5 years
Failure to register After 1 year (in addition to the required years for the underlying sex crime)
Deferred sentence and adjudication; or You were a juvenile After dismissal of the case
Failing to register as a sex offender is a separate crime in Colorado. In addition to carrying incarceration and fines, it can also cause your parole or probation to be revoked.7

Additional Resources

For more information about Colorado sentencing laws, refer to the following:

Legal References

  1. C.R.S. 18-1.3-1003. See also C.R.S. 18-1.3-1001 (“The general assembly hereby finds that the majority of persons who commit sex offenses, if incarcerated or supervised without treatment, will continue to present a danger to the public when released from incarceration and supervision. The general assembly also finds that keeping all sex offenders in lifetime incarceration imposes an unacceptably high cost in both state dollars and loss of human potential. The general assembly further finds that some sex offenders respond well to treatment and can function as safe, responsible, and contributing members of society, so long as they receive treatment and supervision. The general assembly therefore declares that a program under which sex offenders may receive treatment and supervision for the rest of their lives, if necessary, is necessary for the safety, health, and welfare of the state.”). See also People v. Dulac (Colo.App. 2024) 548 P.3d 1159; Moore v. 4th Jud. DA (Colo.App. 2024) 553 P.3d 900.
  2. C.R.S. 18-1.3-1003.
  3. C.R.S. 18-1.3.1004.
  4. C.R.S. 18-1.3-1005. C.R.S. § 18-1.3-1006.
  5. See note 3. C.R.S. 18-1.3-1007. C.R.S. 18-1.3.1008.
  6. See notes 4 and 5.
  7. CRS 18-3-412.5. CRS 16-22-103 – 113.

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