Arson in the First Degree (C.R.S. § 18-4-102) in Colorado

A first-degree arson charge in Colorado is one of the most serious property crimes you can face. The penalties are severe. The stigma is lasting. And prosecutors treat these cases aggressively because fire endangers lives.

If you’ve been arrested for or charged with arson in the first degree, you need to understand what the law actually says, what the state needs to prove, and what defense strategies can protect your future.

Don’t wait for the prosecution to build an airtight case against you. Contact Dawson Law Office now for a free, confidential consultation and start fighting back today.

What is First-Degree Arson Under C.R.S. § 18-4-102?

Under Colorado Revised Statute § 18-4-102, a person commits first-degree arson when they knowingly set fire to, burn, cause to be burned, or use an explosive to damage or destroy a building or occupied structure belonging to another person without that person’s consent.

Let’s break that down into plain English.

First-degree arson has three critical components:

• Knowingly — You must have been aware that your conduct would set fire to or damage the property. An accidental fire doesn’t meet this standard.
• Building or occupied structure of another — The property must belong to someone else. Burning your own property falls under different statutes.
• Without consent — The property owner did not give permission for the fire or explosion.

The word “knowingly” is important. Under Colorado’s criminal code, you act “knowingly” when you are aware that your conduct is practically certain to cause the result. It doesn’t require specific intent to cause harm to a person. It requires awareness that your actions would damage or destroy the structure.

What Counts as a “Building” or “Occupied Structure”?

Colorado law draws a critical distinction between a “building” and an “occupied structure,” and this distinction directly affects how severely you’ll be charged.

A building is any structure designed to provide shelter for people, animals, or property. It doesn’t need to have someone inside at the time of the fire. Examples include houses, apartments, commercial buildings, barns, garages, and warehouses.

An occupied structure is any structure that is actually occupied by a person or animal at the time of the offense, and the defendant knew it was occupied. This includes homes where people are sleeping, stores with employees inside, or vehicles with passengers.

The difference matters because it determines whether you’re facing a class 3 felony or a class 4 felony.

Penalties for First-Degree Arson in Colorado

First-degree arson carries some of the harshest penalties in Colorado’s criminal code.

Arson of an Occupied Structure — Class 3 Felony

If the arson involved an occupied structure, the charge is a class 3 felony. Penalties include:

• 4 to 12 years in the Colorado Department of Corrections
• 5 years of mandatory parole
• A minimum fine of $3,000, with potential fines reaching up to $750,000
• Mandatory restitution to the victim(s)

Arson of a Building — Class 4 Felony

If the arson involved an unoccupied building, it’s classified as a class 4 felony. Penalties include:

• 2 to 6 years in prison
• 3 years of mandatory parole
• A minimum fine of $2,000, with potential fines reaching up to $500,000
• Mandatory restitution

Sentence Enhancement: Use of Explosives

If first-degree arson is committed using an explosive and causes serious bodily injury, the offense becomes a crime of violence under C.R.S. § 18-1.3-406. This sentence enhancement can result in:

• 10 to 32 years in prison
• Mandatory consecutive sentencing if other violent offenses are charged alongside

Collateral Consequences

A felony arson conviction doesn’t just mean prison time. It can permanently alter your life:

• Loss of the right to own firearms
• Difficulty finding employment with a felony record
• Loss of professional licenses
• Immigration consequences, including deportation for non-citizens
• Restricted housing options
• Damaged personal and professional reputation

What the Prosecution Must Prove

The state carries the burden of proof. To convict you of first-degree arson, the prosecutor must prove every element of the offense beyond a reasonable doubt:

1. You set fire to, burned, or used an explosive to damage or destroy the property.
2. The property was a building or occupied structure.
3. The property belonged to another person — meaning someone other than you had a possessory or proprietary interest.
4. You acted without the owner’s consent.
5. You acted knowingly — you were aware that your conduct was practically certain to cause the fire or explosion.

If the prosecution can’t prove even one of these elements, they can’t convict you.

Defense Strategies for First-Degree Arson

At Dawson Law Office, we’ve seen how arson investigations can go wrong. Fires are chaotic events, and the evidence is often circumstantial, inconclusive, or flawed. Here are some of the defense strategies we may pursue on your behalf.

Lack of Knowledge or Intent

Remember, first-degree arson requires that you acted “knowingly.” If the fire was accidental, the result of negligence, or caused by a mechanical failure, you didn’t commit arson. Prosecutors must prove you knew your actions would cause the fire. If they can’t, the charge falls apart.

Faulty Fire Investigation

Arson investigations rely heavily on fire science, but that science isn’t always reliable. The National Fire Protection Association (NFPA) has updated its guidelines significantly over the years, and investigators who rely on outdated methods can reach incorrect conclusions.

Your defense team can hire independent fire experts to challenge the prosecution’s findings, point out errors in the investigation methodology, and offer alternative explanations for how the fire started.

Consent of the Owner

First-degree arson requires that the fire was set without the owner’s consent. If you had permission to burn the structure — such as a controlled agricultural burn or demolition — this is a complete defense.

The Property Was Your Own

C.R.S. § 18-4-102 applies to property belonging to “another.” If you set fire to your own property, this specific statute may not apply. However, other arson charges (such as third-degree arson for insurance fraud or fourth-degree arson for endangering others) could still be brought.

Mistaken Identity or Alibi

In many arson cases, there’s no direct witness to the fire being set. Circumstantial evidence and suspicion drive the investigation. If you can establish that you weren’t present when the fire was started, an alibi defense can be powerful.

Insufficient Evidence

If the prosecution’s case rests on weak forensic evidence, unreliable witnesses, or speculation, your attorney can challenge the sufficiency of their proof. The burden is always on the state to prove guilt beyond a reasonable doubt.

How First-Degree Arson Differs from Other Arson Charges

Colorado’s criminal code recognizes four degrees of arson. Understanding where your charge falls is crucial.

First-Degree Arson (C.R.S. § 18-4-102) targets the knowing destruction of another person’s building or occupied structure. It carries the most severe penalties.

Second-Degree Arson (C.R.S. § 18-4-103) applies to knowingly damaging or destroying another person’s property that is not a building or occupied structure — such as vehicles, fences, or crops.

Third-Degree Arson (C.R.S. § 18-4-104) involves using fire or explosives to intentionally damage property with the intent to defraud, typically for insurance fraud purposes.

Fourth-Degree Arson (C.R.S. § 18-4-105) covers knowingly or recklessly starting a fire that places another person in danger of death or serious bodily injury, or that endangers another person’s building or occupied structure.

Sometimes prosecutors overcharge. What should be a second-degree or fourth-degree arson charge gets filed as first-degree. An experienced defense attorney will scrutinize the charges and push back when the facts don’t support the severity of what’s been filed.

What to Do If You’ve Been Arrested

An arrest for first-degree arson is frightening. But what you do in the hours and days after your arrest can make or break your defense.

Exercise your right to remain silent. Don’t try to explain what happened to the police. Even innocent statements can be twisted and used against you.

Don’t consent to searches. If the police ask to search your home, vehicle, or phone without a warrant, you have the right to refuse.

Hire a criminal defense attorney immediately. Arson investigations are complex. The sooner your attorney can get involved, the sooner they can begin reviewing the evidence, hiring experts, and building your defense.

Document everything you can remember. Write down where you were, who you were with, and what you were doing at the time of the alleged offense. Share this information only with your attorney.

Why Dawson Law Office Should Be Your First Call

Arson cases are complex. They involve forensic evidence, expert testimony, and aggressive prosecution. You need a defense team that’s prepared to match that intensity.

At Dawson Law Office, we bring years of criminal defense experience to every case. We know how to challenge flawed fire investigations, expose weaknesses in the prosecution’s evidence, and fight for the best possible outcome.

Whether that means a dismissal, reduced charges, or a not-guilty verdict at trial, we’ll pursue every available avenue to protect your freedom and your future.

Contact us today for a free consultation. Time is not on your side — act now.