Buyers coming from Texas, Illinois, or the Northeast often brace for a big property tax bill on a Colorado mountain home. The pleasant surprise is that Colorado has some of the lowest property taxes in the country, and a second home is taxed the same as any other residence. For many out-of-state buyers, the annual tax on a Colorado property is a fraction of what they pay back home. Here is what you will actually owe, and how it works.
I help buyers understand the full cost of ownership, not just the purchase price, and property tax is one line where Colorado genuinely works in your favor.
Colorado's property tax is among the lowest in the nation, and there is no second-home surcharge. For buyers from high-tax states, that is a real and recurring saving.
What you will actually pay
The headline number surprises people. Colorado's effective property tax rate is among the lowest of any state, often in the neighborhood of a third to a half of one percent of a home's value.
In concrete terms, Summit County's own figures put the total property tax on a $1 million home at roughly $3,500 a year, which works out to about 0.35 percent of value. Scale that up and a $3 million mountain home typically lands somewhere in the low-to-mid five figures annually. That is dramatically less than a similarly valued home would carry in many other states, where effective rates of 1.5 to 2 percent or more are common. On a $3 million home, that difference can be tens of thousands of dollars every year.
How the tax is calculated
Colorado property tax comes down to three numbers.
First, your home's actual value, set by the county assessor. Second, the residential assessment rate, which for 2025 through 2027 runs around 6.25 percent for the local government portion and about 7.05 percent for the school district portion. Third, the mill levy, the local tax rate that varies by where the property sits within the county. Actual value times the assessment rate gives your assessed value, and the mill levy is applied to that. Because the assessment rate is low by design, even a high-value home produces a modest tax bill relative to its price.
Second homes are taxed the same, for now
This is the part out-of-state buyers most want to confirm: Colorado currently taxes second homes, vacation homes, and short-term rentals at the same residential rate as a primary residence. There is no second-home penalty built into the assessment.
The one break you do not receive is the senior homestead exemption, which requires the property to be your primary residence. But the underlying rate is identical, so a vacation home and a full-time home of the same value owe roughly the same tax. When you are running the full cost of owning a mountain home, property tax is one of the smaller and more predictable pieces.
What to watch
Low does not mean frozen. Two things are worth keeping an eye on.
Reassessments matter. When mountain values climbed sharply in recent cycles, tax bills rose with them even though rates stayed low, simply because the actual value went up. The state has since passed relief measures, and this back-and-forth between rising values and legislative relief is likely to continue.
And policy can shift. There have been periodic proposals to treat short-term rentals or second homes differently for tax purposes. None of that currently changes the residential rate, but if you are buying as a rental, it is a reason to stay aware of the local rules, which I cover alongside zoning in the best Colorado ski town for rental income. For anything specific to your situation, confirm with a Colorado tax professional.
Colorado second-home property taxes, answered
How much are property taxes on a second home in Colorado? Less than most buyers expect. Colorado's effective property tax is among the lowest in the country, often around a third to a half of one percent of a home's value. In Summit County, a $1 million home runs roughly $3,500 a year in total property tax. On a $3 million mountain home, you are typically looking at somewhere in the low-to-mid five figures annually, far less than the same-value home would cost in many other states.
Are second homes taxed differently in Colorado? Currently, no. Colorado taxes second homes, vacation homes, and short-term rentals at the same residential assessment rate as a primary residence. There is no second-home surcharge on the assessment. The main tax break you do not get is the senior homestead exemption, which requires the property to be your primary residence, but the base rate is the same.
How is Colorado property tax calculated? Three numbers: your home's actual value, the residential assessment rate, and the local mill levy. Actual value times the assessment rate gives the assessed value, and the mill levy is applied to that. For 2025 through 2027, residential assessment rates run around 6.25 percent for local government and 7.05 percent for the school district portion, and mill levies vary by location within the county.
Are Colorado property taxes high? No. Colorado consistently ranks among the states with the lowest effective property tax rates. For a second-home buyer coming from a high-tax state like Texas, Illinois, or parts of the Northeast, the difference is substantial. A mountain home here often carries a fraction of the annual property tax that a similarly priced home would in those markets.
Could property taxes on second homes go up? They can move, and it is worth watching. Assessments rose sharply in recent cycles as values climbed, which pushed bills up even at low rates, and the state has passed relief measures in response. There have also been periodic proposals to tax short-term rentals or second homes differently. As of now none of that changes the residential rate, but reassessments and future legislation are the things to keep an eye on.
Running the numbers on a purchase?
If you are weighing a Colorado mountain home and want a clear picture of the true annual cost, property tax included, I can walk you through what a specific property would actually run. Start with a confidential consultation.