Property Taxes in Denver Metro, Explained by County

The short answer

Property taxes in the Denver metro are calculated by multiplying your home's assessed value by the local mill levy. The tax isn’t based on your home’s sale price, but on a value set by the county assessor every two years. Rates vary widely based on your specific location.

The basic formula works like this:

• Actual Value x Assessment Rate = Assessed Value
• Assessed Value x Mill Levy = Total Property Tax Bill

Your tax bill is a combination of different rates from the county, your city, the local school district, and other special districts. This is why tax bills can differ even between next-door neighbors.

How Colorado Calculates Your Property Tax Bill

Understanding your tax bill is simple if you break it down into two parts: your home's value and the tax rate applied to it.

First, your county's assessor determines your home's "Actual Value." This is their estimate of its market value. This process happens every two years, on odd-numbered years (2023, 2025, 2027, etc.). In May of those years, you'll get a "Notice of Valuation" in the mail. This is not your tax bill. It is simply the county telling you what they think your house is worth.

Second, that Actual Value is multiplied by a statewide "Assessment Rate." This percentage is set by the state legislature and applies to all residential property. For years, it hovered around 7.15%, but recent legislation has it closer to 6.7%. This calculation gives you your "Assessed Value." For a $700,000 home, with a 6.7% rate, the assessed value is $46,900. This is the number that actually gets taxed.

Finally, your Assessed Value is multiplied by the "Mill Levy." This is your local tax rate, and it’s where all the variation happens.

The Mill Levy: Where Your Tax Dollars Actually Go

A mill is one-thousandth of a dollar. One mill is equal to $1 of tax for every $1,000 of assessed value. If your total mill levy is 100 mills, you pay $100 for every $1,000 of your home's assessed value.

Your total mill levy isn't one single rate. It's a stack of smaller rates from every government entity that serves your specific address. Each one gets a piece of your tax payment.

A typical mill levy includes shares for:

• County Government (e.g., Jefferson County)
• City Government (e.g., City of Arvada)
• School District (e.g., Jeffco Public Schools)
• Fire Protection District
• Water & Sanitation District
• Regional Transportation District (RTD)
• Urban Drainage and Flood Control
• Scientific and Cultural Facilities District (SCFD)
• Special Metropolitan Districts

This is why tax rates are so specific to a property. Your home might be in the Cherry Creek School District, while a house a few blocks away is in the Denver Public Schools district. The two districts have different funding needs and therefore different mill levies, resulting in different tax bills.

The Wildcard: Metropolitan Districts

The single biggest reason for sky-high property taxes in certain neighborhoods is the Metropolitan District, or "metro district." These are common in newer developments across the Denver metro, especially in Douglas County, Adams County, and parts of Aurora and Broomfield.

A metro district is a quasi-governmental entity created by a developer to finance the infrastructure for a new community. That means the roads, water and sewer lines, streetlights, and fancy community parks aren't paid for by the developer upfront. Instead, the district issues bonds to pay for them.

Who pays back those bonds? You do. The debt is repaid over 20 to 40 years through a significantly higher mill levy applied only to homeowners within that district's boundaries. It's not uncommon for a metro district to add 30, 50, or even 70 mills to your tax bill. That beautiful new community center isn't a free amenity—it's a mortgage you're paying off through your property taxes.

Denver Metro County Tax Rate Comparison

So what does this look like in practice? While every address is unique, we can see general trends by county. The "Effective Tax Rate" is the most useful number here—it represents the percentage of your home's market value you pay in taxes each year.

The table below shows typical ranges. Your specific bill will vary.

*Effective Rate is an estimate calculated as (Mill Levy / 1000) x 6.7%, based on a typical statewide residential assessment rate. This rate can and does change.

Guidance for Buyers

Your mortgage payment is more than just principal and interest. It’s PITI: Principal, Interest, Taxes, and Insurance. Underestimate the "T" and you are in for a nasty surprise.

First, never trust the tax information on a real estate portal or even the MLS listing. That data is often a year or two old and may reflect a lower valuation. Go directly to the source: the county assessor's website. Search for the property address and find the most recent tax bill and the specific mill levy breakdown.

Second, be extremely careful with new construction. The initial property tax bill is often based on the value of the vacant land, resulting in a comically low number. Your first full tax bill after the home is built will be a shock. Ask the builder for the projected total mill levy, including the metro district. If they can't tell you, that's a red flag. Budget for the higher payment from day one. Your lender will eventually adjust your escrow, and your monthly payment will jump.

Guidance for Homeowners

You have the power to challenge your home's valuation. Every odd-numbered year, when you receive your Notice of Valuation, you have a right to appeal. The window is short—usually from early May to the first week of June.

You can appeal based on two main arguments:

1. Factual Errors: The county has the wrong square footage, bedroom count, or lot size.
2. Valuation: The county's "Actual Value" is significantly higher than the sale prices of comparable homes in your immediate area that sold recently.

To prepare for an appeal, gather your "comps"—data on 3-5 similar homes that sold in the preceding 18-24 months for less than your new assessed value. You can find this data on the assessor's website. Present a clear, data-driven case. A successful appeal can save you hundreds or thousands of dollars over the next two-year tax cycle.

FAQ

How often are property taxes reassessed in Colorado? Residential property is reassessed by the county every two years, in odd-numbered years like 2023, 2025, and 2027. Your tax bill is based on that valuation for the next two years.

What is a mill levy? A mill levy is the property tax rate. One mill is equal to one dollar of tax for every $1,000 of your home's assessed value, not its market value.

Why is my property tax bill different from my neighbor's? Even if your homes have the same market value, you could be in slightly different taxing districts. The most common difference is a school district, fire district, or special metro district boundary running between your properties.

How do I find the property tax for a specific house? Go to the official website for the county assessor where the home is located (e.g., "Denver County Assessor"). You can search their property records by address to find the latest tax information.

Are property taxes high in Denver? No. Colorado has one of the lowest average effective property tax rates in the United States. However, Denver's high home prices mean the total dollar amount of the tax bill can still feel substantial.

What is a metro district tax? It is an additional property tax paid by homeowners within a specific new development. The tax revenue is used to pay back bonds that funded the neighborhood's infrastructure, like roads, sewers, and parks.

The Granger take

Property taxes are messy, but the lesson is simple. Don't get fooled by percentages or promises of great amenities. The only number that matters is the final tax bill you have to pay every year.

Look past the shiny new countertops in that model home and ask about the mill levy. A low tax rate in an established Denver neighborhood like Wash Park or Park Hill often beats a high-tax new build in the suburbs, even if the sticker price is higher. Do the math yourself.