Two listings, same week, same price. A three-bedroom in Anthem at $650,000 and a comparable floor plan in Baseline, also $650,000. On paper they look interchangeable. The buyer touring both assumes the tax line will be too, since both homes sit inside the same city, the same county, and even the same school district boundary in places. Then the closing disclosures come back, and the Baseline buyer is staring at a bill that runs $1,500 to $3,000 higher every year, on a home that cost the same money.
Nothing about that is a mistake. It is not a pricing error or a bad comp. It is Broomfield's tax structure working exactly as designed, and almost nobody explains it to buyers before they write an offer.
Why Buyers Assume the Bill Will Match
Broomfield is one of only two consolidated city and county governments in Colorado, the other being Denver. It was created in 2001 out of pieces of Adams, Boulder, Jefferson, and Weld counties specifically so residents would deal with one local government instead of four. One assessor's office. One tax roll. One set of records for the whole city.
That structure earns Broomfield a reputation for administrative simplicity, and it is a fair reputation. The City and County of Broomfield's own mill levy is 28.969 mills, and it has not moved since 2001. Twenty-five years of the same base rate from the same government is unusual. Most municipalities adjust their levy more often than that.
A buyer who hears "one assessor, flat city rate" reasonably concludes the tax bill will track the purchase price fairly evenly across the city. That assumption is where the trouble starts.
Where the Uniformity Actually Ends
The City and County of Broomfield's 28.969 mills is only one line on the bill. Every property in Broomfield also falls under a school district, a fire district, and in the newer master-planned communities, a metropolitan district. That last one is the variable that breaks the pattern.
A metro district is a special taxing district created under Colorado's Title 32 statute to finance the roads, water lines, sewer systems, and parks inside a new development. The developer builds the infrastructure, the district issues bonds to pay for it, and homeowners inside the district repay that debt through an additional mill levy layered on top of everything else. The total mill levy across Broomfield ranges from roughly 107 mills in areas with no metro district to more than 163 mills in metro district communities like Baseline, a spread visible in the city's own mill levy by tax district report.
That is not a rounding difference. It is a structural one, and it shows up on every tax bill inside those boundaries for as long as the bonds take to retire, which can run decades.
The City and County of Broomfield's own rate has not changed since 2001. Everything above 28.969 mills on a Broomfield tax bill is coming from somewhere else.
What That Gap Looks Like in Dollars
Run the math on a $650,000 home and the mill levy difference stops being abstract.
| Area | Metro district add-on | Approximate annual tax |
|---|---|---|
| No metro district (Adams 12 boundary) | None | roughly $4,700 to $5,200 |
| Anthem | roughly 18 to 35 mills | roughly $5,100 to $5,500 |
| Baseline | roughly 46 to 56 mills | roughly $6,500 to $8,500 |
Anthem's metro district sits at the low end of what Broomfield's master-planned communities carry. Baseline's sits at the high end. Between those two neighborhoods alone, a buyer looking at otherwise comparable homes is choosing between roughly $750 and $2,100 a year in additional tax exposure, purely based on which side of a boundary the house falls on.
This is not a new phenomenon specific to Baseline or Anthem. Broomfield's own FAQ page on mill levies uses the Broadlands neighborhood as its teaching example, noting a combined mill levy there of 122.872 in 2022, which the city broke down as an actual value of $530,000 producing a specific tax bill once the assessment rate and mill levy were both applied. The example exists because the city has fielded enough confused questions about it to build a public explainer around one specific address.
The Disclosure That's Supposed to Catch This, and Often Doesn't
Colorado did add a safeguard. For sales closing on or after January 1, 2024, an owner of residential property inside a metropolitan district organized since January 1, 2000 is required to give the buyer the district's official website before closing. The idea is that a buyer can look up the district directly, see its outstanding debt, and understand what they are actually taking on.
In practice, the disclosure is a website link buried in a stack of closing paperwork, delivered late in a transaction that is already moving fast. It tells a buyer where to look. It does not tell them to look, and it does not translate mill levy figures into a dollar amount they can compare against a different neighborhood down the road. A buyer who does not already know metro districts exist has no reason to open that link before they sign.
What This Actually Means If You're Comparing Broomfield Neighborhoods
The listing's tax figure on the MLS is historical. It reflects what the current owner paid last year, on a mill levy that may have shifted since, and it says nothing about whether that owner's homestead or senior exemption is about to disappear the moment the home changes hands. Two practical habits solve most of this before an offer goes in.
First, ask for the address-specific mill levy, not the neighborhood's general reputation. Broomfield's assessor publishes the full mill levy by tax area every year at the end of December, and any given address falls into exactly one of those areas. Second, ask whether the property sits inside a metro district at all, and if so, request the district's website directly rather than waiting for the disclosure to arrive during closing.
For a buyer comparing a $650,000 home in Anthem against one in Baseline, that second question is worth more than most of the other line items on a home inspection.
A Short FAQ
Does my mortgage lender's monthly payment estimate already include the metro district portion? Only if the estimate is built from the actual current tax bill for that specific address. A generic estimate based on the county's median rate will understate homes inside a metro district and can leave a buyer short at the first escrow reassessment.
Will the metro district charge eventually go away? Metro district mill levies fund bond debt, and Colorado law caps that debt repayment period at 40 years. Older districts closer to their bond payoff carry less remaining obligation than a district still early in construction, but the timeline is specific to each district and worth asking about directly.
Is the City and County of Broomfield's own rate likely to change soon? It has held at 28.969 mills since 2001, and the city's own 2026 budget materials describe a projected property tax revenue decrease driven by state assessment rate changes and declining commercial valuations, not a move by the city itself. The base rate has stayed remarkably still even while the bills on top of it have not.
Where This Leaves You
Broomfield's single government and single assessor really do make it simpler to research than a city split across county lines. That simplicity just does not extend to the number on the bottom of the tax bill, and the gap between a metro district neighborhood and one without shows up in real dollars, every year, for as long as the district carries debt. Knowing which side of that line a house sits on before you tour it is worth more than knowing the median price for the zip code.
If you are comparing Broomfield neighborhoods and want the mill levy breakdown for a specific address before you tour it, Marie Jacobs can pull it alongside a current market read. Get your instant home valuation to start the conversation.
