A buyer closes on a new build in Aurora. The listing showed property taxes of $2,100 a year. The first bill that lands after closing reads $4,600. Nobody lied on the disclosure form. Nobody hid anything. The MLS number came from a year when the lot was still dirt, and the home sits inside a metro district that has been quietly layering a debt mill levy on top of the county rate ever since the first foundation went in.
That gap between what the listing says and what the county actually bills is the kind of thing that catches out-of-state buyers off guard in Colorado, and it has nothing to do with the house itself. If you're relocating here, buying a second home in the mountains, or comparing a Denver-metro suburb to somewhere you've lived before, the state's paperwork has gotten more protective this year. But those protections only work if you know which question to ask and when the clock is running.
The Number on the Listing Isn't the Number on the Bill
Most subdivisions built in the Denver metro since 2000 sit inside a metro district, a special taxing entity created under state law to front the cost of roads, water, sewer, and parks for a new development. The district issues bonds, then repays them through a mill levy stacked on top of your regular county, school, and fire district taxes. Aurora, Castle Rock, Thornton, and Parker all have neighborhoods built this way, and so do plenty of newer communities across the metro and up into the mountain corridor.
The mill levy from a metro district commonly adds somewhere between 25 and 60 mills, and sometimes more, on top of the standard rate. On a $550,000 home, that can mean an extra $1,500 to $2,500 a year that never shows up in a basic online tax estimate. It shows up two ways instead: in the district's own budget documents, and eventually on the bill.
Colorado does require disclosure here. Since January 1, 2024, a seller of a home inside a metro district organized after January 1, 2000 has to give the buyer the district's official website. That's a small requirement with an outsized payoff, because the district's site is where the actual mill levy, bond schedule, and repayment horizon live, sometimes stretching 30 to 40 years. The listing's tax field is a historical snapshot. The district's own numbers are the forecast.
| What you see | What it actually tells you |
|---|---|
| MLS tax field | A backward-looking number, often from before the home was finished |
| County assessor site | Current assessed value and mill levy, but may lag new district assessments |
| District's official website | Current and projected mill levy, bond maturity, whether the levy is temporary or decades out |
If you're touring new construction anywhere in the Denver metro, or in a newer mountain-adjacent development, asking for the metro district website before you write an offer is a five-minute habit that can save a five-figure surprise over the life of the loan.
The Contract Changed on January 1, and Most of the Changes Are About Timing
Colorado's standard purchase contract, the Contract to Buy and Sell Real Estate, got a real rewrite this year. The Colorado Real Estate Commission adopted the update in August 2025, and the new version, often called CBS1 V2, became mandatory for any contract signed on or after January 1, 2026. If you bought here before this year, the shape of the document is still familiar. The specifics of a few deadlines are not.
Two changes matter most for a buyer moving between states.
The first is assignability. Under the new form, the contract is not assignable by the buyer unless the parties specifically add that right back in under Additional Provisions. That's a bigger deal than it sounds for anyone planning to close in an LLC that hasn't been formed yet, or for a family member fronting funds with the plan to transfer the contract later. Under the old form, that was murkier. Under this one, if you want it, you ask for it in writing before you sign.
The second is about the clock itself. The new form adds language clarifying what time of day a deadline actually expires, and gives the parties an option for what happens when a deadline lands on a weekend or holiday. It sounds procedural until you're the buyer whose Friday inspection deadline meant midnight to your agent and end of business to the seller's.
The change that generates the most anxious phone calls, according to the title professionals who process these deals daily, involves homeowner association documents. The updated contract states that a seller's obligation to deliver HOA documents is satisfied when the buyer actually receives them, not when someone requested them from the management company.
The seller's HOA document obligation is met when the buyer receives the documents, not when someone hits send. And there's no resolution deadline. If the buyer objects, the option is to terminate, not negotiate.
For anyone buying a condo or townhome in Cherry Creek, Lone Tree, or any other attached-product community, that single word, receipt, changes how the deadline sequence actually plays out. There's no window to argue about a bad reserve fund or a pending special assessment buried in the HOA packet. There's only the choice to walk or to close.
Colorado Isn't a Silent State, and the Rules Just Got a Refresh
Some states let a seller stay quiet unless asked. Colorado doesn't work that way. The state follows the general buyer-beware principle for things a reasonable inspection would catch, but that principle stops well short of letting a seller conceal a known material defect. If a seller knows about a real problem and says nothing, the purchase contract's language doesn't shield them.
The Seller's Property Disclosure form, the one nearly every Colorado transaction runs through, also has a new mandatory version dated for use on or after January 1, 2026. It runs to correct-to-current-actual-knowledge as of the date signed, and the duty doesn't end there. If a seller learns something new after signing, they're required to disclose it in writing before closing.
Radon is worth calling out specifically because of Colorado's geology. Roughly half of the state's homes test above the EPA's action level, according to the Colorado Department of Public Health and Environment's figures from January 2026. The disclosure form asks for known test results and mitigation details, not a fresh test, so a seller who tested years ago and never mitigated still has an obligation to hand over what they found. If you're comparing a house here to one in a state where radon rarely comes up, don't skip the question just because the box is unchecked.
One more shift worth knowing before you ever sit down with an agent. Starting August 12, 2026, Colorado real estate licensees are required to have a signed, written agreement with a buyer or seller before performing services on their behalf, a change tied to new statewide broker rules. It's a small procedural step, but if you're used to a more casual first conversation with an agent from a previous move, expect paperwork earlier in the process here, not later.
What This Actually Means If You're Moving Here
None of this makes Colorado a harder place to buy. If anything, the 2026 contract and disclosure updates lean more protective, with clearer deadlines, a firmer disclosure duty, and a specific mechanism for catching the metro district tax gap before it becomes a bill. The friction shows up for buyers who assume the protections are automatic. They're not. They're triggered by specific questions asked at specific points in the timeline, and the clock on most of them doesn't pause to explain itself.
If you're weighing a move into a Denver-metro suburb, a mountain community, or anywhere in between, the useful habit is simple: ask for the metro district's website before you write an offer, confirm which contract version you're signing, and read the HOA packet the day it arrives rather than the day before your deadline.
A Few Questions Worth Settling Early
Does the new contract change how much earnest money I need to put down? No. The typical range across the Denver metro is still around 1 percent to 3 percent of the purchase price. What changed is the flexibility around exactly when it's due, not the expected amount.
Do these rules apply the same way to a mountain property as they do to a suburban one? Yes. The Colorado Real Estate Commission's forms and the state's disclosure statute apply statewide, whether you're closing on a suburban lot in Highlands Ranch or a resort property in the mountains. A separate land-specific contract and disclosure form exist for vacant land purchases, which matters if you're buying acreage rather than a finished home.
What if my contract was already signed before January 1, 2026? It's still valid on the form you signed. The updated version only applies to contracts written on or after that date.
This is general market information, not legal or tax advice, and every transaction has its own wrinkles worth walking through with someone who knows the specific district, the specific building, or the specific mountain town in question.
If you're weighing a move into Colorado, whether that's a Denver-metro suburb, a mountain community, or something in between, Christensen Collective can walk you through what a specific property's contract, disclosures, and district obligations actually look like before you write an offer. Schedule a Personalized Consultation to start with the questions that matter for your address, not just the ones that matter statewide.
