Why Denver Metro Property Tax Bills Jumped in 2026

Why Did Property Tax Bills Jump So Much in Denver Metro for 2026?

Colorado property tax bills due in 2026 rose 20% to 40% or more for many Denver metro homeowners after two years of temporary, pandemic-era assessment relief expired. Senate Bill 22-238 and Senate Bill 24-233 had capped valuations and lowered assessment rates for the 2023 and 2024 tax years; neither discount applies to property assessed in 2025, so this year's bill reflects a much larger share of each home's real value. A new law, House Bill 24B-1001, trims the first $700,000 of a home's actual value by 10%, but that relief won't show up until the bill due in 2027.

If you've gotten a call this year from a client who opened their tax bill and didn't recognize the number, you're not dealing with an isolated case. This is happening across every county in the metro, and it's worth having a straight answer ready before your next listing appointment or buyer consultation turns into a tax question you weren't expecting.

What's actually driving the increase. Back in 2022 and 2024, Colorado lawmakers passed temporary fixes to soften the blow of rapidly rising home values: Senate Bill 22-238 cut assessment rates and knocked $15,000 off taxable valuations for the 2023 and 2024 tax years, and Senate Bill 24-233 later raised that valuation discount to $55,000. Both of those discounts expired for property assessed in 2025, which is the basis for the bill homeowners received this January. Nothing about this year's increase requires a home's value to have gone up; the relief simply went away, and the bill caught up to what the home was already worth.

One Arapahoe County homeowner's bill went from $3,876.98 two years ago to $5,435.47 this year, an increase of nearly 30% even after a $750 senior homestead discount. Manufactured home owners have been hit particularly hard, with some bills doubling year over year. If a client tells you their bill "doesn't make sense," it almost certainly does, once you walk through what expired.

What Changed, County by County

The underlying law is statewide, so Denver, Adams, Arapahoe, Boulder, Broomfield, Douglas, and Jefferson Counties are all working from the same assessment schedule, even though the actual bill varies by local mill levies, school districts, and special taxing or metro districts layered on top.

For 2026, the school district portion generally assesses around 7.05% of a home's actual value, and the local government portion runs in the low-to-mid 6% range, calculated after a 10% value exemption capped at $70,000. Mill levies on top of that vary block by block, which is why two similarly priced homes in different taxing districts can see noticeably different bills. Your clients' exact numbers should always come from the county assessor, not a rule of thumb.

Boulder County's assessor's office has described this as a season of fielding calls as bills land; Arapahoe County's experience has been similar. The pattern holds across the metro: most of this isn't a local fluke, it's the statewide relief expiring everywhere at once.

It's also worth knowing where Colorado is in its reassessment cycle. The state reassesses residential property in odd years, so 2026 is an "intervening year," and most homeowners won't get a new valuation notice, and the next general protest window doesn't open until May through June of 2027. If a client is convinced their 2025 valuation itself was wrong (not just the expired discount), ask their county assessor's office about filing an abatement petition. That process runs on a different timeline than the general protest window, and it's worth raising now rather than waiting for next spring.

What This Means at the Closing Table

A bigger tax bill doesn't stay a homeowner's problem once a property goes under contract. A few places this shows up on your deals:

Unpaid taxes attach to the property, not the person. If a seller falls behind on a now-larger bill, that shows up as a lien our team has to clear before you can close, the same way a judgment lien against a seller does. It's exactly the kind of item that surfaces on the title commitment, so it's worth a quick conversation with sellers who've mentioned the increase catching them off guard, better to know in week one than three days before closing. If your buyers or sellers aren't sure what to look for on that document, our guide to reading a title commitment walks through it line by line.

Prorations look different than they did a year or two ago. Our team prorates property taxes at closing based on the most current mill levy and assessed value on file, but with bills running this much higher, buyers should understand that their actual first full-year tax bill may land higher than the estimate on the settlement statement, especially on recent resales where the valuation is catching up or new construction where the land was assessed before a house sat on it.

Escrow adjustments are coming, and they're not a title issue. Buyers with a mortgage will likely see their loan servicer send an escrow-shortage letter once the new tax bill posts, raising their monthly payment to cover the difference. That's a lender servicing matter, not something our team handles at the closing table, but flagging it for buyers now means you're not fielding a confused call from a surprised client six months after closing.

This also lands at a moment when the Denver metro market has already shifted toward more buyer leverage. A few hundred extra dollars a month in taxes is enough to change what some buyers qualify for, which is one more reason to have your lender underwrite with this year's tax figures, not last year's.

What to Tell Buyers and Sellers This Week

If you've got a listing appointment, buyer consultation, or just a client who's asking about their bill, here's what's useful to bring:

1. Use current-year tax figures, not last year's, when you or a client's lender are estimating monthly payments. The gap between the two is bigger than it's been in years.
2. Flag special taxing districts and metro districts early. These layer on top of the base assessment and are a common source of closing-day surprises, especially in newer subdivisions.
3. Encourage sellers who are behind to get ahead of it. A tax lien discovered during the title search can delay a closing that otherwise would have gone smoothly.
4. Point clients toward an abatement petition if they believe their 2025 valuation was wrong. It's a different process and deadline than the regular protest window, and it's worth asking the county assessor about now.
5. Prepare buyers for a possible escrow-shortage letter after their first tax bill posts, and let them know that's a conversation for their loan servicer, not their title company.

Every county, district, and homeowner's situation is a little different, and the exact numbers always come down to the specific parcel. If you're working through what this means for a particular listing or a client's pre-approval, I'm happy to run through it with you. Reach out anytime.

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Frequently Asked Questions

Why did my property tax bill go up so much in 2026 in Colorado?

Temporary assessment relief passed in 2022 and 2024 (Senate Bills 22-238 and 24-233) expired for property assessed in 2025, which is the basis for bills due in 2026. The jump reflects relief going away, not necessarily a change in your home's value.

Will Colorado property taxes go down for 2027?

A new law, House Bill 24B-1001, adds a 10% reduction on the first $700,000 of a home's actual value, which should provide some relief on the bill due in 2027. It's a partial offset, not a full reversal of this year's increase, so don't assume next year's bill returns to pre-2025 levels.

How do unpaid property taxes affect a home sale in Denver metro?

Unpaid property taxes attach to the property itself, so they show up as a lien on the title commitment and have to be resolved before closing. This is one of the first things our team checks during a title search, and it's why sellers who are behind on taxes should address it early rather than waiting until closing week.

Can I appeal my Colorado property tax bill in 2026?

2026 is an intervening year in Colorado's reassessment cycle, so most homeowners won't receive a new valuation notice, and the next general protest window opens in May through June of 2027. Homeowners who believe their 2025 valuation was incorrect can ask their county assessor's office about filing an abatement petition, which follows a separate timeline.

How are property taxes prorated at closing in Colorado?

Taxes are prorated between buyer and seller based on the most current mill levy and assessed value available at the time of closing. Because many bills have increased significantly, buyers should expect their actual first full-year tax bill may run higher than the prorated estimate on the settlement statement.

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If you're thinking through what this year's tax increase means for a specific listing, a buyer's pre-approval, or a closing coming up on your calendar, I'm happy to walk through the numbers with you. Reach out anytime.

About Brenna Harper Brenna Harper is the Director of Sales Development with Chicago Title, serving Metro Denver. She turns real estate strategy and market intelligence into meaningful business growth for the real estate professionals she works with. Reach her at brenna.harper@ctt.com | 303-748-3965.

The above information is for general informational purposes only and should not be construed as tax or legal advice. Agents and clients with specific property tax questions should consult their county assessor's office or a qualified tax professional.