If you own property in Arapahoe or Elbert County, the most important thing to do with your 2026 valuation notice is mark your calendar. You have from May 1 through June 8, 2026 to file an appeal if you disagree with the number, and missing that window means losing your right to protest for the entire tax year (Arapahoe County Government, arapahoeco.gov). Elbert County follows the same June 8 cutoff (Elbert County Government, elbertcounty-co.gov). This is what's called an intervening year for Arapahoe County, meaning most owners won't even get a new notice unless something changed on the property, like a remodel or new construction. Elbert County real property gets reassessed every odd year under state law, so 2026 carries forward the value set in 2025 unless there's been a change. Whether you're in a subdivision near Aurora or out on a few acres by Kiowa, the deadline is the same. Let's walk through what your notice actually says and what you should do next.
Here's your quick game plan for the next few weeks:
- Check whether you actually received a new Notice of Valuation this year, or if your property falls into the intervening year category with no changes.
- Compare your new assessed value against recent sales in your area, keeping the county's data cutoff in mind.
- Circle the appeal deadline: postmarked or received by the Assessor no later than June 8, 2026.
- If you're a qualifying senior or veteran in Arapahoe County, note the exemption deadline of July 1, 2026.
- File your appeal early. Waiting until June 7 is asking for trouble.
What Is the 2026 Reassessment Cycle, Exactly?
Most property in Colorado gets revalued every odd numbered year, 2023, 2025, 2027, and so on, under state law (Elbert County Government, elbertcounty-co.gov). That means 2026 is what the counties call an intervening year. Your value from the 2025 reassessment carries forward unless something changed the property itself, like an addition, a change in how it's classified, or new construction.
For Arapahoe County specifically, the 2026 valuation reflects your property as it existed on January 1, 2026, but it's based on sales data collected between July 1, 2022 and June 30, 2024, with an appraisal date of June 30, 2024 (Arapahoe County Government, arapahoeco.gov). That's a mouthful, but it matters because the Assessor legally cannot use comparable sales from after that June 2024 cutoff, even if your neighbor's place out toward Watkins or Byers sold for a very different number last month.
How Do I Read My Notice of Valuation?
If a new notice lands in your mailbox, look for two numbers: the actual value (what the Assessor thinks your property is worth) and the assessed value (the percentage of that used to calculate your tax bill). Those percentages, called assessment rates, are set by the state and they changed for 2026, which we'll get to in a minute.
If you don't get a notice at all this year, that's not an oversight. Since 2026 is an intervening year for Arapahoe County, only properties with a qualifying change get a new Notice of Valuation (Arapahoe County Government, arapahoeco.gov). No notice generally means your value from last year's cycle stands, whether you're closer to Parker and Castle Rock or further out toward Agate.
When Is the Appeal Deadline in Arapahoe and Elbert Counties?
Both counties give you the same window this year. You can file a protest with the Assessor's Office from May 1 through June 8, 2026, and it has to be postmarked or received by that date, not just dropped in the mail on June 8 and hoped for the best (Arapahoe County Government, arapahoeco.gov; Elbert County Government, elbertcounty-co.gov).
Miss it, and you lose your right to protest the 2026 valuation entirely. There's no extension, no do over, no "I meant to get to it." In Arapahoe County, the Assessor has to mail or provide a Notice of Determination back to you by June 30, 2026 (Arapahoe County Assessor, arapahoeco.gov). Elbert County appeals can be submitted by email to the Assessor's appeals address, which makes this one of the easier deadlines to actually hit if you plan ahead instead of scrambling in the first week of June.
What Happens After You File an Appeal?
Here's something a lot of folks don't realize. In Elbert County, there's no presumption that the Assessor's number is automatically correct. The Assessor and the taxpayer sit on equal footing during an appeal (Elbert County Government, elbertcounty-co.gov). That means your job is simply to bring evidence, comparable sales, photos, whatever supports your case, and let the Assessor weigh it fairly rather than treating the original number as gospel.
It's also worth knowing that Elbert County's Assessor's Office was the first in Colorado to earn the IAAO Certificate of Excellence in Assessment Administration back in 2020, a national quality benchmark for how assessment offices run their operations. That doesn't mean every single value is right, but it does mean there's a documented, consistent process behind the numbers, which can actually help you build a clearer case when you disagree.
How Do the New Statewide Assessment Rates Affect Your Tax Bill?
For 2026, residential assessment rates are set at 6.8% for local governments (after a 10% of value reduction capped at $70,000) and 7.05% for school districts, under HB24B-1001 (Colorado Legislative Council Staff / countrytaxcalc.com summary of state law). There's also a 5.5% annual cap on most local governments' property tax revenue growth.
If you own commercial or agricultural property, both are assessed at 25% for 2026. Vacant land stays at 27.5%, and most other non-residential and personal property sits at 26% (Independence Institute analysis of HB24B-1001, i2i.org, September 2024).
These rates apply on top of whatever actual value your notice shows, so a higher assessed value doesn't automatically mean a proportionally higher bill. The rate itself is part of the math too, and it's the piece most homeowners skip right over.
Don't Forget the Senior and Veteran Exemption Deadline
If you're 65 or older and have lived in your home for at least ten years, or you're a qualifying disabled veteran, Colorado's senior and veteran property tax exemption can reduce what you owe. For Arapahoe County owner-occupiers, the deadline to apply for the 2026 exemption is July 1, 2026 (Arapahoe County Treasurer, taxsearch.arapahoegov.com).
This one's separate from the appeal deadline, so don't mix the two up. You can appeal your valuation and apply for the exemption.
Thinking About What Comes Next Out on the Eastern Plains?
A valuation notice is a decent excuse to think bigger picture. Maybe your taxes near Aurora or Parker keep climbing and you're wondering what land actually costs out toward Bennett, Strasburg, or Deer Trail. Maybe you're already settled in Elizabeth or Kiowa and just want a second opinion on whether your new value lines up with what's actually selling nearby.
Either way, I've spent my career working these exact counties, from the edges of the Denver metro all the way out to Limon and Peyton, and I've got a good feel for how these numbers compare across the Eastern Plains. If you want to talk through your notice, your options, or what's happening with values in your corner of Elbert or Arapahoe County, reach out to me at Chelsea Pruitt Real Estate. No pressure, just a conversation.