Travis Bunn

Founder, AppealDesk · Published March 27, 2026 · Updated August 2, 2026

Will Colorado Reassess the House I Inherited? Why the Tax Bill Can Still Jump

Updated August 2026

Here is the answer most heirs are relieved to hear: no. Colorado does not reappraise a home because it changed hands. There is no transfer-triggered reassessment, no uncapping, and no new base value stamped on the deed the way California or Michigan heirs experience. Every property in the state gets revalued on the same biennial clock, in odd-numbered years, whether it sold, transferred through probate, or sat untouched for decades.

And yet the first full tax bill on an inherited Colorado home is often hundreds of dollars higher than the one the decedent was paying. The culprit is almost never the valuation. It is the senior homestead exemption, which quietly dies with the qualifying owner and does not pass to children, siblings, or anyone else except a qualifying surviving spouse.

Understanding that one mechanism, plus where the biennial calendar sits when you inherit, tells you almost everything about what your bill will do next. Six facts frame the whole situation:

• Colorado reappraises every property statewide in odd-numbered years; values carry through the even year in between.
• An ownership change, including inheritance, is not a reappraisal trigger. Only physical or use changes are.
• The senior exemption removes 50% of the first $200,000 of value, but it requires ten consecutive years of owner-occupancy, so heirs start over.
• Since 2025 there are two residential assessment rates, one for school levies and a lower one for everything else.
• Colorado has no inheritance tax and collects no estate tax for deaths after 2004.
• The protest window for any owner, heir or not, closes June 8.

The Transfer Itself Changes Nothing

Colorado reappraises all real property in odd-numbered years (2025, 2027, and so on). In the even-numbered intervening year, the value simply carries forward unless something physical changed, such as new construction, demolition, a parcel split, or a change in the property's use. County assessors publish this list of unusual conditions, and an ownership change is not on it. A death, a probate distribution, or a trust transfer leaves the assessor's value exactly where it was.

The values themselves also look backward, not at your inheritance date. Under section 39-1-104(10.2), C.R.S., each reappraisal draws from a statutory base period of sales ending June 30 of the year before the reappraisal year. The 2025 and 2026 values, for example, reflect the market as of June 30, 2024. If the market climbed after that date, your inherited home's taxable value has not caught up yet. If it fell, you may be paying taxes on a value the market no longer supports, which is exactly what the protest process exists for.

The Real Trap: The Senior Exemption Dies With the Owner

Colorado's senior homestead exemption, codified at section 39-3-203, C.R.S., removes 50% of the first $200,000 of actual value from taxation. On any home worth $200,000 or more, that is a flat $100,000 of value the county cannot tax.

To qualify, the owner must be 65 or older on January 1 and must have owned and occupied the home as a primary residence for ten consecutive years. Once granted, the exemption stays in place without annual reapplication, which is exactly why so many estates find it still sitting on the tax bill months after the qualifying owner has died.

That ten-year owner-occupancy requirement is why heirs cannot inherit the benefit. Even if you are 66 and move into the house the day probate closes, your clock starts at zero. The exemption belongs to the qualifying senior, not to the property.

The one carve-out: a qualifying surviving spouse

A surviving spouse can keep the exemption if all of the following are true:

• The deceased spouse met the age, ownership, and occupancy requirements before passing
• The surviving spouse occupied the home with the senior as a primary residence and still lives there
• The surviving spouse has not remarried

If you are the adult child, grandchild, or sibling of the decedent, none of this applies to you. The exemption comes off, and the full actual value becomes taxable going forward. County application deadlines matter here too: El Paso County, for example, set July 15 as the deadline to apply for tax year 2026.

What losing the exemption costs, in dollars

A clearly hypothetical example. Say the inherited home has an actual value of $480,000 and sits in a district with 45 school mills and 40 mills of county, city, and special district levies (real mill levies vary widely by county and district):

• With the exemption: taxable value is $380,000. School tax: $380,000 x 7.05% x 45 mills = about $1,206. Local tax: $380,000 x 6.25% x 40 mills = $950. Total roughly $2,156.
• Without it: the full $480,000 is taxable. School tax: about $1,523. Local tax: $1,200. Total roughly $2,723.

That is an increase of about $567 a year with no change in the assessor's opinion of value. Heirs who see a jump like this often assume the county reassessed the house at inheritance and look for a reassessment to fight. There is none. The value line on the bill is the same; the exemption line is gone.

A note on SB24-111 portability (it does not help heirs)

In 2024 the legislature passed SB24-111, creating a "qualified-senior primary residence" classification for tax years 2025 and 2026. It lets a senior who already earned the exemption keep an equivalent reduction after moving to a new primary residence, even though the ten-year clock reset. Read it carefully: the portability belongs to the senior who previously qualified. It is not a mechanism for heirs to keep a decedent's exemption on an inherited house.

Which Assessment Rate Applies Now (After Three Years of Whiplash)

If you inherited the house recently, the paperwork in the decedent's files may reference three or four different assessment rates. All of them were real at some point. Colorado spent 2023 and 2024 rewriting its property tax math:

• November 2023: voters rejected Proposition HH, the ballot measure that would have restructured rates and TABOR refunds together.
• Late 2023: a special session produced SB23B-001, a one-year patch for tax year 2023 that valued residential property at 6.7% after subtracting up to $55,000 of value.
• 2024: SB24-233 rebuilt the system, splitting residential property into two assessment rates starting in 2025: one for school district levies and a lower one for everything else.

For the 2026 tax year, residential property is assessed at 6.25% for local government levies and 7.05% for school district levies. So the single "assessment rate" heirs look for on older tax bills no longer exists; your bill now blends two. When you estimate what an inherited home will cost to hold, run both rates against their respective mill levies, as in the example above.

One more variable: mill levies are set district by district, so two inherited homes with identical values in different parts of the state can carry very different bills. The county treasurer's statement for the parcel lists every levy that applies to that specific address.

Where the Biennial Calendar Catches Heirs

Because Colorado revalues everything at once in odd years, what happens to your bill depends on where in the two-year cycle the inheritance lands:

• Inherit in an even (intervening) year, like 2026: the value carries forward from the prior odd-year reappraisal. The number will not change on its own until the next odd-year reappraisal, but the protest right does not pause: assessors mail a Notice of Valuation by May 1 and accept protests through June 8 every year, intervening years included (C.R.S. 39-5-122).
• Inherit in an odd year: a fresh statewide reappraisal is landing at roughly the same time. The May 1 notice may show a large jump that has nothing to do with the inheritance; it reflects market movement over the base period ending the previous June 30.

Two hypothetical timelines

• You inherit in August 2026. The value on the books came from the 2025 reappraisal and reflects the market as of June 30, 2024. It will not move on its own for the rest of 2026, and because the annual May 1 to June 8 protest window has already closed by August, your next chance to challenge the value is the May 1, 2027 Notice of Valuation, with a protest due by June 8, 2027. Had you inherited before June 8, you could have protested the carried-forward value that same year.
• You inherit in March 2027. A statewide reappraisal notice arrives by May 1, weeks into estate administration, and it prices the home off the base period ending June 30, 2026. If nobody is watching the mail, the June 8 protest deadline passes while the estate is still opening bank accounts.

That second scenario is the operational trap. The Notice of Valuation goes to the owner of record's address on file, which is often the decedent's own address or an old mailing address. Estates that have not updated the assessor's records routinely miss the notice entirely, and with it the short protest window. If you are the personal representative or the new owner, updating the mailing address with the county assessor should happen in the first weeks, not after probate wraps.

No Inheritance Tax, No Estate Tax, and What That Does Not Cover

Colorado enacted an inheritance tax in 1927 and replaced it with an estate tax in 1980. That estate tax was tied to the federal state death tax credit, and when Congress phased that credit out, Colorado's estate tax went with it. For anyone who died after December 31, 2004, there is no Colorado estate tax filing and no payment. Only the federal estate tax can apply, and only to estates above the federal exemption threshold, which the vast majority of Colorado estates never reach.

Do not let that comfort blur into the property tax picture. The annual property tax obligation continues uninterrupted through the estate, and any unpaid balances are a lien the county treasurer will eventually enforce regardless of who inherits. Death taxes and property taxes are separate systems; Colorado waived one and not the other.

One More Thing to Check: Deferred Taxes Are a Loan Against the House

Colorado runs a property tax deferral program through the state treasury for homeowners 65 and older and for active military service members. It is easy to misread: the state was not forgiving the decedent's taxes, it was lending them the money, at low simple interest, with the loan secured against the home.

If the person you inherited from was enrolled, that balance does not disappear at death:

• The deferral loan, plus accrued interest, comes due when a disqualifying event occurs, and the participant's death is the event most estates run into.
• A surviving spouse who is at least 60 and listed on the title can ask the state treasury to keep the deferral in place; the treasury must review and approve the continuation.
• Loans issued under the now-closed tax-growth deferral category also stay on the books until a disqualifying event, even though that category no longer accepts new applicants.

Beginning in 2026, county treasurers handle deferral applications and administration, so the county treasurer's office is the right first call. Ask two questions: is there a deferral balance on this parcel, and are any prior-year taxes unpaid? Both are liens that follow the property, not the person, and both should be settled or accounted for before the estate distributes the home.

Protesting the Value as an Heir

Inherited homes are unusually good protest candidates, for a reason built into how estates work: many heirs obtain a date-of-death appraisal for the federal stepped-up basis. That is a professional opinion of market value, often the strongest single piece of evidence a homeowner can bring, and most protesting owners never have one. If the appraisal comes in below the assessor's actual value, you already have the core of a case. Just remember the assessor values as of the base-period appraisal date (June 30 of the year before the reappraisal year), so evidence closest to that date carries the most weight.

The path and deadlines, which apply to an inherited home the same as any other:

• May 1 to June 8: protest to the county assessor, postmarked or delivered by June 8 (C.R.S. 39-5-122). Most counties accept online filings.
• By July 15: if the assessor's Notice of Determination goes against you, petition the County Board of Equalization (C.R.S. 39-8-106). CBOE decisions issue by August 5 (C.R.S. 39-8-107).
• Within 30 days of the CBOE decision: escalate to the Board of Assessment Appeals, district court, or binding arbitration.

Evidence that works for an inherited home

• The estate's appraisal: a full professional opinion of value, already paid for, that most protesting homeowners do not have.
• Base-period sales: comparable sales from the statutory data window the assessor was required to use, not just the most recent sales.
• Condition documentation: long-owned homes often carry deferred maintenance that mass-appraisal models miss. Photograph the original kitchen, the aging roof, the unfinished repairs, and get contractor estimates.
• The property record card: long-held homes accumulate record errors, such as a basement listed as finished that never was, square footage from a decades-old sketch, or a garage conversion never corrected.

Our Colorado appeal guide walks through the full protest process, county by county, including where to file online and what each county's CBOE expects.

The First 90 Days: A Practical Checklist for Colorado Heirs

None of the steps below require probate to be finished, and several protect deadlines that will not wait for it:

1. Update the mailing address with the county assessor and county treasurer so the Notice of Valuation and the tax bill reach a living person.
2. Ask the treasurer for a payoff picture: current-year taxes, any delinquent balances, and any state deferral loan recorded against the parcel.
3. Report the ownership change to the assessor if the bill shows a senior homestead exemption and no qualifying surviving spouse remains in the home.
4. Pull the property record card and verify square footage, basement finish, and outbuildings against the actual house.
5. Save the date-of-death appraisal from the estate file; it doubles as protest evidence if the county's value looks high.
6. Calendar the protest window: Notices of Valuation mail by May 1 and the protest deadline is June 8, every year, not just reappraisal years.

The Bottom Line

Inheriting a Colorado home does not reset its taxable value, and no death tax applies. What changes is eligibility: the senior exemption comes off unless a qualifying surviving spouse remains, any deferral loan comes due, and the biennial reappraisal keeps running on its own schedule regardless of what the estate is doing.

Treat the property tax file as part of settling the estate. Update the addresses, account for the exemption and any deferral, and put May 1 and June 8 on the calendar for every year you hold the property. The heirs who get burned are almost never the ones who misunderstood the law; they are the ones who never saw the notice.

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