The 10-Year Clock Behind Colorado's Senior Exemption
Program and regulatory figures verified September 19, 2026. Details change; confirm your scenario with us.
This is the rule that makes moving expensive for a long-tenured Colorado owner, and it is the reason the repealed bridge existed at all.
The requirement, exactly
Colorado's Division of Property Taxation states three conditions for a qualifying senior. The applicant is at least 65 years old on January 1 of the year of application. The applicant or their spouse is the owner of record and has owned the property for at least 10 consecutive years prior to January 1. And the applicant occupies the property as their primary residence and has done so for at least 10 consecutive years prior to January 1.
Ownership and occupancy both, for the same decade, on the same house.
The exceptions, and what is missing from them
An applicant may still qualify where the ownership or occupancy requirement cannot be met for specific reasons: title is held in a trust or other entity solely for estate planning, with the qualifying senior or spouse as the maker; the senior was confined to a hospital, nursing home or assisted living facility; the prior home was condemned in an eminent domain proceeding or sold under threat of one; or the prior home was destroyed or rendered uninhabitable by a natural disaster.
Read that list again and notice what is not in it. Downsizing. Moving closer to family. Leaving a house with stairs. Relocating from the Front Range to the Western Slope or the other way. Every ordinary reason a 70-year-old moves is outside the exceptions, which means the exemption ends and a new 10-year period begins.
That is not an oversight in the statute; it is the design. It is also precisely why the legislature created a portability bridge in 2024, and why repealing it in 2026 has a real consequence rather than a symbolic one.
What the clock does to a payment
Property tax sits inside the housing payment underwriting measures, so it sits inside your debt ratio. For a long-tenured Colorado owner, comparing the current payment to the projected payment on a new house without accounting for a lost exemption produces a number that is wrong in a consistent direction: too low.
The gap is not a one-year adjustment either. Under the current rules the earliest the exemption could return is the eleventh January after the move, assuming continuous ownership and occupancy from the start. A plan built on the assumption that the tax picture normalises quickly is a plan built on a decade of being wrong.
We model it the other way: the new home's tax line without the exemption, for as long as the rules say it applies. If that payment works, the move works. Run your own dates on the 10-year clock calculator.
What it changes about the plan
- It raises the true cost of the next house, which changes what price range is genuinely affordable.
- It makes the "carry both and recast" structure more attractive, because it avoids adding financing cost on top of a higher permanent tax line.
- It makes renting the departing home worth a serious look, since the old house keeps its own status while you decide. The Colorado wrinkle there is HB24-1098.
- It argues for having the conversation before you are under contract rather than after.
None of this is a reason not to move. It is a reason to know the number first.
Exemption eligibility, property tax classification and landlord notice requirements are legal and tax questions. Your CPA, a Colorado attorney, and your county assessor own those answers. We flag them because they change the numbers we underwrite.
Frequently asked questions
How long must you own a home in Colorado to get the senior exemption?
At least 10 consecutive years of both ownership and occupancy as your primary residence, prior to January 1, and you must be at least 65 on that January 1. The exemption is 50% of the first $200,000 of actual value.
Does moving reset the Colorado senior exemption clock?
Yes. The exemption attaches to a home you have owned and occupied for 10 consecutive years, so a move ends it and starts a new qualifying period. The statute's exceptions are limited to estate-planning trusts, confinement to a hospital or care facility, condemnation, and destruction by natural disaster. A voluntary move is not among them.
Is there any way to keep the exemption when I move?
Not any more. SB24-111 created a qualified-senior primary residence classification that acted as a bridge for tax years 2025 and 2026, and SB26-116 ended it for tax years beginning on or after January 1, 2027, with applications capped through July 15, 2026. Your county assessor can confirm your specific situation.
Can I claim the senior exemption on two Colorado properties?
No. Only one exemption per tax year is allowed for a residential property, and an applicant who attempts to claim it on more than one property, provides false information, or fails to notify the county assessor of a change in ownership or occupancy within 60 days is subject to statutory penalties.
Mike Certo · NMLS #260555 · Cornerstone First Mortgage NMLS #173855 · Equal Housing Lender. Educational content about financing, not a loan commitment and not legal, tax, or real estate advice. Property tax classifications, exemption eligibility, and landlord-tenant rules change and depend on your facts; your county assessor, your CPA or a Colorado attorney, and your real estate agent each handle their own part. Loans are subject to borrower and property qualification.