HB 1233 Colorado House · 2026 Regular Session

Property Tax Proceedings for Nonresidential Property

Summary
For property tax years commencing on or after January 1, 2027, the act makes it a petty offense for a person, in connection with nonresidential property, to certify the truth and accuracy of information provided to the assessor in connection with property valuation when the information is not true and accurate as to every material matter. The act also makes it a petty offense for a person, in connection with nonresidential property, to willfully aid or assist in filing information that is fraudulent or false in connection with property valuation. The act specifies the sentencing requirements for a person convicted of a petty offense pursuant to the act and authorizes the county attorney to file and prosecute any action arising under the act in the county court of the county in which the property is located. If a court of competent jurisdiction finds that a taxpayer committed a petty offense pursuant to the act, the property owner is not entitled to penalty interest earned on any tax refund; the board of assessment appeals does not have the authority to determine whether a taxpayer has forfeited this right.     Existing law requires a petitioner appealing either a valuation of rent-producing commercial real property to the board of assessment appeals or a denial of an abatement of taxes to the board of county commissioners to provide certain information to the board of equalization or to the board of county commissioners. The act requires the petitioner to provide information that is specific to the property at issue.      For property tax years commencing on or after January 1, 2027, the act allows a county to file a motion with the board of assessment appeals noting the county's preference that a case appealing a decision of the board of assessment appeals be heard in district court. The act allows the petitioner to elect whether the case will be heard by the board of assessment appeals or the district court.(Note: This summary applies to this bill as enacted.)
Bill status signed all 5 stages cleared
Introduction
Feb 2026
Committee Review
May 2026
House Passage
May 2026
Senate Passage
May 2026
Signed into Law
Jun 2026
Introduced Feb 18, 2026 Signed Jun 3, 2026
Maddy AI version diff · 5 comparisons

What changed between versions

Rerevised Final Act · 5 edits · May 19, 2026
MODERATE
This bill updates Colorado property tax laws for nonresidential properties, introducing penalties for providing false information to assessors and allowing counties to request that tax appeals be moved from administrative boards to district court under specific conditions. It also waives the right to interest on tax refunds if a property owner intentionally delays the process or provides false data.
Scope change
The bill applies to property tax years commencing on or after January 1, 2027, and specifically targets nonresidential properties.
ENFORCEMENT

New penalties were added for willfully making false statements or aiding in the preparation of fraudulent information regarding nonresidential property valuations, classified as petty offenses.

The bill authorizes county attorneys to file and prosecute actions related to these false information penalties in the county court where the property is located.

REQUIREMENT

Appeal procedures were modified to allow counties or the board of assessment appeals to request transferring certain nonresidential property cases from the board of assessment appeals to the district court.

Property owners appealing rent-producing commercial real property valuations must now provide specific financial data, including rental income, tenant reimbursements, itemized expenses, and rent roll data, to the county board of equalization or county commissioners.

A waiver of the right to interest on tax refunds was introduced if the district court or board of assessment appeals finds that a property owner intentionally delayed the process or provided false information.

Floor votes · Senate May 12, 2026 · House Apr 16, 2026

How they voted

5112
Passed · 1 other
Total votes 64
May 12, 2026
D Democratic42
41 Yea 1
97% Yea
R Republican22
10 Yea 12 Nay
54% Nay
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
18
Key actions
8
Committee
2
Amendments
2
Jun 3, 2026
Signed into law
Governor Signed
executive
May 20, 2026
Upper · Passed
Signed by the President of the Senate
upper
May 20, 2026
Lower · Passed
Signed by the Speaker of the House
lower
May 12, 2026
Introduced
House Considered Senate Amendments - Result was to Concur - Repass
lower
May 12, 2026
Senate · Passed
Senate Vote: pass (51-12-1)
senate
May 9, 2026
Introduced
House Considered Senate Amendments - Result was to Laid Over Daily
lower
May 8, 2026
Upper · Passed
Senate Third Reading Passed - No Amendments
upper
May 5, 2026
Upper · Passed
Senate Committee on Finance Refer Amended to Senate Committee of the Whole
upper
Apr 21, 2026
Introduced
Introduced In Senate - Assigned to Finance
upper
Apr 16, 2026
Lower · Passed
House Third Reading Passed - No Amendments
lower
Mar 19, 2026
Lower · Passed
House Committee on Finance Refer Amended to House Committee of the Whole
lower
Feb 18, 2026
Introduced
Introduced In House - Assigned to Finance
lower
3 primary · 12 co-sponsors

Sponsors