Assessors' Reference Library Manuals

The Assessors’ Reference Library (ARL) is a series of three manuals and a statutory index that addresses Colorado property assessment.

To search these documents, view the ARL in your browser by clicking the relevant link then pressing ctrl+f on your keyboard to get a search box. To navigate within the table of contents, you will have to download the document.


Statutory Index

The Statutory Index is a compilation of statutory references of title 39, articles 1-14 and related property tax statutes.

Volume 2: Administration Manual

ARL, Volume 2 is the volume within that series that focuses on the administration of property taxes. It contains assessment procedures, processing policies, and legal references for administration of the assessor’s office.


Volume 3: Real Property Valuation Manual

ARL, Volume 3 addresses real property valuation. Its purpose is to provide a reference source for assessment policies and procedures for real property valuations according to the Colorado Constitution and statutes.


Volume 5: Personal Property Manual

ARL, Volume 5, deals with personal property assessment. This manual provides a reference source for assessment and administrative policies and procedures for the valuation and administration of personal property.



To find older replacement pages or complete manuals, please visit the ARL Archives.


The Assessor's Reference Library Manuals may be purchased separately in paper format or together on one CD. To order, fill out the form, and return the form to our office with your check.