01

Polk County Assessor commercial inventory

Parcel owners, occupants, addresses, class, value, characteristics, and coordinates.

https://www.assess.co.polk.ia.us/cgi-bin/web/tt/infoqry.cgi?tt=downloads/downloads
02

Assessor adjustments by category — City of Des Moines

Annual statutory exemption and abatement totals from 2008 through 2025.

https://www.assess.co.polk.ia.us/cgi-bin/web/tt/query.cgi?tt=adjustments/juris_values_cat&juris=DM
03

Assessor regular levies — Des Moines

Published taxing-district levy combinations, including Des Moines City / Des Moines Schools.

https://www.assess.co.polk.ia.us/cgi-bin/web/tt/info.cgi?tt=taxes/byjuris&yr=2024&kind=Levies
04

Assessor rollback table

Official Iowa property-tax rollback percentages by class and year.

https://www.assess.co.polk.ia.us/cgi-bin/web/tt/info.cgi?tt=taxes/rollback
05

City of Des Moines research and budget

Official budget materials supporting the FY2028 and FY2029 gap projections.

https://www.dsm.city/departments/finance/research_and_budget.php
06

Iowa Code Chapter 427

State law governing property-tax exemptions.

https://www.legis.iowa.gov/docs/code/427.pdf

Source hierarchy

County parcel and valuation records control property-level fields. County tables control historical categories. State and local government documents control law, rollbacks, levy rates, and budget projections. Secondary reporting is labeled and never silently converted into a primary-source claim.