Polk County's published annual rule provides an April 2 through April 30 protest window. For 2027, an odd-numbered assessment year, the county says each owner should receive an assessment notice by April 1. An informal review may be requested from April 2 through April 25, but an unresolved owner must still preserve the separate Board of Review filing deadline. The $249 FairPath owner-guided evidence packet is available now for every Polk County property, before, during, and after the filing season. It can organize the notice, Assessor property record, owner-verified facts, comparable sales, photographs, condition documents, signed petition, and official source links. FairPath does not request the informal review, submit the protest, choose the owner's asserted value, communicate with the Assessor or Board, appear at a hearing, or represent the owner.
Assessment context: Iowa property assessments use January 1 as the assessment date. Polk County's guidance directs owners to compare the Assessor's estimate with actual market value and identifies statutory grounds including inequity compared with similar property, assessment above the value authorized by law, exemption or classification, a property-record error, and fraud. Those are distinct claims. A percentage increase or tax bill alone does not establish one. Use the official Polk County property and sales searches to review the parcel's assessed value, land and building inventory, ownership, legal description, age, size, use, and available transaction information. The county's search remains live during its website transition, but owners should follow the current links from the official Assessor page rather than depend on an old bookmark. Owner corrections should remain labeled as homeowner-provided until reviewed and approved.
Filing process: A Polk County protest must be written and signed. The petition identifies the property, current assessment, requested value, authorized ground, and supporting facts. An owner who wants to speak with the Board must request an oral hearing in the written petition. Polk says a separate petition is required for each parcel. The county currently publishes email, fax, mail, and personal-delivery routes through the Assessor's office. For mailed filings, the petition must be timely postmarked; if April 30 falls on a weekend, the county describes a next-business-day extension. The April 2–25 informal review is a separate opportunity to discuss the record with an assessor. If an agreement is reached, the owner may avoid the formal Board protest. If no agreement is reached, do not assume the discussion preserves the April 30 filing. Later review by the Iowa Property Assessment Appeal Board or district court is a separate stage with its own decision-relative requirements.
Evidence to review: Choose evidence that matches the stated protest ground and the January 1 assessment date. For an over-value claim, document recent arm's-length sales of similar Polk County properties with address, parcel number, sale date and price, size, age, style, quality, condition, location, and necessary adjustments. For an inequity claim, compare assessment records for genuinely similar properties and explain the relevant differences rather than relying on a raw neighbor list. For a property-record error, identify the precise incorrect field and support the correction with dated photographs, measurements, permits, surveys, inspections, or owner records. The county specifically identifies appraisals, recent sales or listings, three to five comparable sales, and photographs or inspection reports showing non-obvious deficiencies as potentially useful support. No category guarantees a change. Assemble the signed petition, exhibits, contact information, oral-hearing request if desired, and proof of transmission or postmark before the deadline.
Current deadline guidance: 2027 protest window: April 2–30. Polk County states that written property-assessment protests may be filed with the local Board of Review from April 2 through April 30 of the assessment year. Because 2027 is an odd-numbered year, the Assessor's published rule calls for assessment notices to each property owner by April 1. An owner may request an informal review with the Assessor from April 2 through April 25, but that discussion does not replace a timely, signed Board petition unless the owner and Assessor reach an agreement.
Polk County uses January 1 as the assessment date and publishes an annual April 2–30 Board protest window.
In odd-numbered years such as 2027, the Assessor's guidance calls for assessment notices to every property owner by April 1.
The April 2–25 informal-review period does not automatically extend or replace the Board of Review petition deadline.
The official Assessor site links to working property, sales, inventory, map, and protest-form searches during its website transition.
Official filing authority: Polk County Board of Review. https://www.polkcountyiowa.gov/county-assessor/appealing-your-assessment/
Source: Polk County Assessor, Appealing Your Assessment, https://www.polkcountyiowa.gov/county-assessor/appealing-your-assessment/. Reviewed 2026-07-30.
Source: Polk County Assessor, Polk County Assessor Property Search, https://www.assess.co.polk.ia.us/cgi-bin/web/tt/info.cgi?tt=query/contents/queryforms. Reviewed 2026-07-30.
Source: Iowa Property Assessment Appeal Board, How Do I Protest to the Local Board of Review?, https://paab.iowa.gov/how-do-i-protest-local-board-review. Reviewed 2026-07-30.
Source: Polk County, Property Search Continuity During Website Transition, https://www.polkcountyiowa.gov/board-of-supervisors/board-of-supervisors-news-and-press-releases/polk-county-assessor-s-website-will-have-continued-property-search-functionality-during-website-transition/. Reviewed 2026-07-30.