Allegheny County's 2027 annual assessment appeal window is open from July 1 through September 1, 2026. An owner, school district, or municipality may appeal, and the county charges no annual filing fee. Owners can file online from the parcel's Appeal Status tab or submit the county form by email, mail, or in person; fax is not accepted. The first-level hearing is before the Board of Property Assessment Appeals and Review and is conducted telephonically under the county's current general information. FairPath can help organize an owner-managed evidence record and filing checklist. It does not submit the appeal, schedule the hearing, choose an opinion of value, speak for the owner, or claim an automated Allegheny packet.
Assessment context: Allegheny's assessment system requires careful separation of the county assessed value, current market evidence, and any state-set common-level ratio used in an appeal analysis. Start with the official parcel, owner, municipality, school district, land and building values, use, dimensions, living area, age, condition, and recent assessment history. The county includes dense Pittsburgh neighborhoods, older mill towns, river valleys, hillside sites, suburban municipalities, condominium projects, and rural edges. Topography, municipality, school district, view, access, environmental influence, renovation, and building type can make geographically close properties materially different. The annual appeal concerns the property's assessment for 2027; a tax-rate disagreement or exemption question follows a different path.
Filing process: Open the official Real Estate Portal, confirm the parcel, and use the Appeal Status tab if filing electronically. For a paper or emailed filing, download the current Annual Appeal Form, complete all ownership and parcel fields, state the value position, sign the certification, and submit by an authorized method before September 1. Keep the online confirmation, sent email, delivery receipt, or stamped copy. The county will schedule a telephone hearing before BPAAR and provide evidence instructions with the notice. Follow that notice rather than attaching materials in a way the current form does not permit. Preserve every exhibit shared with the Board and other parties. A later appeal from BPAAR goes to the Court of Common Pleas Board of Viewers and is a separate proceeding outside this guide.
Evidence to review: Build an Allegheny evidence table from official parcel records and credible market sources. For sales, record deed date, price, municipality, neighborhood, school district, property type, living area, lot, age, renovation, condition, topography, parking, and unusual transaction facts. Explain why the sales reflect the appealed year's market and how differences affect comparability. Assessment uniformity analysis should use the same assessment framework and any applicable ratio consistently, without mixing raw assessments and market values. Dated photographs, inspections, engineering reports, permits, contractor scopes, and appraisals can document condition, hillside, access, or physical-record issues. Hearing materials should be indexed and legible for a telephone presentation because the hearing officer must connect the owner's testimony to specific exhibits.
Current deadline guidance: 2027 annual appeals: July 1 through September 1, 2026. Allegheny County accepts 2027 annual assessment appeals from July 1 through September 1, 2026. The annual process has no filing fee. Special appeals from certain change notices use notice-specific deadlines and forms and are not interchangeable with the open annual route.
Allegheny's 2027 annual window is open now and closes September 1, 2026, creating a current filing opportunity rather than a post-season preparation page.
Annual appeals carry no county filing fee and may be filed online, by email, by mail, or in person, but not by fax.
BPAAR currently conducts hearings by telephone, making a clearly numbered evidence set and concise verbal explanation especially important.
Pittsburgh neighborhoods, separate municipalities and school districts, river valleys, hillsides, former industrial corridors, and suburban markets require localized comparison choices.
Official filing authority: Allegheny County Board of Property Assessment Appeals and Review. https://www.alleghenycounty.us/Services/Property-Assessments-and-Real-Estate/Appeals/Annual-Appeals
Source: Allegheny County Government, 2027 Annual Appeals, https://www.alleghenycounty.us/Services/Property-Assessments-and-Real-Estate/Appeals/Annual-Appeals. Reviewed 2026-07-16.
Source: Allegheny County Government, Property Assessment Appeals, https://www.alleghenycounty.us/Services/Property-Assessments-and-Real-Estate/Appeals. Reviewed 2026-07-16.
Source: Allegheny County Government, BPAAR Rules and Regulations, https://www.alleghenycounty.us/files/assets/county/v/2/government/property-assessment-and-real-estate/documents/bpaar/opa-board-rules-and-regulations.pdf. Reviewed 2026-07-16.