Onondaga County, NY — Property Tax Underwriting Guide
New York · Annual market review
What this means for multifamily underwriting
Syracuse/Onondaga County has moderate multifamily activity and mid-range effective rates for New York State.
Transaction type breakdown
Onondaga County municipalities assess annually. Sale prices are used as market evidence in annual reviews.
Refinance does not affect assessed value.
Ownership transfer is market evidence at the next annual review.
Tax appeal information
16.5 mill placeholder is a mid-county estimate; verify per municipality and school district.
Guide review
County guidance last reviewed: June 15, 2026
Tax-rate scope: Tax-rate scope is not established as parcel-specific; confirm the parcel's taxing-authority stack.
Official sources: Onondaga RPTS
Annual-market model is directionally accurate; millage is a county-level estimate.
Parclio estimates are underwriting guidance, not legal or tax advice. Always verify millage rates, the seller's assessed value, and appeal deadlines with the county assessor or local counsel before relying on these numbers for a credit decision.
Run a tax reset estimate for Onondaga County
Use Parclio's estimator to model the post-closing tax bill, NOI impact, DSCR change, and underwriting memo language for your next Onondaga County deal.