Cross-state property tax topic explainers

Last reviewed: June 2026 · Coverage: Cross-state explainers covering 14 states (Texas, California, Illinois, New Jersey, New York, Florida, Massachusetts, Connecticut, Pennsylvania, Ohio, Georgia, North Carolina, Virginia, Michigan)

These explainers cover the cross-state mechanics of property tax appeals — the things that work the same way (or in instructively different ways) across multiple states. For state-specific procedures, deadlines, and exemptions, see the individual state cornerstones from the homepage.

Mechanics

• Property tax assessment math: ratios, millage, equalization — How fractional ratios (Illinois 33⅓%, Connecticut 70%, Ohio 35%, Georgia 40%), full-market ratios (Texas 100%, Massachusetts 100%, NJ 100%), and acquisition-value (California Prop 13) translate into the actual tax bill. Equalization factors and what they do.
• Reassessment cycles by state — Annual (Texas, Florida), 4-year (Illinois quadrennial, Cook triennial), 5-year (Connecticut), 6-year sexennial + 3-year triennial (Ohio), county-set in Pennsylvania, municipality-set in Massachusetts and New Jersey, acquisition-value in California, decennial-or-otherwise in New York.
• State assessment caps overview — Florida Save Our Homes (3%/CPI), Texas 10% homestead cap, California Prop 13 (acquisition + 2%/year), Illinois Senior Freeze, NY tax cap.
• Why a NYC property tax appeal often won’t lower your bill — New York City caps Class 1 assessed value at 6% a year and 20% over five years (RPTL §1805), so most homes are assessed below market and a market-value grievance can’t move the bill. The three cases where an appeal does work — uncapped new construction or renovation, physical-record errors, and an effective market value that overshoots — plus the forward-looking benefit of trimming the cap’s target.
• Why your property taxes rise when commercial values fall — How a fixed levy divided by a shrinking commercial base shifts the burden onto homeowners. The Cook County case study ($1.9B pushed onto homeowners, 2021–2023), the office-value collapse, classification systems, levy caps, and the appeal that protects your share.
• Disaster-damaged home? The property tax break you have to claim — Storm, flood, or wildfire damage can cut your property tax through a separate remedy from the annual appeal — with its own form and its own deadline — but almost never automatically. The three shapes it takes (Texas §11.35 temporary exemption, California §170 reassessment, Florida §197.319 refund), the deadlines that trap people (105 days / 12 months / March 1), and why it’s a free, self-serve claim no contingency firm will chase for you.

Evidence

• Finding and documenting comparable sales — Recency, similarity, documentation standards, adjustment math, the 3-5 comp benchmark, common rejection patterns.
• Recent purchase price as property tax appeal evidence — The single strongest evidence at every appeal venue, when it works, when it doesn't (CA acquisition-value distinction).
• Property record errors as appeal basis — The easiest property tax appeal: factual record corrections. Texas §25.25(c) 5-year lookback, square-footage errors, demolished features still listed, denied exemptions.

Process

• Property tax appeal deadlines by state — No national date: relative windows that start when your notice is mailed (Texas May 15, Florida 25 days after TRIM, Georgia 45 days, Illinois ~30 days) vs. fixed calendar deadlines (Ohio March 31, Connecticut Feb 20, New Jersey April 1, New York Grievance Day). Miss it and the assessment stands all year.
• What it costs to appeal your property taxes, by state — The first level of appeal is free in 10 of 14 states and under $50 in most of the rest (Florida $15–$50, New York SCAR $30, New Jersey $5–$150). Real fees only appear at escalation — far less than the 30–50% a contingency service keeps of your win.
• What property tax appeal hearings actually look like — BAR, ARB, AAB, CBT, BOR, BOE, BAA, ATB hearing structure. What to expect, what to bring, how decisions get made.
• Your property tax appeal was denied: what comes next — The post-denial escalation map across nine states: binding arbitration (Texas), free or low-cost state tax tribunals (Illinois PTAB, Ohio BTA, New Jersey Tax Court), and court (Florida, California, Pennsylvania). Deadlines run 30–60 days from the decision; the guide covers the break-even math on whether to pursue.
• DIY vs. hire: decision matrix — When to DIY, when to hire a service company, when to hire an attorney. Cost economics by state.
• Property tax service companies: honest comparison — Ownwell, O'Connor, AppealDesk, others. 25-60% contingency landscape. What to ask before signing.
• Contingency fee math: how services calculate "savings" — The four math methods (year-over-year, vs. noticed value, multi-year, projected). Same successful appeal can produce a $0 fee or a $1,440 fee depending on which method the contract uses.
• The Year-Two Problem: why appeal wins often don’t hold — Three states (NJ, NY, PA) have statutory carryforward that locks an appeal win for 2–3 years or longer. Six states (CA, TX, OH, IL, MN, MA) treat appeals as year-specific. The map matters for contingency-fee math and for whether you budget to refile next year.
• Property tax appeal services in New York — NYC Tax Commission, Long Island grievance (Nassau ARC + Suffolk town BARs), upstate SCAR. Three distinct regimes with different fee structures, deadlines (March 31 / May 19, 2026), and post-denial routes.
• The $40K SALT cap and what your appeal is really worth — The 2026 SALT-deduction cap (OBBBA, $10K→$40K through 2029) makes property taxes deductible again for many itemizers — which quietly lowers the after-tax value of a winning appeal and reframes a contingency service’s percentage of “savings.” Who’s affected, the bracket math, and how to run your own number.
• The escrow shock: why a higher assessment raises your payment twice — A reassessment hits your mortgage escrow account twice — a permanent bump for the higher tax plus a one-year surcharge to repay the shortage — so your monthly payment can jump by roughly double the tax increase. Why a winning appeal may not lower it for up to a year under RESPA (12 CFR § 1024.17), and how to force the escrow re-analysis that turns a win into a lower payment.

Exemptions

• Senior and disability exemption deep-dive — STAR (NY), Senior Freeze (IL), Floating Homestead (GA), Circuit Breaker (CT), 100% Disabled Veteran exemptions across all 11 states.
• Exemption vs. appeal: two levers on one bill — An exemption is a free, status-based cut to your taxable base; an appeal contests the assessor’s value. Why contingency services pitch only the lever they can charge for — plus the 2026 exemption wave: Florida’s HJR 1F homestead increase, Ohio’s HB 479 credit, and Georgia’s new 45-day filing window.

Edited by The Editorial Team