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The Castellan blog.

On property tax appeals: how counties set assessed values, when an appeal makes sense, and what the process involves in California, Georgia, and Florida.

Featured Aug 14, 2026 · 7 min read

Market Value vs. Assessed Value: What Property Owners Need to Know

The value on your tax bill is not the price your property would sell for. How counties get from market value to assessed value in California, Georgia, and Florida, and why the difference matters for appeals.

Property Tax Assessments Commercial
California

Prop 8 vs. Prop 13: Why California Commercial Assessments Can Be Appealed Every Year

Proposition 13 caps how fast your California assessment can rise. Proposition 8 requires the county to lower it when market value falls. How the two interact, and why decline-in-value review is an annual question for commercial owners.

Aug 11, 2026 · 8 min
Florida

TRIM Notice Explained: What Florida Property Owners Should Do When It Arrives

Florida's Truth in Millage notice arrives each August and starts a short clock. What the TRIM notice shows, what the 25-day petition deadline means, and how to read the values on it.

Aug 8, 2026 · 6 min
Georgia

Georgia's 299(c) Freeze and HB 581: What Changed for Property Owners

Two Georgia rules worth knowing: the three-year value freeze that follows a completed appeal under O.C.G.A. 48-5-299(c), and the floating homestead exemption from House Bill 581. What each one does and does not do.

Aug 1, 2026 · 7 min
Commercial

What Counts as Evidence in a Commercial Property Tax Appeal

Appeal boards want proof, not opinions. The evidence categories that carry weight in commercial assessment appeals: the county's own record, income and expenses, comparable assessments and sales, and condition.

Jul 24, 2026 · 8 min
Assessments

Reading Your Assessment Notice: A Line-by-Line Guide for CA, GA, and FL

Assessment notices bury the number that matters under the ones that don't. Which line to check on a California, Georgia, or Florida notice, what starts your appeal clock, and what to do in the first week.

Jul 17, 2026 · 6 min