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///GEORGIA · COUNTY GUIDE

Property Tax Appeals in DeKalb County, Georgia (2026)

The 2026 deadline to appeal a DeKalb County property tax assessment is July 13, 2026. The filing window runs from May 29, 2026 to July 13, 2026.

File a real property assessment appeal within 45 days of the assessment notice date; the 2026 annual notice inspected shows notice date May 29, 2026 and appeal deadline July 13, 2026. County resources also state assessment notices are mailed in late May and the appeal deadline is 45 days from notice.

DeKalb County appeal, at a glance

DeKalb County, Georgia property tax appeals at a glance
2026 appeal deadlineJuly 13, 2026
Filing window opensMay 29, 2026
File withDeKalb County Property Appraisal Department / DeKalb County Board of Assessors, 325 Swanton Way, Decatur, GA 30030
Governing jurisdictionDeKalb County Board of Assessors / Property Appraisal Department
After a successful appealThe reduced value is frozen for the two following tax years (O.C.G.A. §48-5-299(c)).
Can a board raise the value?Yes — see below (O.C.G.A. §48-5-311)
Deadline source2026 Annual Notice PDF, DeKalb County Board of Assessors
Last verifiedAugust 16, 2026

When is the 2026 appeal deadline in DeKalb County?

The 2026 deadline is July 13, 2026. The window opens May 29, 2026. File a real property assessment appeal within 45 days of the assessment notice date; the 2026 annual notice inspected shows notice date May 29, 2026 and appeal deadline July 13, 2026. County resources also state assessment notices are mailed in late May and the appeal deadline is 45 days from notice.

Who do I file with?

Appeals are filed with the DeKalb County Property Appraisal Department / DeKalb County Board of Assessors, 325 Swanton Way, Decatur, GA 30030. The governing jurisdiction is the DeKalb County Board of Assessors / Property Appraisal Department.

How the appeal process works in Georgia

Georgia counties mail an Annual Notice of Assessment, and an appeal must be filed within 45 days of the notice date (O.C.G.A. §48-5-311). Appeals go to the county Board of Assessors and, if not resolved there, to the Board of Equalization — most settle on the evidence, and Georgia allows remote hearings. A successful appeal freezes the reduced value for the two following tax years (O.C.G.A. §48-5-299(c)), so one appeal can lower the bill for three.

Can an appeal raise my assessment?

Yes, it's possible — a Georgia Board of Equalization may increase, decrease, or sustain an assessed value on appeal (O.C.G.A. §48-5-311). That's why we check for that exposure before filing: we don't file when we see it, and if it surfaces after filing we withdraw. We'd rather lose the case than leave you worse off than when you started.

FAQ

When is the 2026 property tax appeal deadline in DeKalb County?
The 2026 deadline is July 13, 2026. The window opens May 29, 2026. File a real property assessment appeal within 45 days of the assessment notice date; the 2026 annual notice inspected shows notice date May 29, 2026 and appeal deadline July 13, 2026. County resources also state assessment notices are mailed in late May and the appeal deadline is 45 days from notice.
Who hears property tax appeals in DeKalb County?
Appeals are filed with the DeKalb County Property Appraisal Department / DeKalb County Board of Assessors, 325 Swanton Way, Decatur, GA 30030. The governing jurisdiction is the DeKalb County Board of Assessors / Property Appraisal Department.
What does it cost to appeal with Castellan?
Nothing up front. $0 upfront. Our fee is 35% of your first-year savings, only if we win. If your properties with Castellan are assessed at more than $5 million combined, your rate is 30% on everything. The same schedule applies in every state we serve, and it is in the agreement in front of you before you sign. If we don't win, you pay nothing.
Can an appeal raise my assessment?
Yes, it's possible — a Georgia Board of Equalization may increase, decrease, or sustain an assessed value on appeal (O.C.G.A. §48-5-311). That's why we check for that exposure before filing: we don't file when we see it, and if it surfaces after filing we withdraw. We'd rather lose the case than leave you worse off than when you started.
Does Castellan handle appeals in DeKalb County?
Serving California, Georgia, and Florida. Enter your address and we'll tell you either way — if it's outside what we cover today, you'll hear that plainly.

Sources

Last verified August 16, 2026.

Know where you stand.

Enter your address and we'll check DeKalb County's own records at no cost. If there's no case, we'll tell you that too.

Serving California, Georgia, and Florida.

Georgia property tax appeals. Any estimate is based on county assessment data and public records and is not a guarantee of any outcome. Representation and fee terms are provided in writing before any filing. Deadline information reflects published county materials as of the date shown above — verify with the DeKalb County Property Appraisal Department / DeKalb County Board of Assessors, 325 Swanton Way, Decatur, GA 30030 before relying on it.