Mountain Park, GA Property Tax: Rates & How to Save (2026)
Mountain Park, GA property taxes: $3,344/year median. See rates, how to appeal in Gwinnett County, and check your savings.
Key Takeaways
Median home value: $350,300 in Mountain Park.Median annual tax bill: $3,344.Tax rate: Gwinnett County's combined rate is 3.506%.Appeals filed with: Gwinnett County Board of Assessors (not the city).Appeal deadline: 45 days from your assessment notice date.
Mountain Park is a small city on the Fulton County border with home values well above the state median, making it especially important for residents to check whether their assessment reflects actual market conditions. Here is how property taxes work in Mountain Park and what to do if your number looks too high.
Property Tax Rates in Mountain Park
Mountain Park property taxes are assessed and collected by Gwinnett County. Georgia assesses all property at 40% of fair market value.
Here is how the tax math works for the median Mountain Park home:
Fair Market Value (county assessment): $350,300
Assessed Value ($350,300 x 0.40): $140,120
Tax Rate (Gwinnett County combined rate): 3.506%
Annual Tax Bill ($140,120 x 3.506%): $4,912
The Census Bureau reports a median annual tax bill of $3,344 for Mountain Park, which reflects all levies including county, school, and city taxes.
How Mountain Park Compares
Mountain Park: $350,300
Gwinnett County: $380,900
Georgia (statewide): $170,200
Homes in Mountain Park are valued 8% below the Gwinnett County median. The median annual tax bill in Mountain Park ($3,344) is 132% above Georgia's statewide median of $1,439. Home values in Gwinnett County range from about $289,831 (25th percentile) to $487,646 (75th percentile), so your appeal savings depend heavily on where your home falls in that range.
How to Appeal Your Mountain Park Property Tax
Property tax appeals in Mountain Park are handled by the Gwinnett County Board of Assessors. You have 45 days from the date of the assessment notice to file using the PT-311A form.
Based on a combined tax rate of 3.506%. Your actual rate may vary by tax district.
A 10% reduction on the median Mountain Park home ($350,300 down by $35,030) would save approximately $491 per year - or $1,473 over three years with the 299c freeze.
The median annual property tax bill in Mountain Park is $3,344, based on Census ACS 2024 data. Using Gwinnett County's millage rate of 3.506%, the computed tax on the median home ($350,300) is approximately $4,912.
Who do I contact to appeal my Mountain Park property tax?
Appeals are filed with the Gwinnett County Board of Assessors, not at the city level. File a PT-311A form within 45 days of your assessment notice.
How is my Mountain Park property tax bill calculated?
Georgia taxes property at 40% of fair market value. For Mountain Park's median home ($350,300), the assessed value is $140,120. Multiply by Gwinnett County's millage rate of 3.506% to get your annual bill. Many Mountain Park homeowners find that assessed values have climbed faster than actual sale prices. Comparing your value to 3-5 recent sales of similar homes is the quickest way to spot an overassessment.
Is it worth appealing a small overvaluation in Mountain Park?
Yes. Even a $140 per year overcharge (from a $10,000 overvaluation at Gwinnett County's 3.506% rate) adds up to $420 over three years with the 299c freeze. The appeal is free to file and there is no risk of your assessment increasing.
Why is my Mountain Park property tax bill so high?
The median tax bill in Mountain Park is $3,344 -- 132% above Georgia's statewide median of $1,439. This reflects both higher home values and Gwinnett County's combined millage rate. If your individual assessment is higher than what your home would actually sell for, you are paying even more than necessary.
Can my property tax go up if I appeal?
No. Georgia law (O.C.G.A. § 48-5-311) protects you: the county cannot raise your assessed value above what they originally set just because you filed an appeal. The Board of Equalization only rules on the disputed value. Worst case, your appeal is denied and you keep your current assessment -- your taxes will not increase as a result of appealing.