Home Generator Cost in Miami: What 104 County Filings Show

After a long outage, many homeowners start pricing a standby generator. Here is what the generator permits filed in unincorporated Miami-Dade show.

What the records show

From November 2025 through October 2026, 104 standby generator jobs were filed on houses in unincorporated Miami-Dade County. The middle job was valued at $15,000, meaning half were valued above that and half below. The middle half of jobs fell between $15,000 and $19,000 (many generator permits are filed at exactly $15,000, so the lower quarter and the middle value are the same). The work was filed by 25 different companies.

Why the values spread

Generator size, fuel type (natural gas or propane), the transfer switch, and the distance from the gas and electric connections drive the spread. Gas piping and a tank are often filed on separate permits, so the declared value here may not include them.

One caution: the value in these records is the declared value written on the permit when the job was filed. It is not a quote and not the final bill. The real cost can land higher or lower.

How to use the middle value

Treat $15,000 as a reference point, not a price. If a quote is far below the $15,000 to $19,000 range, ask what is left out. If it is far above, ask for a written breakdown. Then check that the company has filed similar jobs near you recently.

How we counted

• Source: Radar's permit database, built from Miami-Dade County building department records (permits issued by the County, which means unincorporated Miami-Dade). It does not include cities with their own building departments (City of Miami, Hialeah, Coral Gables, Miami Beach, Homestead and others). Data as of 2026-11-04.
• Coverage: permits issued 2025-11-03 to 2026-10-27. Every month in the window has filings (no gap): 2025-11 5, 2025-12 12, 2026-01 8, 2026-02 1, 2026-03 7, 2026-04 5, 2026-05 8, 2026-06 11, 2026-07 10, 2026-08 18, 2026-09 11, 2026-10 8.
• Which permits count: County ELEC or MECH permits with no master permit whose description names a generator; solar excluded; residential (ResidentialCommercial R), single-family or duplex use, issued 2025-11-01 to 2026-10-31.
• Values: EstimatedValue kept if 1000 <= value <= 150000; null/zero/outside excluded from value stats only. 100 of 104 permits had a usable value. Median and middle half (25th to 75th percentile) use those.
• What the value is: the declared permit valuation, not the final price.
• Groups with fewer than 20 permits are not shown. No homeowner names or addresses are used.