SepticMatch
Farmington · Oakland County · Michigan

Septic in Farmington, MI

Farmington follows the Oakland County code: a permit valid two years, an application valid one, and engineer plans if the Health Officer requires them.

Residents
11,472
Homes built before 1980
74.6%
Median home value
$273,000

Census figures: ACS 2023 five-year estimates (B01003, B25034, B25077).

Written by the SepticMatch editorial teamLast reviewed Oct 19, 2026

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Oakland County sets the septic rules

Septic permits, sale inspections and installer rules are set by the county health department, not by the city. Installer licensing, and operating permits for alternative systems.

Who permits septic systems
Oakland County Health Division, Environmental Health Services
Inspection at sale
No rule found in the county's published code
Permit steps
Apply online or at the counter for new residential, replacement or repair permits; construction and final inspections follow. Application valid 1 year; permit valid 2 years; engineer plans can be required.

See the Oakland County septic rules

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