5 county-level rules, plus city-specific rules for 1 city in Mobile County, Alabama.
Verified from official government sources
Mobile County has no zoning, so it cannot bar an accessory dwelling unit. But a detached living unit needs a county building permit and, off public sewer, an ADPH onsite sewage permit under Ala. Admin. Code r. 420-3-1.
Ala. Admin. Code r. 420-3-1-.01
The purpose of this chapter is to minimize the adverse effects of the disposal of sewage on human health and the environment by establishing and enforcing requirements for the design, permitting, installation, approval, and operation of an onsite sewage and disposal system (OSS) or innovative effluent discharge system (EDS).
A backyard shed in unincorporated Mobile County faces no zoning and no setback rule, because the county has no zoning. A shed still falls under the adopted 2012 IRC building permit program.
Converting a garage to living space in Mobile County is a change of use needing a county building permit under the adopted 2012 IRC. Adding a bathroom off public sewer triggers an ADPH septic permit.
Ala. Admin. Code r. 420-3-1-.01
The purpose of this chapter is to minimize the adverse effects of the disposal of sewage on human health and the environment by establishing and enforcing requirements for the design, permitting, installation, approval, and operation of an onsite sewage and disposal system (OSS) or innovative effluent discharge system (EDS).
A carport in unincorporated Mobile County faces no zoning setback, because the county has no zoning. As a roofed structure on the hurricane coast, it still needs a county building permit under the adopted 2012 IRC.
A tiny home's status in Mobile County turns on its foundation. On a foundation it is a dwelling needing a county building permit and, off sewer, an ADPH septic permit under r. 420-3-1; on wheels it is an RV.
Ala. Admin. Code r. 420-3-1-.01
The purpose of this chapter is to minimize the adverse effects of the disposal of sewage on human health and the environment by establishing and enforcing requirements for the design, permitting, installation, approval, and operation of an onsite sewage and disposal system (OSS) or innovative effluent discharge system (EDS).
1 cities in Mobile County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
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