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When a permit is required
Permit triggers and exempt work for Wayne County
Septic or onsite sewage systems where sanitary sewer is unavailable, county road right-of-way work, and county-regulated soil erosion or drainage activities.
Note: No countywide building permit exemption list applies because Wayne County is not acting as the general local building department for the listed municipalities. County permit exemptions depend on the specific county permit class, such as septic, soil erosion, or right-of-way work.
- Septic application
- Parcel ID
- Survey or legal description
- Accurate plot plan
- Documentation of permanent street address for new construction
- Applicable fees
- Building code
- County pages do not present Wayne County as the general enforcing agency for building code permits in the listed jurisdictions; county permits are ancillary to local code permits.
- Permit validity
- Septic and well permits are valid for one year from issuance; rewrite fee applies after expiration.
- Owner-builder
- County septic process allows owner or designated representative to coordinate the soil evaluation and permit application.
- Contractor requirements
- Building inspection agencies in Wayne County require proof of municipal sewer connection or sewage permit before building permits can be issued; local building license rules still apply through the local enforcing agency.
Source: Wayne County Department of Public Services and Environmental Health ↗
Application process
Typical processing: Septic review generally 3 to 5 business days after complete application; site or soil evaluations usually scheduled within 5 business days and up to 10 business days during peak season.
- 01 Determine whether the needed approval is a county road permit, soil erosion permit, drainage or stormwater permit, or septic or onsite sewage permit.
- 02 For septic work, submit complete permit application, parcel information, survey, plot plan, and fee to Wayne County Environmental Health.
- 03 For county road right-of-way or construction work, apply through the Wayne County Permit Office and engineering review process.
- 04 County staff reviews materials and requests additions if needed.
- 05 Pay assessed fees and receive permit.
- 06 Schedule required county inspections; separate local building permit must still be obtained where a local enforcing agency requires it.
Typical processing time: Septic review generally 3 to 5 business days after complete application; site or soil evaluations usually scheduled within 5 business days and up to 10 business days during peak season.
Source: Wayne County Department of Public Services and Environmental Health ↗
Fee schedule
Wayne County building permit fees
County pages direct applicants to submit the application with fee; contact the county office for current amounts before filing.
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
Required inspections
Scheduling and sequence
- Wayne County Permit Office (phone)
- Inspection hours
- County office hours; septic inspections are generally prompt, usually within 24 hours excluding weekends and holidays.
Typical sequence: For septic systems, drainfield excavation, sand backfill, drainfield placement, tank or pump setting if applicable, and final earth cover or grading review.
Source: Wayne County Department of Public Services and Environmental Health ↗
Frequently asked
Common questions about unincorporated Wayne County permits
01 Do I need a building permit in unincorporated Wayne County, MI? ▸
02 How much does a building permit cost in unincorporated Wayne County, MI? ▸
03 How do I apply for a building permit in unincorporated Wayne County, MI? ▸
04 How long does it take to get a building permit in unincorporated Wayne County, MI? ▸
05 How do I schedule a building inspection in unincorporated Wayne County, MI? ▸
Educational reference. Permit rules and fees change — confirm current requirements directly with Wayne County Department of Public Services and Environmental Health before applying. Jaspector is not legal advice.