Wayne County, MI - 2026 Building Permit Guide

Permit Authority

For unincorporated or sewerless areas, Wayne County directly handles septic or onsite sewage permitting, soil erosion and sedimentation control, drainage or stormwater related approvals, and county road right-of-way construction permits.

Department

Wayne County Department of Public Services and Environmental Health

Address

Environmental Services, 3600 Commerce Court, Building E, Wayne, MI 48184; Permit Office, Department of Public Services, Wayne County, Michigan

Phone

Environmental Health 734-727-7400; Permit Office 734-326-3936

Website

https://www.waynecountymi.gov/Departments/PublicServices/Engineering/Permit-Office

Online Permit Portal

Application Process

1. Determine whether the needed approval is a county road permit, soil erosion permit, drainage or stormwater permit, or septic or onsite sewage permit.
2. For septic work, submit complete permit application, parcel information, survey, plot plan, and fee to Wayne County Environmental Health.
3. For county road right-of-way or construction work, apply through the Wayne County Permit Office and engineering review process.
4. County staff reviews materials and requests additions if needed.
5. Pay assessed fees and receive permit.
6. 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

General Requirements

Septic or onsite sewage systems where sanitary sewer is unavailable, county road right-of-way work, and county-regulated soil erosion or drainage activities.

Required Documents

• Septic application
• Parcel ID
• Survey or legal description
• Accurate plot plan
• Documentation of permanent street address for new construction
• Applicable fees

Permit validity

Septic and well permits are valid for one year from issuance; rewrite fee applies after expiration.

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.

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.

Fees

Permit fee formula

Permit type specific.

Reinspection fee

Septic permit rewrites and site-visit related added charges may apply after expiration or changed conditions.

Payment note

County pages direct applicants to submit the application with fee; contact the county office for current amounts before filing.

Fees change. Verify current amounts at the official fee schedule.

Work That Does NOT Require a Permit

Contact the Wayne County Department of Public Services and Environmental Health to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

• Wayne County Permit Office (phone)

Inspection hours

County office hours; septic inspections are generally prompt, usually within 24 hours excluding weekends and holidays.

Typical inspection sequence: For septic systems, drainfield excavation, sand backfill, drainfield placement, tank or pump setting if applicable, and final earth cover or grading review.

Additional Resources

• 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.
• Environmental Services
• Septic/Onsite Sewage
• Permit Office
• License lookup guide: Michigan Contractor License Requirements
• Contract template: Michigan Homeowner-Contractor Agreement
• Michigan hub: Michigan Contractor License & Permit Hub

Frequently Asked Questions

Wayne County Building Permit FAQ

Do I need a building permit in unincorporated Wayne County, MI?

Septic or onsite sewage systems where sanitary sewer is unavailable, county road right-of-way work, and county-regulated soil erosion or drainage activities.

How much does a building permit cost in unincorporated Wayne County, MI?

Fees are calculated as: Permit type specific..

How do I apply for a building permit in unincorporated Wayne County, MI?

1. Determine whether the needed approval is a county road permit, soil erosion permit, drainage or stormwater permit, or septic or onsite sewage permit. 2. For septic work, submit complete permit application, parcel information, survey, plot plan, and fee to Wayne County Environmental Health. 3. For county road right-of-way or construction work, apply through the Wayne County Permit Office and engineering review process. 4. County staff reviews materials and requests additions if needed. 5. Pay assessed fees and receive permit. 6. Schedule required county inspections; separate local building permit must still be obtained where a local enforcing agency requires it.

How long does it take to get a building permit in unincorporated Wayne County, MI?

Typical processing time is 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..

How do I schedule a building inspection in unincorporated Wayne County, MI?

Inspections can be scheduled via: Wayne County Permit Office.