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Codes, exemptions & field inspections

Build to the adopted code. Verify every exception.

This guide translates the available agency record into a preconstruction checklist for structural scope, minor work, and inspection release. The adopted code and the issuing official control when a field condition is disputed.

Regulatory framework

The code baseline for Wayne County.

Wayne County does not publish a countywide general building-inspection program. The current Michigan LARA jurisdiction list assigns building, electrical, mechanical, and plumbing enforcement among local cities/townships/villages and the state, with Detroit and other municipalities maintaining their own agencies; verify the address-specific authority before applying. Applicable statewide codes include the 2021 Michigan Building Code, 2015 Michigan Residential Code for one- and two-family dwellings while the proposed 2021 residential update is stayed, 2021 Michigan Mechanical and Plumbing Codes, 2023 National Electrical Code with Michigan amendments, and current Michigan energy and rehabilitation provisions. Wayne County separately administers road, drain, stormwater, and certain soil-erosion construction approvals.

Inspection lane

For county construction permits, the Permit Office reviews plans and inspects work within county road rights-of-way and township subdivisions; contact (734) 858-2774 or the DPS engineering contact at (734) 595-6504. General building, electrical, mechanical, and plumbing inspections must be scheduled with the applicable municipal building department or Michigan LARA through its permit system.

Minor-work playbook

Understand what may be exempt—and what is not.

N/A for countywide building work; exemptions depend on the local enforcing municipality and applicable Michigan code. Wayne County construction permits are required for work in a county road right-of-way, county drain, county-owned land, or qualifying stormwater project, while ordinary building permits are handled locally or by the state.

Field rule

A permit exemption generally addresses one narrow construction trigger. It does not automatically waive zoning, land-use, floodplain, shoreline, fire, energy, electrical, utility, septic, or right-of-way requirements. Obtain written confirmation when the project involves a new structure, structural alteration, change in occupancy, or concealed work.

Inspection pipeline

Keep the work visible at every release point.

  1. 1

    Request with lead time

    For county construction permits, the Permit Office reviews plans and inspects work within county road rights-of-way and township subdivisions; contact (734) 858-2774 or the DPS engineering contact at (734) 595-6504. General building, electrical, mechanical, and plumbing inspections must be scheduled with the applicable municipal building department or Michigan LARA through its permit system.

  2. 2

    Preserve access

    Do not cover framing, reinforcement, wiring, piping, damp-proofing, or life-safety work until the required inspection has been completed and documented.

  3. 3

    Close the record

    Retain the approved plans, inspection approvals, correction responses, and final certificate or occupancy release with the property file.

Contractor verification

Verify the builder before the contract is signed.

Use the state licensing system to verify active registration, trade credentials, bond status, and liability coverage where available. Match the legal business name to the proposal and permit application.

Verify contractor ↗

Planning reference

Keep the parcel rules beside the building plans.

A building permit is only one part of statutory compliance. Check the local zoning, ordinance, map, or land-use reference before finalizing setbacks, height, lot coverage, access, drainage, or accessory structure placement.

No verified planning reference link is listed; ask the agency for the parcel-specific source.

Source trail

Official sources for this profile

Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.

Agency websiteOpen official source ↗Application instructionsOpen official source ↗Fee scheduleOpen official source ↗Contractor license lookupOpen official source ↗

Project questions

Frequently asked questions for Wayne County

Who handles permitting for this jurisdiction?

This record is marked Municipal Fallback. Confirm whether a city, state agency, or other local authority controls the parcel before filing.

How should I begin an application?

Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact Wayne County DPS Permit Office: (734) 858-2774; DPS Engineering permit-plan-review contact: (734) 595-6504.

How long might review take?

N/A for general building permits; local review varies. Wayne County's construction-permit review requires a complete application, at least three plan sets, applicable checklists, and plan-review payment, with timing dependent on engineering review and project scope.

How are inspections scheduled?

For county construction permits, the Permit Office reviews plans and inspects work within county road rights-of-way and township subdivisions; contact (734) 858-2774 or the DPS engineering contact at (734) 595-6504. General building, electrical, mechanical, and plumbing inspections must be scheduled with the applicable municipal building department or Michigan LARA through its permit system.

Which codes and exemptions should I review?

Wayne County does not publish a countywide general building-inspection program. The current Michigan LARA jurisdiction list assigns building, electrical, mechanical, and plumbing enforcement among local cities/townships/villages and the state, with Detroit and other municipalities maintaining their own agencies; verify the address-specific authority before applying. Applicable statewide codes include the 2021 Michigan Building Code, 2015 Michigan Residential Code for one- and two-family dwellings while the proposed 2021 residential update is stayed, 2021 Michigan Mechanical and Plumbing Codes, 2023 National Electrical Code with Michigan amendments, and current Michigan energy and rehabilitation provisions. Wayne County separately administers road, drain, stormwater, and certain soil-erosion construction approvals. N/A for countywide building work; exemptions depend on the local enforcing municipality and applicable Michigan code. Wayne County construction permits are required for work in a county road right-of-way, county drain, county-owned land, or qualifying stormwater project, while ordinary building permits are handled locally or by the state.

Field sequencing matters

The inspector needs to see the work at the right moment.

Code compliance is not only a plan-review exercise. Footings, reinforcement, framing, fireblocking, wiring, piping, insulation, weather protection, and life-safety systems each have points where the work must remain accessible. Build the inspection calendar into the trade schedule instead of treating it as a final administrative step.

When a project qualifies for a narrow minor-work exemption, keep a written explanation of why it qualifies and confirm that related zoning, utility, fire, energy, or environmental rules do not create a separate approval requirement.

Closeout file

Keep the approved plan set, inspection approvals, correction responses, contractor license verification, final certificate, and any occupancy release together. A clean record protects the owner, builder, lender, insurer, and future buyer.