Roofing Requirements for Historic Properties in Michigan

Historic roofing projects in Michigan occupy a distinct regulatory zone where preservation standards, state building codes, and local landmark ordinances intersect. Properties listed on the National Register of Historic Places or designated under Michigan's State Historic Preservation Office framework face requirements that go beyond standard residential or commercial roofing compliance. Understanding how these layers interact is essential for property owners, roofing contractors, and preservation professionals operating anywhere in the state.

Definition and scope

A historic property, for roofing purposes, is one that carries formal designation at the federal, state, or local level — or one that falls within a designated historic district. Three primary designation categories govern Michigan properties:

1. National Register of Historic Places — Administered by the National Park Service under the National Historic Preservation Act of 1966 (16 U.S.C. § 470), this designation does not automatically restrict private alterations but triggers review requirements when federal funds or licenses are involved.
2. State Historic Preservation Office (SHPO) designation — The Michigan SHPO, housed within the Michigan State Housing Development Authority, administers the state's preservation program and coordinates with federal review processes.
3. Local landmark or historic district designation — Local Historic District Commissions (HDCs), established under Michigan Public Act 169 of 1970, hold jurisdiction over exterior alterations in locally designated districts, including roofing.

Scope limitations: This page applies to Michigan-specific regulatory frameworks and does not cover preservation requirements in other states. Properties that are neither federally listed, state-designated, nor locally landmarked fall outside historic preservation review — though standard Michigan roofing building codes and permit requirements still apply. Federal Tax Credit programs for certified historic structures are referenced here for framing but are not analyzed as financial products.

How it works

Roofing work on a historic property typically follows a layered approval pathway rather than a single permit submission.

Local HDC review is the most common first step for properties within a locally designated district. Under Public Act 169, any exterior alteration — including full roof replacement, re-roofing, or significant repair — requires a Certificate of Appropriateness (COA) from the local HDC before a building permit is issued. HDCs evaluate proposed work against the Secretary of the Interior's Standards for Rehabilitation, which emphasize preserving historic materials and character-defining features.

SHPO review becomes mandatory when a project involves federal or state funding, federal licensing, or when a property owner seeks the Federal Historic Tax Credit, which the IRS and National Park Service jointly administer. The SHPO reviews proposed work for consistency with preservation standards and issues determinations of eligibility or effect.

Building permit compliance still applies in full. Historic designation does not exempt a property from the Michigan Building Code or from Michigan roofing permit process requirements. Inspectors from the local building department conduct structural and code compliance inspections independently of any HDC approval.

Material selection is frequently the central point of conflict in historic roofing projects. The Secretary of the Interior's Standards prioritize in-kind replacement — matching original materials such as slate, clay tile, standing-seam metal, or wood shingle — over substitution with modern asphalt or synthetic alternatives. For a broader comparison of material performance in Michigan's climate, the Michigan roofing materials guide addresses durability benchmarks across material categories.

Common scenarios

Scenario 1: Full replacement on a locally designated residential property. A homeowner replaces a deteriorated slate roof in a locally designated historic district. The process requires COA approval, selection of replacement slate or an approved substitute documented to match original character, building permit issuance following COA, and final inspection by both the building department and sometimes an HDC representative.

Scenario 2: Re-roofing with asphalt shingles on a National Register property (no federal funds). Without federal funds or licenses involved, National Register listing alone does not block the use of asphalt shingles. However, if the property is also locally designated, HDC review applies. The regulatory context for Michigan roofing page details how federal and local frameworks interact in these layered scenarios.

Scenario 3: State historic tax credit projects. Michigan's Historic Tax Credit program, administered through the Michigan Strategic Fund, requires SHPO certification of both the property and the scope of work. Roofing specifications submitted under this program must conform to the Secretary of the Interior's Standards at the Part 2 (proposed work) and Part 3 (completed work) stages.

Scenario 4: Emergency repairs. Most local HDC ordinances include emergency provisions permitting temporary protective measures without prior COA approval, provided the owner notifies the HDC within a defined window — typically 10 to 30 days — and follows up with a full COA application for permanent repairs.

Decision boundaries

The central distinction in historic roofing compliance is whether preservation review applies at all. The following criteria determine which oversight path governs a project:

• Federal funds or licenses involved? → SHPO Section 106 review required under the National Historic Preservation Act.
• Property in a locally designated historic district? → Local HDC Certificate of Appropriateness required before permit issuance.
• State or federal tax credits being claimed? → SHPO Part 1/Part 2/Part 3 certification process applies.
• National Register listed only, no local designation, no federal nexus? → No preservation review required; standard Michigan Building Code and michigan-roofing-permit-process rules govern.

A full overview of Michigan's roofing service sector, contractor categories, and licensing structures is accessible from the Michigan Roofing Authority index, which organizes the full reference framework covering residential, commercial, and specialty roofing contexts statewide.

Safety standards applicable to roofing work — including fall protection under OSHA 29 CFR 1926 Subpart M and load-bearing requirements relevant to heavier historic materials like slate — remain in force regardless of historic designation status. Snow load calculations for historic structures in Michigan often require structural engineering review given that original roof framing may predate modern Michigan roof snow load requirements.

References

• Michigan State Historic Preservation Office (SHPO) — State Historic Preservation Authority, MSHDA
• Secretary of the Interior's Standards for Rehabilitation — National Park Service
• National Historic Preservation Act of 1966, 16 U.S.C. § 470 — U.S. Government Publishing Office
• Michigan Public Act 169 of 1970 (Local Historic Districts Act) — Michigan Legislature
• Michigan Construction Codes, Bureau of Construction Codes — Michigan Department of Licensing and Regulatory Affairs (LARA)
• OSHA 29 CFR 1926 Subpart M — Fall Protection — U.S. Occupational Safety and Health Administration
• Federal Historic Tax Credit Program — National Park Service and Internal Revenue Service