Roofing in Dayton, Ohio

Not required

Not required

SET BY STATE RULE, with Dayton's own codified local layer now read in full and disclosed because it disagrees with the city's current administrative practice. Ohio regulates one-, two-, and three-family dwelling construction through a single statewide code, the Residential Code of Ohio (RCO), adopted by the state Board of Building Standards under Ohio Revised Code Chapter 3781 and codified in Ohio Administrative Code Chapter 4101:8. The current edition is the "2019 Residential Code of Ohio," based on the 2018 International Residential Code, as subsequently amended effective March 1, 2024 and April 15, 2024. Ohio has NOT moved to a newer IRC base edition as of this verification date. Dayton's own city website (daytonohio.gov/194/Building-Codes) independently confirms the city currently enforces the "2019 Residential Code of Ohio (This version of the residential code became effective July 1, 2019.)" for residential structures and the "2024 Ohio Building Code" for commercial structures. Dayton's codified local building chapter -- Code of Ordinances Title XV, Chapter 153, "Unified Building Code" -- was fetched and read in full via the Municode API (Chapter 153 currency confirmed against the library's own banner text: codified through Ordinance No. 32180-26, passed April 1, 2026). That codified text disagrees with the city's own webpage above. Section 153.01(A)(2) reads, without amendment since Am. Ord. 30111-02 (passed June 5, 2002): "all of the provisions of the 1999 Ohio Residential Code For One, Two, and Three Family Dwellings, including all amendments effective as of the date of adoption of this chapter, are hereby adopted" -- so the codified text on its face names the 1999 edition of the state's residential code, frozen as of the 2002 amendment, for one-, two- and three-family dwellings, in contrast with the Ohio Building Code half of the same section, which the ordinance in the same sentence adopts "including all amendments hereafter adopted by the State of Ohio" (a floating reference, commercial structures only). The same subsection (A)(1) goes on to adopt "all rules and regulations now and hereafter adopted pursuant to state law"; the Residential Code of Ohio is itself a rule adopted under state law (Ohio Revised Code 3781.10), and whether that clause carries the current RCO into the codified text alongside the fixed (A)(2) reference is not decided here. Section 153.03, "Modifications to the 1999 Ohio Residential Code," was read in full: it replaces only Chapter 1 (Sections 101-119, all administrative -- title, scope, board of appeals, permits-and-inspections procedure, energy-conservation cross-reference) of that 1999 base "in their entirety," and touches nothing past Chapter 1. Across the whole of Chapter 153 (74 sections fetched and read in full): zero occurrences of "Chapter 9," "R905," "905.2," "1504," "UL 2218," "Class 4," "Class IV," "FM 4473," "hail," "shingle," "drip," or "sheath," and the one "roof" hit is inside the unrelated frame-inspection sequence (113.1.3). State framework, as context: Ohio Revised Code 3781.10(A)(2)(c), in its current text (effective September 30, 2025), provides that "In no case shall any local code or regulation differ from the state residential building code" for new residential construction or for the repair and alteration of existing residential buildings, unless the local rule addresses subject matter the state code does not address or is adopted under section 3781.01; whether that provision displaces the codified 1999 reference is a legal question this record does not answer. So Dayton's own codified ordinance adds no roofing-specific technical provision of its own. The field answers in this record state the 2019 Residential Code of Ohio: that is the code the state rule applies by its own terms to every one-, two- or three-family dwelling (RCO 101.2: "The provisions of the 'Residential Code of Ohio for One-, Two-, and Three-Family Dwellings' shall apply to ... every one-, two-, or three-family dwelling"), and the code the city's building codes webpage says it enforces. The codified 1999 reference in Section 153.01(A)(2) is disclosed above with its dates; this directory has not obtained the 1999 text, and whether that codified reference has any effect today is not decided here.

Dayton's Division of Building Inspection is at 371 W. Second St., Dayton, OH 45402 (One Stop Center, 2nd floor); general phone 937-333-3883, fax 937-333-4284; hours M-F 8:30 a.m.-4:30 p.m.; Chief Building Official Scott Adams ([email protected]). Per the Division's own Permit-Process FAQ, "The Building Inspection Division strives to review and provide comments, as appropriate, no later than 30 calendar days following the date of application," and "Three copies of the site plan, construction documents, and supporting information are to be submitted with the application." Permit-fee cost estimates go through 937-333-6794; form-completion problems go through 937-333-3979. Online applications were not yet available as of this verification; the city stated it is upgrading its permitting software. The Division's own "Inspection Procedures Bulletin" (3/2021) instructs applicants to "CALL FOR THE REQUIRED INSPECTIONS" at least 24 hours in advance and lists dedicated phone lines by trade (e.g., Structural 333-3897, Electrical 333-3881, Plumbing/Water/Gas/Sewer 333-3892, Mechanical 333-3980).