Residential construction is governed by the most recent edition of the state promulgated and mandated Residential Code Ohio (RCO.)
101.2 Scope. The provisions of the "Residential Code of Ohio for One-, Two- and Three- Family Dewllings" shall apply to
the construction, alteration, movement, enlargement, replacement, repair, equipment, use and occupancy, location,
maintenance, removal, and demolition of every one-, two- and three-family dwelling, any appurtenances connected or
attached to such buildings or structures, or any accessory structures. No building or its equipment or accessories, to which the rules of the board apply shall be erected, constructed, or installed, except in conformity with the rules of the board.
- Manufactured home units constructed under "24 CFR part 3280," "Manufactured Home Construction and Safety Standards" and within the scope of the rules adopted by the Ohio Manufactured Home Commission. This exception does not apply to alterations of, additions to, or changes of occupancy of manufactured homes.
- Multiple single-family dwelling structures more than three stories in height and with more than three dwelling units.
- The structure of one-, two-, and three-family dwellings which are more than three stories in height shall comply with the structural requirements of the OBC or Section 106.5 of this code.
- Residential buildings attached to occupancies that are within the scope of the OBC shall comply with the requirements of the "OBC."
- Buildings or structures which are incident to the use for agricultural purposes of the land on which said buildings or structures are located, provided such buildings or structures are not used in the business of retail trade; for the purposes of this section, a building or structure is not considered used in the business of retail trade if fifty per cent or more of the gross income received from sales of products in the building or structure by the owner or operator is from sales of products produced or raised in a normal crop year on farms owned or operated by the seller (see Sections 3781.06 and 3781.061 of the Revised Code).
- Agricultural labor camps.
- Type A or Type B family day-care homes, except for the inspection required for licensure by the "Ohio Department of Jobs and Family Services (ODJFS)." This required inspection shall be conducted by the certified building department having jurisdiction in accordance with the inspection checklist found on the board of building standards website.
- Buildings or structures which are designed, constructed, and maintained in accordance with federal standards and regulations and are used primarily for federal and state military purposes where the U.S. Secretary of Defense, pursuant to 10 U.S.C. Sections 18233(a)(1) and 18237, has been acquired by purchase, lease, or transfer, and constructs, expands, rehabilitates, or corrects and equips, such buildings or structures as he determines to be necessary to carry out the purposes of Chapter 1803 of the U.S.C.
- Sewerage systems, treatment works, and disposal systems (including the tanks, piping, and process equipment associated with these systems) regulated by the legislative authority of a municipal corporation or the governing board of a county or special district owning or operating a publicly owned treatment works or sewerage system as stated in division (A) of Section 6111.032 of the Revised Code.
- Building sewer piping.