Can you build a PSL Modular unit in Kentucky?

The Department of Housing, Buildings and Construction through the Kentucky Industrialized Building System (KIBS) program (815 KAR 7:130). The manufacturer submits construction documents for state model approval, and each unit is inspected at the factory by an approved third-party agency that applies an M-Seal — a unique serialized seal indicating the building was constructed in substantial compliance with the Kentucky Building Code or Residential Code. With the M-Seal, your local jurisdiction permits the site work without re-reviewing the structure.

No. A 2025 bill, HB 576, would have made at least one ADU a permitted use in all residential zones without local permitting/review, but it stalled and isn't law. So ADUs remain local. Louisville generally allows one ADU per single-family lot (and up to two in certain multifamily districts); Lexington approved ADUs up to about 800 sq ft on urban single-family lots in 2021, though its zoning has been in flux. Confirm your city's current rule.

Local ordinances commonly cap an ADU around 800 sq ft, or about 30% of the primary dwelling (whichever is greater in some places), and some jurisdictions require the owner to live on-site in either unit. Because it's all local, check your specific city or county for size, setback, parking, and occupancy rules.

Wind and seismic, region-depending. Tornado and high-wind events are a statewide consideration; eastern Kentucky adds snow at elevation; and far-western Kentucky around Paducah sits in the New Madrid Seismic Zone, where seismic design is a real factor. PSL Modular sets the structural spec from your site coordinates.

Yes. Logistics and manufacturing growth (Louisville's shipping hub, auto plants) plus rural and eastern-Kentucky housing needs make multi-unit and single-unit modular attractive — KIBS-approved units arrive fast and engineered for Kentucky's wind and (in the west) seismic.