Flood exposure and manufactured homes
FEMA's fifth-edition flood-loss guidance records a concrete regulatory comparison: in Zone A, the lowest floor is generally required at or above the base flood elevation (BFE); in Zone V, the bottom of the lowest horizontal structural member must be at or above the BFE. For an existing manufactured-home park or subdivision, the NFIP can allow a replacement or substantially improved home on reinforced piers at least 36 inches above grade, but that exception does not apply to every site.
These are measured elevation thresholds in a national floodplain rule, not a damage-rate study. FEMA separately identifies depth, velocity, debris, waves, foundation design, elevation, and anchoring as damage drivers. A single elevation measurement cannot describe the hazard, and the 36-inch rule is limited by park history, substantial-damage status, expansion status, and the governing jurisdiction.
For park operations, a VA can build a lot-level register with flood zone, BFE, lowest-floor elevation, chassis or pier height, foundation type, tie-down evidence, storm date, and inspection status. Route placement or replacement decisions to the floodplain administrator and a qualified design professional. The evidence says what must be checked; it does not predict a claim amount or resident outcome.