While the side discussion has been interesting we really don’t need to debate the OPs comment much since the definition of substandard is clear and easily accessible. Not many of our cruising boats would fall into this definition and if they did would probably be talked about in the other thread on derelict boats
Federal preference: Substandard housing.
(a) When unit is substandard. (See § 5.415(a)(2) and (c)(2)(ii) for applicability of this section to the Section 8 Certificate/Voucher, Project-Based Certificate, Moderate Rehabilitation programs and the public housing program.) A unit is substandard if it:
(1) Is dilapidated;
(2) Does not have operable indoor plumbing
(3) Does not have a usable flush toilet inside the unit for the exclusive use of a family
(4) Does not have a usable bathtub or shower
inside the unit for the exclusive use of a family
(5) Does not have electricity, or has inadequate or unsafe electrical service
(6) Does not have a safe or adequate source of heat;
(7) Should, but does not, have a kitchen; or
(8) Has been declared unfit for habitation by an agency or unit of government
(b) Other definitions—(1) Dilapidated unit. A housing unit is dilapidated if:
(i) The unit does not provide safe and adequate shelter, and in its present condition endangers the health
, or well-being of a family; or
(ii) The unit has one or more critical defects, or a combination of intermediate defects in sufficient number or extent to require considerable repair or rebuilding. The defects may involve original construction, or they may result from continued neglect or lack of repair or from serious damage to the structure.