Which of the following is NOT a designated exemption for target housing built before 1978?

Single-family homes built before 1978 are not considered a designated exemption under lead safety regulations. While certain types of housing can be exempt from lead safety requirements, single-family homes do not fall under these exemptions.

In general, the designated exemptions include various housing types, such as elderly housing, zero bedroom units, and housing for disabled adults, which have been identified as not requiring the same lead hazard control measures as other housing types. This is because these categories often have specific characteristics or target populations that are less likely to be at risk for lead exposure.

Elderly housing typically caters to older adults who may not have young children living there, thereby reducing the risk of lead exposure. Zero-bedroom units, such as efficiency apartments or studios, often do not provide residential space for children. Housing for disabled adults may not be particularly designed for young families either.

In contrast, single-family homes can often be occupied by families with young children, making them subject to lead hazard control measures. Therefore, the classification of a single-family home means it cannot be exempt from lead safety regulations, as it poses a higher risk for lead exposure particularly to children.