Does nfpa standards apply to single dwellings units in spanish?

Yes, many NFPA standards apply to single dwelling units in many jurisdictions. For example, NFPA 1 Fire Code, and NFPA 70A National Electrical Code Requirements for One-and Two-Family Dwellings may apply, among others.

Life Safety Code, NFPA 101, may apply to multi-residential dwellings such as apartment buildings and hotels.

The language for codes would be selected by the local jurisdiction.