underlying zoning is A-1, B-0, B-1, B-2, B-3, or OS: 1. Single-family or two-family dwelling units shall be permitted in association with permitted office or business use in the same building or on the same premises;
Read it in the chapter →Land use · Hanover County Unincorporated, Virginia
two-family dwelling
How this ordinance defines it
The operative definition is the local one. Codes routinely subdivide a category into tiers — “day care 2, family”, “group home 2” — and attach different permissions to each, so only Hanover County Unincorporated’s own text settles what this covers.