per lot as defined in § 154.004; (2) In Residential District R-1, one two-family dwelling per lot, the part of which must be joined by a conventional room whose width is at least two-thirds of its
Read it in the chapter →Land use · Irvington, Virginia
two-family dwelling
Named in 2 of this ordinance’s zoning districts.
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 Irvington’s own text settles what this covers.