Planning Commission will consider Tuesday a transitional housing project on a vacant lot at 23652 Newhall Ave. Family Promise of Santa Clarita Valley proposed the four 812-square-foot, single-story two-bedroom and one-bathroom apartments for single mothers and their families. A second proposed building of 2,834 square feet on the formerly city-owned property would house four offices for Family Promise staff, one bedroom and three bathrooms for supportive, transitional housing, a communal kitchen and communal living space, according to a staff report. The proposed units are considered affordable housing, meaning a family must earn no more than 80% area median income to be a tenant.