Construct substantial alterations & addition to convert one-family dwelling to two-family dwelling (Allow attached accessory dwelling unit (AADU) and detached accessory dwelling unit (DADU) to existing single-family residence per land use code. Construct substantial alterations & addition to convert one-family dwelling to two-family dwelling and construct (1) new one-family dwelling per plan. Review & process for (2) records under 7022050-CN)