Condo Conversions in Alameda, CA

Alameda’s flat street grid carries one of the Bay Area’s largest concentrations of Victorian houses, and a meaningful share of them were divided into two or three flats generations ago. Converting one of these buildings — or a TIC arrangement in one — into condominiums is a two-document process: a subdivision map under the Subdivision Map Act (a parcel map for four or fewer units, which covers most Alameda duplex and triplex projects) and a condominium plan under the Davis-Stirling Common Interest Development Act. The plan defines each unit as a bounded airspace, designates the common area, and assigns exclusive-use areas — in Alameda that often means the rear yard, a Victorian’s front porch, or tandem parking on a narrow original lot. Both documents record with the Alameda County Recorder after county surveyor review.

The technical challenge in Alameda is that these buildings are 120-plus years old and, along the bay-fill margins of the island, sit on ground mapped in liquefaction zones where long-term settlement is common. A condominium plan drafted from idealized rectangles will contradict a Victorian whose floors have racked and whose bay windows were added in three different decades. Our Trimble terrestrial laser scanner solves this in a single visit: we capture every flat, the shared halls and stairs, and the full exterior as a survey-grade point cloud, then draft the unit boundaries from measured surfaces. There are no return trips to chase a missed dimension, and the point cloud remains available for the HOA, lenders, and future remodel permits. Our 3D laser scanning page describes the deliverables in detail.

As elsewhere in the East Bay, step one is local: cities regulate condominium conversion differently, and Alameda’s own rules on converting existing rental units should be confirmed with the city before mapping begins. Once eligibility is settled, we run the boundary survey, map, and condominium plan as one package.