ADU Surveys in Oakland, CA

Oakland writes the strongest ADU survey triggers in the East Bay directly into its application checklist. A line and/or topographic survey — prepared by a California licensed land surveyor, wet-stamped, and no more than three years old — is required whenever a new or replacement footprint comes within 3 feet of a property line, or whenever the lot slopes 20 percent or more. At the building-permit step, the checklist adds that a boundary survey is required if the structure appears within 10 feet of a property line — which describes nearly every backyard ADU designed to the state's 4-foot setbacks. In the flatlands of West Oakland, Fruitvale, and East Oakland, that boundary trigger is usually the operative one; in Montclair, Rockridge, and the upper hills, the 20-percent slope trigger takes over and brings existing and proposed contours, cross-sections, and a grading plan with it.

The checklist's site-plan requirements go beyond property lines: retaining walls need top and bottom elevations, trees need trunk diameters — including neighbors' trees within 10 feet of construction — and creekside parcels need a Creek Protection Permit under the municipal code. Our laser-scanned survey approach captures all of it in one site visit: boundary evidence, structures, walls with elevations, tree trunks with measurable diameters, and a dense ground surface that produces defensible contours for hillside plan check. Fire-rebuild lots in the hills carry engineered slopes and Alquist-Priolo fault-zone scrutiny on top of the standard requirements, and we design the survey scope around what your specific parcel will face.

Deliverables are a stamped site plan base map and layered DWG your designer draws the ADU on directly, with property corners staked so the 4-foot setback is real on the ground. Where terrain drives the project, see our Oakland topographic surveys; for the combined boundary-plus-terrain scope most hillside ADUs need, our site plan surveys cover both in one mobilization.