Who signs off on a new home in the Palisades
LADBS reviews the construction drawings and issues the building permit. Plans go in through ePlanLA, the City's online plan check system, and LADBS offers a preliminary plan check meeting with a plan check engineer before you submit. On a coastal or hillside lot I recommend that meeting, because it surfaces questions while they are still cheap to answer.
City Planning handles the reviews that come before the building permit. On a lot inside the Coastal Zone, a project can need a Coastal Development Permit under Los Angeles Municipal Code Section 13B.9.1. A City hearing notice shows a Palisades lot in the Dual Permit Jurisdiction Area needing one for a garage converted to an ADU, so check your parcel before design starts. The Pacific Palisades Commercial Village and Neighborhood Specific Plan adds its own rules on the parcels it covers. I read every lot on ZIMAS, the City's zoning map, before anyone draws a line.
Hillside lots add another layer. The City's Baseline Hillside Ordinance governs single-family zones in the mapped Hillside Area, and LADBS determines whether it applies to your project. Street width matters too: for a new home on a lot fronting a Substandard Hillside Limited Street with a roadway narrower than 20 feet, the code withholds the building and grading permits unless the project is approved under Section 12.24 X.21.