Rancho Palos Verdes ADU contractor.

Under the landslide regulation ordinance RPV adopted on 19 August 2025, new residential construction — expressly including additions — is prohibited in the covered zones: Portuguese Bend, the Zone 2 Monks and Non-Monks lots, and the properties added in 2025. Owners there may replace, restore, and repair development within its existing footprint, and a parcel can apply for exclusion through a defined process with strict criteria. Everywhere else in the city, ADUs are buildable. That is why our feasibility walk starts with the map, not the floor plan — five minutes of parcel screening saves owners months of drawing something the city cannot approve.

The honest answer: it depends on what you build and what your slope demands. A garage-conversion ADU, a detached new-build, and a junior ADU carry different price tags, and on Peninsula hillsides the geotechnical report, foundations, and drainage do real work in the budget. We don't quote a number before we've walked the lot — on the free consult you get an honest range and a design that works backward from it.

RPV's single-family height limit is 16 feet by right; taller needs a Height Variation Permit, which is not a path an ADU wants to depend on. The same number answers the view question: under Proposition M, the city's view-preservation law, a structure below 16 feet does not block a protected view. So we design RPV ADUs single-story and low — the lot's slope, not the code, becomes the real design driver. On typical 13,000-square-foot RPV lots there is usually room; what decides placement is the geology. This is active-landslide country, and a geotechnical investigation is the starting point of an RPV project, not a late step.

RPV is one of the few cities that publishes its plan-check windows: the first submittal takes up to 10 business days once the project status is accepted, and subsequent submittals up to 5. Review is performed by Transtech, the city's third-party plan-check service, with corrections and approvals by email; submittal runs through the city's online portal. Building & Safety is at 30940 Hawthorne Blvd, (310) 544-5280 — Monday–Thursday 7:30am–5:30pm, Friday 7:30am–4:30pm, closed 12:00–1:00pm daily. For what the counter actually asks, read our field notes on ADU permits in Rancho Palos Verdes.

The expensive failures on Peninsula ADUs happen where design meets geology and where drawings meet the landslide map. Because the people who draw your ADU are the people who build it, those gaps close: one contract, one schedule, one CSLB Class A/B license (#375508). Our Peninsula work runs from the South Shores Home in Rolling Hills Estates to the ground-up Valmonte Home in Palos Verdes Estates, and the same team serves the rest of Rancho Palos Verdes, Palos Verdes Estates, and San Pedro.

Start with a free consultation — and if you're not sure whether your parcel touches the landslide regulation area, that's exactly the question to bring.