A quiet residential street with a new ADU behind one of the homes
Rancho Palos Verdes, CA

ADU Company in Rancho Palos Verdes - Plans, Permits & Build, One Fixed Price

We handle the design, the engineering, and the city permit, then build it. One contract, one crew, one accountable point of contact. Free feasibility check on your lot before you commit.

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A new two-story ADU over a garage
A compact kitchen inside a new ADU
A new modern ADU with wood cladding
The bedroom inside a new ADU
The bathroom inside a new ADU
A new sunroom addition with three walls of windows
A second-story addition that matches the existing roofline
A second-story addition with a balcony, matched to the original house
Every project starts with

A free site visit, a check of what your lot allows and a written, line-item price.

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ADU Company in Rancho Palos Verdes, CA

Rancho Palos Verdes is one of the more challenging places in Los Angeles County to build an ADU, and that’s exactly why the work here is different. The hillside lots, the coastal setbacks, the geotechnical requirements, and the city’s specific zoning rules all shape how a project gets designed and priced. We build ADUs and home additions throughout Rancho Palos Verdes with a written price before any work starts and a 365-Day Done Right Promise on every project. If you’re researching costs, call (903) 568-7222 and we’ll walk you through what applies to your property.

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Why Rancho Palos Verdes Homes Are Different

The living room inside a new ADU

Rancho Palos Verdes sits on a peninsula with steep grades, expansive soils, and coastal exposure that most general contractors never deal with. A flat-lot ADU that works in Torrance doesn’t translate directly to a hillside parcel above Abalone Cove or near the switchbacks off Palos Verdes Drive South. Many homes here were built between the 1950s and 1980s, which means older foundations, deferred drainage issues, and floor plans that need careful structural work before an addition can tie in.

The city also has its own ADU ordinance with specific setback and height limits, plus hillside grading rules that can add geotech review to a project. Some neighborhoods fall under HOA jurisdiction with their own architectural review process on top of city permits. That’s not a roadblock – it just means the plan has to be right the first time. That’s why we put the price and the scope in writing before any work begins, and why we coordinate with engineers who know the Palos Verdes Peninsula soil conditions.

Our Main Rancho Palos Verdes Services

Most homeowners in Rancho Palos Verdes call us for one of two reasons: they want a detached ADU they can rent or move family into, or they’re out of space in the main house and need a home or room addition. Here’s what each looks like on the Peninsula.

ADU Builders in Rancho Palos Verdes

Detached ADUs on Palos Verdes hillsides come with specific foundation and drainage requirements, and the slope of your lot has a direct impact on the structural approach and the price. We build with prefab systems from Abodu, Cover, and Dvele, which can shorten the on-site build window significantly compared to stick framing. Whether you’re planning a rental unit above Western Avenue or a family suite with ocean views, the first step is a site walk to understand your setbacks and grade. ADU Builders in Rancho Palos Verdes covers the full process.

ADU Builders in Rancho Palos Verdes

Home Addition Contractor in Rancho Palos Verdes

A home addition in Rancho Palos Verdes usually means extending out, and on a sloped lot that extension often needs pier-and-grade-beam support or retaining work. We handle the full scope: structural engineering, foundation, framing, roofing tie-in, and finishes. The goal is an addition that feels like it was always part of the house, not a box bolted onto the side. Home Addition Contractor in Rancho Palos Verdes explains what to expect from start to finish.

Home Addition Contractor in Rancho Palos Verdes

Room Addition Contractor in Rancho Palos Verdes

One extra bedroom or a small office can be done as a room addition, which is often a lighter lift than a full wing. These projects still require permits and structural review, but the scope is tighter and the timeline shorter. We see a lot of these on the flatter pockets of Rancho Palos Verdes where the lot gives you room to build out from an existing exterior wall. Room Addition Contractor in Rancho Palos Verdes has the details and pricing breakdown.

Room Addition Contractor in Rancho Palos Verdes
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What happens when you call

  1. 1
    A real person answersNo phone trees - you reach a local pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched.
  3. 3
    A background-checked tech heads outLicensed & insured, dispatched right away.
  4. 4
    You approve before work beginsNothing starts until you say go.

Brands We Service in Rancho Palos Verdes

We’re authorized to build with Abodu, Cover, Dvele, and Mighty Buildings, which means you can research these manufacturers independently before committing. Each has different strengths for hillside sites, coastal exposure, and pre-permitted designs. Our brands page explains the differences and what to look for.

Pricing for ADU Company in Rancho Palos Verdes, CA

Service Typical range in Rancho Palos Verdes
Detached ADU (prefab, 400-500 sq ft) $180,000 – $260,000
Detached ADU (prefab, 600-800 sq ft) $240,000 – $340,000
Detached ADU (custom site-built, 800-1,000 sq ft) $310,000 – $420,000
Garage conversion ADU (400-600 sq ft) $160,000 – $230,000
Attached ADU / JADU (350-500 sq ft) $140,000 – $210,000
Home addition (400-600 sq ft) $200,000 – $300,000
Home addition (600-900 sq ft) $280,000 – $400,000
Room addition (single room, 150-300 sq ft) $95,000 – $160,000
Site prep / grading / retaining for sloped lots $25,000 – $65,000

What pushes the price up in Rancho Palos Verdes is almost always the site work: slope stabilization, retaining walls, drainage, and geotech review can add $25,000 or more before framing even starts. That’s why our written price covers the full scope up front, including site prep, so there are no surprises at the door.

Neighborhoods We Serve in Rancho Palos Verdes

A small deck outside a new ADU

We cover all of Rancho Palos Verdes, from the ocean-facing streets off Palos Verdes Drive South up to the flatter residential pockets near Crest and Miraleste.

  • Portuguese Bend
  • Abalone Cove area
  • Vista Pacifica
  • Monte Malaga
  • Miraleste

Response times across the city run about the same as the rest of the South Bay, though the hillside streets can add a few minutes depending on where you are.

Service Area – Cities Near Rancho Palos Verdes

Our crews also serve the surrounding South Bay communities, so if you’re just outside the Rancho Palos Verdes boundary we can likely still help. We work regularly in Torrance, CA, Lomita, CA, Redondo Beach, CA, and Lakewood, CA.

Serving Rancho Palos Verdes, CA - Our Local Coverage Area

We’re based in the Rancho Palos Verdes area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.

FAQs About ADU Company in Rancho Palos Verdes

A single-story rear room addition with tall windows and a new patio

Ready to get started? Free estimates · Free on-site estimates response in Rancho Palos Verdes
Call (903) 568-7222

What happens when you call

  1. 1
    A real person answersNo phone trees - talk to a local adu pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What Rancho Palos Verdes Customers Say

★★★★★ 5.0 from 3+ reviews

"Booked a consult online and met the project manager two days later. Weekly progress updates arrived by text with photos. ADU finished on schedule."

- Hannah W.

"Clean, quiet crew. They respected the neighbors, kept noise to working hours, and swept the driveway every evening."

- Hope C.

"Communication was the best part. I always knew what was happening that week without having to ask."

- Dolly N.

How It Works in Rancho Palos Verdes

Getting your adu handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your adu needs and we provide an upfront, transparent quote - no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Rancho Palos Verdes - typically within 30-60 minutes, with parts stocked on the truck.

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

More ADU services in Rancho Palos Verdes

Every build below starts the same way: a free site visit and a written price.

Getting started with Benson

Every project starts with a conversation and a written price. Here is how to take the first step.

A project lead measuring a backyard ADU site with the homeowner

Free site visit

A project lead walks the lot with you, checks what it allows and hands you a written, line-item price. No obligation.

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What we promise on every job, written down, with the terms spelled out before any work starts.

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