Detached ADU Construction

New-construction detached ADUs in Los Angeles — from foundation to certificate of occupancy. Full-service design, permitting, and construction under one contract.

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4.9★Google Reviews
LicensedCA Contractor
200+ADUs Built
15+ YrsIn Business

About Our Team

Expert Detached ADU Builders in Los Angeles

We specialize exclusively in accessory dwelling units. Since 2009, our dedicated team has built over 200 custom detached backyard homes.

A detached ADU is a ground-up building project requiring excavation, foundation pours, framing, and long-run utility connections. General contractors often juggle these complex projects alongside commercial contracts. We focus solely on ADUs. We manage the entire process in-house, ensuring that our skilled crews deliver premium craftsmanship on your new guest house or rental property.

Learn About Our Team
ADU Build LA construction crew supervisor
ADU Build LA framing and carpentry team

What We Do

ADU Services from a Los Angeles Design-Build Team

From feasibility through final inspection, one ADU builder handles your full scope so timelines and costs stay clear.

ADU Plans & Design

Plan your project with dedicated ADU builders Los Angeles homeowners trust for faster approvals, buildability, and rental value.

01.

ADU Plans & Design

ADU Permits & Approvals

Our team acts as the expert ADU contractor Los Angeles cities work with daily, handling all submissions and correction responses.

02.

ADU Permits & Approvals

Detached ADU Construction

Build ADU space with one accountable team managing construction quality, schedule, and trade coordination from start to final inspection.

03.

Detached ADU Construction

Garage to ADU Conversion

Turn your garage into a legal rental unit with clear scope, practical ADU prices, and a faster path than most ground-up builds.

04.

Garage to ADU Conversion

Junior ADU (JADU)

Create a compliant Junior ADU inside your current footprint for a lower-cost entry point and flexible family or rental use.

05.

Junior ADU (JADU)

California ADU Grants & Financing

We help you check eligibility for the CalHFA $40,000 California ADU grant and pair it with the right construction loan for your project.

06.

California ADU Grants & Financing

Detached ADU Construction

Build a standalone detached accessory dwelling unit in Los Angeles. Our in-house crews manage custom design, LADBS permits, and complete ground-up construction.

07.

Detached ADU Construction

Prefab & Modular ADU Installation

Turnkey prefab ADU and modular construction in Los Angeles. We manage site engineering, foundations, crane installation, and utility hookups.

08.

Prefab & Modular ADU Installation

Our Construction Process

Self-Performed Trades With One Point of Accountability

We do not broker your project to unfamiliar subcontractors. Our construction crews build ADUs full-time. This guarantees consistent quality, predictable schedules, and a project manager who knows your build from day one.

  • Dedicated project manager assigned at contract signing
  • Weekly written progress updates throughout the build
  • Self-performed core trades, with no hand-offs to unknown crews
  • All work inspected by LADBS at every required phase
  • Certificate of occupancy obtained before project closeout
  • 1-year workmanship warranty on all completed construction
200+
ADUs Built
Across Los Angeles County
15+
Years Building ADUs
Every type & size
4.9★
Google Rating
From verified homeowners
1yr
Warranty Included
On all completed work

Build Process

Building Your Detached ADU from the Ground Up

From site prep to final paint, our self-performed trades build your ADU with precision, quality craftsmanship, and clear communication.

01

Site Prep

We grade the site, dig utility trenches, run primary sewer and electrical lines, and pour the concrete foundation.

02

Framing & Envelope

We frame the walls and roof structure, install energy-efficient windows, and apply weatherproofing and roofing.

03

Rough-Ins

Our in-house trades install plumbing lines, electrical wiring, and the high-efficiency HVAC system.

04

Finishes

We insulate, install drywall, paint, fit cabinetry, lay flooring, mount fixtures, and complete the final municipal inspection.

Free Estimate

Get a Free Estimate for Detached ADU Construction

Tell us about your property and your goals. We'll review your site and provide a detailed cost and timeline estimate at no charge, with no obligation.

  • Property feasibility review at no cost
  • Realistic cost range based on your specific lot
  • Estimated timeline from design through occupancy
  • Response within 1 business day

No spam. No pressure. We serve homeowners across Los Angeles County.

Request Your Free Estimate

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We respond within 1 business day. No spam.

Common Questions

Detached ADU Construction: Frequently Asked Questions

What Los Angeles homeowners ask most before starting an ADU project.

How much does a new detached ADU cost in Los Angeles?
Working with a professional detached ADU builder, you can expect ground-up construction in Los Angeles to start at approximately one hundred fifty thousand dollars. For a standard six hundred to eight hundred square foot detached unit, complete project costs typically range between one hundred seventy-five thousand and two hundred thirty thousand dollars. The final price varies based on site characteristics, utility trenching distances, and chosen finishes. As your general contractor, we provide a binding, all-inclusive quote after conducting a free property assessment, ensuring there are no unexpected pricing surprises during the build.
How long does it take to build a new detached ADU in Los Angeles?
The complete timeline for detached ADU construction spans from ten to fourteen months. During this period, the design and engineering phase occupies four to six weeks, while the city plan check process through LADBS typically requires ten to sixteen weeks. Once permits are approved, the actual construction phase takes twelve to eighteen weeks. Some smaller jurisdictions like Culver City or Glendale may issue building permits slightly faster. As a dedicated detached ADU contractor, we coordinate every phase of the project to ensure a seamless transition from blueprints to final utility inspections.
How big can I build a new detached ADU in Los Angeles?
California state regulations permit homeowners to construct a detached ADU up to twelve hundred square feet, regardless of the primary house size. However, the practical size you can build is often shaped by local setbacks, which require a four foot clearance from the rear and side property lines. We must also evaluate your yard's available space, utility access, and local lot coverage limits. During our initial feasibility assessment, our design team will analyze your property lines to establish the maximum possible dimensions for your new backyard cottage.
Do I need to replace existing parking if I build a detached ADU?
You do not need to replace existing parking if your property is located within a half mile of public transit, which applies to almost all residential lots in Los Angeles. If the construction of your new detached ADU requires demolishing an existing garage, local cities are prohibited from forcing you to build replacement parking spaces. This makes detached ADU construction much more affordable and simple. We will review your property's proximity to transit lines during our free consultation to confirm that you qualify for this parking exemption.
What's included in your all-inclusive new ADU construction price?
Our pricing is completely all-inclusive, meaning we manage every step of your project under one single contract. This covers initial site surveys, architectural plans, structural engineering calculations, and all city permit submission fees. It also includes full site preparation, foundation pouring, framing, utility hookups, and complete interior finishes such as flooring, cabinetry, and appliances. Working with a unified detached ADU builder means you do not have to coordinate between different designers and trades, saving you time, stress, and extra management costs.
Can I build a two-story detached ADU in Los Angeles?
Yes, building a two-story detached ADU is allowed in most Los Angeles residential zones. State and local guidelines permit a maximum height of sixteen feet, which can extend to eighteen feet in transit-rich areas. Constructing a two-story unit is an excellent way to preserve yard space, though it does require additional structural engineering and foundation support to meet building codes. As an experienced detached ADU contractor, we will guide you through the architectural tradeoffs and structural requirements during the initial design phase of your project.

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Explore Further

Cities, Models & Projects

Discover where we build, which ADU models fit this service, and completed projects from our portfolio.

City Guide

ADU Builder in Encino

Licensed Encino ADU Builder

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ADU Builder in Studio City

Serving Studio City

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ADU Builder in Pasadena

Licensed ADU Contractor in Pasadena

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ADU Builder in Burbank

Licensed ADU Contractor in Burbank

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ADU Builder in Sherman Oaks

Licensed Sherman Oaks ADU Contractor

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ADU Builder in Culver City

Licensed Culver City ADU Contractor

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City Guide

ADU Builder in San Fernando Valley

Licensed San Fernando Valley ADU Builder

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City Guide

ADU Builder in Santa Monica

Licensed Santa Monica ADU Builder

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City Guide

ADU Builder in Venice

Serving Venice

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City Guide

ADU Builder in West Hollywood

Licensed ADU Contractor in West Hollywood

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City Guide

ADU Builder in Torrance

Licensed Torrance ADU Contractor

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City Guide

ADU Builder in Los Angeles

Licensed ADU Contractor in Los Angeles

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City Guide

ADU Builder in Glendale

Serving Glendale

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City Guide

ADU Builder in Long Beach

Licensed Long Beach ADU Contractor

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City Guide

ADU Builder in El Segundo

Licensed South Bay ADU Builder

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City Guide

ADU Builder in Woodland Hills

Licensed Woodland Hills ADU Builder

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ADU Model

2 Bed 750

Two private bedrooms, maximum rental income, and genuine multigenerational living space.

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ADU Model

1 Bed 650

A spacious one-bedroom ADU with room to breathe, designed to attract quality long-term tenants.

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ADU Model

Studio 400

A compact, high-efficiency studio designed to maximize rental yield on any LA lot.

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Completed Project

Pasadena Detached Backyard ADU

A new 650 sq ft Craftsman-influenced ADU built in the rear yard of a 1921 bungalow in Pasadena's Bungalow Heaven historic neighborhood. Designed, permitted, and built in under 11 months.

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Completed Project

Culver City 2-Bed Detached ADU

A two-story 750 sq ft two-bedroom ADU built in a compact Culver City rear yard, preserving outdoor space for the main house while maximizing rental income in one of LA's strongest ADU markets.

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Want to See What Your ADU Could Look Like?

Our interactive configurator lets you choose type, size, finishes, and exterior style, showing you matching floor plans with a live budget estimate.

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ADUs starting from $150,000. Request a free estimate.

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