ADU Company in Los Angeles
ADU Contractors You Can Trust!
Transform your property with Preferred Home Builders, the trusted name for ADU construction in Los Angeles and surrounding areas. With over 28 years of experience and more than 3,000 projects completed, we specialize in creating high-quality accessory dwelling units (ADUs) tailored to your needs. From garage conversions to detached ADUs and custom designs, we handle every aspect—from design and permits to construction—ensuring your project is completed on time and within budget. Experience unparalleled craftsmanship, personalized service, and transparent communication with a contractor who truly cares. Your vision, brought to life. Schedule your free consultation today!
TYPES OF ADUS
What is a Detached ADU?
A Detached ADU (Accessory Dwelling Unit) is a standalone housing structure separate from the main home, providing private living space with its own kitchen, bathroom, and entrance. Ideal for guest houses, rental income, or multi-generational living, Detached ADUs add value to your property while enhancing its functionality.
What is an Attached ADU?
An Attached ADU is connected to your existing home, offering additional living space without requiring a separate structure. With its own entrance and utilities, it’s perfect for aging parents, renters, or an office. These ADUs seamlessly blend with your home’s architecture while maximizing your property’s potential.
What is a Garage Conversion ADU?
A Garage Conversion ADU transforms your underutilized garage into a fully functional living space. Whether it’s a studio apartment, guest suite, or office, this option is budget-friendly, eco-conscious, and adds immense value to your property.
What is a Junior ADU?
A Junior ADU (JADU) is a small, self-contained unit within your existing home or garage, typically under 500 square feet. Featuring a kitchenette and separate entrance, JADUs are cost-effective solutions for homeowners looking to create flexible living arrangements.
What is an Above-Garage ADU?
An Above-Garage ADU utilizes the unused space above your garage to create a beautiful, efficient living unit. With a private entrance and utilities, it’s perfect for renters or extended family while preserving your property’s footprint.
What is an Interior Conversion ADU?
An Interior Conversion ADU repurposes existing space within your home, such as a basement or attic, into a self-contained living unit. It’s a cost-effective and efficient way to maximize your home’s potential for rental income or additional family living quarters.
What is a Two-Story ADU?
A Two-Story ADU is a multi-level structure that maximizes vertical space to create a fully functional dwelling unit. Perfect for smaller lots, it offers ample living space with modern design features, making it ideal for families or rental income.
What is a Custom ADU?
A Custom ADU is a personalized dwelling unit designed to meet your unique needs and style. Whether it’s modern, rustic, or eco-friendly, custom ADUs allow for complete flexibility in design, layout, and finishes to match your vision.
Hear From our team
Testimonials
Accessary Dwelling Units (ADUS)
A Detached Accessory Dwelling Unit (ADU) is a standalone living space built on the same property as a primary residence. These self-contained units come with their own entrance, kitchen, and bathroom, offering homeowners flexible options for rental income, guest accommodations, or multi-generational living. Detached ADUs are a perfect solution for those seeking privacy and additional housing without altering the main home.
Here are some things to know about Detached ADUs:
- Size: Detached ADUs can have a maximum floor area of 1,200 square feet, depending on local regulations.
- Height: Maximum height varies but is typically around 16-18 feet unless specific zoning allows for taller structures.
- Setback: Most areas require at least 4 feet of setback from property lines.
- Energy Efficiency: Solar panels may be required for newly constructed ADUs in compliance with California energy codes.
- Permits: Building a Detached ADU requires permits for design, construction, and utilities to ensure compliance with local laws.
- Cost: Detached ADUs generally cost between $100,000 to $300,000, depending on size, finishes, and local labor costs.
Why Choose a Detached ADU?
With privacy, independence, and a functional design, Detached ADUs are perfect for enhancing your property’s value and providing versatile housing solutions.
An Attached Accessory Dwelling Unit (ADU) is a self-contained living space built as an extension of your primary residence. These units share at least one wall with the main house but maintain a separate entrance, kitchen, and bathroom. Attached ADUs are ideal for families who need additional living space or homeowners looking for a flexible rental opportunity.
Here are some things to know about Attached ADUs:
- Size: Attached ADUs can be up to 50% of the primary residence’s size or a maximum of 1,200 square feet, whichever is smaller.
- Height: Height restrictions align with local building codes for residential properties, usually around 16-18 feet.
- Setback: Often requires a setback of 4 feet or less, depending on property lines and local regulations.
- Integration: Attached ADUs blend seamlessly with your home’s existing architecture while providing a private, functional space.
- Permits: Permits are required for construction, plumbing, and electrical work to ensure code compliance.
- Cost: Typically less expensive than Detached ADUs, with costs ranging from $80,000 to $250,000, depending on design and materials.
Why Choose an Attached ADU?
Attached ADUs offer a cost-effective way to expand your living space without sacrificing privacy, making them a popular choice for multi-generational families or income-generating rentals.
A Garage Conversion Accessory Dwelling Unit (ADU) transforms an existing garage into a fully functional living space. These units utilize the structure already on your property, offering a cost-effective and sustainable way to add value and functionality.
Here are some things to know about Garage Conversion ADUs:
- Size: Limited to the existing footprint of your garage, typically 400-600 square feet for single-car garages and larger for multi-car garages.
- Height: Height depends on the garage structure, but ceilings must meet a minimum height requirement of 7 feet.
- Cost-Efficiency: Repurposing an existing structure significantly reduces construction costs, averaging between $50,000 and $150,000.
- Permits: Requires permits for structural changes, plumbing, and electrical work.
- Energy Upgrades: Insulation, windows, and HVAC systems may need upgrading to meet residential building codes.
- Versatility: Perfect for rental income, home offices, or guest suites.
Why Choose a Garage Conversion ADU?
Garage conversions maximize existing space on your property while avoiding costly new construction, making them a budget-friendly solution.
A Junior Accessory Dwelling Unit (JADU) is a smaller, efficient living space carved out of an existing part of the primary residence, such as a converted bedroom or garage. These units are limited in size but provide all the essentials, including a separate entrance and kitchenette.
Here are some things to know about Junior ADUs:
- Size: Limited to 500 square feet by California law.
- Cost: Extremely cost-effective, with costs ranging from $20,000 to $50,000, as it requires minimal construction.
- Permits: Requires a simplified permitting process compared to full ADUs.
- Shared Utilities: Often shares utilities like water and HVAC with the main residence.
- Functionality: Includes a small kitchen or kitchenette and sometimes shares a bathroom with the primary residence.
Why Choose a Junior ADU?
Junior ADUs are a perfect choice for small families, students, or caregivers looking for affordable and functional living spaces.
An Above-Garage Accessory Dwelling Unit (ADU) is a compact, functional living space built above an existing or newly constructed garage. These units are ideal for maximizing property usage while maintaining the primary lot for other purposes like a backyard or garden.
Here are some things to know about Above-Garage ADUs:
- Size: Typically ranges from 400 to 1,200 square feet, depending on local regulations and garage size.
- Height: Includes the height of the garage, often up to 25 feet depending on zoning laws.
- Design: Combines a living area with parking functionality below, offering a seamless and efficient layout.
- Cost: Construction costs can range from $100,000 to $250,000 due to structural reinforcements and utilities.
- Permits: Requires permits for structural engineering, utilities, and compliance with height and setback regulations.
- Versatility: Ideal for rental income, guest housing, or a home office.
Why Choose an Above-Garage ADU?
Above-Garage ADUs allow you to add living space without expanding your property footprint, making them a perfect choice for urban or smaller lots.
An Interior Conversion Accessory Dwelling Unit (ADU) is created by converting an unused space within the primary residence, such as a basement, attic, or spare room, into a fully functional dwelling.
Here are some things to know about Interior Conversion ADUs:
- Size: Utilizes existing spaces, typically ranging from 300 to 1,200 square feet, depending on the area available.
- Cost: Affordable compared to new construction, with costs ranging from $40,000 to $100,000, as it uses existing infrastructure.
- Permits: Requires permits for plumbing, electrical, and any structural modifications.
- Utilities: Often shares utilities like HVAC and plumbing with the main residence.
- Versatility: Ideal for in-laws, rental units, or additional living space for family members.
Why Choose an Interior Conversion ADU?
Interior Conversion ADUs are cost-effective and efficient, offering additional living space without extensive construction.
A Two-Story Accessory Dwelling Unit (ADU) is a multi-level structure designed to maximize living space on properties with limited lot size. These ADUs offer enhanced functionality and privacy with separate floors for different uses.
Here are some things to know about Two-Story ADUs:
- Size: Typically ranges from 800 to 1,200 square feet, depending on zoning restrictions.
- Height: Can reach up to 25 feet or more, depending on local height restrictions.
- Design: Allows for creative layouts, such as living spaces on one floor and bedrooms on another.
- Cost: Costs range from $150,000 to $300,000 due to additional structural requirements.
- Permits: Requires permits for structural, electrical, plumbing, and zoning compliance.
- Privacy: Ideal for providing separate living spaces for multi-generational families or tenants.
Why Choose a Two-Story ADU?
Two-Story ADUs are perfect for homeowners looking to maximize living space without compromising outdoor areas.
A Custom Accessory Dwelling Unit (ADU) is a personalized living space designed to meet specific needs and preferences. From unique layouts to tailored finishes, Custom ADUs provide the ultimate in flexibility and functionality.
Here are some things to know about Custom ADUs:
- Size: Fully customizable, typically up to 1,200 square feet depending on zoning regulations.
- Design: Tailored to fit your exact specifications, whether modern, traditional, or eco-friendly.
- Cost: Costs range widely, from $150,000 to $500,000, depending on complexity and materials.
- Permits: Requires comprehensive permitting for design, utilities, and construction.
- Features: Can include luxury finishes, smart home technology, or sustainable building materials.
- Functionality: Ideal for any use, including rental units, family living spaces, or home offices.
Why Choose a Custom ADU?
Custom ADUs offer unmatched flexibility and personalization, making them the ultimate choice for homeowners looking to create their dream space.
Experience You Can Trust
Over 28 Years of Excellence
With nearly three decades of expertise and over 3,000 projects completed, we have the experience and craftsmanship you can rely on. Our process ensures every detail of your ADU project is handled with precision, delivering results on time and within budget.
Your ADU, Your Way
Custom ADU Design & Construction
At Preferred Home Builders, we bring your vision to life. Our team works closely with you to create a custom ADU design that maximizes your space, meets your lifestyle needs, and enhances your property value. From modern detached ADUs to garage conversions, we specialize in turning ideas into stunning realities.
ADU FAQs
An ADU is a secondary housing unit located on the same lot as a primary residence. It can be detached, attached, or a converted space, like a garage. ADUs are ideal for additional living spaces, rental income, or multi-generational housing.
We specialize in detached ADUs, garage conversions, attached ADUs, above-garage units, and interior conversions, all customized to meet your unique needs.
Â
From design to completion, most ADUs take 6-12 months. This includes permitting, design, and construction.
Yes, we offer comprehensive design services, including 3D renderings, to help you visualize your ADU before construction begins.
Absolutely. We take care of all permits, zoning checks, and compliance with local building codes to ensure a hassle-free process for you.
We use high-quality, durable materials tailored to your budget and design preferences, ensuring a long-lasting and visually stunning ADU.