ADU Construction

Smart property expansion. Built for lasting functionality.

Accessory dwelling unit construction across Long Beach and surrounding Southern California communities.

Experienced ADU Builder

Legacy & Co. Construction Inc. provides professional ADU construction services for homeowners throughout Long Beach and nearby cities.


Accessory Dwelling Units allow property owners to expand living space while increasing long-term property value. These secondary living units can serve as guest houses, rental properties, home offices, or private accommodations for family members.


Our team focuses on structured planning, organized construction, and reliable craftsmanship to ensure each ADU project is built efficiently and in accordance with local building requirements.

Detached ADU Construction

Detached ADUs are separate structures built on the same property as the primary home.


These units provide privacy and flexibility while adding usable living space to the property.


Detached ADU Construction Services

  • Backyard ADU construction
  • Independent residential units
  • Custom layout planning
  • Structural construction and finishing


Detached ADUs create self-contained living environments designed for comfort and long-term functionality.

Garage Conversion ADUs

Garage conversions transform existing garage structures into functional residential living spaces.


This option is often a cost-effective way for homeowners to add additional housing without constructing a completely new structure.


Garage Conversion Services

  • Garage structural modification
  • Interior framing and layout development
  • Drywall and flooring installation
  • Interior finishing upgrades


Garage conversion ADUs provide additional housing while maximizing existing property structures.

Custom ADU Design & Planning

Successful ADU construction begins with thoughtful planning and careful coordination.


Legacy & Co. Construction Inc. works with homeowners to ensure each ADU project aligns with property conditions, layout goals, and local building regulations.


ADU Planning Services

  • Site preparation and planning
  • Structural layout development
  • Interior construction coordination
  • Construction project management


Proper planning ensures each ADU functions as a comfortable, efficient living space.

Interior Construction & Finishing

Once structural work is complete, interior construction transforms the ADU into a fully functional living environment.


Our team completes interior finishing work with attention to quality craftsmanship and durability.


Interior ADU Construction Services

  • Drywall installation and finishing
  • Flooring installation
  • Interior painting
  • Tile and stone installation


These finishing elements ensure the ADU is comfortable, durable, and visually cohesive.

What Our Clients Say

★★★★★

“Legacy & Co. Construction was professional, organized, and detail oriented throughout our remodel.”


Homeowner

Long Beach, CA

★★★★★

“The team communicated clearly and delivered exactly what they promised. Excellent workmanship.”


Property Owner

Lakewood, CA

★★★★★

“Our kitchen remodel turned out beautifully. The crew was respectful, clean, and reliable.”


Residential Client

Huntington Beach, CA

★★★★★

“Legacy & Co. Construction completed our ADU project with excellent organization and craftsmanship.”


Homeowner

Long Beach, CA

★★★★★

“The team stayed on schedule and communicated clearly throughout construction.”


Property Owner

Downey, CA

★★★★★

“A reliable contractor that delivered high-quality construction results.”


Residential Client

Huntington Beach, CA

★★★★★

“Legacy & Co. Construction completed our ADU project with excellent organization and craftsmanship.”


Homeowner

Long Beach, CA

★★★★★

“The team stayed on schedule and communicated clearly throughout construction.”


Property Owner

Downey, CA

Service Areas

Legacy & Co. Construction proudly serves homeowners and property owners throughout Long Beach and nearby communities, including:

Frequently Asked Questions

  • 1. What is an ADU?

    An ADU, or Accessory Dwelling Unit, is a secondary residential living space built on the same property as a primary home.

  • 2. What are ADUs used for?

    ADUs can be used as rental units, guest houses, private living spaces, or home offices.

  • 3. Do you build detached ADUs?

    Yes. We build detached ADUs that function as independent residential units.

  • 4. Can you convert a garage into an ADU?

    Yes. Garage conversions are a common way to create additional living space.

  • 5. Do ADUs increase property value?

    In many cases, ADUs can increase property value by adding usable living space.

  • 6. Do ADU projects require permits?

    Yes. ADU construction must comply with local building regulations and permitting requirements.

  • 7. How long does an ADU project take?

    Construction timelines depend on project size, design complexity, and permitting requirements.

  • 8. Do you handle the construction process?

    Yes. Our team coordinates the construction process to ensure projects are completed efficiently.

  • 9. What areas do you serve?

    We serve Long Beach and surrounding cities including Downey, Los Alamitos, Lakewood, Los Angeles, and Norwalk.

  • 10. How do I start an ADU project?

    The first step is discussing the property, layout goals, and construction plan before beginning the build.

Start Your Construction Project

If you are planning a home remodeling project, custom home construction, or property improvements in Long Beach, work with a contractor that values craftsmanship, organization, and professionalism.

Request Consultation Today