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Accessory Dwelling Units (ADU)

American Eagle Plumbing & Construction

The Best ADU Contractor in El Sobrante, CA

In El Sobrante, CA, an accessory dwelling unit (ADU) is a popular home construction project because it adds valuable living space to your property. American Eagle Plumbing & Construction is an El Sobrante ADU contractor and architect who can manage this entire home improvement project, from ADU design to construction.


There are many options when it comes to the types of ADUs that are possible and ideal for your home. American Eagle Plumbing & Construction can design and build an ADU from the ground up (as an attached or detached ADU). We can also design and build an ADU garage conversion.

Your Trusted El Sobrante ADU Contractor and Construction Company

Additionally, we’re experts in the permits, state law requirements, and ADU ordinances issued by the city of El Sobrante and surrounding areas. We manage the processes needed to acquire the proper building and zoning documentation, so you don't have to.


American Eagle Plumbing & Construction is an El Sobrante ADU contractor and ADU construction company that's here to expand your home's space and value so it better suits your needs.

Construction Companies

Accessory Dwelling Unit vs. Room Addition

ADU homes – otherwise known as granny flats or mother-in-law houses – are new structures that are attached or detached from the existing residence. It acts as a stand-alone home with its own kitchen, bath, bedroom, and living space. An accessory dwelling unit can act as a guest house, rental unit, separate living or workspace, or pool house.


A room addition, on the other hand, is where a single-family home's main structure is expanded for additional square footage. These projects are often done to enlarge a kitchen, family room, or master bedroom – or to add a new bedroom and/or bathroom. This construction can also include building a second or third story.

El Sobrante ADU Services

American Eagle Plumbing & Construction has 20+ years of experience doing new construction and renovations in El Sobrante, CA, and the surrounding areas. We’re a full-service ADU contractor with an equal focus on high-quality craftsmanship and unbeatable customer service. Your satisfaction and comfort are our number one goal.


American Eagle Plumbing & Construction can manage every facet of your El Sobrante ADU construction, including when converting your garage. Though our expertise includes design, architecture, and engineering, we’re happy to partner with an independent architect, designer, or engineer you plan to hire.

  • Architectural Planning
  • Open Floor Plans
  • Design & Construction
  • Engineering
  • Permit Acquisition
  • Kitchen Construction
  • Bathroom Construction
  • Demolition
  • Structural Improvements
  • Electrical & Lighting
  • Title 24 Energy Efficiency
  • HVAC
  • Roofing
  • Tilework
  • Plumbing
  • Flooring
  • Painting
  • Windows
  • Doors
  • Solar Panels

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Contact American Eagle Plumbing & Construction today for reliable, affordable service from experienced professionals. 

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(510) 253-8049 (650) 445-9888

ADU Design & Construction for Less Time & Money

Choose from nearly 30 gorgeous ADU plans pre-approved by the city of El Sobrante. These detached, flexible designs shorten the permit process by eight weeks or more! Spanning 200-1,200 square feet, they're designed to suit most residential properties and range from studios to 2-story ADU plans.


These ADU designs and floor plans offer exciting features, including rooftop decks, exterior staircases, expansive patios, abundant natural light, and stunning architectural elements.

How It Works

American Eagle Plumbing & Construction can help you select the right plan for your property and your needs. Simply contact us for a site visit and free estimate. We then manage the plan submission process for you. As a one-stop-shop, we also build your ADU from the ground up, managing every element of construction for a seamless, expedited project completion.


Not seeing a plan that’s right for you? Our architectural team can design a custom ADU with an interior and exterior that has all the features and aesthetics you want.

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