Atra Construction: ADU Contractor Serving the Bay Area
Atra Construction is an accessory dwelling unit builder based in Northern California, specializing in the design and construction of ADUs for homeowners across the Bay Area. Their work covers a range of project types, from detached ADU builds to two-story units with garages, with a focus on transparent communication and consistent craftsmanship throughout the process.
The company serves most cities in the Bay Area, including San Jose, CA, and approaches each project with attention to the specific needs of the property and the homeowner. Their process runs from initial consultation through to construction completion, with the team handling permitting, planning, design, and construction management along the way.
Services and Process
Atra Construction structures their work around four key phases:
- Free Consultation: An initial review of what is possible on the property, including preliminary guidance on budget and timeline.
- Design Options: Working with architects to develop a design suited to the available space and the homeowner's requirements.
- Concept Planning: Ensuring that city permits and planning approvals are in place before construction begins.
- Construction Management: Coordinating with contractors during the build to keep the project on track.
As a detached ADU builder, Atra Construction handles the full scope of the project rather than passing off individual phases to separate parties. Their stated priorities include honest communication, sustainability practices, and reliable service at each stage.
Available Floor Plans
Atra Construction offers an extensive library of ADU floor plans, covering a range of sizes and configurations to suit different lots and needs. Homeowners can choose from studio units, one-bedroom, two-bedroom, and three-bedroom layouts, as well as two-story options and units that include garage space.
Studio floor plans range from 240 to 300 square feet and are available as detached units with either linear or L-shape kitchen layouts. A two-story studio option with a one-car garage is also available at 284 square feet of livable space.
One-bedroom floor plans cover a wide range, from 363 square feet up to 749 square feet. These include single-story detached units in rectangle, square, and L-shaped configurations, as well as a two-story option at 598 square feet and a unit above a two-car garage at 528 square feet.
Two-bedroom floor plans start at 535 square feet and go up to 1,000 square feet in a two-story layout. Options include units with one, one-and-a-half, or two bathrooms, and kitchen layouts vary between L-shape, U-shape, and linear configurations.
Three-bedroom floor plans range from 1,000 to 1,200 square feet. These include rectangle and square-shaped detached units, with bathroom counts ranging from one-and-a-half to two-and-a-half. One option includes a two-car garage alongside the three-bedroom unit.
Loft-type floor plans are also part of the available selection, offering an alternative layout for those looking for a more open living arrangement within a compact footprint.
Each floor plan is intended as a starting point, with Atra Construction's team available to walk homeowners through the options and identify which layout best fits their property and goals — whether that is adding rental income, creating space for family members, or increasing overall property value.
