Ground-Up ADU Construction Services in California
What Is a Ground-Up ADU?
Types of ADUs We Build
Detached Guest Houses
A detached guest house is a private unit separate from your main home, ideal for hosting family and friends. These ADUs typically include a bedroom, bathroom, small living space, and kitchenette. They offer comfort and privacy for guests while preserving your home’s peace and quiet.
We design guest houses that feel like mini homes—with stylish interiors, full amenities, and design elements that match or complement your primary residence.
Rental Units for Passive Income
Rental ADUs are one of the most popular ADU types in California. Whether you’re considering long-term tenants or short-term rental platforms like Airbnb, a rental ADU can generate consistent income.
These units are self-contained, featuring a full kitchen, living room, bathroom, and one or more bedrooms. We help homeowners design energy-efficient, low-maintenance spaces that are attractive to renters while complying with all rental and zoning regulations.
In-Law Suites & Multigenerational Living Units
More families are choosing to live under one property roof—while still maintaining independence and personal space. Our custom-built in-law suites are perfect for aging parents, adult children, or multigenerational families.
These ADUs prioritize accessibility, comfort, and safety. We incorporate features such as wider doors, single-level layouts, and walk-in showers to make them senior-friendly while keeping the design warm and inviting.
Home Offices & Creative Studios
One-Bedroom Compact Units
Designed to maximize space in smaller yards, these one-bedroom ADUs are efficient and stylish. They include a living area, kitchen, bathroom, and separate sleeping quarters, ideal for single occupants, couples, or part-time guests.
With smart layouts and clever storage solutions, we turn even modest spaces into comfortable homes.
Two-Bedroom Family Units
For larger families or rental needs, two-bedroom ADUs offer the most flexibility. These spacious ground-up units often include an open-concept kitchen and living room, two full bedrooms, and a private outdoor patio.
Whether you’re building for family use or long-term rental, we design these ADUs to feel like full-sized homes—with quality finishes and thoughtful layouts.
Luxury Backyard Retreats
Want something more unique? We also specialize in designing custom backyard retreats—high-end ADUs with premium finishes, spa-style bathrooms, full kitchens, and private patios or decks.
These are perfect for homeowners who want to enjoy a private space for themselves, host special guests, or even create a luxury rental experience in their own backyard.
Designed for California Living
At Bay Central Builders, we build ADUs with California’s lifestyle and climate in mind. That means energy-efficient systems, stylish modern design, and seamless indoor-outdoor flow. We manage the entire project—from city approvals to final construction—ensuring your new ADU is compliant, beautiful, and built to last.
Contact us today for a free consultation and start building your future, right in your own backyard.