ADU Design and Construction Services by OCA Builders in Santa Cruz County
OCA Builders offers ADU design and construction services in Santa Cruz County, working with pre-approved floor plans available through the county to help simplify the planning process. Available designs range from a compact 425 sq. ft. studio to one-bedroom and two-bedroom layouts, offered in modern, coastal, and bungalow styles. Using county-approved floor plans helps streamline permitting and can reduce overall project timelines.
As an experienced ADU contractor serving the Santa Cruz area, OCA Builders covers a range of accessory dwelling unit types to suit different property configurations and homeowner needs.
Types of ADUs OCA Builders Constructs
Detached ADU: A detached ADU is a stand-alone structure built on the same property as the primary residence. This type of backyard cottage or separate unit offers a high degree of privacy and flexibility, making it a practical option for rental income or housing family members independently. Common examples include a small garden cottage or a modern studio situated in the backyard.
Attached ADU: An attached ADU is connected to the primary residence but maintains its own entrance and living space. This option is often more cost-effective than a fully detached build and works well for in-law suite arrangements or multi-generational living. It integrates with the existing home structure, typically as an extension to the side or rear of the main house.
Garage Conversion ADU: OCA Builders also works as a garage conversion contractor, transforming existing garages into livable units. By utilizing an already-standing structure, this approach can reduce both construction costs and time. A single or double garage can be converted into a studio apartment, a one-bedroom unit, or even a home office with additional amenities.
Internal ADU: An internal ADU is created within the existing footprint of the primary home — for example, through an attic conversion or reconfiguration of interior spaces. This is a cost-effective solution that requires minimal changes to the home's exterior and is well-suited to multi-generational living or making use of underutilized areas within the house.
Junior ADU (JADU): As a JADU contractor, OCA Builders can convert spaces within an existing single-family home into a Junior Accessory Dwelling Unit of up to 500 square feet. This is typically one of the more affordable and quicker ADU options, as it works within the existing walls of the home. A large bedroom suite or similar space can be converted into a self-contained unit with a small kitchen and bathroom.
ADU Examples and Practical Applications
OCA Builders has completed a variety of ADU projects across different configurations. Examples of their work include:
- Attached in-law suites with private entrances, kitchenettes, and modern bathrooms — suitable for elderly parents or long-term guests.
- Attached rental units with two-bedroom, one-bathroom layouts designed to generate additional income for homeowners.
- Detached garden cottages featuring open-concept living areas, fully equipped kitchens, and private outdoor spaces.
- Detached family guest houses with two bedrooms and shared living areas, designed for extended family stays.
- Garage conversion studios with modern kitchens, functional bathrooms, and open floor plans making efficient use of the converted space.
- Internal guest bedroom conversions that add a kitchenette and private bathroom to an existing room, creating a rentable or guest-ready unit without major structural changes.
OCA Builders handles ADU projects from initial design and permitting through to final construction and finishing. Their process involves working with homeowners throughout each stage to ensure the completed unit fits the property and meets the homeowner's specific requirements. As a detached ADU builder and accessory dwelling unit builder based in Santa Cruz County, they bring familiarity with local regulations and county-approved design options to each project.
