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ADU Building & Design Services in Ventura & Santa Barbara Counties

From concept to keys in hand, Hive ADU delivers complete design and build services for homeowners ready to maximize their property.

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Start-to-Finish ADU Construction Services Built Around You.

At Hive ADU, we offer comprehensive Accessory Dwelling Unit services specifically designed for homeowners in Ventura and Santa Barbara Counties. From expert feasibility studies and architectural planning to permitting, project management, and construction, we streamline the entire process. Whether you’re building a pre-designed ADU model or a fully custom ADU, our team ensures a seamless experience with clear communication, local expertise, and no surprises.

ADU Building Services

Hassle-Free ADU Construction Backed by 30+ Years of Building Experience. Your Vision, Brought to Life Right In Your Backyard.

Detached ADUs

Efficient, private living spaces built in your backyard. We handle layout, approvals, and construction to deliver a high-quality detached Accessory Dwelling Unit (ADU) with minimal disruption.

ADU Design

Full-service ADU design, including architectural, structural, and energy documentation tailored to your property. Ideal for standard plans or fully custom layouts. Customized ADUs offer flexibility.

Feasibility Study

Find out what’s buildable on your property before you commit. Fast zoning checks, site analysis, and utility review included. Be prepared and know what to expect before you start designing your ADU.

ADU Construction Services - Custom ADUs

Detached ADUs at a Glance

Stand-Alone Units Built for Privacy,
Flexibility, and ROI

Detached Accessory Dwelling Units (ADUs) are independent structures that are separate from your main home. In Ventura and Santa Barbara Counties, they can be up to 1,200 sq ft, two stories, and include full kitchens and bathrooms. Ideal for rental income or multigenerational living, they offer the most flexibility in layout and placement. Hive ADU handles design, permitting, and ADU construction services.

ADU Design Services

Permit-Ready Plans and Expert Guidance
from Start to Finish

Our ADU design packages include architectural plans, structural engineering, and Title 24 energy compliance, everything needed for a smooth permit process. We offer pre-designed models and fully custom layouts tailored to your property and goals. With Hive ADU, your plans are complete, compliant, and ready to build in your Ventura County or Santa Barbara County Location.

Homeowners planning their ADU design with Hive ADU, a Ventura County design and build firm
Hive ADU surveyor performing a property assessment to determine ADU feasibility on a residential lot

Feasibility Studies for ADU Projects

Know Before You Build
Clear Answers for Smarter Decisions

Before starting your ADU project, it’s critical to understand what’s possible on your property. Hive ADU’s feasibility studies evaluate zoning, setbacks, utility access, and other site-specific limitations to ensure your investment makes sense from day one. We provide a clear, builder-informed report so you know what to expect and there are no surprises.

Explore Hive ADU Models

See all our pre-designed ADU models, floorplans, and design finishes

Thinking about building an Accessory Dwelling Unit (ADU) in Ventura or Santa Barbara County? Download our comprehensive Hive ADU Model Guide for detailed floor plans, stunning 3D renderings, premium features, and turnkey pricing. Discover the perfect ADU for your property.

From studio to 3-bedroom ADU floor plans, our catalog features bright, space-maximizing designs tailored for homeowners in Ventura and Santa Barbara counties. Our free guide features real-life examples, detailed cost breakdowns, and expert tips for navigating zoning compliance. Whether you’re planning a granny flat, home office, or tiny home backyard rental, get actionable insights to simplify your build.

Our 20 most popular floor plans in one complete downloadable ADU guide.