Ventura County, CA · Lic. #1080447

ADU Construction
in Thousand Oaks, CA

National Development Group builds custom accessory dwelling units across Thousand Oaks and Ventura County. From permits to final walkthrough, we manage every phase of your ADU project with fixed pricing, California Title 24 compliance, and a process built to eliminate the uncertainty that slows most ADU projects down.

5.0 · Google Reviews

Commercial Tenant • Improvements • Facility Renovations • High-End Residential Remodels • Fixed-Price Contracts • On-Time Delivery

Testimonials

What Homeowners Across Ventura County Say About Working With Us

Our Services

ADU
Construction Services

Professional ADU construction services designed to create functional, high quality living spaces that add value and flexibility to your property. National Development Group handles every stage of the process, from planning and construction to final completion, delivering efficient project management, reliable communication, and craftsmanship built to last.

ADU Construction
Built Around Clarity and Compliance

Accessory dwelling units have become one of the most in-demand residential construction projects in California, and for good reason. They add livable square footage, create rental income potential, and increase long-term property value.


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Permitting and Title 24 Compliance
Handled From the Start

The permitting process is where most ADU projects lose momentum. California ADU regulations have evolved significantly in recent years, and local jurisdictions across Ventura County each carry their own requirements on top of state law. A contractor who is not current on those requirements will cost you time before the first shovel hits the ground.

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Fixed Price
That Reflects the Full Scope

ADU pricing in California varies wildly, and low initial estimates that grow significantly once construction is underway are one of the most common complaints homeowners have about the process. That gap between the number that wins the bid and the number on the final invoice usually comes from one place: a contractor who scoped the project too loosely to price it accurately at the start.

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End to End Project Management
With One Point of Contact

An ADU involves more moving parts than most homeowners anticipate. Designers, engineers, permit technicians, foundation crews, framers, electricians, plumbers, HVAC installers, insulation contractors, drywall crews, finish carpenters, and inspectors all have to coordinate in a specific sequence for the project to move efficiently.

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Licensed. Compliant. Accountable.

An ADU Contractor That 
Manages the Process, Not Just the Construction

Accessory Dwelling Units provide homeowners with a flexible way to add living space, increase property value, and create long term functionality for growing families, guests, or rental opportunities. National Development Group delivers professionally managed ADU construction services designed to bring these spaces to life with quality craftsmanship and efficient project coordination.

As a licensed Class B General Contractor (Lic. #1080447) headquartered in Thousand Oaks, CA, we guide homeowners through every phase of the construction process, from planning and site preparation to final completion. Our team focuses on organized scheduling, transparent communication, and dependable workmanship to help keep projects moving smoothly and efficiently.

Local. Permitted. Ready.

ADU Construction Across Across Thousand Oaks and Ventura County

National Development Group is based in Thousand Oaks and builds ADUs throughout Ventura County. Our familiarity with local permitting offices, regional building departments, and jurisdiction-specific requirements across the county means your project moves through the approval process faster and starts construction on a realistic timeline.