
ADU Construction in Simi Valley
Licensed, insured contractors providing expert adu construction to homeowners across Simi Valley and eastern Ventura County.
California's ADU-friendly regulations make it easier than ever for Simi Valley property owners to add living space. Eco Grizzly builds detached ADUs, garage conversions, and junior ADUs throughout Simi Valley, Wood Ranch, Big Sky, Madera, Rancho Simi, Santa Susana, Moorpark. We manage architectural plans, city permits, utility connections, and full construction from foundation to finish. Simi Valley's suburban development from the 1960s through the 2000s produced thousands of homes with both masonry and factory-built fireplace systems. The area's hot, dry summers and proximity to wildland-urban interface zones make chimney maintenance critical.

Project Photos
View full gallery →Local Expertise in Simi Valley
We are a local, licensed, and insured contractor with deep knowledge of Simi Valley and eastern Ventura County. Our technicians understand the unique needs of suburban tract homes, ranch residences, and hillside properties and the specific building code requirements for each municipality. Every job starts with a thorough assessment, includes a written estimate with photos, and ends with a clean jobsite. We arrive on time, communicate clearly, and stand behind our work with a written guarantee.
Remodeling Suburban tract homes, ranch residences, and hillside properties
Simi Valley is known for its suburban tract homes, ranch residences, and hillside properties. Our remodeling team understands the architectural details, structural quirks, and design sensibilities specific to homes in Simi Valley and eastern Ventura County. We preserve what makes your home special while upgrading functionality, energy efficiency, and comfort.
Permits, Codes, and Inspections
Every remodeling project that involves structural, plumbing, or electrical work requires a city permit. Eco Grizzly handles all permit applications, plan submissions, and inspection scheduling for projects in Simi Valley. We stay current with the building code requirements for each jurisdiction in Simi Valley and eastern Ventura County so you do not have to worry about compliance.
Schedule a ADU Consultation in Simi Valley
Call (424) 258-9882 or fill out our online form to book an in-home consultation. We review the scope, discuss materials and sequencing, and provide a written estimate with next steps before any construction begins.
How It Works
Four simple steps from first call to finished job.
Call or Book Online
Reach us at (424) 258-9882 or submit the online form. We respond within two hours on business days.
On-Site Consultation
A project manager visits your home to discuss your goals, take measurements, and review scope.
Design and Estimate
Receive a detailed design plan, materials list, and itemized estimate within five business days.
Build and Deliver
Our crew completes the work on schedule with progress updates, a clean jobsite, and a final walkthrough.
Why Simi Valley Homeowners Choose Eco Grizzly
Free In-Home Estimate
Schedule a no-obligation site visit. We measure, discuss your vision, and deliver a written quote within five business days.
Licensed and Insured
CSLB license #1077111, full general liability, and workers compensation insurance on every project.
Dedicated Project Manager
One point of contact from design through final walkthrough. Progress photo updates at every milestone.
On-Time Completion
We provide a detailed project schedule with milestones at contract signing and stick to it.
Transparent Pricing
You receive a written, itemized estimate before any work begins. No hidden fees or surprise change orders.
Permit Handling
We pull all required building permits and schedule city inspections so you do not have to.
Real Results
ADU Projects in Simi Valley
Real adu work completed by our licensed team in the Simi Valley area.
Before, Rebar & Vapor BarrierConcrete Patio & Room Addition
Southern California
This project combined a large concrete patio pour with a structural room addition. The crew installed a full rebar grid over a vapor barrier, poured and finished the concrete slab, and completed the room addition framing and exterior to match the existing home. The finished patio features a stamped concrete surface with a built-in outdoor kitchen island, creating a seamless indoor-outdoor living area.
Have a project in mind? We can help.
ADU FAQs for Simi Valley
Common questions answered by our certified technicians.
ADU Near Simi Valley
The closest cities where we also provide adu.

Build Your ADU
Serving Simi Valley homeowners. Call (424) 258-9882 to request an on-site estimate or send your project details online.




