Southern California
Prefab ADUs in Inland Empire
The Inland Empire offers some of the best ADU opportunities in California — larger lots, growing rental demand, and more affordable entry points than coastal markets.
$1,600–$2,500/mo
Avg. ADU Rental Income
7,000+ sq ft
Avg. Lot Size
4–8 weeks
Permit Timeline
Why Build an ADU in the Inland Empire?
The Inland Empire — Riverside and San Bernardino counties — is one of California's fastest-growing regions and an increasingly attractive ADU market. Larger lot sizes mean more placement flexibility and easier permitting. Lower entry costs compared to coastal markets make the investment math work even better. Growing population and rising rents create strong demand for quality housing. Cities like Riverside, Corona, Ontario, Rancho Cucamonga, and Fontana are seeing significant ADU activity as homeowners recognize the opportunity to generate rental income and add property value.
IE ADU Regulations & Permitting
Inland Empire cities follow California's statewide ADU provisions. Many IE cities have been proactive in supporting ADU development, recognizing the need for additional housing in one of the state's fastest-growing regions. Riverside and San Bernardino counties both have established ADU permitting processes. Larger lot sizes typical in the IE often simplify setback compliance and unit placement. Several IE cities offer expedited ADU plan review. Impact fees are waived for ADUs under 750 sq ft per state law. Pre-engineered plans can further streamline the permitting process. EVO ADU's state-approved plan sets are designed to move through IE permitting efficiently.
The IE Advantage: Space & Value
The Inland Empire's biggest ADU advantage is space. Average lot sizes of 7,000 or more square feet compared to 5,000 in many coastal areas provide more flexibility for ADU placement. This means easier setback compliance, more room for outdoor living space, and better privacy for both the primary home and the ADU. Combined with lower construction costs and growing rental demand, IE homeowners often see the strongest ROI relative to investment in the state. EVO ADU's California-based manufacturing is conveniently located for IE delivery and installation, keeping logistics costs low.
Growing Rental Demand in the IE
The Inland Empire's population has grown significantly as residents from Los Angeles and Orange County seek more affordable housing while maintaining employment in coastal job centers. This migration has driven rental demand across the region, particularly for quality housing with modern finishes. ADU rents in the IE have increased steadily, with one-bedroom units now commanding $1,800 to $2,500 per month in desirable communities. The region's expanding logistics, healthcare, and education sectors add local employment demand that further strengthens the rental market. For homeowners, this creates an opportunity to generate meaningful rental income at a lower investment point than coastal markets require.
Getting Started in the Inland Empire
The Inland Empire's larger lots and straightforward permitting processes make it one of the easiest regions in California to build an ADU. Start by checking your property's eligibility with our Site Eligibility tool. The IE's generous lot sizes mean that most properties can accommodate any model in the EVO lineup, including our largest Two Plus model. Our team is experienced with permitting across Riverside and San Bernardino counties, and most IE projects are completed within 4 to 5 months — often faster than coastal markets due to simpler site conditions and efficient local permitting.
Areas We Serve in Inland Empire
5 Models. Starting at $135,800.
From 350 sq ft studios to 800 sq ft 2-bedroom homes. All factory-built, permit-ready, and delivered complete.
Prices are for the factory-built unit plus installation. Site work and permits quoted separately.