Premium steel-framed ADUs with glass walls, 10ft ceilings, and designer finishes.
Pre-approved plans. Permits in weeks, not months.
California Factory-Built Housing plans reviewed by Intertek
Free · No obligation · ~15 min
Google Reviews
4.8 out of 5 · based on 71 reviews
Eric Karberg
June 30, 2025
“Looks even better in person than the photos. The glass wall is a showstopper.”
Michael Park
June 23, 2025
“Crew was in and out before lunch. Genuinely could not believe the speed.”
Steven Hayes
June 16, 2025
“Perfect for renting out, rental inquiries started the same week.”
Most spacious
931 sq ft with 2 bedrooms, 2 bathrooms, and 10 ft ceilings. Base model pricing starts at $140,000.
Factory-built unit pricing is separate from property-specific costs such as site preparation, foundation, utility connections, permits, crane access, and finish selections.
Best value
478 sq ft with 1 bedroom, 1 bathroom, and 9.5 ft ceilings. Base model pricing starts at $75,000.
Factory-built unit pricing is separate from property-specific costs such as site preparation, foundation, utility connections, permits, crane access, and finish selections.
Two homes. One footprint.
1,862 sq ft across 2 units, with 4 bathrooms and 10 ft ceilings. Base model pricing starts at $300,000.
Factory-built unit pricing is separate from property-specific costs such as site preparation, foundation, utility connections, permits, crane access, and finish selections.
5–6 month total timeline, single-day assembly.
Add $200K–$1M in property value.
Fire-, earthquake- & hurricane-resistant.
Steel frame. Rock-wool core. Glass walls. 10ft ceilings.
Explore exterior concepts, interior finishes and layouts.
Yes. Your ADU arrives 95% complete from our offsite facility. With a crane, our crew assembles and connects it in just hours. Many clients are shocked to see a fully finished space ready the same day.
Traditional ADUs often run $300–$400 per sq. ft. and take 12–18 months. Casden ADUs average $225–$236 per sq. ft. and are installed in 16 weeks total, saving both time and 33–60% in cost.
A Casden ADU typically adds $200K–$1M in property value and can generate $2,000–$4,000/month in rental income, depending on your location.
Yes. Casden's one- and three-bedroom factory-built plan sets are approved for California's Factory-Built Housing program through Intertek under approval numbers R-22348 and R-22345. The factory-built structure is pre-approved; foundation, utilities, site work, zoning, and other local requirements still need approval from your city or county.
Casden ADUs are seismic grade 10, fire-resistant (steel and rock wool construction), hurricane-resistant, and engineered for California's diverse climates, from desert heat to mountain snow.
Pick a time, we'll confirm whether your property qualifies and give you a real price. No obligation.
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