From
$140,000
Your Dream ADU,
Installed in a Day.
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
Schedule a Free Consultation
Free · No obligation · ~15 min
Don't just take our word for it
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.”
From
$75,000
From
$300,000+
Two homes. One footprint.
Casden Duplex
2Units
4Bath
1,862Sq ft
10ftCeilings
Schedule a Free Consultation
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5–6 month total timeline, single-day assembly.
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Add $200K–$1M in property value.
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Fire-, earthquake- & hurricane-resistant.
Steel frame. Rock-wool core. Glass walls. 10ft ceilings.
One crane. One day. Done.
Same-day install
What your Casden ADU could look like
Explore exterior concepts, interior finishes and layouts.
Everything you're wondering
Is it really installed in a single day?
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.
How does this compare to traditional construction costs?
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.
What kind of return can I expect from an ADU?
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.
Do Casden ADUs meet California codes and permits?
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.
What about durability — earthquakes, fire, and weather?
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.
Casden ADU vs. traditional build
Feature
Casden ADU
Traditional
Affordable ($225/sq.ft.)
16-week delivery
1-day installation
Designer options
Fire & earthquake safe
Garage conversion
Pre-approved plans
Book your free phone consultation
Pick a time — we'll confirm whether your property qualifies and give you a real price. No obligation.
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