FOR HOMEOWNERS
Apr 22, 2026
8 min read
01
BACKYARD OFFICE
Apr 15 · 5 min
The Unit Itself: $22,000–$35,000
Includes all structural framing, exterior cladding, roofing, windows, doors, interior finishes, cabinetry, fixtures, electrical panel, plumbing rough-in, HVAC rough-in, and HCD certification. Price varies by square footage, finish level, and options.
Delivery and Placement: $1,500–$4,000
Costs depend on your distance from our facility and lot accessibility. Crane placement (for tight lots) adds cost. Most California deliveries fall in the $2,000–$3,000 range.
Site Preparation: $3,000–$15,000
The widest range and most variable category. Foundation ($2,000–$8,000), utility connections ($5,000–$8,500 combined), grading and drainage (if needed: $2,000–$8,000). The single biggest variable: how close your utilities are to the ADU site.
Total Project Cost Ranges
Simple lot, minimal site work: $28,000–$36,000. Average California lot: $36,000–$40,000. Complex lot: $52,000–$54,000. Still a fraction of the $120,000–$200,000+ cost of a custom ADU build in California today.
The $22,000 starting price is real — but it’s not the whole picture. Here’s an honest breakdown of what a prefab ADU costs from start to finish, including the numbers most builders don’t show you upfront.
The Unit Itself: $22,000–$35,000
Includes all structural framing, exterior cladding, roofing, windows, doors, interior finishes, cabinetry, fixtures, electrical panel, plumbing rough-in, HVAC rough-in, and HCD certification. Price varies by square footage, finish level, and options.
Delivery and Placement: $1,500–$4,000
Costs depend on your distance from our facility and lot accessibility. Crane placement (for tight lots) adds cost. Most California deliveries fall in the $2,000–$3,000 range.
Site Preparation: $3,000–$15,000
The widest range and most variable category. Foundation ($2,000–$8,000), utility connections ($5,000–$8,500 combined), grading and drainage (if needed: $2,000–$8,000). The single biggest variable: how close your utilities are to the ADU site.
Total Project Cost Ranges
Simple lot, minimal site work: $28,000–$36,000. Average California lot: $36,000–$40,000. Complex lot: $52,000–$54,000. Still a fraction of the $120,000–$200,000+ cost of a custom ADU build in California today.
FOR HOMEOWNERS
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USE CASES
Most customers come to us for one of these three things. Do any of these sound like you?
FOR HOMEOWNERS
Is a Backyard Office Worth It?
A Cost vs. Benefit Breakdown
Before you build a backyard office, you want to know if the numbers actually work. Here's an honest breakdown of what it costs
$1,800–$3,200/mo potential
FOR FAMILIES
From Booking to Move-In:
The 60-Day Kasita Timeline
60 days is achievable. Here is every phase from first site visit to move-in day — including where delays happen and how to avoid them.
From $22,000, no second mortgage
FOR REMOTE WORKERS
How Much Can You Earn Renting
a Backyard ADU in California?
The income potential from a backyard ADU varies by market, unit type, and rental strategy. Here are real numbers from California markets — and how to estimate what yours could earn.
From $21,500, adds property value
KasitaCrafters
Modern prefab tiny homes, DIY kits, and build plans — for California homeowners who want a real second structure without a $200,000 price tag.
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