Prefabricated ADU Solutions
Compare top manufacturers and find the perfect prefab ADU for your property
Why Choose a Prefab ADU?
Faster Construction
Most prefab ADUs can be installed within days or weeks, compared to months for traditional construction.
Predictable Costs
Fixed pricing and standardized designs help eliminate unexpected expenses and budget overruns.
Quality Control
Factory construction ensures consistent quality and weather-protected assembly.
Eco-Friendly
Reduced waste, efficient materials use, and often built with sustainable practices.
Top Prefab ADU Manufacturers
Boxabl
Size: 375-400 sq ft
Starting Price: $49,500
Installation Time: 1-2 days
Delivery: Nationwide
The Boxabl Casita is a fully-featured home that unfolds from a shipping container. Includes full kitchen, bathroom, living area, and bedroom space.
- 20' x 20' footprint
- 9'6" ceiling height
- Full-size appliances
- Energy-efficient design
- Stackable for multi-unit configurations
Villa
Size: 400-800 sq ft
Starting Price: $99,000
Installation Time: 2-4 weeks
Delivery: California only
Villa offers customizable prefab ADUs designed specifically for California properties, with streamlined permitting and local code compliance.
- Multiple floor plans available
- Title 24 compliant
- Solar-ready design
- Permit assistance included
- California factory location
Plant Prefab
Size: 310-1,200 sq ft
Starting Price: $179,000
Installation Time: 4-8 weeks
Delivery: West Coast
Plant Prefab specializes in sustainable, high-design ADUs with extensive customization options and LEED-certified construction.
- Architect-designed models
- Net-zero energy capable
- Premium finishes available
- Smart home integration
- Custom options available
Abodu
Size: 340-500 sq ft
Starting Price: $189,000
Installation Time: 2-3 weeks
Delivery: California & Washington
Abodu offers premium prefab ADUs with a streamlined approval process and white-glove service from start to finish.
- Scandinavian design
- All-inclusive pricing
- Pre-approved in many cities
- Turnkey installation
- 10-year warranty
Feature Comparison
| Feature | Boxabl | Villa | Plant Prefab | Abodu |
|---|---|---|---|---|
| Base Price | $49,500 | $99,000 | $179,000 | $189,000 |
| Minimum Size | 375 sq ft | 400 sq ft | 310 sq ft | 340 sq ft |
| Customization | Limited | Moderate | Extensive | Moderate |
| Permit Support | Basic | Full Service | Full Service | Full Service |
| Installation Included | No | Yes | Yes | Yes |
| Warranty | 1 Year | 5 Years | 10 Years | 10 Years |
| Financing Available | Yes | Yes | Yes | Yes |
Frequently Asked Questions
How long does it take to get a prefab ADU?
The timeline varies by manufacturer but typically includes:
- Design and permitting: 2-4 months
- Manufacturing: 2-3 months
- Site prep and installation: 2-4 weeks
Total timeline usually ranges from 4-8 months, significantly faster than traditional construction.
Are prefab ADUs cheaper than traditional construction?
While base prices for prefab ADUs may seem similar to traditional construction, they often prove more cost-effective when considering:
- Reduced labor costs
- Shorter construction timeline
- Fewer unexpected expenses
- Lower soft costs
Additionally, many prefab manufacturers offer predictable, all-inclusive pricing.
Can prefab ADUs be customized?
Customization options vary by manufacturer:
- Some offer fully custom designs
- Others provide preset options for finishes and layouts
- Most allow selection of exterior materials and colors
- Interior fixtures and appliances can usually be upgraded
More customization typically means higher costs and longer timelines.
What site preparation is needed?
Required site preparation typically includes:
- Foundation installation
- Utility connections
- Access for delivery and crane
- Permits and inspections
Most manufacturers will assess your site and provide specific requirements.
Ready to Explore Prefab ADU Options?
Let us help you find the perfect prefab ADU solution for your property.