Duplex ADU Model
1,862 sq ft / 1,2 and 3 Bed /2 Bath
Transforming a cramped space into a spacious, modern living area that maximizes comfort and style.
Complete Project Investment
ADU Unit
$300,000 (exl. sales tax)
Planning & Permitting
$15,000
Delivery with Crane
$6,000-$9,000
Assembly/Installation
$16,000
Site Work & Utilities
$35,000-$40,000
Total Investment Range
$275,000-$400,000
Cost Per Square Foot
$199-$215
Complete Project Investment
ADU Unit
$300,000 (exl. sales tax)
Planning & Permitting
$15,000
Delivery with Crane
$6,000-$9,000
Assembly/Installation
$16,000
Site Work & Utilities
$35,000-$40,000
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Total Investment Range
$275,000-$400,000
Cost Per Square Foot
$199-$215
Steel Framing & Walls
Earthquake, hurricane & fire resistant
Bamboo Fiber Interior
No drywall, prevents mold/bacteria
Stone Countertops
Premium finishes throughout
ENERGY Star AC
Efficient climate control in every room
10-Foot Ceilings
Spacious, open feel
Double-Pane Windows
Energy efficient with natural light
Extra-Large Closets
Multi-thousand dollar value per bedroom
Beautiful Interiors
Multiple design options available
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Installation Process
Total Timeline
25 weeks from contract to move-in ready
Permits & Planning
Manufacturing
Site Preparation
Delivery & Installation
Final Inspections
Why Choose This Model
The duplex configuration is an ideal investment-focused ADU solution designed to maximize both space and rental potential. With two independent units, it offers flexibility for multi-generational living or long-term and short-term rentals.
At 1,862 square feet total, this model delivers efficient land use while providing two well-sized living spaces. The dual-unit layout helps reduce vacancy risk, increases income potential, and supports strong returns in today’s competitive Los Angeles market.
Investment Performance
ROI Timeline
4–6 year payback period through combined rental income from two units
Property Value Addition
$600,000–$800,000 based on current Los Angeles market rates and comparable ADU valuations
Net Equity Gain
$300,000–$500,000 after total project investment (estimated, market-dependent)
Rental Demand
Strong demand for dual-unit configurations with lower vacancy risk and diversified rental income
Development Advantages
This duplex model maximizes your development investment by delivering two income-producing units within a single, efficient footprint. Designed for strong market demand, it leverages streamlined modular construction and high-quality materials to ensure long-term asset value. Our modular process preserves strong property value while reducing build time and complexity, delivering faster completion, predictable costs, and enhanced rental performance through dual-unit flexibility.
Ideal Applications
Duplex ADU developments targeting dual-unit rental income
Property owners seeking increased cash flow from a single footprint
Investors looking to maximize land use efficiency and ROI
Multi-generational or flexible housing solutions with separate living units
Financing & Service Options
Flexible Solutions for Every Development Strategy
We understand that every project has unique requirements and financial considerations. Casden Development offers comprehensive service packages and financing solutions designed to accommodate different development approaches, contractor relationships, and investment timelines. Our transparent pricing structure ensures predictable project costs with no surprise fees, while our financing partnerships provide access to capital that makes immediate project execution possible.
Service Packages
Complete Turnkey
Full project management, permits to keys
ADU + Delivery
For customers with preferred contractors
Custom Solutions
Flexible arrangements available
Financing Options
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Zero Down Available with equity lines of credit
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Bulk Purchase Discounts for multiple units
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Disaster Victim Discounts available
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Transparent Pricing - no hidden fees