Expert ADU Construction & Design in Sacramento Area — OnSum Home Renovation
Whether you need extra space for loved ones or a smart way to generate steady monthly income, a custom Accessory Dwelling Unit (ADU) is the ultimate home upgrade. Add value, rental income, and flexible living space to your property. OnSum Home Renovation Inc. is your trusted Sacramento-area contractor for Accessory Dwelling Unit (ADU) construction — from permit to move-in.
💰 Generate Steady Passive Income: Turn your backyard into a cash-flowing asset by renting your ADU to long-term tenants or traveling professionals.
🏡 Keep Family Close (With Total Privacy): Perfect for aging parents who want a modern, accessible, single-story space, or adult children saving for their own future.
📈 Massive Equity Boost: Add high-value liveable square footage that instantly increases your property’s overall market value.
📜 Fast-Tracked & Streamlined: Current streamlined laws mean faster permit approvals and zero local development impact fees for many units!Add value, rental income, and flexible living space to your property. OnSum Home Renovation Inc. is your trusted Sacramento-area contractor for Accessory Dwelling Unit (ADU) construction — from permit to move-in.
Why Choose OnSum as Your ADU Partner?
As an OnSum HouseCare Member, your ADU project gets priority scheduling, member pricing, and a dedicated consultant from day one. Join free today.
- Licensed & Insured California General Contractor
- Sacramento-area ADU specialists
- Transparent pricing — no surprise costs
- End-to-end service: design, permits, construction, inspection
- Dedicated project manager for your build
- Quality craftsmanship with clean job sites
- Members get priority scheduling and preferred pricing
- Custom Architectural Plans & Design
- City Permitting Hand-offs
- Complete Ground-Up Premium Construction
Our ADU Models
Click any model below to see floor plan details, specifications, and pricing.
The Pre-Approve Studio 367 – 367 sq ft | Studio | 1 Bath
An pre-approved efficient, modern studio ADU, ideal for rental income or a guest suite.
Starting at $84,000
The Pre-approved 559 – 559 sq ft | 1 Bed | 1 Bath
A comfortable one-bedroom with dedicated living and sleeping areas, perfect for family members or long-term tenants.
Starting at $115,500
The Pre-Approved 747 – 747sq ft | 1 Bed | 1 Bath
Spacious single-bedroom ADU with an open kitchen, dining nook, and oversized bathroom.
Starting at $147,000
The Studio 400 – 400 sq ft | Studio | 1 Bath
An efficient, modern studio ADU ideal for rental income or a guest suite.
Starting at $84,000
The Casita 550 – 550 sq ft | 1 Bed | 1 Bath
A comfortable one-bedroom with dedicated living and sleeping areas, perfect for family members or long-term tenants.
Starting at $115,500
The Retreat 700 – 700 sq ft | 1 Bed | 1 Bath
Spacious single-bedroom ADU with an open kitchen, dining nook, and oversized bathroom.
Starting at $147,000
The Duplex 900 – 900 sq ft | 2 Bed | 1 Bath
A versatile two-bedroom layout that maximizes rental potential. Separate bedrooms with ample storage.
Starting at $189,000
The Premier 1000 – 1,000 sq ft | 2 Bed | 2 Bath
Premium two-bedroom, two-bath ADU with a modern open-concept design. High-end finishes throughout.
Starting at $210,000
The Estate 1170 – 1,170 sq ft | 3 Bed | 2 Bath
Our largest model — a full three-bedroom home on your property. Ideal for multigenerational families.
Starting at $252,000
Ready to Start Your Sacramento ADU Project?
From permits to final build — OnSum handles everything. Sacramento homeowners trust us for transparent pricing, local expertise, and end-to-end service.
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Pre-Approved Models
Faster permits, less waiting
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Transparent Pricing
Starting at $84K, no surprise costs
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End-to-End Service
Design, permits, construction
Or call us at (279) 272-8280
Ready to Build Your ADU?
Contact OnSum Home Renovation Inc. today for a free consultation. We’ll walk you through permits, timelines, and which model fits your property and budget.
Call: (279) 272-8280