Competitively Priced, Custom Accessory Dwelling Units For Homeowners in Sunnyvale, CA

Maximize Your Silicon Valley Property with a Turnkey Backyard Cottage or Multi-Generational In-Law Suite

Are you in need of a licensed and fully insured full-service builder?

As a licensed and fully insured full-service builder, Sunrooms N More has been trusted by homeowners throughout Sunnyvale, California, and the greater South Bay since 2008. Backed by over 23 years of specialized construction and home improvement experience, we are putting our master-level structural expertise to work for you by engineering high-performance, premium accessory dwelling units (ADUs).

An accessory dwelling unit is a secondary, standalone housing structure built right on your single-family residential lot. Ranging from efficient 300 sq. ft. studio spaces to expansive 1,200 sq. ft. multi-bedroom cottages, every ADU we build is fully equipped with independent plumbing, a complete kitchen, dedicated bathrooms, bedrooms, and structural living areas.

Why Sunnyvale Homeowners are Building ADUs

Unlock Long-Term Financial Stability & Functional Utility

Sunnyvale properties sit on some of the most competitive real estate lines in the country. Adding an ADU to your backyard is a powerful strategy to elevate your lifestyle and secure your financial future:

01

Generate High-Yield Passive Rental Income

Many local homeowners build detached ADUs specifically as luxury rental properties to offset high South Bay living costs, mortgages, and property taxes. Because the Silicon Valley tech rental market remains incredibly robust, a premium backyard dwelling provides an immediate, vital financial cushion. Some homeowners even choose to downsize into the modern ADU themselves while renting out their main residence to maximize rental revenue.

02

Cost-Effective Housing for Extended Family

An ADU offers an elegant, respectful way to house aging parents or adult children. These “granny flats” or in-law cottages provide loved ones with a completely independent, private residence while keeping them close by for daily peace of mind—saving thousands compared to senior living facilities or separate regional apartments.

03

Substantial Property Equity Gains

Beyond immediate lifestyle or rental benefits, a custom, site-built ADU significantly accelerates your property’s overall market valuation, turning your underutilized backyard square footage into a high-earning structural asset.

The Custom vs. Prefab Advantage

The Custom-Built Advantage: Superior Quality at a Competitive Value

At Sunrooms N More, we set ourselves apart from franchise builders pushing mass-produced, rigid prefabricated kits. Pre-fab units heavily restrict your design choices and rarely adapt to Sunnyvale’s specific zoning constraints, yard profiles, or aesthetic architectural guidelines.

Instead, we focus entirely on custom, site-built ADUs engineered precisely for your property. To make the design journey effortless, we offer pre-architected base floor plans across a range of configurations. You can use these layouts as a perfect launchpad to customize your custom finishes, or we can sketch an entirely bespoke design from scratch.

Best of all, our optimized structural building practices and direct manufacturer connections allow us to deliver these 100% tailored, site-built solutions at price points that are frequently lower than the standard pre-fabricated models offered elsewhere.

Turnkey Project Management

Your One-Stop Turnkey Builder: From Permitting to Hand-off

Navigating the Sunnyvale Community Development Department require absolute technical precision regarding setbacks, maximum lot coverage, and strict California Title 24 energy standards. Sunrooms N More eliminates the stress of coordinating multiple sub-contractors by taking single-source ownership of your build.

We manage every phase in-house:

Custom Architectural Drafting & 3D Concept Mockups
Structural Engineering & Title 24 Energy Submissions
Sunnyvale Building Division Plan Checks & Permit Management
Site Excavation, Grading, & Utility Tie-Ins
Concrete Foundations & Heavy Structural Framing
Complete Mechanical Trades (Electrical, Plumbing, HVAC)
Insulation, Drywall, Custom Cabinetry, & High-End Interiors
Premium Exterior Roofing, Siding, and Trim Matching Your Main Home

Every aspect of your project is handled directly by our highly trained, in-house experts. Once we break ground, your project becomes our sole, undivided focus. We never split our crews or walk away to juggle other regional jobs, allowing us to carefully safeguard your timeline and guarantee impeccable craftsmanship.