Our Services
Accessory
Dwelling Units
Add value, generate income, and create space for family — fully permitted ADUs built to Silicon Valley's highest standards.
Our Services
Add value, generate income, and create space for family — fully permitted ADUs built to Silicon Valley's highest standards.
What Is an ADU?
An Accessory Dwelling Unit (ADU) is a fully self-contained living space on the same lot as your primary home. Whether it's a detached cottage, a garage conversion, or a basement unit — ADUs are one of the smartest investments a California homeowner can make.
They generate rental income, provide housing for aging parents or adult children, and significantly increase your property's value. California's updated ADU laws have made them easier and faster to build than ever before.
At Level Up Home Builders, we've built over 200 ADUs across Silicon Valley. We handle everything — design, permits, construction — so you can enjoy the benefits without the stress.
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Why Build an ADU
Silicon Valley rental rates are among the highest in the nation. A well-built ADU can generate $2,500–$4,500/month in rental income, paying for itself within years.
ADUs consistently add significant value to your property — often returning 150% or more of construction costs when you sell.
Keep family close while maintaining privacy. ADUs are perfect for aging parents, adult children, or live-in caregivers who need their own independent space.
Create the perfect dedicated workspace or creative studio — separate from your home, but steps from your door.
Recent California legislation has significantly streamlined ADU approvals. Many ADUs now qualify for ministerial approval — faster timelines, less bureaucracy.
Use it as a rental today, a guest suite tomorrow, and a home office next year. ADUs adapt to your life as your needs change.
Why Level Up
We handle design, engineering, permits, and construction under one roof. No coordinating multiple contractors — just one trusted team from start to finish.
We know every city's ADU requirements across Silicon Valley. Our permit success rate is 100% — we've never had an ADU permit denied.
Your quote is locked in from day one. No surprise charges or mid-project cost increases — what we quote is exactly what you pay.
Our streamlined process and deep permit knowledge means we build ADUs faster than the competition without ever cutting corners on quality.
Every ADU we build is designed to complement your primary home and lot — not a cookie-cutter box, but a thoughtfully crafted living space.
We build ADUs that attract quality tenants and command top rents — durable finishes, modern kitchens, in-unit laundry, and great natural light.
Our Work
Every ADU we build is unique — here's a selection of completed projects from across the Bay Area.
What We Build
We build every type of ADU — from ground-up detached units to clever conversions of existing space.
A fully separate structure in your backyard — the most popular and most valuable type of ADU, with complete privacy for both occupants.
Built as an addition to your existing home — sharing a wall but with a separate entrance, kitchen, and living space.
Transform your existing garage into a beautiful, fully permitted living space — one of the most cost-effective ADU options available.
A smaller unit (up to 500 sq ft) created within your existing home's footprint — often converted from a bedroom or converted garage.
Convert an underused basement into a comfortable, private living space with its own entrance — ideal for rental or family use.
Maximize your square footage by building up — a two-story ADU delivers more living space while keeping a smaller footprint on your lot.
What You Need to Know
California has some of the most ADU-friendly laws in the country. Here's what you need to know — and we handle all of it for you.
Detached ADUs can be up to 1,200 sq ft. JADUs are limited to 500 sq ft. Two-story ADUs are allowed in most cities with proper setbacks.
Most cities require a 4-foot setback from side and rear property lines for detached ADUs. We know every city's specific requirements.
California law prohibits cities from requiring replacement parking when a garage is converted to an ADU — making conversions much simpler.
Most ADU permits are now approved within 60 days. Our experience with local jurisdictions often results in faster approvals.
California suspended owner-occupancy requirements through 2025, allowing non-owner-occupied properties to build ADUs and rent both units.
How It Works
From your first call to move-in day — here's exactly what to expect when you build with Level Up.
We visit your property, assess feasibility, discuss your goals, and give you a clear picture of what's possible on your lot.
We design your ADU, handle all engineering, and submit for permits. We manage every city interaction so you don't have to.
Our experienced crew builds your ADU with precision and care, keeping you updated every step of the way.
We pass all inspections, walk you through the finished unit, and hand over your keys — ready for occupancy or rental.
Client Story
Common Questions
Get Started
Schedule a free site assessment today — we'll tell you exactly what's possible on your property.