Your Property Has More Potential Than You Think
You have a backyard sitting empty, a garage collecting dust, or a spare room that could be earning rent and California’s ADU laws have never made it easier to act. At Tiny Home Builders California, we design and build accessory dwelling units across California for homeowners who want rental income, multigenerational space, or lasting property value. CSLB-licensed, fully insured, and ADU-specialized for 25 years.
In Business
Rated
Across All Trades
Liability Coverage
Licensed & Insured
Satisfaction Guarantee
Most California homeowners who qualify don’t realize it until they ask. Here are the clearest signals your lot is ready.
A rear yard of 800 square feet or more is often enough for a detached ADU in California. If your backyard holds little more than a lawn or storage, that space can legally become a rentable dwelling without touching your primary home.
California rents average $2,200–$3,500 per month depending on the market. An ADU generates that income on a property you already own, without selling equity or taking on a second mortgage. It is one of the highest-return improvements available to California homeowners.
Multigenerational households are growing across California. An ADU gives a parent, adult child, or caregiver their own entrance, kitchen, and privacy close enough to help, separate enough to live independently.
Permit timelines in California cities average 4–12 weeks. The sooner you start the design and submission process, the sooner your unit is generating income or housing family. Every quarter of delay is a quarter of lost return.
Tiny Home Builders California handles every ADU type permitted under California law. We assess your lot, your goals, and your budget then recommend the approach that delivers the best outcome.
A fully separate structure built in your rear or side yard, independent of the main home. Detached ADUs offer the most privacy for tenants or family members and typically command the highest rental rates. We handle foundation, framing, utilities, and finish work from the ground up.
An addition connected to your primary residence, sharing at least one wall. Attached ADUs are ideal when lot coverage limits prevent a fully separate structure. They integrate with your home's existing systems, which can reduce utility connection costs while still delivering a fully independent living unit.
An existing attached or detached garage converted into a permitted dwelling unit. California law specifically streamlined garage conversions no replacement parking is required in most jurisdictions. We handle structural upgrades, insulation, HVAC, plumbing, and all Title 24 energy compliance requirements.
A smaller unit created within the existing footprint of your primary home up to 500 square feet. JADUs require minimal construction, move through permitting quickly, and are an excellent entry point for homeowners who want rental income with the lowest upfront investment.
Not sure which approach fits your property? We assess first and recommend only what is necessary no upsells.
Building an ADU involves design, permitting, and construction we manage all three so you never have to chase a city planner or a subcontractor.
We visit your property, review zoning and lot coverage, and develop a design that meets California Building Code and your local jurisdiction’s requirements. Call us at (213) 320-4079 to schedule your assessment.
Our in-house permit team prepares and submits all documentation architectural plans, Title 24 energy reports, structural calculations, and utility coordination. We track every submission and respond to city comments without involving you.
Once permits are approved, our CSLB-licensed crew begins construction. You receive weekly progress updates and a single point of contact throughout the build. No subcontractor surprises, no communication gaps.
We schedule and pass all city inspections, obtain your certificate of occupancy, and walk you through the completed unit. Your ADU is ready to rent or move into fully permitted and guaranteed.
Every project manager, designer, and crew member on our team works exclusively on accessory dwelling units. That focus means faster permitting, fewer errors, and a finished product built by people who have solved every ADU challenge California throws at a project.
We handle every step of the California permit process in-house design, Title 24 compliance, city submission, and inspection coordination. You never chase paperwork or interpret city feedback on your own.
Your project price is locked before construction begins. No surprise change orders, no scope creep, no budget anxiety. What we quote is what you pay in writing, before we break ground.
Every contract includes a written completion date. If we miss it without a documented cause, you receive a daily credit. We build accountability into the agreement because we know California homeowners have been burned by vague timelines before.
ADU pricing in California is honest when you know the factors. We give you a fixed-price proposal not a range that doubles by the time you get a final invoice.
Construction type matters most: a JADU conversion starts around $80,000–$120,000, while a new detached ADU typically runs $150,000–$250,000 depending on size, finishes, and site conditions. Key cost drivers include square footage, foundation type, utility connection distance, local permit fees, and finish level. Seismic zone requirements in California also affect structural costs in ways that out-of-state builders routinely underestimate.
We provide a detailed cost estimate after your land evaluation and design consultation, at no charge. Call (213) 320-4079 to schedule yours. You’ll leave with real numbers, not a ballpark.
Real Reviews from Real California Homeowners
Most ADU projects in California range from $80,000 for a JADU conversion to $250,000+ for a new detached unit. Size, finishes, and site conditions are the primary variables. We provide fixed-price proposals after a site assessment.
From design to certificate of occupancy, most projects take 6–12 months. Permitting typically runs 4–12 weeks depending on the city; construction runs 3–6 months depending on ADU type and complexity.
Most single-family residential lots in California qualify under current state law. Minimum lot size requirements were significantly reduced in 2020. Call (213) 320-4079 — we assess your lot at no charge.
A detached ADU is a fully separate structure on your lot, up to 1,200 sq ft. A JADU is created within your existing home's footprint, capped at 500 sq ft. JADUs permit faster and cost less; detached ADUs command higher rents.
Yes — all ADUs require a building permit. California law requires cities to approve ADU permits ministerially (no discretionary review) within 60 days, which has significantly accelerated the process statewide.
Yes. Once you receive your certificate of occupancy, your ADU is legally rentable immediately. California removed owner-occupancy requirements for ADU rentals in 2020.
We specialize exclusively in ADUs — no divided attention across project types. Fixed-price contracts, in-house permit management, and a written completion guarantee mean your project finishes on time and on budget.
Tiny Home Builders California has built custom homes across California for 25 years, is CSLB-licensed, transparently priced, and backed by a 10-year structural warranty. Your consultation is free, and you’ll leave with real numbers.
Contact Tiny Home Builders California
