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Typical ADU Investment Ranges
- Garage Conversion ADU: $50000 – $150,000
- Attached ADU: $80,000 – $250,000
- Detached ADU: $130,000 – $400,000+
Accessory Dwelling Unit (ADU) Guide for Southern California Homeowners
california SB 543: Stop Waiting on City Hall: Our 2026 “Fast-Track” Process
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FAM Promotions, Inc. DBA ACT Construction
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California Licensed General Contractor – License #883252
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Serving Southern California Since 1993
Fast-Track Permitting
california SB 543: Stop Waiting on City Hall: Our 2026 "Fast-Track" Process
Building an ADU or converting your garage in California just got faster. Thanks to Senate Bill 543, homeowners now have legal protection against bureaucratic delays. At ACT Construction, we leverage these new laws to get your project out of “permit limbo” and into construction.
The 15-Day “Completeness” GuaranteeUnder the new 2026 laws, the city no longer has months to “review” your paperwork.
15-Day Shot Clock
Once we submit your application, the city has exactly 15 business days to determine if it’s complete.
Automatic Approval
No "Moving Goalposts
If the city asks for corrections, they must provide an exhaustive list. They cannot legally add new objections later in the process.
Built-In Savings for Small ADUs
Are you looking to build a rental unit or a guest suite?
Zero School Fees
If your ADU is under 500 sq. ft. of interior livable space, you are now 100% exempt from school impact fees.More Livable Space: The 2026 laws now measure ADUs by interior space only. This means we can often build a larger footprint than before while still staying under the “fee-exempt” limits, potentially saving you $10,000+ in impact fees.
More Livable Space
The 2026 laws now measure ADUs by interior space only. This means we can often build a larger footprint than before while still staying under the “fee-exempt” limits, potentially saving you $10,000+ in impact fees.
Frequently Asked Questions
Smart Space Transformation
Converting our unused garage into a living area was a fantastic decision. The space now feels bright, comfortable, and functional. It added extra room for our family while improving the overall layout and usefulness of our home.
Perfect Extra Living Space
Our garage conversion turned an empty storage area into a beautiful guest suite. The design feels natural with the rest of the house. It’s comfortable, practical, and gives us valuable additional living space.
Great Home Upgrade Experience
The garage conversion exceeded our expectations. The new room feels spacious and well designed. It’s now used as a home office and lounge, making our house more functional and enjoyable every day.
Functional And Stylish Room
Transforming the garage created a stylish and comfortable living space. The layout flows nicely with the rest of the home. It’s now one of the most useful and frequently used areas in our house.
Amazing Use Of Space
Our garage conversion made a huge difference in how we use our home. What was once wasted space is now a bright, welcoming room that adds both comfort and practicality to daily living.
Comfortable And Modern Addition
The converted garage looks and feels like a natural part of the house. The space is modern, cozy, and very practical. It gave us the extra room we needed without expanding the main structure.
