Trade SpecificsCalifornia Focus

California ADU Builders: How to Get a Steady Stream of ADU and SB 9 Projects

California made it easier than ever to build an ADU. Here's how ADU builders position themselves as the local expert and land the serious homeowners ready to spend.

BG

Brett Gourvennec

Founder & Operator, NEXO Marketing

7 min read•Sep 06, 2026
California made it easier than ever to build an ADU, and homeowners have noticed. Between SB 9, the state's streamlined ADU rules, and local grants, there's a steady stream of homeowners who want to add a unit for family, rental income, or extra space. The ADU builders winning those jobs aren't the cheapest — they're the ones the homeowner found first.

1. ADU homeowners are ready to spend

An ADU is a big project — anywhere from $100K to $400K — and the homeowners looking into one are usually serious. They've already looked at their lot, checked the zoning, and started budgeting.

That means the ADU builder who shows up first with a clear process is in a great spot to win the job.

2. Local rules make local experts

ADU rules change city by city in California — setbacks, height limits, permitting timelines. The homeowners who know this want a builder who knows their city's process.

When you speak directly to your area — San Diego, Los Angeles, Sacramento, wherever you work — you attract homeowners who want a contractor who already knows the local playbook.

  • Speak to your specific cities and their ADU rules.
  • Show past ADU projects from the area.
  • Be the builder who knows the local permitting process.

Key Takeaway

ADUs aren't a fad in California. The builders who position themselves as the local ADU expert now will be the ones homeowners call for years.

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