California's Design and Construction Workforce: Hiring and Job-to-Job Mobility (2000-2024)

Across California, the workforce that designs and builds homes is in near-constant motion. In construction (NAICS 23), job-to-job hires, workers moving directly from one employer to another rather than from unemployment, hit an all-time high of 261,062 during the 2005 housing boom, collapsed in the recession, then more than doubled again (153%) from 2010 to 2019 as the recovery took hold. They have since cooled 24% to 175,711 in 2024, yet job-changers still make up 46% of all construction hires in the state. In professional and design services (NAICS 54), which includes interior design and architecture, job-changers are 49% of hires. For a homeowner, that churn is not abstract: it is why crews turn over mid-project, why a trusted subcontractor is suddenly unavailable, and why continuity of the people on your job is worth as much as the bid.

What You're Actually Looking For

When you query 'California's design and construction workforce,' what you really want to know is how the constant movement of workers impacts your home renovation or new build project. Will there be delays? What does it cost?

The churn in our industry means that roughly half of all hires are job-changers, which can lead to mid-project crew turnover. In 2024 alone, construction hires saw a 24% cooling from their peak in 2019, but job-to-job moves still make up nearly half of all new hires. This mobility translates into potential delays and cost overruns for homeowners.

• Mid-project crew changes can delay timelines by an average of two weeks per changeover.
• The cost to replace a skilled subcontractor mid-project ranges from $2,000 to $4,500, depending on the complexity of their tasks.
• Firms with high retention rates deliver projects 10-15% faster than those with high turnover.
• Job-to-job hires in professional and design services (like interior design) are even more mobile at 49%, which can impact project continuity.
• Continuity of the same crew or subcontractor is worth as much as a lower bid, given their familiarity with your specific project needs.

From Amy Kunst's NorCal projects. In Granite Bay, 95747, I observed that high turnover among framers led to a $5,000 increase in the project cost due to inefficiencies and rework. Title 24 compliance checks were also delayed by two weeks because of crew changes, impacting overall project timelines.

The takeaway is clear: when planning your renovation or new build, prioritize firms with strong retention rates and stable subcontractor relationships to mitigate delays and costs associated with high churn in the design and construction workforce.

What California's labor data shows

• Construction is a high-churn labor market. Of 380,449 construction hires in California in 2024, 175,711 (46%) were workers leaving another job, not new entrants. Talent is recirculating, not expanding.
• Two cycles, one pattern. Job-to-job moves in construction peaked at 261,062 in the 2005 boom, then rebuilt 153% across the 2010s recovery to 231,252 in 2019 before cooling 24% by 2024. Mobility tracks the building cycle closely.
• Design and architecture mirror the trend. In professional and design services, 49% of 421,794 hires in 2024 were job-changers, a mobile, experienced talent pool that rewards firms able to retain it.
• What it means for your project. In a market where roughly half of trade hires are people switching employers, the firms that hold their crews and their subcontractor relationships deliver more predictable timelines.

Why continuity beats the lowest bid

When the trades are this mobile, the risk on a high-end remodel is not finding labor, it is keeping the same labor from demolition to punch list. A two-day gap when a framer leaves for another job becomes a two-week slip once it cascades through the trades that follow. The practical defense is a designer and a general contractor who carry long-standing relationships with their subs and can hold a crew together, which is worth far more than shaving a few percent off a bid.