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What is considered public works in California
Under Labor Code section 1720, a public work is construction, alteration, demolition, installation or repair done under contract and paid for in whole or in part out of public funds. Prevailing wages apply once the project is over $1,000. Above $25,000 for construction work, or $15,000 for maintenance, contractors must also be registered with DIR and file certified payroll online.
Checked on October 24, 2026 against the Labor Code on leginfo.legislature.ca.gov (sections 1720, 1720.3, 1725.5, 1771, 1771.1, 1771.4, 1774, 1775) and DIR's public works pages. Published October 25, 2026. This page describes the rules; DIR's Director makes formal coverage decisions.
What counts as public works under Labor Code 1720
Section 1720(a) lists eight kinds of work. The first is the one most projects fall under: "Construction, alteration, demolition, installation, or repair work done under contract and paid for in whole or in part out of public funds" (Labor Code 1720). The same paragraph stretches "construction" to cover design, site assessment, feasibility studies, inspection and land surveying, "regardless of whether any further construction work is conducted," and post-construction work "including, but not limited to, all cleanup work at the jobsite." Installation includes assembling and taking apart modular office systems.
The rest of the list adds work for irrigation, utility, reclamation and improvement districts; street, sewer and other improvement work done under the authority of a public body; carpet laying in public buildings or under a public building lease-maintenance contract; certain public transportation demonstration projects; California Advanced Services Fund infrastructure grants; and tree removal on a covered project. Section 1720.3 adds hauling refuse away from a public works site and, when the driver's work is "integrated into the flow process of construction," hauling paving, grading and fill materials onto it (Labor Code 1720.3).
Maintenance is covered too. Section 1771 says it "is applicable to contracts let for maintenance work," and also that it does not apply to "work carried out by a public agency with its own forces" (Labor Code 1771).
What "paid for out of public funds" means
Section 1720(b) counts six forms of public money. Any one of them is enough.
| # | Form of public funding (LC 1720(b)) |
|---|---|
| 1 | Money or its equivalent paid by the state or a political subdivision to, or on behalf of, the contractor, subcontractor or developer |
| 2 | Construction work done by the state or political subdivision as part of the project |
| 3 | Transfer of an asset of value for less than fair market price |
| 4 | Fees, costs, rents, insurance or bond premiums, loans or interest rates that are paid, reduced, charged below fair market value, waived or forgiven |
| 5 | Money loaned by the state or political subdivision that is repaid on a contingent basis |
| 6 | Credits applied by the state or political subdivision against repayment obligations to it |
"Public funds" include federal money as well as state and local money (8 CCR 16000, quoted in the Labor Commissioner's Public Works Manual, section 2.5.1). Federally funded projects that a California awarding body controls are covered by state law; projects "awarded by and under the complete control of the federal government" are not (DIR public works FAQ). The Davis-Bacon comparison covers what happens when both laws apply.
What is not public works
Section 1720(c) and (d) carve out several kinds of project even when some public money is involved. The ones that come up most:
- Private homes on private land. "Private residential projects built on private property are not subject to this chapter unless the projects are built pursuant to an agreement with a state agency, a redevelopment agency, a successor agency … or a local public housing authority" (1720(c)(1)).
- Required public improvements on a private development. If a city requires a developer to build a public improvement as a condition of approval, pays no more than that work costs and holds no ownership interest in the project, "only the public improvement work" is covered (1720(c)(2)).
- De minimis subsidies. A public subsidy that is both less than $600,000 and less than 2% of total project cost doesn't make a private project a public work. For a project made up entirely of single-family homes, the test is less than 2% alone (1720(c)(3)).
- Some affordable housing and shelter projects, such as self-help housing where buyers do at least 500 hours of the construction work, and mortgage, down payment or single-family rehabilitation assistance given to a household (1720(c)(5)).
If the answer still isn't clear, an awarding body or any interested party can ask DIR's Director for a written coverage determination (DIR FAQ, Q13). Requests go to DIR's Legal Unit at pwcoverage@dir.ca.gov (public works FAQ), and past decisions since 2002 are published online.
California public works thresholds: $1,000, $15,000, $25,000 and $30,000
Project value is the prime contract with the awarding body. Obligations switch on as the amount rises.
| Project value | What applies | Source |
|---|---|---|
| Over $1,000 | Prevailing wages for all workers employed on the project, plus keeping certified payroll records and producing them on request | LC 1771, LC 1776 |
| $15,000 or less, maintenance | No DIR registration, no electronic certified payroll; records kept at least three years after the work | LC 1725.5(f), LC 1771.4(a)(4) |
| $25,000 or less, construction, alteration, demolition, installation or repair | Same small project exemption | Same |
| Above those amounts | Every contractor and subcontractor must be DIR-registered to bid, be listed in a bid or work; the awarding body registers the project; eCPR to the Labor Commissioner at least monthly | LC 1771.1, LC 1771.4 |
| $30,000 and up | DIR's apprenticeship requirements | DIR public works |
Two DIR rules decide how you measure the amount. First, the small project figure "is for the entire contract between the Awarding Body and the Prime Contractor." A $10,000 subcontract on a $400,000 job gets no exemption. Second, "the law does not permit jobs to be parceled in order to avoid the $1,000 threshold"; if an agency knows its yearly work with one vendor will pass the threshold, that vendor must register (DIR public works FAQ).
DIR's prevailing wage FAQ adds one more case: an awarding body that runs a DIR-approved labor compliance program on every project it awards doesn't have to require prevailing wages on construction projects of $25,000 or less, or alteration, demolition, repair or maintenance projects of $15,000 or less (FAQ, Q15).
DIR public works contractor registration
Anyone who bids on or contracts for work that requires prevailing wages is a public works contractor, including subcontractors and sole proprietors "even if they do not have employees" (DIR FAQ). To register, a contractor needs workers' compensation coverage, a CSLB license where the trade requires one, no delinquent wage or penalty assessments, and no debarment, and it can use only registered subcontractors (Contractor Registration; LC 1725.5(a)).
| Item | Amount | Source |
|---|---|---|
| Registration for one, two or three fiscal years (July 1 to June 30) | $400 / $800 / $1,200 | DIR |
| First-time registrant that bid, was awarded or worked public works in the past 12 months | $2,000 penalty | DIR; LC 1725.5(a)(2)(E) |
| Late renewal, lapse accidental / not accidental | $400 / $2,000 | DIR |
| Working on a public work while unregistered | $100 a day, up to $8,000 | LC 1771.1(g) |
| Higher-tier contractor that used an unregistered subcontractor | $100 a day, up to $10,000 | LC 1771.1(h) |
The Labor Commissioner also issues a stop order barring the unregistered contractor from all public works until it registers, and its workers are paid at their regular prevailing rate for up to 10 days of lost work (LC 1771.1(j)). Payment by credit card posts in under 24 hours; other methods can take up to eight weeks. You can check any contractor's status through DIR's Public Works Website Services.
Who pays prevailing wages on a public works project
The employer of each worker pays. Section 1774 says the contractor "and any subcontractor under him, shall pay not less than the specified prevailing rates of wages to all workmen employed in the execution of the contract" (LC 1774). DIR reads "in the execution of" broadly: coverage "is not necessarily limited to work performed at the construction site by those in traditional construction trades" (FAQ).
The prime contractor carries part of the risk for its subs. Under section 1775(b), a prime avoids penalties for a subcontractor's underpayment only if it didn't know of it and it did four things: put the prevailing wage sections in the subcontract, monitored the sub's certified payroll, acted to fix any underpayment it learned of (including holding back money), and got a signed affidavit of payment from the sub before final payment (LC 1775). Penalties run up to $200 per worker per day of underpayment. The floor is $40, unless the error was a good-faith mistake corrected promptly; $80 if the contractor was assessed penalties on another contract in the past three years; and $120 if the Labor Commissioner finds the violation willful.
The awarding body has its own duties: it must register the project with DIR within 30 days of award (FAQ) and report suspected violations to the Labor Commissioner (LC 1726).
Next steps on a covered job
- Look up the rate for each trade by county from California prevailing wage rates, or build a job sheet with the rate sheet tool.
- Price the crew with the crew cost estimator.
- Set up payroll reporting: DIR certified payroll (eCPR).
- Workers can compare a paycheck to the posted rate with the pay check tool.
Quick answers
When does prevailing wage apply in California?
On public works over $1,000: construction, alteration, demolition, installation or repair done under contract and paid for in whole or in part out of public funds (Labor Code 1720 and 1771). Maintenance work let by contract is covered too.
Do small public works projects need DIR registration?
Not at $25,000 or less for construction, alteration, demolition, installation or repair, or $15,000 or less for maintenance. Prevailing wages are still owed above $1,000, and certified payroll records must be kept and produced on request (Labor Code 1725.5(f), 1771.4(a)(4)).
Are private homes public works?
Not when they are private residential projects built on private property, unless they are built under an agreement with a state agency, a redevelopment or successor agency, or a local public housing authority (Labor Code 1720(c)(1)).