California Construction Law Glossary
Plain-language definitions for the 55 California construction-law terms that come up most often in licensing, lien, payment, defect, and litigation matters. Each entry includes a primary statutory or case citation where one is directly on point. This glossary is published by Bay Legal PC (Jayson Elliott, CA Bar No. 332479) as a reference for owners, contractors, subcontractors, suppliers, and the attorneys who advise them.
The substantive guides at Mechanic's Lien Law, Contractor Licensing Law, Contractor Payment Law, and Construction Defect Law explain how these concepts work in practice. For city-specific procedural information — which courthouse, which county recorder, which CSLB intake office — see the California city directory.
A
Arbitration
A private dispute-resolution process in which a neutral arbitrator hears evidence and issues a binding (or sometimes non-binding) decision in place of a trial. Most California residential construction contracts include arbitration clauses; the Federal Arbitration Act and Code of Civil Procedure §1281 et seq. govern enforceability.
Code Civ. Proc. §§1280–1294.4
Arbitration Clause
A contract provision requiring the parties to resolve disputes by arbitration rather than in court. For consumer construction contracts, California courts will enforce these clauses unless the agreement is procedurally and substantively unconscionable.
Code Civ. Proc. §1281
B
Bid Bond
A surety bond posted by a contractor bidding on a public-works project, guaranteeing that the contractor will enter into the contract if awarded the job. If the winning bidder refuses to contract, the public agency can claim against the bond for re-bid costs.
Pub. Contract Code §10160 et seq.
Bond Claim
A formal demand against a payment bond, license bond, or performance bond. The claim procedure and deadlines depend on the bond type: license-bond claims through CSLB; private-works payment-bond claims under Civil Code §8600 et seq.; public-works payment-bond claims under Civil Code §9550 et seq.
Civ. Code §§8600, 9550
BPC §7031
California Business and Professions Code §7031 — the statute that bars an unlicensed contractor from suing to collect compensation for work that required a license, and allows an owner to recover all sums paid to the unlicensed contractor. The most punitive licensing statute of any U.S. state.
BPC §7159
California Business and Professions Code §7159 — the Home Improvement Contract statute. Requires that any home-improvement contract over $500 be in writing, contain specific disclosures, and limit down payments to $1,000 or 10% of the contract price, whichever is less.
Bus. & Prof. Code §7159
BPC §7160
California Business and Professions Code §7160 — gives a homeowner a civil cause of action for damages caused by a contractor's willful or fraudulent misrepresentation, and authorizes reasonable attorney's fees. A frequent companion claim to §7031 disgorgement.
Bus. & Prof. Code §7160
C
Certified Payroll
A weekly payroll record that public-works contractors must submit to the awarding body and the California Department of Industrial Relations (DIR), certifying that each worker was paid the applicable prevailing wage. Failure to file certified payroll can trigger DIR enforcement and stop-work orders.
Lab. Code §1776
Change Order
A written modification to the construction contract that changes scope, price, or schedule. California courts strongly prefer written change orders signed by both parties; under SB 440 (effective 2026), a defined notice-and-response process now applies to disputed change orders on private works.
Civil Code §8460
The California statute giving a lien claimant 90 days from the date of recording to file a lien-foreclosure lawsuit. Miss the deadline without a recorded extension and the lien expires by operation of law and must be released.
Civ. Code §8460
Construction Defect
A failure of a building or component to perform as required — structural, water-intrusion, soil-related, mechanical, electrical, or finish. California categorizes defects as patent (apparent on reasonable inspection) or latent (not discoverable until later), each with different limitations periods.
Civ. Code §896
CSLB
The Contractors State License Board — the California agency that licenses, regulates, and disciplines construction contractors statewide. Headquartered at 9821 Business Park Drive, Sacramento, with field offices in Fresno, Oakland, San Bernardino, San Diego, and San Francisco, and intake-mediation centers in Norwalk and Sacramento.
CSLB Complaint
A formal complaint filed against a licensed or unlicensed contractor with the Contractors State License Board. Routed to Norwalk Intake & Mediation Center for job sites in Imperial, Los Angeles, Orange, Riverside, San Bernardino, San Diego, or Ventura counties; to Sacramento for all other CA counties.
Bus. & Prof. Code §7090
D
Demand Letter
A pre-litigation written demand from one party to another asserting a claim and requesting payment or other relief by a stated date. Not a statutory prerequisite to suit in California construction matters, but routinely used to satisfy contractual notice provisions and trigger insurance coverage.
Design Professional
An architect, landscape architect, engineer, or land surveyor licensed under California law. Design professionals have a separate, narrower lien right than contractors under Civil Code §8302 et seq., independent of whether construction actually commences.
Civ. Code §8302
DIR
The California Department of Industrial Relations — the state agency that sets and enforces prevailing wage rates on public works, oversees certified payroll, and houses the Division of Labor Standards Enforcement (DLSE).
Disgorgement
Under BPC §7031, the statutory remedy allowing a person who hired an unlicensed contractor to recover the entire amount paid for work requiring a license — even if the work was performed satisfactorily. No setoff is permitted for the value of materials or labor provided.
Bus. & Prof. Code §7031(b)
F
Final Payment
The last payment under a construction contract, typically released after substantial completion, punch-list completion, and (on private works) recording of a notice of completion. California law caps retention released with final payment at 5% under SB 61 (2026).
Bus. & Prof. Code §7108.5
G
General Contractor
Also "prime contractor" — the contractor with a direct contractual relationship with the project owner, responsible for executing the work and (typically) hiring subcontractors. Holds a Class B license under CSLB classification (or Class A for general engineering work).
16 CCR §832.02
H
Home Improvement Contract (HIC)
A contract between a homeowner and a contractor for work on existing residential property where the total contract price is more than $500. Must comply with the form, content, and down-payment limits of BPC §7159, including a three-day right to cancel.
Bus. & Prof. Code §7159
L
Latent Defect
A construction defect not apparent on reasonable inspection. California Code of Civil Procedure §337.15 sets a 10-year statute of repose on latent defects — measured from substantial completion of the improvement — after which no claim can be brought regardless of when the defect is discovered.
Code Civ. Proc. §337.15
License Bond
The $25,000 surety bond every California-licensed contractor must maintain with CSLB as a condition of licensure. Consumers can claim against the bond for damages caused by violations of the Contractors State License Law; the claim window is generally one year from the act or completion.
Bus. & Prof. Code §7071.5
License Classification
The CSLB designation of the trade a contractor is licensed to perform: Class A (general engineering), Class B (general building), Class B-2 (residential remodeling), and 40+ specialty C-classes (e.g., C-10 electrical, C-36 plumbing, C-39 roofing). A contractor working outside their classification may be treated as unlicensed for that work.
Bus. & Prof. Code §7055; 16 CCR §832
Lien Foreclosure Suit
A civil action filed by a mechanic's lien claimant to enforce the lien against the property, leading to a court-ordered sale if the lien is not paid. Must be filed within 90 days of lien recording under Civil Code §8460 or the lien expires.
Civ. Code §8460
Lien Priority
The order in which liens recorded against a property are paid from sale proceeds. Mechanic's liens generally take priority back to the date work commenced, which can place them ahead of construction loans recorded after work began — a result no construction lender wants.
Civ. Code §8450
M
Mechanic's Lien
A security interest in real property that a contractor, subcontractor, supplier, or other authorized claimant can record to secure payment for labor, services, equipment, or materials furnished to improve the property. Governed by California Civil Code §§8000–8848.
Mediation
A facilitated, non-binding settlement process led by a neutral mediator. Many California construction contracts require mediation as a condition precedent to litigation or arbitration. Civil Code §1542 releases are commonly required as part of any mediated settlement.
Evid. Code §§1115–1129
N
Notice of Cessation
A recorded notice declaring that work on a project has stopped before completion. Recording a notice of cessation starts a shorter (30- or 60-day) lien-recording window than would otherwise apply under the default 90-day rule.
Civ. Code §8188
Notice of Completion
A recorded notice declaring that a work of improvement is substantially complete. Recording it accelerates the mechanic's lien deadline for non-direct contractors from 90 days to 60 days, but only if recorded within 15 days of actual completion.
Civ. Code §8182
O
Owner
Under California mechanic's lien law, the person or entity holding legal title to the property or other recorded interest in the property as defined in Civil Code §8082. An "owner" for lien purposes can include long-term lessees and others with sufficient recorded interest.
Civ. Code §8082
P
Patent Defect
A construction defect that is apparent on reasonable inspection — the opposite of latent. California Code of Civil Procedure §337.1 sets a four-year statute of repose for patent defects, much shorter than the 10-year repose for latent defects under §337.15.
Code Civ. Proc. §337.1
Pay-If-Paid
A contract provision purporting to make the general contractor's obligation to pay a subcontractor contingent on the GC receiving payment from the owner. California disfavors strict pay-if-paid clauses; Wm. R. Clarke Corp. v. Safeco Insurance (1997) 15 Cal.4th 882 held they may be unenforceable as against public policy.
Clarke v. Safeco, 15 Cal.4th 882 (1997)
Pay-When-Paid
A contract provision providing the general contractor a reasonable time to pay a subcontractor after the GC receives payment from the owner. Distinct from pay-if-paid: courts treat "pay-when-paid" as a timing provision, not a condition precedent.
Clarke v. Safeco, 15 Cal.4th 882 (1997)
Payment Bond
A surety bond guaranteeing payment to subcontractors, laborers, and material suppliers on a construction project. Required on most California public works under Civil Code §9550; available (but not statutorily required) on private works under §8600 et seq.
Civ. Code §§8600, 9550
Performance Bond
A surety bond guaranteeing that a contractor will complete the work in accordance with the contract. If the contractor defaults, the bonding company must either complete the work or pay the obligee the costs to complete. Standard on California public works.
Pub. Contract Code §10221
Preliminary Notice
The 20-day notice that almost every potential mechanic's lien or stop-payment-notice claimant other than the direct contractor must serve on the owner, prime contractor, and construction lender to preserve claim rights. Late service forfeits lien rights for amounts furnished more than 20 days before notice.
Civ. Code §8200
Prevailing Wage
The hourly wage and benefit rate determined by the California Department of Industrial Relations that contractors must pay workers on most public works projects. Rates vary by trade, county, and project type. Underpayment can trigger DIR penalties and debarment.
Lab. Code §§1771, 1773
Progress Payment
A periodic payment made during construction based on percentage of completion or scheduled milestones, as distinct from final payment. California's prompt-payment statutes (BPC §7108.5 and Civil Code §8800 et seq.) cap the time within which progress payments must be released downstream.
Bus. & Prof. Code §7108.5
Prompt Payment
California's statutory framework requiring timely payment to contractors, subcontractors, and suppliers — generally seven days from receipt of payment up the chain for private works, with statutory interest and penalties for noncompliance.
Bus. & Prof. Code §7108.5; Civ. Code §8800
Public Works
A construction project paid for in whole or part with public funds. Triggers prevailing-wage obligations, payment-bond and performance-bond requirements, and a different stop-payment-notice and lien framework (Civil Code §§9000–9566) than private works.
Lab. Code §1720
Q
Qualifying Individual (RMO/RME)
The person CSLB recognizes as the responsible managing officer (RMO) or responsible managing employee (RME) for a contractor licensee, who must demonstrate the trade experience the license requires. The qualifier is personally responsible for the licensee's compliance with the Contractors State License Law.
Bus. & Prof. Code §§7068, 7068.1
R
Release Bond
A surety bond posted to remove a recorded mechanic's lien from a property. Filing the bond in an amount equal to 125% of the lien claim substitutes the bond for the lien as security and frees title to sell or refinance.
Civ. Code §8424
Retention
A percentage of payment withheld from each progress payment until project completion, used as a contractor-side incentive to finish punch-list and close-out. SB 61 (effective Jan. 1, 2026) caps retention at 5% on most California private works.
S
SB 440
California Senate Bill 440, effective January 1, 2026, codifying a change-order claims process on private works: a defined notice protocol, response window, and documentation requirements for disputed change orders. Reduces the risk that contested work goes uncompensated.
SB 61
California Senate Bill 61, effective January 1, 2026, capping retention on most private-works construction contracts at 5%. Parties can still negotiate lower retention; what they can no longer do is contract for a higher percentage.
Bus. & Prof. Code §7108.5
SB 800
California Senate Bill 800 (2002), codified as the Right to Repair Act in Civil Code §895 et seq. Sets the procedural and substantive framework for residential construction defect claims on new homes sold after January 1, 2003.
Civ. Code §895 et seq.
Small Claims Court
The California Small Claims Division of the Superior Court hears civil disputes up to $12,500 for individuals ($6,250 for businesses). A useful venue for low-dollar construction disputes; lawyers cannot appear at the initial small-claims hearing on a party's behalf.
Code Civ. Proc. §116.221
Statute of Limitations
The maximum time after an event within which a lawsuit must be filed. Key construction-relevant California limitations periods: four years for written contract (CCP §337); two years for oral contract (CCP §339); four years for patent defects (CCP §337.1); ten years for latent defects (CCP §337.15, a repose).
Code Civ. Proc. §§337, 337.1, 337.15, 339
Stop Payment Notice
A claimant's written notice to a construction lender or owner demanding that project funds be withheld to satisfy the claim. Functions as a parallel remedy to the mechanic's lien on private works (Civil Code §8500 et seq.) and on public works (§9350 et seq.).
Civ. Code §§8500, 9350
Subcontractor
A contractor working under a direct contract with the prime contractor (rather than with the owner). Has full mechanic's lien and stop-payment-notice rights, but typically must serve a 20-day preliminary notice under Civil Code §8200 to preserve them.
Civ. Code §8200
Substantial Completion
The point at which a construction project is sufficiently complete that the owner can occupy or use it for its intended purpose, even if punch-list items remain. Starts the clock on certain warranty, lien, and statute-of-repose periods.
Substantial Compliance
A narrow doctrine letting an otherwise-unlicensed contractor recover under BPC §7031 if four statutory conditions are met: prior valid licensure, proper notice to the licensing agency of inadvertent lapse, reasonable diligence to maintain licensure, and that the noncompliance did not jeopardize public welfare.
Bus. & Prof. Code §7031(e)
Supplier
Also "material supplier" or "materialman" — a person who furnishes materials or equipment to a construction project. Has full preliminary-notice and lien rights but no right to file a stop payment notice unless meeting specific statutory criteria.
Civ. Code §8024
Surety Bond
A three-party agreement in which a surety company guarantees the obligations of a principal (the contractor) to an obligee (the owner, public agency, or consumer). Common construction bonds: license bond, bid bond, payment bond, performance bond, release bond.
U
Unlicensed Contractor
A person performing acts that require a contractor's license under BPC §7026 without holding a current, valid license. Cannot collect compensation under BPC §7031(a), is subject to disgorgement under §7031(b), and may face criminal misdemeanor charges under §7028.
Bus. & Prof. Code §§7026, 7028, 7031
Legal Information Disclaimer
This page is legal information, not legal advice. Definitions are summaries written for general understanding and do not capture every nuance of the underlying statute or case. Citations are current as of April 2026. Verify statutory text at leginfo.legislature.ca.gov before relying on a deadline. More about Bay Legal PC's California construction practice at baylegal.com.
Last reviewed: April 2026 · Jurisdiction: California · Responsible attorney: Jayson Elliott, CA Bar No. 332479, Palo Alto, Santa Clara County
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