California Construction Law Glossary

Parties and Project Scope

Core California construction terms

A party’s role and the scope of the work can change who receives a notice, which rights may be available, and which deadlines apply.

Direct Contractor

Also called a prime contractor

In California construction law, a direct contractor is a contractor that has a direct contractual relationship with an owner. Notice duties, payment obligations, and available remedies can differ for a direct contractor, a subcontractor, a supplier, and a lower-tier claimant.

Statutory reference: California Civil Code section 8018

Claimant

A holder of qualifying statutory payment rights

A claimant is a person or business with a right under California’s construction payment statutes to record a claim of lien, give a stop payment notice, or assert a claim against a payment bond. Eligibility is not automatic for every project participant. It depends on the work provided, the contractual relationship, the project type, and compliance with the rules for the remedy pursued.

Statutory reference: California Civil Code section 8004

Work of Improvement

The project scope recognized by statute

A work of improvement can include all or part of a project involving construction, alteration, repair, demolition, site improvement, or the installation of equipment or machinery. Identifying the relevant work of improvement can affect notice coverage, completion dates, and payment remedies.

Statutory reference: California Civil Code section 8050