California Owner-Builder Exemption: Rules, Limits and Sale Presumption

California lets some property owners build or improve their own property without a contractor license. The rule is the owner-builder exemption in Business and Professions Code section 7044, and it is narrower than most people expect. It depends on whether you intend to sell, who does the work, and how long you have lived in the home.

This guide walks through the three exemptions, the one-year sale presumption, the duties you take on when you sign a permit application, and the point where a project needs a licensed contractor. For the licensing rules that apply to every California contractor, start with our California contractor license guide.

At a glance Source: Business and Professions Code section 7044, amended effective January 1, 2017. Principal residence: 12 months of living in the home before the work is finished, and no more than two structures in any three-year period. New homes: no more than four single-family structures built for sale in a calendar year, with licensed trade contractors doing the work. Sale presumption: a sale or offer to sell within one year of completion is presumed to mean you built it for sale. Licensing threshold for anyone you hire: $1,000 in labor and materials combined.

The three owner-builder exemptions

Section 7044(a) lists the situations where the contractor licensing law does not apply to an owner. Each has its own conditions, and an owner has to fit one of them, not a blend of all three.

A fourth item in the statute covers a nonprofit that assists an owner-builder in a mutual self-help housing program. It is rare, and most homeowners will never use it.

The second exemption has a limit that catches developers. It does not apply when the owner hires a general contractor, so an owner who wants to sell more than four homes a year is expected to be licensed. The Contractors State License Board (CSLB) describes the same rule in its owner-builder checklist: sales are capped at four a year for new single-family construction, and the cap falls away if you contract with a General Building contractor.

The one-year sale presumption

Selling soon after you finish is the fastest way to lose the exemption. Section 7044(b) sets two presumptions that apply in any action under the licensing law.

1. Sale within one year. If you sell or offer to sell a structure within one year after completion, the law presumes you built it for sale. You can rebut that presumption, but you carry the burden.
2. Five or more sales. If you sell or offer to sell five or more structures within one year of completion, the presumption is conclusive. You cannot rebut it.

If your plan from day one is to sell, the own-use exemption is the wrong fit. Read the second exemption instead, or hire a licensed contractor to build.

What you promise when you sign the permit application

Most cities and counties ask an owner-builder to sign a statement with the permit application. Section 7031.5 requires every permit applicant to state that they hold a license, or to give the basis for the exemption they claim. A violation by a permit applicant carries a civil penalty of up to $500.

The CSLB checklist adds the practical meaning. By signing as an owner-builder you accept responsibility for every phase of the project and for the integrity of the work. You supervise the job, schedule the workers, request inspections, and correct anything that fails an inspection. The checklist specifically flags one problem: telling the building department you will do the work yourself and then hiring unlicensed workers to do it.

You become an employer the moment you hire

An owner-builder who pays workers directly is treated as an employer. The CSLB checklist lists the obligations.

• Register with the state and federal agencies as an employer.
• Withhold income and Social Security taxes, pay disability insurance, and make employment compensation contributions.
• Provide workers' compensation insurance.
• Ask your insurer whether your liability coverage needs to go up.
• Pay every worker and material supplier, because unpaid parties can file mechanics liens against your property.

Skipping these steps is where owner-builders get hurt. Our guide to the California contractor workers' compensation exemption explains how coverage works for licensed contractors, and the same insurance questions apply when an owner takes on workers.

Hiring licensed contractors on your project

The exemption never lets you hire an unlicensed contractor. Under CSLB guidance, anyone who bids on or contracts for work of $1,000 or more in labor and materials combined must hold a CSLB license, and any job that needs a permit or workers requires a licensed contractor. Consultants who bid on projects or supervise subcontractors must be licensed too.

Before you sign with anyone, check the license on the CSLB website or by phone, and compare the license to the photo ID. The state's rules on unlicensed work got tougher this year; see California's new contractor laws for 2026 for what changed. For the line between small repairs and licensed work, read contractor vs handyman.

A practical order of operations

Owners who do this well follow a simple sequence. None of it replaces advice from your building department, which issues the permit and sets local forms.

1. Pick the exemption that fits. Decide whether you are improving your principal residence, building for your own use, or building to sell with licensed trades.
2. Check your history. If you used the principal residence exemption before, count the structures in the last three years.
3. Verify every contractor. Look up each license before you sign, and confirm any job of $1,000 or more is going to a licensed company.
4. Set up as an employer if you hire workers. Register, arrange workers' compensation and keep payroll records.
5. Sign the permit statement carefully. Claim only the exemption you actually meet, and keep a copy.
6. Keep records. Receipts, lien releases and inspection sign-offs protect you if you sell.

When a project has outgrown the exemption

Some signs that you should stop owner-building and move to a licensed company:

• You plan to sell within a year of finishing, or you are building more than four homes in a calendar year.
• You do not live in the home, or you have used the exemption on two structures in the last three years.
• The job needs a trade you cannot supervise, and you are tempted to use an unlicensed crew.
• You want to build as a business, taking jobs for other owners.

A business that builds for others needs a California contractor license, and the license needs a qualifying individual. In California that person is the Responsible Managing Employee (RME) or Responsible Managing Officer (RMO). Our California RME and RMO guide explains the roles. Companies without someone who meets the experience rule can place a full-time W-2 qualifier. See what a qualifying agent is, and when you are ready, hire a qualifying agent or compare options on the consultation packages page.

Frequently asked questions

Can I build my own house in California without a license? Yes, if you fit section 7044. For a new single-family home you must not intend to sell it, and work you do not do yourself must be done by employees paid wages only, or by licensed trade contractors you hire directly.

Can I sell the house after I finish? You can, but selling or offering it within one year raises a presumption that you built it for sale. Talk to a California construction attorney before you list.

How long must I live in the home for the principal residence exemption? CSLB states 12 months before the work is completed, and the exemption can be used on no more than two structures in a three-year period.

What does it cost to put a qualifier on my license? It varies with the license class, the state, the risk profile of the company and the scope of the work. Pricing is quoted after a review of your situation, so start on the consultation packages page.

Does the exemption apply to commercial buildings? Section 7044 speaks of owners improving their own property. Check your project against the statute with an attorney or the CSLB before you rely on it for anything other than your own home.

Talk with a licensing specialist

Marshall Schofield and Jeremiah Jaskulski built The Licensing Company to help contractors get licensed and stay compliant. If your project is moving from owner-builder work to a real contracting business, talk with us before you take your first paying customer.

Sources

• Business and Professions Code section 7044 (Justia)
• Business and Professions Code section 7031.5
• CSLB Checklist for Owner-Builders

This guide is general information, not legal advice. Statutes and board guidance change, so confirm current rules with the CSLB or an attorney.