Architect vs draftsman vs building designer in California

California's architecture law doesn't stop anyone from preparing plans, drawings or specifications for these (B&P Code §5537). The engineering law has the same list (B&P Code §6737.1):

• A single-family house of wood-frame construction, no more than two stories plus a basement.
• Wood-frame housing of no more than four units, no more than two stories plus a basement. This doesn't allow several four-unit clusters on one lot that add up to more than four units.
• Garages and other structures that go with those buildings, also wood-frame and no more than two stories plus a basement.
• Wood-frame farm and ranch buildings, unless the local building official finds an undue risk to public health, safety or welfare.

Whether your project falls in this range depends on the building and the design. Ask your designer, and expect the building department to have the final say on any part that isn't conventional framing.

The exemption has a limit. If any part of the building departs from the conventional wood-framing requirements in the state building code, the local building official must require plans, drawings or calculations for that part from a licensed architect or engineer. Those documents must carry the stamp and signature of the person responsible for them (§5537(b), §6737.1(b)).

So a designer may draw your project while a structural engineer stamps the parts that need it. Before you sign, ask who that will be and look them up on the engineer license lookup.

Not finding a license is not proof that anyone broke the law. The designer may be working within the exemption above. What the law does prohibit is someone without a license practicing architecture beyond it, or calling themselves an architect or an “architectural designer” (B&P Code §5536).

Useful questions:

• Does my project fall within the exemption, and why?
• Which parts need a licensed stamp, and who will provide it?
• What is that person's license number?

More in questions to ask an architect.

A drafter (also called a draftsman) prepares technical floor plans, elevations, and construction drawings using CAD or BIM software. In California, “drafter,” “draftsman,” and “building designer” are job descriptions, not state licenses. Neither the California Architects Board (CAB) nor the Board for Professional Engineers, Land Surveyors, and Geologists (BPELSG) issues a drafter or building designer license.

Legally, an independent drafter in California operates under the exact same B&P Code §5537 and B&P Code §6737.1 rules as an unlicensed building designer. A drafter may draw permit plans for a single-family wood-frame home or a wood-frame building of up to four units (no more than two stories plus a basement), provided the framing follows conventional wood-frame tables in the building code.

In San Francisco practice, many independent drafters focus on measuring existing homes (“as-built” drawings) and producing permit sheets for straightforward interior remodels or over-the-counter (OTC) applications at the Department of Building Inspection (DBI). When a project removes a load-bearing wall, adds a garage ADU moment frame, or triggers non-conventional structural work, the drafter either works under the direct supervision of a licensed architect or hands the structural sheets to a licensed civil or structural engineer to calculate, sign, and stamp (B&P Code §5537(b), §6737.1(b)).

One San Francisco exception to watch for: if your property sits in the Edgehill Mountain Slope Protection Area or the Northwest Mt. Sutro Slope Protection Area, San Francisco Building Code Section 106A.3.2 Exception 2 requires plans for new buildings or significant envelope increases to be prepared by a state-licensed architect, land surveyor or engineer, even when state law would otherwise exempt the building.

In everyday use, yes. When people in California say “registered architect” or “licensed architect,” they mean the same thing: an individual who holds a current, active license from the California Architects Board with a California architect license number beginning with “C” (for example, C-34567). The legal title in California is “licensed architect.” The board’s FAQ says an architect’s stamp may not say “registered architect” (CAB licensee FAQ, B&P Code §5536.1(b)).

Some states use the term “registered architect” (RA) in their statutes, while California’s Architects Practice Act (B&P Code §5500 et seq.) uses “architect” and “license.” Under B&P Code §5536(a), it is a misdemeanor for anyone without an active California architect license to call themselves a “licensed architect,” a “registered architect,” or simply an “architect.” It is also a misdemeanor for them to use a stamp or seal that bears “State of California” or implies a state license (B&P Code §5536(b)).

Don’t confuse “registered architect” with an AIA membership credential or a national NCARB certificate. Holding an NCARB record or an out-of-state registration does not authorize someone to practice architecture in California until they hold an active California license listed on the California architect license lookup.

No, not in California unless they hold an active architect license. B&P Code §5536(a) makes it a misdemeanor for an unlicensed person to use any term confusingly similar to “architect,” or to advertise in a way that might tell the public they are an architect or an “architectural designer.”

The California Architects Board’s Building Official Information Guide is explicit on this point. An unlicensed person may not call themselves an “architectural designer,” may not offer architectural services, and may not advertise under headings such as “architect,” “architectural design,” or “architectural drafting.” The same guide says they may advertise as a “building designer,” as long as they don’t claim to be “registered” or licensed by the state. Other common titles are “residential designer,” “home designer,” and “drafter.”

If a candidate’s proposal or website calls them an “architectural designer” or says “architectural design studio,” look up their name on the architect license lookup. If no license exists, ask them directly whether they hold a California architect license and who will stamp any structural or non-exempt sheets on your permit set. See our full guide on when you actually need an architect in California.

Statutes quoted from the official California Legislative Information site, checked Nov 5, 2026. This is general information, not legal advice.