CEQA Cultural Resources: What California Requires

CEQA does not name a survey requirement, but it requires the lead agency to determine whether the project may cause a substantial adverse change in the significance of a historical resource, and a records search plus survey is the ordinary way to support that determination with substantial evidence. An agency that approves a project without any information about what is on the site has an evidentiary problem.

In practice a lead agency in California will ask for a California Historical Resources Information System records search, a Native American Heritage Commission Sacred Lands File request, and a field survey where the site has any sensitivity. What varies from project to project is how deep that work goes.

Under Public Resources Code 21084.1 and CEQA Guidelines section 15064.5, a historical resource is a resource listed in or determined eligible for the California Register of Historical Resources, a resource included in a local register, or a resource identified as significant in a qualifying historical resources survey. A lead agency may also determine that any other resource is historically significant, based on substantial evidence.

Two points that get missed. Resources in a local register or a qualifying survey are presumed significant unless a preponderance of the evidence shows otherwise, which puts the burden on the party arguing the resource is not significant. And the absence of listing does not settle anything. Section 21084.1 says explicitly that not being listed “shall not preclude a lead agency from determining whether the resource may be an historical resource.”

They are parallel but not identical. The California Register criteria at Public Resources Code 5024.1(c) and 14 CCR 4852 are numbered (1) through (4): association with events significant in the broad patterns of local or regional history or California’s cultural heritage, association with persons important to local, California, or national history, embodiment of the distinctive characteristics of a type, period, region, or method of construction or the work of a master or high artistic values, and the potential to yield information important to prehistory or history.

The National Register uses letters A through D and its wording differs. California’s criteria expressly reach significance at the local level and California’s cultural heritage, which the federal criteria do not phrase the same way. Using federal letters for a California Register determination is a tell that a report was not written by someone who works here.

California also has no 50-year rule. 14 CCR 4852 allows listing a resource less than 50 years old where sufficient time has passed to understand its historical importance. Any California property listed in or formally determined eligible for the National Register is automatically included in the California Register.

Because there are two, and they differ in ways that matter. Public Resources Code 5020.1(q) defines substantial adverse change as “demolition, destruction, relocation, or alteration such that the significance of an historical resource would be impaired.” CEQA Guidelines section 15064.5(b)(1) defines it as physical demolition, destruction, relocation, or alteration of the resource or its immediate surroundings such that the significance would be materially impaired.

The Guidelines version is the one that governs CEQA analysis, and it does two things the statute does not. It brings the resource’s immediate surroundings into scope, so setting and context impacts count. And it sets a higher bar with “materially.” Section 15064.5(b)(2) then defines material impairment as adversely altering those physical characteristics that convey the resource’s significance and justify its eligibility.

Reports that quote one definition and cite the other are common, so it is worth checking which one yours uses.

No. CEQA Guidelines section 15064.5(b)(3) provides that a project following the Secretary of the Interior’s Standards for the Treatment of Historic Properties will generally be considered mitigated to a level of less than significant. Everything turns on that qualifier. The provision is a rebuttable presumption resting on a substantial-evidence finding that the project conforms to the Standards, and conformance is a technical judgment a preservation architect or architectural historian has to make and document.

The City of Los Angeles says so plainly in its own CEQA guidance, that compliance with the Standards is not the threshold of significance. An EIR that treats it as an automatic pass is the kind that gets litigated.

They are different tracks with different consequences, and the order of analysis is fixed. CEQA Guidelines section 15064.5(c) requires the lead agency to first determine whether an archaeological site is a historical resource. If it is, the historical-resource rules at Public Resources Code 21084.1 and Guidelines 15064.5(b) apply. Only if the site is not a historical resource does the agency ask whether it is a “unique archaeological resource” under Public Resources Code 21083.2. If it is neither, the effect is documented and no further CEQA analysis is required.

In California practice, most significant archaeological sites are handled as historical resources. Section 21083.2 is the fallback, not the main path. That matters because 21083.2(e) carries mitigation cost caps expressed as fractions of one percent of project cost and per-unit dollar figures that have not been updated since the provision was enacted and are effectively meaningless at current construction costs. Consultants who route everything through 21083.2 to invoke those caps are working from a statute the analysis rarely reaches.

One further point. Section 21083.2(h) says a nonunique archaeological resource “need be given no further consideration.” That is true as far as it goes, but a nonunique archaeological resource can still be a tribal cultural resource under Public Resources Code 21074(c), and that is the reason to keep looking.

Those are two separate questions, and the answer to the second is usually no.

AB 130 and SB 131, both signed June 30, 2025 and amended by SB 158 effective October 11, 2025, created a set of new CEQA exemptions. The largest is the infill housing exemption at Public Resources Code 21080.66. SB 131 added nine more, covering housing element rezoning, agricultural employee housing, community water systems, wildfire risk reduction, broadband in local rights-of-way, public parks and non-motorized trails, day care centers and certain health facilities and food banks, advanced manufacturing in industrial zones, and high-speed rail passenger facilities.

For an AB 130 infill project, the exemption removes the CEQA document but leaves the underlying investigation in place. Public Resources Code 21080.66(b)(4)(A) requires the local government to impose any enforceable agreements reached in consultation as conditions of approval, and 21080.66(b)(4)(B) requires it to impose all seven of the following unless the tribe and the applicant agree otherwise:

• Tribal monitoring during all ground-disturbing activities, upon request by a tribe, with a tribe-designated monitor compensated at a reasonable rate that aligns with customary rates for cultural resource monitoring (clause (i)).
• Avoidance of tribal cultural resources where feasible, per Public Resources Code 21084.3(a), with deference to tribal preferences for spiritual, ceremonial, and burial sites (clause (ii)).
• Culturally appropriate treatment and documentation of tribal cultural resources (clause (iii)).
• A California Historical Resources Information System archaeological records search and a tribal cultural records search for the project site (clause (iv)).
• A Sacred Lands Inventory request to the Native American Heritage Commission (clause (v)).
• Compliance with Health and Safety Code 7050.5 and Public Resources Code 5097.98 on discovery of human remains, including immediate work stoppage and consultation with the affected tribe (clause (vi)).
• Application of tribal ecological knowledge to any habitat restoration the project undertakes, as applicable to its environmental context (clause (vii)).

Add the consultation process described in AB 130’s tribal consultation track and a CEQA-exempt infill project can have a longer cultural resources critical path than a small project with a mitigated negative declaration. San Francisco’s own supplemental application for the exemption states that tribal consultation there takes 150 days on average.

The SB 131 exemptions work differently and the asymmetry is worth knowing. None of the nine carries a tribal consultation track or cultural resources conditions. Several are gated on not being located on “natural and protected lands,” but that is a habitat screen, not a cultural resources screen. An SB 131 exemption can eliminate the CEQA document and, with it, the AB 52 trigger, with nothing substituted.

Less than the language suggests. Public Resources Code 21080.66(a)(7) disqualifies a project that “requires the demolition of a historic structure that was placed on a national, state, or local historic register before the date a preliminary application was submitted.”

Read what that leaves out. A resource that is eligible but not listed does not disqualify a project. Neither does an impact short of demolition, so alteration, relocation, and setting or context impacts to a listed structure are outside the gate. Neither are archaeological resources of any kind. The gate is much narrower than CEQA’s ordinary historical resource analysis, and describing the exemption as protecting historic resources overstates it substantially.

SB 158, effective October 11, 2025, is the cleanup bill for the 2025 reform package, and a page describing AB 130 and SB 131 without it is already out of date. It reduced the site cap for builder’s-remedy projects from 5 acres to 4 acres, clarified that the 30-day approval clock runs from the later of the conclusion of tribal consultation or the consistency determination, made filing a notice of exemption mandatory with the county clerk and the Governor’s Office of Land Use and Climate Innovation, and refined the treatment of natural and protected lands. It made no substantive change to the tribal consultation provisions.

No. There is no SHPO concurrence step in CEQA and no CEQA submittal to the State Office of Historic Preservation. OHP’s regulatory review functions are Section 106 of the National Historic Preservation Act and Public Resources Code 5024 and 5024.5, which apply to state agencies and state-owned land. The lead agency makes the CEQA determination.

A consultant who tells you to “submit to SHPO for CEQA clearance” is describing a step that does not exist, and a schedule built around waiting for it will slip. The error is common enough to cause real delay.

Public Resources Code 5024 and 5024.5 do create obligations, but they fall on state agencies. Those agencies evaluate resources under their jurisdiction, maintain an inventory, and consult with the SHPO where a project may affect historical resources on state-owned land.

Public Resources Code 21080.1, added by SB 131, addresses a housing development that would qualify for a statutory exemption or one of several categorical exemptions but for a single condition. Where that is the case, CEQA review is limited to the environmental effects caused solely by that condition. The agency prepares a negative declaration, mitigated negative declaration, or EIR focused only on that condition, and an EIR may omit the alternatives analysis and the growth-inducing impacts analysis.

A near-miss project still prepares one of those documents, which means the AB 52 trigger is still met and AB 52 consultation should still apply. We have not found a published source addressing this squarely, so treat it as our reading rather than settled law, and raise it with counsel on a project where it matters.

Proposition 45, the Building an Affordable California Act, is on the November 3, 2026 ballot. It would add a new chapter to CEQA setting deadlines for “essential projects,” a category covering housing, drinking water, hospitals and public health, clean energy, transportation infrastructure, wildfire prevention, and broadband.

Most of the measure is structural: 30 days to determine application completeness, 365 days for an EIR and 180 for a negative declaration, 90 days for an exemption determination, public comment shortened to 15 or 30 days, an administrative record limited to specified categories, an alternatives analysis limited to three alternatives instead of a reasonable range, impacts assessed against compliance with formally adopted standards in effect at application, litigation filed within 30 days and completed within 270, and courts empowered to enjoin only the non-compliant part of a project rather than rescinding approvals.

The measure also contains its own tribal consultation section, and it deserves attention. Proposed section 21016 would require an applicant to give written notice to consulting tribes before submitting an application, participate in informal engagement on request, and follow the existing AB 52 provisions for formal consultation, with mitigation agreements reduced to enforceable writing.

The definition is where it gets interesting. Proposition 45 would define a “Consulting Tribe” by reference to the federal list maintained under the Federally Recognized Indian Tribe List Act of 1994. That is narrower than CEQA’s existing definition at Public Resources Code 21073, which reaches every tribe on the Native American Heritage Commission contact list, including tribes without federal recognition. California would then have a third operative definition of which tribes get consulted, alongside AB 52’s and AB 130’s. For a project sponsor, the alternatives limit and the record limit are the near-term planning concerns. For anyone doing this work, the definitional divergence is the part to watch.