Permit Sonoma | Code enforcement drones

Why this page is different

Almost every surveillance program on this site belongs to a police department or a sheriff, and sits inside a body of California law written for exactly that: usage policies, published inventories, annual reports, a governing body that has to vote in public. Permit Sonoma is a permitting agency. Its Code Enforcement Section investigates unpermitted sheds and zoning breaches. None of the police surveillance statutes reach it.

That is the whole point of the page. A county built an aerial surveillance capability, pointed it at private homes, and the machinery the state built for overseeing that kind of thing did not apply, because the department flying the drones is not a police department.

Everything below comes from two court filings, and both are quoted as what they are: one side’s allegations, and the other side’s denial.

What the complaint alleges

The lawsuit was filed on 4 June 2025 in Sonoma County Superior Court by three county residents suing solely as taxpayers. They ask the court to declare the warrantless drone program unconstitutional under Article I, sections 1 and 13 of the California Constitution, and to require a warrant before future flights. The complaint states that they “do not assert any claim or defence in this action with respect to any enforcement proceeding brought by the County”.^[1]

On the program’s scale, the complaint draws on the agency’s own flight log and photographs, both obtained under the Public Records Act. It alleges 700 flights between September 2019 and September 2024, an average of 140 a year, and at least 5,600 photographs produced.^[1] It puts the fleet at six drones and five pilots: one DJI Matrice 300 RTK costing about $26,000, carrying a thermal camera the complaint says zooms to 200x, and five DJI Mavic 3E at about $5,000 each zooming to 56x.^[1]

On altitude, it cites photo metadata recording at least 699 photographs taken below 100 feet, 368 below 75 feet, 70 below 50 feet, and four below 25 feet.^[1] The comparison it draws is with People v. Cook (1985) 41 Cal.3d 373, where the aircraft was a plane at 1,600 feet using a 4x zoom lens.^[1]

The drift the numbers describe

The most consequential allegation is not any single flight. It is that the program was sold as one thing and became another.

The complaint states that in May 2019 the county’s Fish and Wildlife Commission approved a grant to buy drones “to utilize for convenient identification of non-permitted cannabis cultivation sites”, and that flights began that September against the civil cannabis code.^[1] Its table of flight reasons by year puts non-cannabis flights at 17.4 per cent in 2019, 4.0 per cent in 2022, and 46.1 per cent by 2024, as building, zoning, grading and junkyard cases took over from cannabis.^[1]

The geography moved too. The grant application said flights would concentrate on “remote cultivation sites”. The complaint’s analysis of the flight log puts 414 of the 700 flights within a mile of an incorporated city, 148 within a quarter mile, and 282 within a mile of Santa Rosa, with 74.7 per cent of all flights over residential or multifamily zoned property.^[1] It says 89 properties were flown more than once, 25 three or more times, and six four times.^[1]

A rural cannabis enforcement tool, on these figures, became a way to look at houses near town.

What the complaint says about the rules

The complaint alleges that “no County law explicitly regulates or authorizes Permit Sonoma’s warrantless drone surveillance program”, and that the operative rules are a departmental policy the section wrote in 2019, revised in 2022 and reaffirmed in 2023.^[1]

On what the 2022 revision changed, it alleges the policy dropped a 2019 requirement that inspectors “shall focus primarily on expanses of land (e.g., open fields)”, dropped a limit allowing drones only “when other means and resources are not available or are less effective”, and added authority for “discretionary proactive investigations” that need no prior complaint about the property. It alleges the policy requires no warrant, sets no bar on recording people, and that the section has no written training materials on complying with it and does not regularly audit compliance.^[1]

It also alleges that a clause restricting recording where people have a reasonable expectation of privacy was proposed internally, discussed, and not adopted when the director approved the policy on 18 November 2022.^[1]

The county denies these allegations.^[2]

What the county says

The county’s answer, filed on 22 October 2025 by the County Counsel, is a general denial. It denies “each and every, all and singular, generally and specifically, allegations contained in the unverified Complaint”, and denies that the plaintiffs have a viable cause of action or were injured in any sum.^[2]

It then raises eighteen affirmative defences. The ones that go to the substance rather than to procedure are worth stating plainly. The eighth pleads that “the actions challenged in the Complaint were a valid exercise of the legal authority properly vested in the Defendants”. The ninth pleads that they “were necessary to achieve and further a compelling and legitimate state interest”. The fifteenth pleads that the defendants “acted under the Good Faith Belief that the drone use described in the Complaint was not in violation of constitutional mandates”.^[2]

Others are procedural: that the plaintiffs lack standing as taxpayers, that they failed to exhaust administrative remedies, that the claims are time-barred, and that the defendants are immune under the Government Code.^[2]

Read together, the answer does not tell a story in which no drones flew. It contests whether the flights were unlawful, and whether these plaintiffs may bring this case.

The comparison inside the same county

This site already carries a page on the Sonoma County Sheriff’s drone program. That policy bars using the aircraft “to conduct random surveillance activities”, bars targeting people by characteristics such as race or religion, and says data of identifiable individuals captured during a mission shall not be retained.^[4]

The complaint makes the same comparison, alleging that other county departments including the Sheriff’s Office have policies restricting warrantless drone surveillance, and that comparable language was put to code enforcement and left out.^[1] The county denies the allegation.^[2]

Two arms of one county government, flying similar aircraft over the same residents, under materially different rules. Whichever way the case goes, that is a governance question for the Board of Supervisors rather than a court.

What this page does not do

It does not name the plaintiffs or describe their homes, their households or their private activities, all of which the complaint sets out at length. It does not reproduce any of the photographs the drones took, several of which appear in the complaint showing private yards, windows and pools. Publishing those would be doing the thing this site exists to document.

It also does not treat the complaint’s figures as established fact. They are one party’s reading of records that party obtained, in a case the other party is contesting in full. We have not obtained the drone policy, the flight log or the photographs ourselves, and those sit at the top of the open questions.

Where to ask

The Board of Supervisors is the body that established Permit Sonoma and delegated its powers, and on the complaint’s account it has never taken up the drone program. A board that has not voted on something can be asked to. Its meetings are public and take comment.

Two records would move this page from one side’s allegations to documented fact, and both are ordinary Public Records Act requests: the current drone policy, and the flight log. The complaint says the agency produced both to someone already, which makes them hard to refuse.

If you own property in the unincorporated county, the practical exposure is what a camera can see from above a fence line, and the answer at these altitudes and zoom levels is most of a back garden. The remedy is not a taller fence. It is a rule about when the county may fly, which is what the case and the Board are both, in different ways, about.