California Court Blocks Hermosa Beach STR Ban in the Coastal Zone. And It Could Protect Hosts All the Way Up the Coast.

Todd Koerner had been renting out a one-bedroom unit on Hermosa Avenue since 2012. Then the city fined him $2,500 for advertising it. He sued. And a Los Angeles Superior Court judge just told Hermosa Beach that its entire short-term rental ban in the Coastal Zone is unenforceable.

The ruling landed in March 2026, but the legal foundation goes back years. Judge James C. Chalfant found that Hermosa Beach violated the California Coastal Act of 1976 by banning STRs in the Coastal Zone without obtaining approval from the California Coastal Commission. The city cannot enforce its prohibition. It must refund Koerner’s fine. And every other STR operator in Hermosa Beach’s Coastal Zone is now shielded from the same enforcement the city has been running since 2016.

This is the third time a California court has blocked a coastal city’s STR ban on these exact grounds. The legal pattern is no longer a theory. It is a precedent.

What the Court Actually Ruled in Koerner v. Hermosa Beach

The case is Koerner v. City of Hermosa Beach, Case No. 25STCP00891, filed in Los Angeles Superior Court. Koerner, represented by attorney Frank Angel of Angel Law, argued that the city lacked authority to ban short-term rentals in the Coastal Zone without California Coastal Commission approval.

Judge Chalfant agreed. On July 2, 2025, he issued a preliminary injunction stopping the city from enforcing its STR ban against Koerner. The city’s attorney, Gregg Kettles, asked for a delay on enforcement of the injunction. The judge denied that request too.

By March 2026, the ruling had expanded beyond Koerner. Court documents show the city cannot fine any STR operator in the Coastal Zone. The reasoning is straightforward: the California Coastal Act requires cities to submit any regulation that changes the “intensity of use of and access to land” in the Coastal Zone to the Coastal Commission for review. Hermosa Beach never did this. It enacted a blanket ban in 2016 and started issuing fines of up to $20,000 per violation without ever seeking state approval.

The court ordered the city to refund Koerner’s $2,500 fine and prohibited further enforcement against Coastal Zone STR operators.

The Legal Pattern That Should Worry Every Anti-STR City Council in California

Hermosa Beach is not the first California coastal city to lose this fight. It is the third.

In 2019, a Ventura County judge overturned Santa Barbara’s STR ban in the Coastal Zone in Kracke v. City of Santa Barbara. The California Court of Appeal affirmed that decision in 2021, ruling that the Coastal Act required Commission approval before the city could impose its prohibition. Santa Barbara had allowed STRs for years and collected transient occupancy taxes from them. When it abruptly banned them, the court said the city “necessarily changed the intensity of use of and access to land and water in the coastal zone” without going through the required state review process.

Then came Manhattan Beach. Same attorney (Frank Angel), same judge (James Chalfant), same result. In Keen v. City of Manhattan Beach, the Superior Court struck down Manhattan Beach’s STR ban in the Coastal Zone. The Court of Appeal upheld the decision in April 2022. Manhattan Beach appealed to the California Supreme Court. The Supreme Court declined to hear the case.

Sources reveal a common thread in all three rulings. Each city enacted its STR ban without submitting it to the California Coastal Commission for review. Each city argued it had the local authority to regulate land use within its borders. Each court rejected that argument, holding that the Coastal Act supersedes local zoning power in the Coastal Zone.

Attorney Frank Angel, who represented the winning side in both the Manhattan Beach and Hermosa Beach cases, has said the Coastal Commission signaled as early as 2016 that comprehensive STR bans cannot meet the Coastal Act’s requirement of maximizing public access to the shoreline.

Why the Coastal Act Protects Short-Term Rentals (and What It Actually Says)

The California Coastal Act of 1976 is one of the strongest coastal protection laws in the country. It created the California Coastal Commission and gave it authority over land use decisions within the Coastal Zone, a strip of territory that extends roughly 1,000 yards inland from the mean high tide line along California’s entire 1,100-mile coast. In sensitive areas with estuaries or significant habitat, the zone extends up to five miles inland.

The Act requires every city and county in the Coastal Zone to develop a Local Coastal Program (LCP), which must be certified by the Commission as consistent with the Coastal Act’s policies. Once certified, the local government handles most permitting. But any amendment to the LCP, or any regulation that changes how land is used in the zone, must go back to the Commission for approval.

The core mandate of the Coastal Act is maximizing public access to the shoreline. The Commission has consistently interpreted short-term rentals as a form of that access. Vacation rentals provide affordable lodging that makes the coast accessible to people who cannot afford to buy coastal property or stay in hotels. When a city bans STRs, it reduces the supply of affordable coastal accommodations, which the Commission views as a restriction on public access.

This is the argument that has now prevailed in three separate court cases. Cities can regulate STRs in the Coastal Zone. They can cap permits, set minimum stays, require safety inspections, and impose occupancy limits. But they cannot impose blanket bans without the Commission’s approval. And data indicates the Commission is unlikely to approve a total prohibition, given its own stated position on public access.

How Many California Coastal Cities Could Face the Same Challenge

The Coastal Zone touches 15 counties and 61 cities across California. StaySTRA tracks 362 cities in California with active short-term rental markets. A significant portion of those markets sit partly or entirely within the Coastal Zone.

Several coastal cities currently enforce STR restrictions that were never submitted to the Coastal Commission for approval. The list includes some of California’s most desirable rental markets:

Seal Beach has an explicit ban on residential short-term rentals. Laguna Beach prohibits unhosted rentals except in a narrow set of grandfathered commercial zones. Santa Monica allows hosted rentals only, effectively banning entire-home vacation rentals. Fountain Valley has banned residential STRs outright.

Some cities have done it the right way. Del Mar and Encinitas both received Coastal Commission approval for their updated STR ordinances in February 2026. Those cities went through the LCP amendment process, submitted their regulations for public review, and obtained certification. Their rules are enforceable.

Pacifica is caught in the middle. The city passed a new STR ordinance in July 2025, and it is already in effect in the non-coastal portion of the city. But the coastal zone portion requires Commission approval, and the Commission postponed its scheduled February 2026 hearing. Pacifica is waiting. Until the Commission acts, the coastal zone portion of the city’s STR law cannot be enforced.

The question now is whether STR hosts or advocacy groups in other coastal cities will follow the Koerner playbook: file suit, argue the city never obtained Coastal Commission approval, and cite three consecutive court victories as precedent.

What Hermosa Beach Did After It Lost

Here is where the story takes a practical turn that every STR host in California should notice.

Instead of fighting the ruling or rushing to seek Coastal Commission approval, Hermosa Beach pivoted to revenue collection. The City Council amended its Transient Occupancy Tax ordinance, deleting the word “permitted” before “short-term rental.” That single word change means the city can now collect its 14% TOT from every STR operating in the Coastal Zone, whether or not the operator holds a city permit.

Over 200 STRs are currently advertised in Hermosa Beach’s Coastal Zone. The zone covers roughly half of the city’s 1.4 square miles, extending about 1,000 yards inland from the beach to approximately the Valley/Ardmore Greenbelt. Fewer than two dozen of those operators held city permits before the ruling.

Councilmember Michael Keegan framed the shift bluntly: the city has over $100 million in unfunded Capital Improvement Projects. Collecting TOT from previously unpermitted STRs creates a new revenue stream. The city went from trying to eliminate short-term rentals to taxing them in a matter of weeks.

For hosts operating in the Coastal Zone, the practical outcome is clear. You can operate. You will pay the 14% TOT. The city is not currently issuing fines for Coastal Zone STR activity. But this does not mean the regulatory landscape is settled. Hermosa Beach could still seek a Coastal Commission-approved LCP amendment that restricts (though likely not bans) STRs in the future.

What This Means If You Host in California’s Coastal Zone

If you operate a short-term rental in California’s Coastal Zone, the Koerner ruling and its predecessors give you a legal shield that did not exist five years ago. Here is how to think about it.

Check whether your property is in the Coastal Zone. The California Coastal Commission publishes interactive maps showing the exact boundaries. In urban areas, the zone may extend only a few hundred yards from the waterline. In rural or ecologically sensitive areas, it can stretch up to five miles inland.

Check whether your city’s STR ban went through the Coastal Commission. If your city bans or heavily restricts STRs and never submitted those rules to the CCC for LCP certification or amendment, the ban may be unenforceable in the Coastal Zone. The Koerner, Keen, and Kracke rulings all turned on this point.

Pay your TOT. The Hermosa Beach precedent shows that even when cities lose the enforcement battle, they pivot to tax collection. Collecting and remitting your local transient occupancy tax protects you legally and removes one of the strongest arguments cities use against unpermitted operators.

Do not assume permanent protection. The Coastal Commission can approve STR restrictions that fall short of blanket bans. Del Mar and Encinitas already received approval for permit caps and operating rules. Cities that go through the proper process can regulate you. The ruling protects you from cities that skip the process, not from regulation itself.

Watch the legislative calendar. California SB 346, which takes effect later in 2026, gives cities new tools to request booking data directly from platforms like Airbnb and Vrbo. That is a separate issue from Coastal Commission jurisdiction, but it signals that California is not backing away from STR oversight. The tools are shifting, not disappearing.

The Bigger Picture for California STR Regulation

California has no statewide framework for short-term rental regulation. Hundreds of cities and counties write and enforce their own ordinances, permits, tax rules, and operating standards. The result is a patchwork that varies block by block in some coastal counties.

The Koerner ruling does not change that patchwork. What it does is add a layer of state-level protection in the Coastal Zone that limits what cities can do unilaterally. The Coastal Act is a powerful statute. It has survived decades of legal challenges. And courts have now ruled three times that it applies to STR bans.

For the roughly 61 cities and 15 counties that sit in the Coastal Zone, the message is specific: regulate if you want, but go through the Commission. Skip that step and your ban will not survive a legal challenge.

For STR hosts and investors evaluating California coastal markets, this is material information. A city with a Coastal Zone STR ban that never received CCC approval is a city where the ban has a legal vulnerability. That changes the risk calculus on properties from San Diego to Marin County.

Use the StaySTRA California Airbnb calculator to run the numbers on specific coastal markets before making investment decisions. Market data, not just legal precedent, should drive your analysis.

Want to see what STR markets in California are actually earning? Run the numbers on any California coastal market with StaySTRA’s free Airbnb calculator. Revenue projections, occupancy data, and ADR comparisons across 362 California cities.