​On October 1, 2025, the City Council of the City of Oceanside accepted $100,000 in grant funding from Preserve Calavera, a client of Chatten-Brown Law Group. The City of Oceanside will expend this funding on the operation of the g’Oside Electric Vehicle shuttle program, allowing riders to easily travel around Downtown Oceanside in an energy-efficient manner.

The Sierra Club San Diego Chapter, represented by Chatten-Brown Law Group, along with its environmental nonprofit co-petitioners and the State Attorney General’s Office, executed a settlement agreement with the developers of Otay Ranch Village 13 to reduce the project’s wildfire risk, increase protections for open space and biological resources, and guarantee funding for greenhouse gas mitigation. This agreement allows for up to 2,750 housing units to help ease the housing burden in San Diego County.

Endangered Habitats League, represented by Chatten-Brown Law Group, challenged the approval by the City of Encinitas of a proposed condominium project near the Batiquitos Lagoon, for violations of the California Environmental Quality Act and California Coastal Act. Following months of discussion, a settlement has been reached that reduces impacts to rare habitat, limits development to one side of a canyon, and forms an acceptable Multiple Habitat Conservation Program (“MHCP”) preserve segment.

In a significant win for environmental justice, Tulare County has rescinded all permits and approvals for a controversial 28-acre hydrogen plant in Pixley, California. This decision comes as a result of a settlement reached in a lawsuit filed by Pixley Residents for Environmental Justice, represented by Chatten-Brown Law Group, and Leadership Counsel for Justice and Accountability

The Carlsbad City Council unanimously approved changes to the Carlsbad’s General Plan and zoning ordinance requiring more scrutinous review of expansions or additions to the runway at the McClellan-Palomar Airport. Chatten-Brown Law Group submitted numerous comments on behalf of Citizens for a Friendly Airport to aid in the administrative review for the revisions to the City’s ordinances.

​“This is truly the best possible outcome,” said Sierra Club’s counsel Josh Chatten-Brown. “And the pivotal factor was the successful litigation by the Sierra Club and its partners, compelling the sellers to become willing participants in the permanent preservation of Proctor Valley’s crucial habitat for endangered and threatened wildlife.”
​
Proctor Valley is vital to the survival of endangered species such as the California gnatcatcher, San Diego fairy shrimp, Otay tarplant, San Diego button celery, golden eagle, and Quino checkerspot butterfly, among others.

​Represented by Chatten-Brown Law Group, PQ-NE Action Group entered into a settlement agreement with Lennar Homes to settle litigation concerning the Junipers, a housing project in Rancho Peñasquitos.  Construction on the project was halted in February 2023 after the Superior Court ruled in favor PQ-NE Action Group, finding violations of CEQA in the project’s environmental review.