What to know about Cal Poly fraternity, neighborhood conflict in SLO: A timeline

Tensions between San Luis Obispo residents, Cal Poly fraternities and city officials have escalated over the past two years, with multiple permit revocations, a grand jury investigation and a lawsuit.

Here’s how the conflict unfolded:

• SLO residents Kathie and Steve Walker, who lived in the Alta Vista neighborhood, described over a dozen fraternity houses operating illegally in low-density neighborhoods near Cal Poly, reporting harassment and noise that lasted until 3 or 4 a.m., as detailed in a January 2025 Tribune investigation that found only 6 of Cal Poly’s 18 fraternities held conditional use permits.
• In May 2025, the SLO Planning Commission unanimously voted to revoke conditional use permits for Delta Chi and Sigma Nu after Delta Chi received 10 noise citations and Sigma Nu received 9 citations since January 2022, with Commissioner David Houghton saying the city had been “playing whack-a-mole” with the problem.
• A SLO County grand jury report released June 23, 2025, found the city had largely failed to manage fraternity activity and noisy parties, identifying potentially more than 40 illegal fraternities operating in R-1 and R-2 zones and citing noise violations more than three times per week on average in the neighborhoods during the 2023-24 school year.
• In September 2025, the SLO City Council unanimously rejected all six findings of the grand jury report, with officials defending their enforcement efforts and saying livability near Cal Poly remained a priority despite disagreement with the jury’s conclusions.
• In March of this year, the Planning Commission revoked conditional use permits for two more fraternities — Lambda Chi Alpha, with 10 citations since October 2024 and roughly $7,750 in unpaid fees, and Alpha Epsilon Pi, with three citations between April and October 2025.
• Walker sued Cal Poly President Jeffrey Armstrong and the CSU Board of Trustees on March 18, alleging the university unlawfully redacted addresses of registered fraternity events after previously publishing them in October 2023.
• In May, the SLO City Council unanimously denied Alpha Epsilon Pi’s appeal to restore its revoked permit, leaving only two Cal Poly fraternities left with conditional use permits in SLO.
• At a special meeting on code enforcement on May 26, Cal Poly fraternities proposed a campus neighborhood overlay zone to ease regulations, but SLO Councilmember Jan Marx called the proposal “dead in the water” as staff reported a jump from eight fraternity-related investigation requests between 2017 and 2023 to 168 since 2023.

The summary points above were compiled with the help of AI tools and edited by journalists. The source reporting referenced above was written and edited entirely by journalists.

Sadie Dittenber

The Tribune

805-781-7814

Sadie Dittenber writes about education for The Tribune and is a California Local News Fellow through the UC Berkeley School of Journalism. Dittenber graduated from The College of Idaho with a degree in international political economy.

Kaytlyn Leslie

The Tribune

805-781-7928 (voicemails only)

Kaytlyn Leslie writes about business and development for The San Luis Obispo Tribune. Hailing from Nipomo, she also covers city governments and happenings in San Luis Obispo. She joined The Tribune in 2013 after graduating from Cal Poly with her journalism degree.