As San Mateo’s former mayor and a current member of the City Council, it is my job to ensure our residents have a say in all major policy decisions.
Lisa Diaz Nash
That standard has simply not been met with Horizon’s proposed Detox Center – a site envisioned to house 69 residents — on 101 N. El Camino Real at El Cerrito. For this reason, I oppose the project’s siting at that location, and call on the San Mateo County Board of Supervisors to relocate the facility to a different, appropriate site.
The city of San Mateo and our residents were not invited and, in fact, the city’s repeated requests for information and engagement, ignored.
When the city was first informed of the project in October, and again in December in this newspaper, I called on Horizon immediately to engage with our community with facts and information on its proposed parameters. On March 16, I issued a written call to the county stating in no uncertain terms that I would not be supporting the siting of the center at the proposed San Mateo location.
At my initiation, the San Mateo City Council also formally requested that the county conduct a public meeting on the proposed siting. That meeting was not scheduled by the county until March 24. By then, the Horizon Detox Center grant application had already been granted $25.5 million in state funding — without a single opportunity for the city and our residents to provide meaningful public input on the proposal.
In short, decisions had already been made and questions were unanswered — and the county’s meeting was simply an example of “too little, too late.”
Now, we have a chance to fully address this misguided, “top down” proposal.
On Tuesday, April 7, at 11 a.m., the San Mateo County Board of Supervisors will be discussing where to locate Horizon’s Detox Center. I urge San Mateo residents and community members to join me in attending, to ask questions and have your perspectives heard. The meeting will be at 500 County Center, first floor, Redwood City, or via Zoom.
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This remains a county-sponsored project — and the city of San Mateo has not even been formally presented with the project details to review. This is unacceptable.
The best way to resolve difficult issues is to engage directly with the people concerned, share all available information, listen to, and understand why people are concerned, and work with them on solutions that resolve those concerns. It takes time, it is hard, and the final solutions usually are compromises from the original goals. But that compromise solution considers everyone’s needs, which makes it much more likely to solve problems and reach consensus.
The only viable solution now is to site the Horizon Detox Center at a different location that meets site selection criteria, including neighborhood public safety and community consensus.
There are official, and unofficial, efforts underway to do just that. I applaud the leadership of Supervisor Jackie Speier and have been working closely with her to support her efforts to locate
Horizon elsewhere. We all need to support those efforts at a local, county and state level so people who need these essential support services — which include innovative behavioral health rehabilitation services within high quality short- and long-term residential facilities — can get the help they need, with full community support for years to come.
As I’ve said many times before, San Mateo is a generous community. We all want compassionate, effective services for the most vulnerable families and residents.
However, the city of San Mateo and its residents deserve a detailed understanding early on of any proposed project’s parameters and the process for community input and views to be considered. I am disappointed that the county and Horizon did not meet their commitment to transparency and community collaboration on this particular proposal. Their failure to do so is a lost opportunity.
Lisa Diaz Nash is a member of the San Mateo City Council, representing District 1.
Horizon has an existing treatment center next to CORA (Community Overcoming Relationship Abuse), and AFAIK there have been no safety issues to date. Please let me know if I'm missing something. https://share.google/rE0ZBVZNnm5ajDG01
I spoke with Lisa Diaz Nash several years ago, before she was elected to the City Council. On the phone, she spent a lengthy time talking about issues, with a totally open mind. Once again, my now-friend Lisa is representing the best interests of our San Mateo community. I totally support her on this, as I almost always do. Noelia Corso has never communicated with us, and we are in her County Supervisor district, plus live walking distance from the proposed ECR location here in North Central San Mateo. I hope that Ray Mueller and at least one other Supervisor joins the experienced Jackie Speier in funding the purchase of the current location in Burlingame. I do not hear any objections from Burlingame representatives. Noelia, this is not good representation. You acted without asking impacted residents for their input.
Personally, I am tired of the opposition to any change in our community based on a "lack of outreach". Facts be damned, if the proposal doesn't make everyone happy and some people weren't paying attention, it must be stopped. This was the same argument against the bike lanes on Humboldt - doesn't matter if it saves lives, not enough outreach.
Of course, more outreach doesn't mean that opponents will get the decision that they want, but it is a politically palatable reason for blocking progress. It sounds better than "not in my neighborhood", "addicts are scary," or "parking over safety".
Lisa, it’s interesting that you state the lack of information as a reason for your opposition. It seems to me the County put together an informational event that was disrupted and overcome by your friends, and you are now using that as your reason for not supporting. By the way, that lack of support comes even in the void of evidence that you say you need in order to find support. It sounds like contempt prior to investigation.
Rick - When she learned about this, Lisa is quoted in a December 2025 article that she hopes they (Supervisor Corzo and Horizon) will engage community input. That did not happen. I live two blocks from this site and can assure you, that did not happen. I learned about this in February from a Nextdoor post from someone who lives one block from the site and had gotten a cheery postcard from Horizon about it. I immediately checked with my neighbors. NO ONE had heard about this so we took it upon ourselves to "learn more" by going to the February meeting at the Behavioral site on Alameda and were treated dismissively. We were limited to 40 seconds to speak, with no answers to our questions and no show of compassion for our concerns. I wasn't present, but Noelia held a Zoom meeting as well where I heard she just wanted to sell her point and even muted those who argued for answers. So LISTENING goes both ways. By the time we got to the March meeting we were beyond frustrated and wanted to be be listened to as well. I wasn't aware a bullhorn was being brought in, but applaud whomever did that. It was messy, but finally gave us a chance to be heard.
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(7) comments
Horizon has an existing treatment center next to CORA (Community Overcoming Relationship Abuse), and AFAIK there have been no safety issues to date. Please let me know if I'm missing something. https://share.google/rE0ZBVZNnm5ajDG01
https://www.horizonservices.org/palm-avenue/
Palm ave. is an industrial area where many residents feel is more appropriate. Thank you Lisa for your work on this very important issue.
I spoke with Lisa Diaz Nash several years ago, before she was elected to the City Council. On the phone, she spent a lengthy time talking about issues, with a totally open mind. Once again, my now-friend Lisa is representing the best interests of our San Mateo community. I totally support her on this, as I almost always do. Noelia Corso has never communicated with us, and we are in her County Supervisor district, plus live walking distance from the proposed ECR location here in North Central San Mateo. I hope that Ray Mueller and at least one other Supervisor joins the experienced Jackie Speier in funding the purchase of the current location in Burlingame. I do not hear any objections from Burlingame representatives. Noelia, this is not good representation. You acted without asking impacted residents for their input.
Personally, I am tired of the opposition to any change in our community based on a "lack of outreach". Facts be damned, if the proposal doesn't make everyone happy and some people weren't paying attention, it must be stopped. This was the same argument against the bike lanes on Humboldt - doesn't matter if it saves lives, not enough outreach.
Of course, more outreach doesn't mean that opponents will get the decision that they want, but it is a politically palatable reason for blocking progress. It sounds better than "not in my neighborhood", "addicts are scary," or "parking over safety".
This is the second time you have hit the nail one the head in as many days! Thank you
Lisa, it’s interesting that you state the lack of information as a reason for your opposition. It seems to me the County put together an informational event that was disrupted and overcome by your friends, and you are now using that as your reason for not supporting. By the way, that lack of support comes even in the void of evidence that you say you need in order to find support. It sounds like contempt prior to investigation.
Rick - When she learned about this, Lisa is quoted in a December 2025 article that she hopes they (Supervisor Corzo and Horizon) will engage community input. That did not happen. I live two blocks from this site and can assure you, that did not happen. I learned about this in February from a Nextdoor post from someone who lives one block from the site and had gotten a cheery postcard from Horizon about it. I immediately checked with my neighbors. NO ONE had heard about this so we took it upon ourselves to "learn more" by going to the February meeting at the Behavioral site on Alameda and were treated dismissively. We were limited to 40 seconds to speak, with no answers to our questions and no show of compassion for our concerns. I wasn't present, but Noelia held a Zoom meeting as well where I heard she just wanted to sell her point and even muted those who argued for answers. So LISTENING goes both ways. By the time we got to the March meeting we were beyond frustrated and wanted to be be listened to as well. I wasn't aware a bullhorn was being brought in, but applaud whomever did that. It was messy, but finally gave us a chance to be heard.
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Be truthful. Don't knowingly lie about anyone or anything.
Be proactive. Use the 'Report' link on each comment to let us know of abusive posts.
PLEASE TURN OFF YOUR CAPS LOCK.
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