Preliminary Plans For 606 South Delaware Street, San Mateo

606 South Delaware Street, illustration courtesy San Mateo Planning website606 South Delaware Street, illustration courtesy San Mateo Planning website

Preliminary plans have been filed for a residential infill at 606 South Delaware Street near downtown San Mateo, San Mateo County. The project would replace a single-family home with 20 studio apartments. The property owners are listed as Gustavo Hornos and Jesica Salomon, two San Rafael-based individuals and stage winners at the 2011 USA Tango Championship.

606 South Delaware Street, image via Google Street View

606 South Delaware Street, image via Google Street View

The complex will yield around 22,000 square feet, including 19,650 square feet for housing. Additional space will be provided for 21 bicycles. Of the 20 units, two will be deed-restricted for very low-income households, and two for moderate-income households. Residential amenities will include a ground-floor laundry room and a rooftop deck with a lawn, seating, and an outdoor kitchen.

The application invokes Senate Bill 79 and SB 330 to streamline the approval process and increase residential capacity well above base zoning.

606 South Delaware Street floor plan, illustration courtesy San Mateo Planning website

606 South Delaware Street floor plan, illustration courtesy San Mateo Planning website

The narrow 0.1-acre property is located along South Delaware Street between 5th Avenue and 7th Avenue. The property is a block away from the Kiku Crossing affordable housing complex. Future residents would be a five-minute walk from South B Street and 10 minutes on foot from the city’s Caltrain Station.

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8 Comments on "Preliminary Plans For 606 South Delaware Street, San Mateo"

  1. John Pivirotto | August 1, 2026 at 11:38 am | Reply

    May Karma come rest on Gustavo Hornos and Jesica Salomon at their San Rafael residence.

    • I’m assuming you mean good karma for creating more homes that people at multiple income levels can live in?

      • John Pivirotto | August 2, 2026 at 9:22 am | Reply

        That’s what the neighbor in the single story home next to him is thinking while they sit in the shade of the 60-foot building next to them. Maybe the folks in the apartments can glaze into their back yard and make comments as they try to enjoy their day.

        • *single family homes mere steps away from a multi-billion dollar transit system, waste uber amounts of potential in a politically relevant dying state.*

          Your pathetic generation has f’ed this state so bad, homes for the next generation is bankrupting cities. Take your protected tax statues and downsize to a proper-sized apartment. Your kids and grandkids can’t afford the privilege you’ve established, so why still live in the past?

  2. its outrageous that this is allowed. on claremont st the next street over along the rr tracks another development is fine. there is no parking provided which means not only does it ruin the immediately adjacent neighbors but the entire block

  3. It’s understandable to not want to live near this if you are dependent on street parking and now have a tall new building shading your home

    For those who own being prepared to move so redevelopment can happen might be the best path. I’m in the 1/2 radius of Caltrain station and change is likely to be slower for me but I’m trying to see the opportunity. Don’t be the last hold out.

  4. Do they actually live in San Rafael? I googled them and they’ve owned the house since 2018 and they also work in San Mateo

  5. Yeahhhh, this definitely appears to be an AI generated project. I mean, kudos to the applicant for training their AI well enough to get a passable application put together, but these designs don’t actually work, though it looks pretty enough to start.
    This project will also never pencil – fret not, NIMBY neighbors – this isn’t actually ever going to get financed/built. It is allowed by SB79 but the economics/engineering don’t support it.
    Save your money for more tango contest entries, Gustavo! (or try for a SB684 small lot subdivision if this actually is an owner occupied lot)

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