Formal Application For 668 Guerrero Street in Mission District, San Francisco

668 Guerrero Street establishing view, rendering by RG Architecture668 Guerrero Street establishing view, rendering by RG Architecture

Formal permits have been filed for the six-story residential infill project at 668 Guerrero Street in San Francisco’s Mission District. The project seeks to expand an existing two-story commercial building to create 12 dwelling units just a block away from Mission Dolores. Mill Valley-based Real Equity Group One is the property owner.

The 68-foot-tall structure is expected to contain around 20,500 square feet, including 12,480 square feet of housing and 3,000 square feet for the ground-floor garage. The complex is expected to have 12 dwelling units with the addition of an accessory dwelling unit. Apartment sizes vary with three one-bedrooms, seven two-bedrooms, and three three-bedrooms. Parking will be included for ten cars and 12 bicycles.

668 Guerrero Street, rendering by RG Architecture

668 Guerrero Street, rendering by RG Architecture

668 Guerrero Street cross-section, illustration by RG Architecture

668 Guerrero Street cross-section, illustration by RG Architecture

The applicant invokes Senate Bill 423 and the State Density Bonus law to achieve a 100% bonus above base zoning. Of the 11 units, two will be designated as affordable housing. SB423 allows the streamlined ministerial approval for qualifying projects.

RG Architecture is responsible for the design. Renderings have remained the same since pre-illustrations. Illustrations were submitted. The contemporary design is wrapped with shiplap siding, cast-in-place concrete, and standing-seam metal roofing. Small balconies with wood soffits punctuate the flat exterior.

668 Guerrero Street facade view, elevation by RG Architecture

668 Guerrero Street facade view, elevation by RG Architecture

668 Guerrero Street, image via Google Street View

668 Guerrero Street, image via Google Street View

The tiny 0.09-acre property is located along Guerrero Street between 18th and 19th Street. Future residents will be a block away from Mission Dolores Park and a block away from the retail-rich Valencia Street.

Construction is expected to start in the second quarter of this year, with work estimated to cost around $8.2 million.

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15 Comments on "Formal Application For 668 Guerrero Street in Mission District, San Francisco"

  1. This is a tremendous upgrade over what was there before, and a huge improvement to neighborhood character.

  2. Nice little “missing middle” project. I’d love to see more things of this size tucked into underutilized lots.

  3. Looks good!

  4. Theodore Bagwell | January 24, 2026 at 10:42 pm | Reply

    Ugly and monstrous. The previous approved building was 40-50ft tall and fit in with the other buildings on the block.

    • Who cares? No one’s view is getting blocked and this is what makes financial sense. The only issue I have with this project is the parking spaces. They should be deeded separately and the owner/lessee should be allowed to convert to storage space if needed

      • Theodore Bagwell | January 26, 2026 at 4:39 pm | Reply

        I bet many neighbors on Guerrero, Linda, and Oakwood St do. All of their views will be blocked and this seven story building will block the sun for many of the existing three story buildings. Make it three tall stories or 4-5 regular stories and get rid of the parking for ten cars.

  5. Build more, and great to see housing come to an underutilized lot, but that building looks hideous. Hopefully it’s just the rendering, but yikes.

  6. San Francisco at about double the population would be so much more awesome. We need these types of projects for about 100 years straight. SF has been more or less flat in population since 1950. Not good.

    • Very nice I look forward to viewing it.

      • SF has not been flat in population growth since 1950, my friend. In 1975 the sign from the airport that welcomed one to SF along 101 displayed 685,000. Today it’s roughly 200,000 more. Double the population you would love? Wait until your Waymo, Tesla and Zoox queue gets so long at intersections that it’s a 10 minute wait to get through. (or maybe prohibit pedestrian crossings–who needs pedestrians anyway!)

        • When 2/3 of the city is not served by transit with a proper ROW, yeah, traffic is gonna suck.

          – Van Ness needs a line that’s not buses stuck at stoplights.
          – The ENTIRE western flank needs MUNI access, not dependent on tracks shared by vehicles or trains stuck at lights that are unsynchronized.
          – Both 19th Ave and Sunset Blvd should have a line.
          – Richmond? lol
          – Cow Palace? Nothing…
          – How about some E-W access from Dogpatch → Mission → Sunset?
          – Get the Wharf connected to a system with vehicles from this century.

          Expensive? Yeah. Get the city filled properly, and no more subsidizing personal vehicle ownership, you’ll see those Waymos fly.

  7. Ew more car-centric design? In 2026… really? Leave that for the suburbs, please.

  8. Good God, could they make it any uglier?

  9. I am a close neighbor on Guerrero and I LOVE THIS PROJECT. We need more density, more people on the sidewalks, more customers for the corner store, more Muni passengers, more neighbors to garden the Guerrero St median. Not to mention it is a tremendous improvement over the existing warehouse that has been blighted for decades.

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