Purchased for $6.5 million, or a breathless “$6,069 per square foot,” back in May of 2018, plans to raze the existing 1,071-square-foot home on an oversized, 6,926-square-foot Dolores Heights lot at 3669 21st Street, with “180 degree views from Twin Peaks to San Bruno Mountain,” have been drawn (while plans to surreptitiously “renovate” and “expand” the existing home have been abandoned).

And as proposed, a new 6,516-square-foot home, along with an integrated 854-square-foot “Accessory Dwelling Unit” (ADU) and a 1,200-square-foot garage, could rise on the site, designed by John Maniscalco Architectue for PBC Holdings (LLC).

Demolition and building permits for the home have been requested to expedite its development, assuming it’s approved and survives any challenges.

And while the existing home on the lot, which was built circa 1885, was initially deemed an eligible historic resource by Planning Staff, having once been home to James W. Hackett, a noted haiku poet who worked from (the) home in the 1960s, said determination was subsequently revised (“due to additional research provided by the Project Sponsor” challenging Hackett’s significance).

We’ll keep you posted and plugged-in.

Comments from Plugged-In Readers

  1. Posted by ST

    $6.5m purchase, $4m rebuild, sold for $7.5m in 2025…

    • Posted by Michael

      Budget for this build would probably be $8-$10M.

      • Posted by y

        So they’re hiring. What’s the carpenter going to be paid per hour?

  2. Posted by john p downey

    If you have money, you can challenge all determinations, even though you really shouldn’t have to. But the rich in SF can throw money, so why not. “Once home to noted haiku poet”, this is pretty crazy even for the the SF planning dept.

    • Posted by y

      See, working from home is nothing new.

      Something borrowed, something blue.

  3. Posted by David

    Rain comes to an end
    and the half-finished house
    shouts and swears again
    — J.W. Hackett

    • Posted by The Milkshake of Despair

      Holy smokes, that is seriously the output of a “noted haiku poet”? It isn’t even real haiku, just a sentence cut into 3 lines.

      • Posted by Dbert

        Well, you can’t buy a sense of humor.

        • Posted by Pablito

          The fog comes on little cat feet,
          Spends 6 million dollars, buys 21st Street.

          • Posted by dwf

            Where is the LIKE button for @ Pablito!

  4. Posted by aerl

    I get the appeal of floor-to-ceiling windows if you’re on a secluded lot in a low-density area, but when you’re crammed in with neighbors facing a city street, who would want that?

  5. Posted by Panhandle Pro

    Great! More tax money
    Let them build their tech mansions
    Win win all around

    Six blocks to bars
    Home is straight uphill, tipsy
    Calf workout or Uber?

    DoLoHeights new hub
    What Pac Heights was, rich and cool
    Faster to GOOG too

  6. Posted by Metroliner

    Why are SFR dwellings allowed to “maximize the lot” and build right to the very edges? This just creates literally forever unaffordable housing. Unless you’re building multifamily housing, the city should not allow these urban McMansions to proliferate.

    • Posted by Panhandle Pro

      What does maximizing the lot have to do with unaffordable housing? If you’re suggesting all SFH zoning be banned, I’m potentially here for it. If it’s going to remain SFH zoning, I don’t see the problem in maximizing the house size and thus the property tax bill.

    • Posted by Ohlone Californio

      But that’s false, as it’s not allowed to build right to the very edges of lots. Do you not see the setbacks in the rendering?

      • Posted by SocketSite

        The proposed home would abut the uphill property line, with an effective 4-foot setback from the downhill line, a front setback of 15 feet and a rear setback of 62 feet, or 45 percent of the lot depth, as required by code.

  7. Posted by Jim

    This is a city of mostly attached houses…built to the sidewalk, lot line to lot line, with a back yard. This block in fact is unusual in that some of the houses have setbacks from the street and/or next door neighbors, and some don’t. All of a sudden you want to change San Franciscan’s urban pattern and require front and side side setbacks because you think it will make the housing less unaffordable? That doesn’t even begin to make sense.

    • Posted by Notcom

      I think the point ‘the train’ struggled to make – and lost – was that it makes little sense to allow a huge house on a huge lot; if only a smaller house was allowed, then either the owner would:

      (1) build a smaller house with setbacks, or
      (2) subdivide the lot…and thus more houses would be built.

      Yeah, three degrees of separation from cogent, but it’s lurking in there somewhere.

  8. Posted by Miraloma Man

    Eccch, what a monstrosity. Mansicalco really is the architect to the overweening tech bro. But I thought they all moved to Tahoe, so why build this?

    P.S., this cottage looks way older than 1885. But obviously, money talks.

    • Posted by Ohlone Californio

      Two crummy takes. First, there’s so much going on with contemporary design, in context, it that it will fit right in on that block. And “way older than 1885” ? in San Francisco? not so much.

      • Posted by Ohlone Californio

        But I appreciated the “thought they all went to Tahoe” snark !

      • Posted by Miraloma Man

        Thanks for your response. I am actually a modernist, but Maniscalco’s work is just surface modernism and it has absolutely nothing to do with the Bay. If you look at the work of the Bay Region Tradition architects like Wurster, Campbell & Wong, Esherick, etc. it was all about simplicity, the local environment, and modesty. In contrast, Maniscalco is all ballsout, mechanical thrusting in search of maximum square footage. Egotistical and flashy. I think modernist mcmansion for tech bros who have no taste really is his bag.

        As far as locals go, I think the best modernist architects are Jensen Architects, Aidlin-Darling, and Natoma.

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