[blackjack48]

Interestingly, the city determined a few years ago that the house was not a historic resource: http://citypln-m-extnl.sfgov.org/link.ashx?Action=Download&O...

Although the owner clearly exceeded the scope of the remodel permit issued by demolishing the house entirely, it's possible that the permit had authorized the removal of everything short of the wall framing (commonplace for "remodel" permits on non-historic buildings in SF.)

[erikpukinskis]

Ah, that’s why my new neighbor tore down the house and rebuilt an entirely different structure with a handful of original studs scattered throughout the framing.