Funny enough, it seems the vacant Victorian on Grove is making some progress, saw some scaffolding up around it this evening.

http://www.sfweekly.com/news/news-news/entropy-on-grove-stre... (2017) elaborates on why its been vacant, seems like the owner doesn't have the funds/desire to make it habitable. Also mentions how much red tape exists to develop in the neighborhood in the last couple paragraphs, maybe the owner doesn't feel like enduring that adventure.