150-152 Onondaga Ave, San Francisco, CA 94112

The multi-family residential building at 150-152 Onondaga Avenue in Mission Terrace is a 2-story, 2-unit structure built in 1915 owned by Noel & Cristina Masangcay. The property has had several significant issues over the years, most notably in 2003-2005 when multiple complaints were filed regarding illegal units, including a converted garage space into living quarters and laundry facilities, which were ultimately removed at a cost of $6,500. These violations were part of a larger pattern of unauthorized modifications, though more recent records show no active violations or complaints regarding illegal units.

The building underwent various improvements with building permits in 2007, including a kitchen remodel, furnace and water heater updates, and electrical work totaling $14,000, along with gas houseline extensions in 2013 and solar panel installation in 2016 (4.48 kW system). The property has experienced multiple maintenance issues, including reports of plumbing work without permits (active complaints from 1999), twice-reported open walls with plumbing and electrical remodeling (1999), and past housing concerns such as lack of heat and water intrusion (1997). Recent activity at the property has primarily consisted of routine street maintenance issues and parking concerns rather than building-specific problems.

Between October 2024 and December 2024, there were several 311 calls regarding garbage and debris, illegal parking, and one sewage back-up discharge from a side sewer vent. A Rent Board request related to fee and housing inventory was filed in early November 2024. Planning records indicate historical concerns about unauthorized units and garbage accumulation, though these issues were marked as closed and abated. The building's most recent significant improvement was the installation of a 4.48 kW solar panel system in 2016, suggesting some commitment to energy efficiency upgrades.