Free SF apartment background check

51 Moss St

South of Market, SF 94103 3731063 3 units · 3 fl · 1906

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in South of Market
At or below average
avg 3.3
0
FewerMore

This building has 0 novs (7y), at or below the South of Market average of 3.3.

Rent & eviction protection

Is 51 Moss St rent-controlled?

San Francisco's Rent Ordinance caps rent increases and provides eviction protection for most residential units built before 1979 with 2+ units. Here's how this building scores.

Built before 1979
Built 1906
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RED
Likely rent-controlled. Building age and unit count suggest this property falls under San Francisco's Rent Ordinance.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units3
Floors3
Year built1906
Total area2,724 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3731063
Ownership

Registered owner per SF Assessor-Recorder (secured roll).

Owner name
Quintero Seana Lyn & Otilio
Mailing address
51 Moss St Unit A San Francisco CA 94103
Last sale
012819

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Augrented Insights
Initial analysis

The three-unit multi-family residential building at 51 Moss Street, owned by Seana Lyn & Otilio Quintero, underwent significant renovations in 2017, with comprehensive updates to all three units including bedroom relocations, kitchen and bathroom remodels, and the addition of new bathrooms and central heating systems. The 1906 structure received substantial electrical upgrades during this period, with new lighting, switches, and receptacles installed throughout. Earlier maintenance records from 2003-2004 indicate the building addressed several fire safety issues, including central alarm system certification, garbage receptacle sprinkler requirements, and egress concerns, with all violations formally abated by February 2004.

The building's history shows consistent maintenance and upgrading, with earlier work in the 1990s focusing on concrete repairs, termite remediation, and roofing. A 2011 complaint regarding unauthorized drywall installation on the second floor was promptly resolved within one day. The property has maintained active compliance with major safety systems, evidenced by the replacement of the fire controller in 2006, though there was a brief period in 2013 noted for an overcrowded assembly issue that was corrected the same day. Recently, there have been multiple 311 calls regarding exterior maintenance issues, primarily related to garbage and debris, with the most recent being in January 2025. Two illegal parking complaints from mid-2024 were resolved with citations, and there is an open noise complaint from July 2024 that remains unresolved.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 51 Moss St's risk score is calculated

We trained a model on 7 years of SF DBI inspection data — notice of violation filings, complaint history, and owner track records. It estimates the probability that DBI inspectors will issue a Notice of Violation at this address in the next 12 months. Lower % = safer.

What the score means for you

Grade A–B — Low risk

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Grade C — Moderate risk

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Grade D–F — High risk

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
86th percentile

Out of 430 buildings in this neighborhood, 60 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
84%
No DBI
violation
16%
DBI violation
likely
Model explanation

What's driving this score

The three data points that most influenced this building's risk rating — ranked by the weight the model placed on each one.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month severity forecast
No violation 67.4%
Moderate concern 23.5%
Severe concern 9.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

51 Moss St apartment reviews

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The story over time

51 Moss St event timeline

Violations, complaints, fire incidents, permits, and buyouts — most recent records in order.

2026
311 Request Jan 19
Homelessness and supportive housing
housing homeless request for service

See all 4 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 51 Moss St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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