Free SF apartment background check

855 47Th Ave

Outer Richmond, SF 94121 1690008 6 units · 2 fl · 1928

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Outer Richmond
At or below average
avg 0.7
0
FewerMore

This building has 0 novs (7y), at or below the Outer Richmond average of 0.7.

Rent & eviction protection

Is 855 47Th Ave 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 1928
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units6
Floors2
Year built1928
Total area3,880 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1690008
Ownership

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

Owner name
Mak Fmly Tr
Mailing address
Mak Janet Ttee 452 3Rd Ave San Francisco CA 94118
Last sale
060801

Landlord portfolio

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

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Augrented Insights
Initial analysis

855 47th Avenue is a two-story, 6-unit multi-family residential building located in San Francisco's Outer Richmond neighborhood, constructed in 1928 and currently owned by Mak Fmly Tr. The property has undergone several significant improvements in recent years, most notably completing its mandatory soft-story seismic retrofit in 2017-2021 (with a total cost of $62,000) and the installation of a new wall furnace in 2019. A kitchen and bathroom remodel project was completed in 2018, though there were some associated complaints about unpermitted work and construction noise during this period. The building is currently in the process of adding a 2-bedroom ADU at the back of the garage, with permits filed in 2021.

The property has a history of maintenance and safety compliance issues, particularly in the early 2000s and 2008, including concerns about the fire alarm system, heat outages, and various fire safety violations. A significant housing complaint was filed in 2016 regarding plumbing and electrical issues, though most historical violations appear to have been resolved. The building's systems have seen various improvements over time, including a staircase rebuild in 2001, vinyl siding application in 2000, and reroofing in 1991. Recent 311 calls from 2018-2024 have primarily concerned parking-related issues in the vicinity of the property, with multiple reports of abandoned vehicles that were generally resolved upon inspection.

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

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Risk rating

How 855 47Th Ave'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
9th percentile

Out of 1040 buildings in this neighborhood, 946 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
48%
No DBI
violation
52%
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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

Final warning rate, owner's portfolio

Per-building final warning rate across the owner's portfolio.

12-Month severity forecast
No violation 44.9%
Moderate concern 26.2%
Severe concern 28.9%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

855 47Th Ave apartment reviews

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The story over time

855 47Th Ave event timeline

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

2025
Building Permit Apr 15
Remove existing vinyl siding and replace with hardie plank on top of wood siding 30ft x 60ft. replace 6 windows and 3 doors in kind in same opening at side and rear of the property, repair dryrot on rear stairwell. less than 50%
$20,000 · Issued
DBI ComplaintApr 07
Date last observed: 05-apr-25; time last observed: 10am; identity of person performing the work: unknown; floor: ground; exact location: main bldg; building type: residence/dwelling work w/o permit; work being done in dangerous manner; ; additional information: stairwell and inside garage work. lead paint exterior work;

See all 6 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 855 47Th Ave 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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