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667-677 47Th Ave

Outer Richmond, SF 94121 1593022 6 units · 3 fl · 1949

This building has significantly more problems than most nearby buildings. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Outer Richmond
Above average
avg 0.7
1
FewerMore

This building has 1 novs (7y), above the Outer Richmond average of 0.7.

Rent & eviction protection

Is 667-677 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 1949
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
RM2
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
Floors3
Year built1949
Total area5,876 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1593022
Ownership

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

Owner name
Kong Siuling
Mailing address
3415 Glendora Dr San Mateo CA 94403
Last sale
050521

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

675 47th Ave, San Francisco, CA 94121
669 47th Ave, San Francisco, CA 94121
671 47th Ave, San Francisco, CA 94121
677 47th Ave, San Francisco, CA 94121
667 47th Ave, San Francisco, CA 94121
673 47th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The three-story, six-unit multi-family residential building at 667-677 47th Avenue in San Francisco's Outer Richmond neighborhood, owned by Kong Siuling, has undergone several significant improvements since its construction in 1949. Most recently, in 2020, structural maintenance was performed with the installation of new concrete tie beams in the basement to address a foundation crack issue documented in 2020-2021. The building has seen substantial window and door improvements, with three separate projects in 2012 replacing a total of 49 windows and patio doors, and in 2016, a kitchen remodel was completed in one unit that included plumbing and electrical updates. Major infrastructure upgrades include a new electrical service installation with a 200-amp main service and five meters in 2003, and multiple roofing projects completed between 2010-2011.

The building's maintenance history includes addressing several important safety concerns. In 2002, the property faced multiple fire safety violations related to self-closing doors, fire escape maintenance, and sprinkler requirements, which were resolved by June 2002. More recent issues included water-related problems, with complaints about mold in 2011-2012, though these appear to have been resolved. The building underwent significant safety upgrades in response to various violations and complaints, including a comprehensive kitchen remodel in 2016 and structural reinforcement work in 2020-2021. The property's permit history shows regular maintenance and upgrading of essential systems, with no active building violations or complaints on record as of the latest data.

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

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Risk rating

How 667-677 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
12th percentile

Out of 1040 buildings in this neighborhood, 915 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
57%
No DBI
violation
43%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

12-Month severity forecast
No violation 48.6%
Moderate concern 27.1%
Severe concern 24.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
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The story over time

667-677 47Th Ave event timeline

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

2020
Building Permit Dec 18
Add new concrete tie beams in the basement level. to comply with nov 202011500.
$15,000 · Complete
Building Violation (NOV)Jan 14
Unsafe building (building in question is at the rear of lot). a response to a complaint has revealed that a dilapidated foundation wall as well as a dilapidated retaining wall which is a continuation of the foundation wall exists at the south property line creating a potentially dangerous situation. a vertical crack as well as tilting is evident on the foundation wall. horizontal cracking visible on retaining wall. code/section: sfbc 102a monthly monitoring fee applies. code/section: sfbc 110a, table 1a-k

See all 3 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 667-677 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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