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40-46 John St

Nob Hill, SF 94133 0180037 4 units · 2 fl · 1908

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 Nob Hill
At or below average
avg 2.4
0
FewerMore

This building has 0 novs (7y), at or below the Nob Hill average of 2.4.

Rent & eviction protection

Is 40-46 John 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 1908
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH3
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
Units4
Floors2
Year built1908
Total area3,290 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot0180037
Ownership

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

Owner name
Wong Robert K & Frances
Mailing address
42 John St San Francisco CA 94133
Last sale
000000

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.

44 John St, San Francisco, CA 94133
40 John St, San Francisco, CA 94133
42 John St, San Francisco, CA 94133
46 John St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The two-story, four-unit multi-family residential building at 40-46 John St in Nob Hill, owned by Robert K & Frances Wong, was constructed in 1908 and has undergone several routine safety inspections over the years. The most significant cluster of violations occurred in July 2007, when multiple safety issues were identified, including egress obstructions, missing door closers at smoke and fire doors, and inadequate water heater safety features. These violations were all resolved by September 2007. A 1999 routine safety inspection and another in 2015 (specifically for common areas) also took place, though no violations from these inspections are recorded in the available data. The building's maintenance record shows a reroofing project was initiated in 1992, though this permit is now expired.

The property has generated several 311 calls in recent years, primarily related to street and sidewalk issues rather than building-specific problems. These external incidents include parking enforcement in 2019, general street cleaning in 2018, and reports of abandoned vehicles in 2015 and 2016, all of which were resolved by city authorities or resulted in citations. A color curb complaint from 2013 was transferred to the Color Curb Program for survey and processing. The available records indicate no active violations or complaints as of the latest data, suggesting that all previously recorded issues have been addressed.

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

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Risk rating

How 40-46 John 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
66th percentile

Out of 1125 buildings in this neighborhood, 382 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
73%
No DBI
violation
27%
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 (ZIP code)

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

Building permits, owner's portfolio

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

12-Month severity forecast
No violation 40.3%
Moderate concern 13.8%
Severe concern 45.9%
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

40-46 John St event timeline

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

2025
Planning Record Apr 30
Approved – replace lower front window with wood clad window, same size, operation, and appearance. Interior renovation to convert ground floor storage space to habitable space for unit 40 John (2nd floor left), including 1 bedroom. Proposed office and playroom may not be used as sleeping rooms per plans, new space less than 800 square feet so does not require planning impact fees. If ground floor habitable space is further expanded, must come back to Planning for review and potential impact fee assessment.
Closed
Building PermitApr 09
Construct 1 bedroom, 2 bathroom, 2 media room, home office at g/f. replace (e) brick foundation w/ concrete footing.

See all 5 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 40-46 John St apartments

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

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