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1845-1849 Mason St

Russian Hill, SF 94133 0100003 3 units · 3 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 Russian Hill
At or below average
avg 1.9
0
FewerMore

This building has 0 novs (7y), at or below the Russian Hill average of 1.9.

Rent & eviction protection

Is 1845-1849 Mason 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
3 units
Property type
Multi-Family Residential
Zoning
RM1
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 built1908
Total area3,990 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot0100003
Ownership

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

Owner name
Dea Wilbert & May Jung
Mailing address
1845 Mason 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.

1849 Mason St, San Francisco, CA 94133
1847 Mason St, San Francisco, CA 94133
1845 Mason St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The three-unit residential building at 1845-1849 Mason Street in Russian Hill is a three-story flats and duplex structure built in 1908, currently owned by Dea Wilbert & May Jung. The building's maintenance history shows consistent attention to the roof, with the most recent re-roofing project permitted in 2015 at a cost of $10,500, following an earlier re-roofing permit from 1992 that is now expired. The property has undergone regular housing inspections by Housing Inspection Services in 1999, 2003, and 2006, all of which were resolved without any noted ongoing concerns.

Of particular note is a recent and recurring issue with driveway access, though these incidents do not directly impact the building's internal conditions. Between March and December 2024, there were nine documented cases of vehicles blocking the driveway, with some resulting in citations being issued (specifically in March and July 2024). While most of these incidents were resolved either through citations or officers being unable to locate the offending vehicles, they represent an ongoing external access challenge for the property. The building's documented history shows regular maintenance compliance and no recorded housing code violations or safety concerns through the most recent data available to October 2023.

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

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Risk rating

How 1845-1849 Mason 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
65th percentile

Out of 1133 buildings in this neighborhood, 397 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
81%
No DBI
violation
19%
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.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Estimated permit spend (past 7 years)

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

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month severity forecast
No violation 56.5%
Moderate concern 18.9%
Severe concern 24.6%
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

1845-1849 Mason St event timeline

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

2026
311 Request Mar 04
Blocking driveway cite only
Parking Enforcement

See all 5 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1845-1849 Mason 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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