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1649-1657 Washington St

Nob Hill, SF 94109 0620024 7 units · 3 fl · 1908

This building has a higher-than-average number of open problems nearby. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

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 1649-1657 Washington 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
7 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
Units7
Floors3
Year built1908
Total area9,780 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0620024
Ownership

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

Owner name
Mann Christopher W
Mailing address
1651 Washington St San Francisco CA 94109
Last sale
043020

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.

1657 Washington St, San Francisco, CA 94109
1649 Washington St, San Francisco, CA 94109
1655 Washington St, San Francisco, CA 94109
1653 Washington St, San Francisco, CA 94109
1655 A Washington St, San Francisco, CA 94109
1657 A Washington St, San Francisco, CA 94109
1651 Washington St, San Francisco, CA 94109
Augrented Insights
Initial analysis

This three-story, seven-unit multi-family residential building at 1645-1657 Washington Street in Nob Hill, owned by Christopher W. Mann, was constructed in 1908 and has undergone several significant renovations and improvements over the years. The property completed its mandatory soft-story retrofit in 2017 (with CFC issued), ensuring compliance with San Francisco's seismic safety requirements. Major renovations were performed in 2008-2009, including kitchen and bathroom remodels in all units, electrical system upgrades (including 400-amp service and lighting improvements), and the installation of new furnaces and tankless water heaters. These works, however, led to multiple building violations between 2008 and 2018 due to concerns about work being performed beyond the scope of issued permits, particularly regarding a three-story rear deck that was ultimately legalized through a corrective permit process.

Recent improvements include the voluntary installation of a wireless communicator in 2023, suggesting ongoing attention to building safety systems. The building has a history of maintenance and compliance issues, including several routine inspections between 2001-2008, and multiple 311 calls for various issues including graffiti (2023), sewage backup (2016), and general cleaning needs. While there were several building violations related to unpermitted work and expired permits between 2011-2018, these appear to have been resolved, with the most recent significant violation concerning the rear deck being addressed through the proper permitting process. The property is currently classified as a TIC building (4 units or less), which may reflect its current configuration despite originally being a 7-unit building.

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

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Risk rating

How 1649-1657 Washington 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
32th percentile

Out of 1125 buildings in this neighborhood, 765 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
41%
No DBI
violation
59%
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 size

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

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.

12-Month severity forecast
No violation 33.2%
Moderate concern 34.2%
Severe concern 32.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

1649-1657 Washington St event timeline

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

2023
Electrical Permit Apr 03
For 1649 washington street garage, voluntary installation of a wireless communicator
Complete
Building PermitMar 02
The intent of the submittal is to show the voluntary installation of a wireless communicator.

See all 2 events

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

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Every record we have

Full data for 1649-1657 Washington 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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