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1644 Washington St

Nob Hill, SF 94109 0597010 14 units · 3 fl · 1909

This building has significantly more problems than most nearby buildings. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Nob Hill
Above average
avg 2.4
5
FewerMore

This building has 5 novs (7y), above the Nob Hill average of 2.4.

Rent & eviction protection

Is 1644 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 1909
2 or more units
14 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
Units14
Floors3
Year built1909
Total area11,421 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0597010
Ownership

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

Owner name
Kalakaua Llc
Mailing address
2240 Union St Ste 101 San Francisco CA 94123
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 14-unit, 3-story multi-family residential building at 1644 Washington St in Nob Hill, built in 1909 and currently owned by Kalakaua LLC, has experienced numerous maintenance and safety issues over the past decade. Most recently, the building underwent fire safety upgrades in 2023, including the installation of low-frequency sounders in sleeping areas and an updated fire alarm panel to comply with San Francisco Fire Department requirements, following a history of fire safety violations dating back to 2006-2007 when issues with blocked exits, emergency lighting, exit signs, and fire alarm maintenance were documented. The property has faced recurring challenges with its heating system, including a significant violation in 2018 regarding an unpermitted boiler, though this was resolved by November 2018.

The building's maintenance history shows several concerning patterns, including moisture-related issues with multiple complaints about leaks and water damage between 2017-2024, and concerns about lead paint hazards documented in 2001. More recent complaints include concerns about noise disturbances (2023) and a leaking pipe (2024). There have been multiple instances of insect infestations, including yellow jacket nests in 2018, and earlier documented mold issues in 2007. The property has generated numerous 311 calls for various maintenance and sanitation issues, particularly in the past year, with multiple reports of abandoned debris and cleaning needs. While many of these issues have been addressed through proper channels, their recurrence suggests ongoing maintenance challenges. The building has also undergone some positive improvements, as evidenced by recent fire system upgrades and historical attention to compliance with various safety regulations.

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

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Risk rating

How 1644 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
15th percentile

Out of 1125 buildings in this neighborhood, 956 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
22%
No DBI
violation
78%
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.

Building size

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

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 23.1%
Moderate concern 39.7%
Severe concern 37.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1644 Washington St apartment reviews

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The story over time

1644 Washington St event timeline

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

2025
Building Violation (NOV) Apr 10
Building violation
At time of inspection, active leak was observed on the building side egress pathway. locate and repair source of water damage in an approve…
Building Violation (NOV)Apr 10
Building violation

See all 10 events

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

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Every record we have

Full data for 1644 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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