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1625-1631 Washington St

Nob Hill, SF 94109 0620027 4 units · 2 fl · 1906

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
1
FewerMore

This building has 1 novs (7y), at or below the Nob Hill average of 2.4.

Rent & eviction protection

Is 1625-1631 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 1906
2 or more units
4 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
Units4
Floors2
Year built1906
Total area4,500 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot0620027
Ownership

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

Owner name
Po Chuen Leong Credit Shelt
Mailing address
Leong Daniel 1631 Washington St San Francisco CA 94109
Last sale
081009

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.

1631 Washington St, San Francisco, CA 94109
1625 Washington St, San Francisco, CA 94109
1627 Washington St, San Francisco, CA 94109
1629 Washington St, San Francisco, CA 94109
Augrented Insights
Initial analysis

The 2-story multi-family residential building at 1625-1631 Washington Street in Nob Hill, owned by Po Chuen Leong Credit Shelt, was constructed in 1906 and contains four units. The property has undergone several significant renovations and faced multiple compliance issues in recent years. Most notably, there are three active complaints regarding unpermitted work and permit violations from 2023, including a recent complaint filed in August 2023 about construction without proper permits. Recent improvements include bathroom remodeling in September 2023 (currently in process), completion of kitchen remodeling in unit 1629 in August 2023, reroofing in February 2023, and window replacement in August 2022. The building has experienced multiple fire alarm activations (none resulting in injuries) and had one intentional building fire incident in 2001. A routine inspection in 2011 revealed several violations including seismic bracing for water heaters and fire safety concerns, though these were abated by May 2011. The property has had some maintenance issues noted through 311 calls, primarily related to sidewalk cleaning needs, and there was one instance of graffiti on the sidewalk in 2023.

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

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Risk rating

How 1625-1631 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
37th percentile

Out of 1125 buildings in this neighborhood, 709 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
49%
No DBI
violation
51%
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.

DBI tenant complaints (past 7 years)

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

Neighborhood location

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

12-Month severity forecast
No violation 42.9%
Moderate concern 30.2%
Severe concern 27.0%
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

1625-1631 Washington St event timeline

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

2025
311 Request Jun 19
Garbage and debris
other bagged boxed contained garbage

See all 15 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1625-1631 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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