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441 Green St

Telegraph Hill, SF 94133 0132042 2 units · 2 fl · 1906

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 Telegraph Hill
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Telegraph Hill average of 1.2.

Rent & eviction protection

Is 441 Green 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
2 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
Units2
Floors2
Year built1906
Total area2,340 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot0132042
Ownership

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

Owner name
Der Yen & May J Revoc Tr Su
Mailing address
Der Yen Trustee 441 Green St #2 San Francisco CA 94133
Last sale
040715

Landlord portfolio

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

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Augrented Insights
Initial analysis

441 Green Street is a two-unit, two-story multi-family residential building located in the Telegraph Hill neighborhood, constructed in 1906 and currently owned by the Der Yen & May J Revocable Trust. The property has undergone several significant improvements in recent years, most notably a comprehensive roofing project initiated in December 2024 with an estimated cost of $16,800, involving the installation of advanced roofing membranes and replacement of flashing and vents. Earlier maintenance work includes the completion of rear yard stairs rebuilding in 2019 at a cost of $8,000. The building's electrical system is currently undergoing updates, with an issued permit in January 2025 for the removal of three Federal Pacific Electric (FPE) panels and their replacement, following an insurance request. A planning record indicates a previous project to replace deck and stairs in-kind, while the property experienced a notable tenant buyout in September 2020, when two tenants received a $75,000 buyout, representing the building's only recorded tenant displacement event in recent history. The property's maintenance history suggests active management, with significant investments in both structural and safety improvements.

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

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Risk rating

How 441 Green 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
75th percentile

Out of 684 buildings in this neighborhood, 171 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
89%
No DBI
violation
11%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Estimated permit spend (past 7 years)

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

12-Month severity forecast
No violation 84.6%
Moderate concern 10.6%
Severe concern 4.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

441 Green St apartment reviews

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On the map

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The story over time

441 Green St event timeline

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

2025
Plumbing Permit Jul 18
Work category: 1m; replacing one existing furnace with new furnace
Complete
Plumbing PermitMay 20
Work category: 1m; repalcing (2) existing furnaces with new furnaces

See all 11 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 441 Green 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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