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1521-1523 Taylor St

Nob Hill, SF 94133 0157005 7 units · 3 fl · 1968

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 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 1521-1523 Taylor 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 1968
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 built1968
Total area7,020 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0157005
Ownership

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

Owner name
Ella Mark Chan Tr
Mailing address
Chan Ella M/derrick M/hoo D 1521 Taylor St San Francisco CA 94133
Last sale
080718

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.

1523 Taylor St, San Francisco, CA 94133
1521 Taylor St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The three-story multi-family residential building at 1521-1523 Taylor Street in Nob Hill, containing 7 units and constructed in 1968, has undergone several significant improvements and faced some regulatory challenges in recent years. Most notably, in late 2023 and early 2024, the building completed a major fire safety upgrade including a new fire alarm system and the installation of a smoke detector on the second floor, bringing the building into compliance with San Francisco Fire Code requirements at a cost of approximately $42,000. However, there has been a recent violation regarding the boiler permit (July 2024) that required a final warning letter to be issued in August 2024, with resolution expected by December 2024.

The building has seen regular maintenance and unit improvements over the years, including two significant unit renovations (Unit #3 in 2022 and Unit #5 in 2017), roofing work in 2015, and water damage repairs to Units 1 and 4 in 2014. Historical violations from 2000-2008, including issues with fire extinguishers, smoke doors, and garage egress access, were addressed at that time. Several unit-specific improvements have been completed, including plumbing and electrical upgrades during the recent renovations. The property has experienced various routine inspection and maintenance issues, with the most recent being a boiler permit violation, though these have generally been resolved in a timely manner.

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

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Risk rating

How 1521-1523 Taylor 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
44th percentile

Out of 1125 buildings in this neighborhood, 630 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
58%
No DBI
violation
42%
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 location

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

12-Month severity forecast
No violation 41.1%
Moderate concern 21.8%
Severe concern 37.1%
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

1521-1523 Taylor St event timeline

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

2026
311 Request Jan 01
Parking on sidewalk
Parking Enforcement

See all 15 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1521-1523 Taylor St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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