Free SF apartment background check

522 Paris St

Excelsior, SF 94112 6273001B 2 units · 2 fl · 1923

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 Excelsior
Above average
avg 1.4
5
FewerMore

This building has 5 novs (7y), above the Excelsior average of 1.4.

Rent & eviction protection

Is 522 Paris 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 1923
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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 built1923
Total area1,900 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot6273001B
Ownership

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

Owner name
Woo Yiu Man & Chan Chin Yu
Mailing address
522 Paris St San Francisco CA 94112
Last sale
092117

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.

522 A Paris St, San Francisco, CA 94112
522 Paris St, San Francisco, CA 94112
Augrented Insights
Initial analysis

The property at 522 Paris Street in the Excelsior neighborhood is a two-unit, two-story multi-family residential building constructed in 1923, currently owned by Woo Yiu Man & Chan Chin Yu. The building has experienced several significant issues in recent years, most notably multiple active code violations and complaints from 2022 related to heating systems and illegal unit status. In February-March 2022, the building received Notices of Violation (NOV) for requiring heat in each occupied habitable room capable of maintaining a minimum temperature of 70°F, along with requirements for non-tamperable temperature-sensing devices. A critical NOV filed in March 2022 declared the property as legally designated R-3, two-family dwelling on two floors, while identifying unauthorized modifications including an illegal dwelling unit with kitchen and bath behind the garage, unapproved wiring and plumbing, lack of required smoke detectors, inadequate emergency egress from sleeping rooms, and unauthorized change of use.

The building has undergone several permitted modifications over the years, including a significant $112,523 project in 2022 to convert existing room space into an ADU (Accessory Dwelling Unit) with bedroom, bathroom, and kitchen. Earlier modifications include ground floor improvements in 1996, and plumbing updates such as 4-inch water pipe replacement in 2017. Historical records show repairs for dry rot in 1986 affecting front and rear stairs, though this permit was ultimately cancelled. The building's maintenance history includes multiple 311 calls between 2020 and 2024, with issues ranging from sewage backup in December 2022 to several parking-related complaints. While recent permits indicate attempts to address code compliance issues, including a filed revision in December 2024 regarding occupancy and fire safety requirements, numerous active violations remain unresolved as of October 2023, which could impact resident comfort and safety.

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

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Risk rating

How 522 Paris 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
49th percentile

Out of 337 buildings in this neighborhood, 172 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
70%
No DBI
violation
30%
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.

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.

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 64.9%
Moderate concern 29.2%
Severe concern 5.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

522 Paris St event timeline

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

2026
311 Request Apr 10
Parking on sidewalk
Parking Enforcement
311 RequestMar 12
Parking on sidewalk

See all 19 events

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

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Every record we have

Full data for 522 Paris 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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