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233-235 Madrid St

Excelsior, SF 94112 6009040 2 units · 3 fl

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Excelsior
At or below average
avg 1.4
0
FewerMore

This building has 0 novs (7y), at or below the Excelsior average of 1.4.

Rent & eviction protection

Is 233-235 Madrid 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 unknown
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units2
Floors3
Year built
Total area2,524 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6009040
Ownership

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

Owner name
Ping Ping Chen 2012 Lvg Tr
Mailing address
Chen Ping Ping Trustee 3606 Wilshire Ave San Mateo CA 94403
Last sale
052516

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.

233 Madrid St, San Francisco, CA 94112
235 Madrid St, San Francisco, CA 94112
Augrented Insights
Initial analysis

The three-story multi-family residential building located at 233-235 Madrid Street in the Excelsior neighborhood, owned by Ping Ping Chen 2012 Living Trust, has undergone several significant modifications and improvements since its construction. The property, which contains two units, has seen substantial renovations between 2012-2018, including the legalization of a second unit in 2015 (2 bedrooms, 2 baths, 1 kitchen, 1 living room), conversion of storage into living spaces in 2014, and various compliance-related improvements to address violations from 2007. The building has received comprehensive updates to its systems, including electrical rewiring, plumbing upgrades (new sewer, gas, water pipes), and HVAC improvements with a new furnace installation in 2013. Multiple building permits were properly filed and completed for these improvements, with the most recent being an administrative permit from 2018 to correct previous documentation.

Historical records indicate some concerning patterns related to building safety and maintenance, particularly during 2020 when complaints were filed regarding dangerous work conditions and pest problems. Fire safety complaints have been recorded in 2007 (blocked exits), 2008 (alarm systems), and 2012 (blocked exits), though most were either found to have no merit or were corrected promptly. The building's recent history shows ongoing maintenance issues, with several 311 calls in 2024-2025 primarily related to parking violations and one noise complaint, as well as a property damage report filed in January 2025. While most major renovation work has been properly permitted and completed, there have been some instances of work being performed outside of permit scope, as noted in complaints from 2013. The property's documentation shows efforts to bring the building into compliance with local regulations, particularly regarding unit legalization and system upgrades, though some historical violations from 2007 related to unauthorized additions appear to remain as "Active" in the records.

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

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Risk rating

How 233-235 Madrid 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
9th percentile

Out of 337 buildings in this neighborhood, 307 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
46%
No DBI
violation
54%
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.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

12-Month severity forecast
No violation 40.9%
Moderate concern 39.3%
Severe concern 19.8%
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

233-235 Madrid St event timeline

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

2024
311 Request Aug 31
Other illegal parking
Parking Enforcement

See all 7 events

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

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Every record we have

Full data for 233-235 Madrid 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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