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20 Winfield St

Bernal Heights, SF 94110 5611008 3 units · 2 fl · 1974

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 Bernal Heights
At or below average
avg 1.2
0
FewerMore

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

Rent & eviction protection

Is 20 Winfield 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 1974
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units3
Floors2
Year built1974
Total area2,875 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot5611008
Ownership

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

Owner name
Janis Medina 1991 Revoc Int
Mailing address
4629 18th St San Francisco CA 94114
Last sale
061499

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-unit residential building at 20 Winfield Street in Bernal Heights, owned by Janis Medina, was constructed in 1974 and is classified as a two-story flats and duplex structure. The property has undergone several permitted modifications since 1998, including window and siding work, stairway improvements, and significant structural changes such as a horizontal addition and the removal of an illegal unit with the addition of a spiral staircase to the third level; however, all these permits are now expired. The building has experienced recurring sewer-related issues, with documented sewage back-ups in 2021 and most recently in November 2024, suggesting potential ongoing plumbing infrastructure challenges.

The property has been subject to various municipal service requests and complaints in recent years, with several open or recently resolved cases. Current concerns include an open case from October 2023 regarding construction equipment blocking the sidewalk, while past issues have included driveway blocking (July 2023), tree maintenance needs (overgrown tree in 2022 and property damage concerns in 2021), and a 2021 environmental health service request that was transferred to DPH. Historical permits from 1999 indicate previous maintenance work including reroofing and rear elevation improvements, though these permits are no longer active. The building's documented service history shows a variety of property management and maintenance issues, with particular attention needed on the plumbing system and exterior maintenance, while several resolved cases suggest responsiveness to tenant concerns.

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

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Risk rating

How 20 Winfield 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
38th percentile

Out of 1276 buildings in this neighborhood, 791 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
67%
No DBI
violation
33%
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.

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.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

12-Month severity forecast
No violation 55.0%
Moderate concern 23.8%
Severe concern 21.3%
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

20 Winfield St event timeline

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

2026
311 Request May 25
Parking on sidewalk
Parking Enforcement

See all 2 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 20 Winfield 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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