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49-51 Sanchez St

Duboce Triangle, SF 94114 3537041 4 units · 2 fl · 1900

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 Duboce Triangle
At or below average
avg 2.3
0
FewerMore

This building has 0 novs (7y), at or below the Duboce Triangle average of 2.3.

Rent & eviction protection

Is 49-51 Sanchez 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 1900
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH3
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
Units4
Floors2
Year built1900
Total area2,080 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3537041
Ownership

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

Owner name
Jacoby Ben F & Devorah E
Mailing address
29 Via San Fernando Tiburon CA 94920
Last sale
000000

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.

49 Sanchez St, San Francisco, CA 94114
51 Sanchez St, San Francisco, CA 94114
51 A Sanchez St, San Francisco, CA 94114
Augrented Insights
Initial analysis

The two-story, four-unit multi-family residential building at 49-51 Sanchez Street in Duboce Triangle, owned by Ben and Devorah Jacoby, has undergone several significant maintenance and improvement projects since its construction in 1900. Most recently, in October 2024, dry rot repairs were completed on exterior stairs at a cost of $8,000. In 2015, a major renovation costing $60,000 was undertaken to replace concrete siding, windows, entry stairs, and flatwork/driveway improvements. The building has maintained good compliance records, with a cluster of violations in 2000 relating to security and gas utility requirements all abated by October 2000. A 2018 complaint regarding overgrown vegetation in the backyard raised concerns about fire hazards and emergency access, though this was marked as not active.

Recent urban maintenance issues around the property have included multiple reports of illegal parking and sidewalk obstruction between 2021-2023, though enforcement officers were often unable to locate the reported vehicles. Two instances of graffiti were reported and resolved in 2021-2023, along with a tree root-related sidewalk damage complaint that remains open as of November 2022. The most recent building permit activity (2024) indicates ongoing attention to structural maintenance, particularly in addressing issues like dry rot that can affect building integrity and resident safety. The property's maintenance history shows regular upkeep over the years, with particular attention to both exterior maintenance and compliance with building codes.

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

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Risk rating

How 49-51 Sanchez 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
30th percentile

Out of 287 buildings in this neighborhood, 201 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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Building age

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

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 51.1%
Moderate concern 21.3%
Severe concern 27.6%
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

49-51 Sanchez St event timeline

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

2024
Building Permit Oct 15
Dry rot repair exterior stairs less than 50%
$8,000 · Complete

See all 1 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 49-51 Sanchez St apartments

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

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