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817-819 Hayes St

Alamo Square, SF 94117 0821038 2 units · 2 fl · 1890

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 Alamo Square
At or below average
avg 2.3
0
FewerMore

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

Rent & eviction protection

Is 817-819 Hayes 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 1890
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RM1
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 built1890
Total area1,296 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0821038
Ownership

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

Owner name
Chl Mortage Pass-Through Tr
Mailing address
Nationstar Mortgage Llc Dba 8950 Cypress Waters Blvd Coppell TX 75019
Last sale
090820

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.

819 Hayes St, San Francisco, CA 94117
817 Hayes St, San Francisco, CA 94117
Augrented Insights
AI summary

The property at 817-819 Hayes Street is a two-unit, two-story multi-family residential building located in the Alamo Square neighborhood, constructed in 1890. The building has undergone several significant renovations and faced multiple compliance issues over the past decade. Most recently, in 2023, the building underwent kitchen and bathroom remodeling to address a complaint about unauthorized work, with permits showing both plumbing and electrical work completed in September 2023. The property experienced notable safety concerns between 2014-2022, with violations related to an illegal wooden utility ladder, deck and stair repairs, and drainage issues that required multiple Notices of Violation (NOV) and resulted in red tags. These violations were eventually addressed through various permit work, including a 2021 stair replacement project and 2021 sewer lateral replacement.

Historical records indicate ongoing maintenance challenges, including a 2000 incident involving sewer line issues that caused wastewater backup problems in the lower flat. The building has experienced several plumbing-related complaints and repairs over the years, including a 2015 rainwater drainage system modification. More recent building work has focused on proper code compliance, as demonstrated by the 2023 kitchen and bathroom remodeling project ($60,000) completed to resolve a 2023 complaint about unpermitted work. The property has also faced some environmental challenges, with multiple 311 calls regarding garbage and debris on the street in late 2024, though these are not directly related to building conditions. Fire incident records show several false alarms and minor incidents, with no recorded civilian injuries or major events. While the building's major code compliance issues appear to have been resolved through documented permit work, its maintenance history demonstrates ongoing attention required to address various structural and plumbing systems.

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Risk rating

How 817-819 Hayes 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
93th percentile

Out of 305 buildings in this neighborhood, 21 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
88%
No DBI
violation
12%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Notices of Violation, owner's portfolio

DBI NOVs across all buildings this owner is registered on — a signal of systemic maintenance issues across the portfolio.

12-Month severity forecast
No violation 85.6%
Moderate concern 12.5%
Severe concern 1.9%
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

817-819 Hayes St event timeline

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

2026
311 Request Apr 24
Not offensive
building residential

See all 15 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 817-819 Hayes St apartments

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

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