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870 Oak St

Hayes Valley, SF 94117 0826022 9 units · 3 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 Hayes Valley
At or below average
avg 2.3
0
FewerMore

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

Rent & eviction protection

Is 870 Oak 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
9 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
Units9
Floors3
Year built1900
Total area7,239 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0826022
Ownership

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

Owner name
Plaza Group Llc
Mailing address
308 Jessie St San Francisco CA 94103
Last sale
031099

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-story multi-family residential building at 870 Oak Street in Hayes Valley, owned by Plaza Group LLC, was constructed in 1900 and contains 9 units. The property has undergone several significant improvements over the past decade, with the most recent notable upgrades including a 400-amp electrical service upgrade in June 2018, comprehensive kitchen and bathroom remodels in units 9 (completed September 2017) and 5 (completed June 2015), and a fire alarm system replacement in 2013. The building has maintained regular safety inspections through the Housing Inspection Services division, with routine inspections recorded in 1997, 2005, 2009, 2012, and 2017, all of which were marked as not active, indicating no significant issues were found.

More recent infrastructure improvements include plumbing updates associated with the 2017 and 2015 unit renovations, with a house trap installation in 2008. The property has experienced some external maintenance needs as documented in 311 calls, including reports of street cleaning requirements, graffiti, and tree-related issues near the property. There have been multiple parking enforcement requests in recent years related to driveway blockages, with several citations issued between 2021 and 2022. While the building's maintenance record shows regular updates to key systems and compliance with safety inspections, the surrounding area has experienced typical urban challenges including occasional graffiti and waste management issues, as evidenced by the 311 calls and street cleaning needs.

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

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Risk rating

How 870 Oak 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
42th percentile

Out of 1027 buildings in this neighborhood, 596 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
62%
No DBI
violation
38%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Number of units

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

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 39.7%
Moderate concern 45.4%
Severe concern 15.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

870 Oak St apartment reviews

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The story over time

870 Oak St event timeline

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

2026
Electrical Permit Jan 05
Ref: witness test fee for e202512027465
Complete

See all 5 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 870 Oak 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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