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508 Grove St

Hayes Valley, SF 94102 0794005 2 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 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 508 Grove 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
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 built1900
Total area1,624 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0794005
Ownership

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

Owner name
Oconnor Michael
Mailing address
508 Grove St San Francisco CA 94102
Last sale
011298

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 508 Grove Street, owned by Michael O'Connor, has a history spanning over two decades with several notable events. Most concerning is a cluster of building complaints from April-May 2018, when multiple reports were filed regarding construction activities in the rear of the property, including issues with stairway safety, unauthorized work, and potentially dangerous construction practices. This period also saw complaints about debris affecting neighboring units. In 2001, the building experienced significant maintenance issues with heating and hot water systems, resulting in two separate violations related to inadequate heating and hot water temperatures, though these were abated within approximately one month of being reported. The building's permitted history shows only one record from 1995 for reroofing work, which is now expired. More recently, from 2022 to 2024, there have been multiple 311 calls related to street cleaning issues near the property, including reports of waste, illegal postings, and abandoned items, though these are external to the building itself. Fire incident records show two responses to the address, though neither resulted in civilian injuries, with causes listed as a water problem and a false alarm. While many of these issues have been resolved, the concentrated period of construction-related complaints in 2018 and the 2001 heating/hot water system problems represent the most significant historical concerns regarding resident comfort and safety.

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

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Risk rating

How 508 Grove 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
79th percentile

Out of 1027 buildings in this neighborhood, 216 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
83%
No DBI
violation
17%
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 (ZIP code)

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

Building age

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

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month severity forecast
No violation 83.6%
Moderate concern 10.0%
Severe concern 6.4%
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

508 Grove St event timeline

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

2026
311 Request May 30
Garbage and debris
other loose garbage debris yard waste
311 RequestMay 28
Garbage and debris

See all 5 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 508 Grove 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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