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527-531 Pierce St

Alamo Square, SF 94117 0824001B 3 units · 2 fl · 1923

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 527-531 Pierce 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 1923
2 or more units
3 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
Units3
Floors2
Year built1923
Total area4,339 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0824001B
Ownership

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

Owner name
Olive Annearl
Mailing address
15 Gilroy St San Francisco CA 94124
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.

531 Pierce St, San Francisco, CA 94117
527 Pierce St, San Francisco, CA 94117
Augrented Insights
Initial analysis

The three-unit multi-family residential building at 527-531 Pierce Street in Alamo Square, owned by Olive Annearl, has experienced several notable maintenance and infrastructure issues in recent years. Most concerning is the building's sewer system, which has faced multiple problems in 2024, including two sewage back-up incidents in July and ongoing issues with the side sewer vent, as evidenced by multiple complaints about damaged and missing vent covers between February and May 2024. The building also has a documented history of heating system issues, with a complaint filed in April 2015 regarding inadequate heat, though this appears to have been promptly addressed within four days.

The property, constructed in 1923 as a two-story flats and duplex structure, underwent reroofing in 2008 at a cost of $10,900, a significant maintenance investment for a building of its age. More recent external concerns include two instances of graffiti in April 2023, which were recorded during an enforcement pause period related to the COVID pandemic, and a hazardous materials situation involving glass reported in March 2023 that remains unresolved. The building has also experienced some parking-related incidents, with documented cases of driveway blocking in both December 2023 and November 2024, though the most recent case was closed with no enforcement action taken.

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

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Risk rating

How 527-531 Pierce 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
61th percentile

Out of 305 buildings in this neighborhood, 119 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
72%
No DBI
violation
28%
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.

Construction spend, owner's portfolio

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

Estimated permit spend (past 7 years)

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

Building age

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

12-Month severity forecast
No violation 54.4%
Moderate concern 23.3%
Severe concern 22.3%
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

527-531 Pierce St event timeline

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

2024
311 Request Oct 21
Blocking driveway cite only
Parking Enforcement
311 RequestJul 31
Blocking driveway cite only

See all 4 events

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

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Every record we have

Full data for 527-531 Pierce 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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