Free SF apartment background check

210 27Th Ave

Lake Street, SF 94121 1386039 7 units · 2 fl · 1924

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Lake Street
At or below average
avg 0.6
0
FewerMore

This building has 0 novs (7y), at or below the Lake Street average of 0.6.

Rent & eviction protection

Is 210 27Th Ave 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 1924
2 or more units
7 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
Units7
Floors2
Year built1924
Total area5,550 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1386039
Ownership

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

Owner name
Patrick J Mulligan & Lisa M
Mailing address
John And Karen Mulligan 2133 20Th Ave San Francisco CA 94116
Last sale
082994

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 7-unit, 2-story multi-family residential building at 210 27th Avenue, built in 1924 and owned by Patrick J Mulligan & Lisa M, has undergone several significant structural improvements and has a notable history of maintenance issues requiring attention to resident safety and building integrity. In 2007, substantial work was performed to shore up the front wall at the basement level, including the installation of steel moment frames and new foundations, along with electrical upgrades for garage door operators and lighting systems costing approximately $36,000. The building faced regulatory challenges in 2014 when it was cited for failure to submit the mandatory Soft Story Retrofit Program form, though this violation is currently listed as not active. Multiple building violations were recorded in 2006 related to fire safety, including concerns about fire escape access, obstructions, and the need for proper locking devices at exterior doors, though these issues appear to have been addressed.

Historical records reveal various maintenance work, including rear wooden stairs repairs in 2006 ($3,500), and unit renovations in the 1990s involving the replacement of lath and plaster with sheetrock in multiple units. The building has experienced several maintenance issues over the years, including a cracked front door glazing in 2006, an asbestos-related complaint in 2007, and intermittent hot water problems due to boiler issues in 1998. More recently, there have been multiple reports of illegal parking in the vicinity and some street cleaning issues recorded through 311 calls, though these are not directly related to the building's condition. The property's documented history shows a pattern of addressing structural and safety concerns, though the delayed response to the Soft Story Retrofit Program in 2014 was a notable exception, now appearing to be resolved.

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

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Risk rating

How 210 27Th Ave'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
8th percentile

Out of 660 buildings in this neighborhood, 607 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
49%
No DBI
violation
51%
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 size

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

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 53.1%
Moderate concern 31.6%
Severe concern 15.3%
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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On the map

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The story over time

210 27Th Ave event timeline

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

No dated public records on file yet.
Every record we have

Full data for 210 27Th Ave 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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