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499 Marina Blvd

Marina, SF 94123 0417B001 18 units · 3 fl · 1930

This building has significantly more problems than most nearby buildings. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Marina
At or below average
avg 1.1
0
FewerMore

This building has 0 novs (7y), at or below the Marina average of 1.1.

Rent & eviction protection

Is 499 Marina Blvd 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 1930
2 or more units
18 units
Property type
Multi-Family Residential
Zoning
RM3
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
Units18
Floors3
Year built1930
Total area16,668 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0417B001
Ownership

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

Owner name
Keighran Cornelius & Cather
Mailing address
1564 Columbus Ave Burlingame CA 94010
Last sale
000000

Landlord portfolio

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

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Augrented Insights
Initial analysis

499 Marina Boulevard is a three-story, 18-unit multi-family residential building constructed in 1930, currently owned by Keighran Cornelius & Cather. The building's recent activity shows significant investment in safety upgrades, including a $42,000 fire alarm system upgrade completed in 2024 to comply with current fire code requirements, following the issuance of fire violations in 2024 (sleeping area requirements) and 2021 (alarm system maintenance). The building has a history of fire alarm system issues, with multiple fire complaints regarding alarm systems between 2015 and 2024, though all were marked as "Condition Corrected" or "No Merit". Notable safety improvements include voluntary lateral strengthening work in 2001-2002, window replacements in 2013, and various mechanical upgrades including backflow preventer replacement in 2018 and new domestic boiler installation in 2012.

The building experienced multiple violations in 2001-2009 related to boiler permits and heating system requirements, though these were all eventually abated. Recent 311 calls (2024-2025) indicate ongoing issues with garbage management near the property, with multiple reports of overflowing city garbage cans. The property also underwent antenna installation in 2017 for NextNav E-911 service, and had tenant buyouts involving two tenants in October 2018. The building's documented fire incidents show no civilian injuries, with incidents primarily involving system activations or false alarms. The property has maintained a pattern of addressing regulatory requirements, though occasionally requiring follow-up inspections to achieve compliance, as evidenced by multiple permit renewals and final inspections over the years.

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

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Risk rating

How 499 Marina Blvd'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
11th percentile

Out of 988 buildings in this neighborhood, 879 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
39%
No DBI
violation
61%
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.

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 24.5%
Moderate concern 52.1%
Severe concern 23.4%
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

499 Marina Blvd event timeline

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

2025
311 Request Nov 24
Garbage and debris
human waste or urine
311 RequestOct 28
Garbage and debris

See all 12 events

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

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Every record we have

Full data for 499 Marina Blvd 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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