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503-509 London St

Excelsior, SF 94112 6273025C 4 units · 2 fl · 1925

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 Excelsior
At or below average
avg 1.4
0
FewerMore

This building has 0 novs (7y), at or below the Excelsior average of 1.4.

Rent & eviction protection

Is 503-509 London 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 1925
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units4
Floors2
Year built1925
Total area3,300 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6273025C
Ownership

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

Owner name
Lucchesi Family Tr-Exempt T
Mailing address
Marcella Lucchesi, Trustee 204 Madrid St San Francisco CA 94112
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.

505 London St, San Francisco, CA 94112
509 London St, San Francisco, CA 94112
507 London St, San Francisco, CA 94112
503 London St, San Francisco, CA 94112
Augrented Insights
Initial analysis

The property at 503-509 London Street in the Excelsior neighborhood is a 2-story, 4-unit multi-family residential building constructed in 1925, currently owned by Lucchesi Family Tr-exempt T. The building's maintenance record shows several significant repairs and inspections over the years, with the most recent major work being dry rot repairs to the back stairs and guard rails in 2015, costing $6,000. Prior to this, a sewer line house trap replacement was completed in 2009. The building underwent routine housing inspections in 1999, 2001, 2004, 2006, and 2011, which typically addressed various safety and maintenance issues, including security recommendations such as installing proper deadlatch locks and addressing combustible storage concerns in the garages.

Recent activity around the property (December 2024 - January 2025) shows a pattern of street cleaning issues, with multiple reports of garbage and debris, including instances of human waste, furniture, and abandoned appliances, though all were successfully resolved by city services. Notably, there was one documented cooking fire incident reported at the property, which was contained to a container and resulted in no civilian injuries. While the building has experienced various routine violations in the past, particularly regarding gas shutoff tools and security requirements, these issues were addressed and resolved promptly, with all violations marked as not active. The most recent building-related activities have primarily focused on exterior area maintenance rather than building-specific issues.

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

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Risk rating

How 503-509 London 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
36th percentile

Out of 337 buildings in this neighborhood, 216 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
66%
No DBI
violation
34%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

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 54.0%
Moderate concern 14.2%
Severe concern 31.7%
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

503-509 London St event timeline

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

2026
311 Request Mar 07
Other excessive noise
Noise

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 503-509 London St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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