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1723-1725 Lyon St

Lower Pacific Heights, SF 94115 1031008 4 units · 2 fl · 1902

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 Lower Pacific Heights
At or below average
avg 1.6
0
FewerMore

This building has 0 novs (7y), at or below the Lower Pacific Heights average of 1.6.

Rent & eviction protection

Is 1723-1725 Lyon 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 1902
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 built1902
Total area3,916 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1031008
Ownership

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

Owner name
Norton Revoc Tr
Mailing address
Nancy S Norton, Ttee 1723-1725 Lyon St San Francisco CA 94115
Last sale
021501

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.

1723 Lyon St, San Francisco, CA 94115
1725 Lyon St, San Francisco, CA 94115
Augrented Insights
Initial analysis

The three-story, two-unit multi-family residential building at 1723-1725 Lyon Street in Lower Pacific Heights, built in 1902, has undergone several significant improvements over the past decade to enhance safety and maintenance. Most notably, in 2017, a voluntary seismic upgrade was completed at a cost of $54,000 to address soft-story concerns, following earlier permitted attempts in 2017. The building received a new roof in 2017 ($25,000) and has seen various modernization efforts including a gas fireplace installation (2002) and bathroom/kitchen remodeling (2002). The property's maintenance record shows attention to essential infrastructure, with the most recent work including a sewer lateral replacement in August 2023.

The building's history includes several routine safety inspections by Housing Inspection Services in 2004 and 2017, with no active violations noted. However, there have been multiple sewer-related issues, particularly in 2021 when several 311 calls were made regarding sewer odors and backups from the side sewer vent. The most recent plumbing work suggests ongoing efforts to address these historical challenges. The property has maintained its basic residential functionality, with recent complaints primarily related to exterior and street-level issues such as illegal postings and sidewalk parking, which are more reflective of neighborhood conditions than building-specific problems.

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

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Risk rating

How 1723-1725 Lyon 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
45th percentile

Out of 670 buildings in this neighborhood, 368 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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

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 58.3%
Moderate concern 24.1%
Severe concern 17.6%
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

1723-1725 Lyon St event timeline

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

2025
Building Permit Nov 24
Replace (3) pieces of siding on left side of building.
$100 · Complete

See all 2 events

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

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Every record we have

Full data for 1723-1725 Lyon 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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