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1631-1635 Lyon St

Lower Pacific Heights, SF 94115 1046002 3 units · 3 fl · 1900

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 1631-1635 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 1900
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
Floors3
Year built1900
Total area5,410 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1046002
Ownership

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

Owner name
Conde Fmly Tr
Mailing address
Conde Don Albert & Marie Tr 64 Fairfield Way San Francisco CA 94127
Last sale
022196

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.

1635 Lyon St, San Francisco, CA 94115
1631 Lyon St, San Francisco, CA 94115
1633 Lyon St, San Francisco, CA 94115
Augrented Insights
Initial analysis

The three-unit residential building at 1631-1635 Lyon Street in Lower Pacific Heights, owned by Conde Family Trust, is a three-story flats and duplex structure built in 1900. The most significant recent improvement was a comprehensive kitchen remodeling project completed in late 2022, which included updates to plumbing and electrical systems, with an investment of approximately $20,000 to bring the kitchen up to modern standards. The building's maintenance history shows attention to infrastructure, including a historical reroofing project from 1993, though this permit has since expired.

In January 2005, the building underwent a routine housing inspection that revealed several fire safety violations, including the need for fire extinguishers, gas meter instruction postings, and gas shutoff tool provisions. These issues, along with concerns about emergency exits and smoke detectors, were all promptly addressed and abated by February 2005. The building has had some infrastructure-related issues in the surrounding area, including reports of flooding in June 2022 that affected on-street infrastructure and a damaged side sewer vent cover in 2014. More recent maintenance activities include addressing an overgrown tree issue reported in October 2022. While the property has experienced various maintenance and infrastructure issues over the years, most recent improvements suggest ongoing maintenance and upgrading efforts by the current ownership.

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

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Risk rating

How 1631-1635 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
74th percentile

Out of 670 buildings in this neighborhood, 174 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
84%
No DBI
violation
16%
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.

Building age

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

Building size

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

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month severity forecast
No violation 75.6%
Moderate concern 17.3%
Severe concern 7.1%
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

1631-1635 Lyon St event timeline

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

2026
311 Request Jan 15
Blocking driveway cite tow
Parking Enforcement

See all 5 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1631-1635 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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