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633-635 Olmstead St

Portola, SF 94134 6150034 2 units · 2 fl · 1954

This building has more problems than most buildings in this neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Portola
Above average
avg 1.8
14
FewerMore

This building has 14 novs (7y), above the Portola average of 1.8.

Rent & eviction protection

Is 633-635 Olmstead 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 1954
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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
Units2
Floors2
Year built1954
Total area2,394 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6150034
Ownership

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

Owner name
Liu Sally L
Mailing address
635 Olmstead St San Francisco CA 94134
Last sale
032714

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.

635 Olmstead St, San Francisco, CA 94134
633 Olmstead St, San Francisco, CA 94134
Augrented Insights
Initial analysis

The property at 633-635 Olmstead Street is a two-unit, two-story multi-family residential building located in the Portola neighborhood, constructed in 1954 and currently owned by Sally L Liu. The building has experienced several significant issues recently, with multiple active complaints and violations filed in October-November 2024, including a cockroach infestation, mold and mildew problems, unapproved electrical and plumbing work, and various maintenance concerns such as damaged floor tiles, rear stairway repairs, and issues with window ledges. The building has undergone some recent improvements, with permits issued in late 2024 for electrical upgrades (sub-panel replacement and dedicated circuits) and plumbing work for a washing machine installation, though these were preceded by violations for unapproved work.

This property has a history of maintenance and safety concerns, including past violations for an illegal basement unit (resolved in 2008), dried rot repairs in 1983, and multiple fire-related incidents and complaints between 2009-2019, including blocked exits and combustible materials issues. The building's systems have received some attention over the years, with permits for various repairs and installations, including bathroom modifications in 2004 and dry rot repairs in 1983. Recent complaints filed by tenants in 2024 raise significant concerns about the building's current condition, including electrical system problems, improper kitchen ventilation, and persistent maintenance issues. The property has also had multiple tenant buyouts in the surrounding area, with records showing payments to tenants for relocation, suggesting ongoing changes to the building's occupancy.

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

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Risk rating

How 633-635 Olmstead 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
27th percentile

Out of 255 buildings in this neighborhood, 186 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
60%
No DBI
violation
40%
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.

Neighborhood location

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

Neighborhood location

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

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

12-Month severity forecast
No violation 69.9%
Moderate concern 23.8%
Severe concern 6.3%
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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The story over time

633-635 Olmstead St event timeline

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

2025
311 Request Aug 16
Other garbage can repair
Litter Receptacle Maintenance

See all 17 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 633-635 Olmstead St apartments

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

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