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637-639 Linden St

Hayes Valley, SF 94102 0820006 2 units · 2 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 Hayes Valley
At or below average
avg 2.3
0
FewerMore

This building has 0 novs (7y), at or below the Hayes Valley average of 2.3.

Rent & eviction protection

Is 637-639 Linden 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
2 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
Units2
Floors2
Year built1900
Total area1,296 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0820006
Ownership

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

Owner name
Fairfax Eric
Mailing address
63 Elsie St San Francisco CA 94110
Last sale
021304

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.

639 Linden St, San Francisco, CA 94102
637 Linden St, San Francisco, CA 94102
Augrented Insights
Initial analysis

The two-unit residential building at 637-639 Linden Street in Hayes Valley, owned by Eric Fairfax, has experienced various maintenance and emergency events since its construction in 1900. The most significant building improvements occurred in 2001, including a completed horizontal addition and the replacement of a rear deck and exit ladder for the second apartment, both with substantial costs of $14,000 and $5,500 respectively. Earlier records show a 1994 reroofing project, while a proposed front entry stairs replacement to the second floor was cancelled in 2001. The building's recent history (2024) has been marked by multiple street-related issues, particularly concerning garbage and debris, with several reports of overflowing city garbage cans and abandoned furniture. There have also been recurring parking enforcement calls, with multiple instances of vehicles blocking driveways or parking on sidewalks, though officers were often unable to locate the problem vehicles.

From a safety perspective, the fire incident records show no significant events affecting residents, with all recorded incidents being false alarms or system malfunctions, including false calls, unintended sprinkler activation, and alarm system activations, with no civilian injuries reported in any case. The combination of these two-unit residential features, historical improvements, and recent maintenance concerns paints a picture of an older building that has received some substantial upgrades over the years, though it currently faces challenges related to street-level maintenance and parking issues in the immediate vicinity.

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

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Risk rating

How 637-639 Linden 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
85th percentile

Out of 1027 buildings in this neighborhood, 154 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
85%
No DBI
violation
15%
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 (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

Building age

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

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 83.5%
Moderate concern 10.0%
Severe concern 6.5%
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

637-639 Linden St event timeline

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

2026
311 Request May 11
Garbage and debris
furniture
311 RequestApr 19
Garbage and debris

See all 5 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 637-639 Linden 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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