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640-648 Jackson St

Financial District North, SF 94133 0177007 12 units · 2 fl · 1908

This building has more problems than most buildings in this neighborhood. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Financial District North
Above average
avg 3.2
4
FewerMore

This building has 4 novs (7y), above the Financial District North average of 3.2.

Rent & eviction protection

Is 640-648 Jackson 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 1908
2 or more units
12 units
Property type
Multi-Family Residential
Zoning
CRNC
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
Units12
Floors2
Year built1908
Total area12,300 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0177007
Ownership

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

Owner name
Sew Ling Soo Hoo Wong Revoc
Mailing address
Brenda Wong, Succ Trustee 2 Cordelia St San Francisco CA 94133
Last sale
050721

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.

648 Jackson St, San Francisco, CA 94133
644 Jackson St, San Francisco, CA 94133
640 Jackson St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The 12-unit, 2-story apartment building at 640-648 Jackson Street, built in 1908, has undergone several significant improvements and faced various compliance issues in recent years. Most notably, in 2024, the property is undergoing brick repointing work costing $30,000 and has been actively working to comply with the awning amnesty program, with permits issued and completed totaling $3 in associated costs. In 2022, the building completed a voluntary fire alarm system upgrade to enhance safety features, including the installation of low-frequency sounders in sleeping areas to meet current fire code requirements.

The building has a documented history of addressing safety concerns, including multiple fire code violations that have been corrected, such as a 2024 fire escape issue and a 2019 alarm systems problem. A significant renovation was completed in 2020 in Apartment #3, involving comprehensive updates to the kitchen and bathroom facilities, including new plumbing fixtures, tiles, and fixtures, with costs totaling $28,000. The property has undergone several routine inspections over the years, with past violations primarily related to fire safety and security requirements, including issues with fire escape maintenance, egress obstructions, and security door locks - all of which have been subsequently resolved. Recent 311 calls primarily concern street cleaning and maintenance issues around the building's exterior, which have been addressed through standard city response procedures.

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

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Risk rating

How 640-648 Jackson 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
21th percentile

Out of 145 buildings in this neighborhood, 115 are predicted to be safer.

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

Building size

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

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 11.2%
Moderate concern 63.2%
Severe concern 25.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

640-648 Jackson St apartment reviews

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The story over time

640-648 Jackson St event timeline

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

2026
DBI Complaint Apr 22
Date last observed: 21-apr-26; time last observed: 10am; floor: basement; exact location: main bldg; building type: commercial/business plumbing leak; ; additional information: the food facility's water heater was observed leaking profusely from the valve onto the basement floor.;
Plumbing Inspection Division
Building PermitMar 30
Commercial restaurant: install new electrical outlets, saw cut concrete slab to install new floor sink, update plumbing.

See all 27 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 640-648 Jackson 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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