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647-649 Minna St

South of Market, SF 94103 3727074 4 units · 2 fl · 1916

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 South of Market
At or below average
avg 3.3
1
FewerMore

This building has 1 novs (7y), at or below the South of Market average of 3.3.

Rent & eviction protection

Is 647-649 Minna 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 1916
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RED
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 built1916
Total area2,750 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3727074
Ownership

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

Owner name
Ronald & Susanne O Dudum 19
Mailing address
Ronald Akram Dodum & Susann 1245 31St Ave San Francisco CA 94122
Last sale
031804

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.

649 Minna St, San Francisco, CA 94103
647 Minna St, San Francisco, CA 94103
Augrented Insights
Initial analysis

The 4-unit, 2-story multi-family residential building at 647-649 Minna Street in SoMa, owned by Ronald & Susanne O Dudum, has undergone several significant improvements since its construction in 1916. The property completed its mandatory Tier 3 soft-story seismic retrofit in 2014-2020, including a $25,000 ground floor strengthening project in 2011 and associated repairs. The building has addressed various safety and maintenance issues over the years, with notable improvements including fire sprinkler installation in 2005 (following 1996 complaints about plumbing and electrical issues), electrical rewiring of ground floor rooms in 2004, and multiple repairs to address housing code violations in 2018, such as door repairs, wall repairs, glazing reinforcement, and utility shutoff requirements.

Recent building management has shown attention to safety concerns, with two documented "Blocked Exits" fire complaints in 2021 and 2023 being promptly corrected. The property has maintained active compliance with housing inspections, though it experienced cluster of violations in 2018 that were all abated by April 2018. The most recent planning record indicates a variance was approved for legalizing a fifth unit, though the building is currently listed as 4 units. The area experienced typical urban challenges as evidenced by 311 calls in late 2024, including several parking enforcement requests and street cleaning matters, though these relate to the surrounding neighborhood rather than the building's internal conditions.

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

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Risk rating

How 647-649 Minna 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
43th percentile

Out of 430 buildings in this neighborhood, 245 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
62%
No DBI
violation
38%
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.

DBI tenant complaints (past 7 years)

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

Number of units

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

Neighborhood (ZIP code)

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

12-Month severity forecast
No violation 52.7%
Moderate concern 30.1%
Severe concern 17.3%
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

647-649 Minna St event timeline

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

2026
311 Request Apr 24
Parking on sidewalk
Parking Enforcement
311 RequestApr 24
Parking on sidewalk

See all 7 events

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

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Every record we have

Full data for 647-649 Minna 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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