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655 Natoma St

South of Market, SF 94103 3727030 4 units · 2 fl · 1907

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
0
FewerMore

This building has 0 novs (7y), at or below the South of Market average of 3.3.

Rent & eviction protection

Is 655 Natoma 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 1907
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 built1907
Total area2,880 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3727030
Ownership

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

Owner name
Bruce P Helmberger/Barbara
Mailing address
Bruce P Helmberger & Barbar 1252 Valencia St Ste A San Francisco CA 94110
Last sale
010306

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Augrented Insights
AI summary

The two-story, four-unit apartment building at 655 Natoma Street, built in 1907, has undergone significant renovations and improvements in recent years, particularly during 2014 when substantial work was completed across all four units. This comprehensive renovation included kitchen and bathroom remodels, electrical upgrades, new windows, and sidings, with an approximate total investment of $230,000 across multiple permits. The work addressed various maintenance issues, including dry rot repairs and the installation of new safety features such as smoke detectors and arc fault breakers. The property has a documented history of proper maintenance and upgrades, including a fire damage repair in 1991 and various renovations in the 1980s and 1990s.

Recent records from 2024-2025 show ongoing issues with street cleaning and sidewalk maintenance in the vicinity of the building, with multiple reports of garbage and debris, though these external factors do not directly impact the building's internal conditions. There are no active building violations or complaints on record, and the property has successfully undergone routine housing inspections in 1999, 2007, and 2011. All 2014 renovation permits, which included detailed work descriptions for each unit covering plumbing, electrical, and general improvements, have been completed, indicating proper resolution of building maintenance issues.

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Risk rating

How 655 Natoma 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
53th percentile

Out of 430 buildings in this neighborhood, 202 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
72%
No DBI
violation
28%
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.

Neighborhood (ZIP code)

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

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 56.6%
Moderate concern 25.4%
Severe concern 18.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

655 Natoma St apartment reviews

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The story over time

655 Natoma St event timeline

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

2026
311 Request May 26
Garbage and debris
other bagged boxed contained garbage
311 RequestFeb 26
Light

See all 5 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 655 Natoma 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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