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645-647 Natoma St

South of Market, SF 94103 3727033 3 units · 3 fl · 1908

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in South of Market — not a forecast
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 645-647 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 1908
2 or more units
3 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.

Statewide backstop · AB 1482

California Tenant Protection Act of 2019

Even when a building isn't covered by local rent stabilization, the statewide Tenant Protection Act (AB 1482) may still apply. It caps annual rent increases and requires the landlord to state a legal reason to end most tenancies.

15+ years since occupancy
Built 1908
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

AB 1482 does not apply to single-family homes and condos unless owned by a corporation, REIT, or an LLC with a corporate member; to owner-occupied duplexes; or to deed-restricted affordable housing. The Act is in effect until January 1, 2030. Not legal advice — see the California landlord–tenant guide.

Building characteristics
Units3
Floors3
Year built1908
Total area4,500 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3727033
Ownership

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

Owner name
Mailing address
Nattrass Realty Po Box 25 Half Moon Bay CA 94019
Last sale
May 01, 2013

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

647 Natoma St, San Francisco, CA 94103
645 Natoma St, San Francisco, CA 94103
645 A Natoma St, San Francisco, CA 94103
Augrented Insights
Initial analysis

The three-unit multi-family residential building at 645-647 Natoma Street, owned by Iyer Shekhar, was constructed in 1908 and stands three stories tall in San Francisco's South of Market neighborhood. The property has undergone several significant maintenance and improvement projects over the past two decades, with the most recent work focusing on water heater replacements in 2023, 2021, and 2019, indicating regular maintenance of essential systems. Other recent improvements include the construction of a home office space with pocket doors in 2019 ($10,000 project), and earlier structural work in 2005 involving the replacement of basement piers and posts ($3,000 project).

The building's history reveals some concerning events from the 1990s, including multiple tenant complaints about maintenance issues, with reports of foundation problems, structural concerns, and various plumbing and electrical issues. A notable incident occurred in 2000 when all front windows were boarded up following a fire. However, there have been no major housing code violations or serious safety incidents reported in recent years. The property has undergone regular housing inspections, including a health and safety inspection in 2010, and appears to have resolved all identified issues. In recent times, there have been recurring issues with street cleanliness and garbage management in the vicinity of the property, as evidenced by multiple 311 calls in 2024 regarding garbage and debris, though these appear to be external to the building itself.

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

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Risk rating

How 645-647 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

Lower risk — safer than most nearby

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Typical — about average for the neighborhood

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Higher risk — riskier than most nearby

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
77thpercentile

Out of 430 buildings in this neighborhood, 99 are predicted to be safer. The band is relative to this neighborhood, so a share of every neighborhood falls in each colour.

RiskiestSafest
Predicted 12-month outcome
82%
No DBI
violation
18%
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 size

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

Building age

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

12-Month risk forecast
Low failure risk 18%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

645-647 Natoma St apartment reviews

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On the map

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The story over time

645-647 Natoma St event timeline

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

2026
311 Request Mar 06
Encampment
Encampment

See all 9 events

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

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Every record we have

Full data for 645-647 Natoma St apartments

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

Side by side

How 645-647 Natoma St compares to the neighborhood

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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