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527 Natoma St

South of Market, SF 94103 3726051 2 units · 2 fl · 1986

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 527 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 1986
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RED
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

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 1986
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
May be covered by AB 1482. The building is old enough for the statewide rent cap (5% + regional CPI, capped at 10% per year) and just-cause protection after 12 months of tenancy.

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
Units2
Floors2
Year built1986
Total area2,750 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3726051
Ownership

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

Mailing address
Ingeborg E & James J Byrnes 19 Vista Verde Ct San Francisco CA 94131
Last sale
July 11, 2002

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 527 Natoma Street, owned by the Cecil H Byrnes Revocable Trust, was constructed in 1986 and is classified as a Flats & Duplex property. The building has undergone two major maintenance projects over its lifetime, including a comprehensive window replacement project in 2020 costing $10,000, where 18 windows were updated with aluminum single-hung windows on the front facade and vinyl frames on the rear, meeting modern U-factor energy efficiency standards. Prior to that, in 2016, the property received a new roof through a project valued at $24,870. Both of these improvements were properly permitted and completed according to city records.

The property and its immediate vicinity have experienced recurring issues with street cleanliness and maintenance, particularly in 2023-2024, with multiple 311 calls regarding loose garbage and general cleaning needs. Noteworthy concerns include a medical waste incident involving needles reported in January 2024, though this was not directly within the building's property boundary. There were also several incidents of abandoned vehicles and illegal parking in the vicinity during mid-2023, all of which were promptly addressed by city authorities. While these external maintenance issues have been documented through city service calls, they reflect neighborhood conditions rather than direct building management concerns. The building's maintenance record shows proper attention to major systems through permitted improvements, with no recorded building code violations or safety concerns in the available data.

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

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Risk rating

How 527 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
81stpercentile

Out of 430 buildings in this neighborhood, 82 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
83%
No DBI
violation
17%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

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 risk forecast
Low failure risk 17%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

527 Natoma St apartment reviews

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On the map

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8 found
The story over time

527 Natoma St event timeline

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

2026
311 Request Jun 20
Homelessness and supportive housing
housing homeless request for service

See all 5 events

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

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Every record we have

Full data for 527 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 527 Natoma St compares to the neighborhood

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