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1227 York St

Inner Mission, SF 94110 4266026 4 units · 2 fl · 1900

Nothing on record for this building in the last seven years. Our model still sees a moderate chance of maintenance problems in the next 12 months, from the owner's wider portfolio and the surrounding area rather than from anything recorded here. 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 Inner Mission — not a forecast
At or below average
avg 2.7
0
FewerMore

This building has 0 novs (7y), at or below the Inner Mission average of 2.7.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 1227 York 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 1900
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RH2
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 1900
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
Units4
Floors2
Year built1900
Total area1,986 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot4266026
Ownership

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

Owner name
Mailing address
37115 San Antonio St Newark CA 94560
Last sale
—

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.

1227 A York St, San Francisco, CA 94110
1227 York St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The property at 1227 York Street in San Francisco's Inner Mission neighborhood is a two-story, four-unit multi-family residential building constructed in 1900, currently owned by Renee M. Tomasello. The building has undergone several significant renovations over the past two decades, most notably in 2008-2009 when multiple improvements were made including window replacements, plumbing updates, and electrical work. During this period, the property experienced a serious violation in February 2008 regarding unauthorized construction of a possibly illegal rear building, which included unpermitted plumbing and electrical work; this was ultimately resolved by March 2009. A routine housing inspection in January 2009 revealed multiple safety and security issues including concerns about combustible storage, exterior door self-closing devices, handrails, entry doors, and fire safety equipment, though these violations were also abated by March 2009.

The building's maintenance history shows regular upkeep, with permitted work including window replacements in 2008 and 2009, and various improvements to both the front and rear buildings. The property has been subject to several 311 calls in recent years, primarily related to street cleaning and parking issues, with the most recent calls regarding garbage and debris in December 2024. Previous complaints from 1999 and 2008 suggested concerns about illegal unit occupancy and unauthorized renovations, though these issues were resolved. Planning records confirm the resolution of the unauthorized construction and permit violations from 2008, with the status listed as "Closed - Abated." The building has been maintained with various permitted improvements, though the concentration of violations in early 2009 indicates a period of significant regulatory scrutiny that appears to have been successfully resolved.

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

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Risk rating

How 1227 York 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
27thpercentile

Out of 2380 buildings in this neighborhood, 1737 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
51%
No DBI
violation
49%
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 location

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

Neighborhood location

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

12-Month risk forecast
Moderate failure risk 49%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1227 York St apartment reviews

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On the map

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Buildings nearby
8 found
The story over time

1227 York St event timeline

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

2025
311 Request Oct 08
Garbage and debris
other loose garbage debris yard waste

See all 2 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 1227 York St apartments

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

Side by side

How 1227 York St compares to the neighborhood

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