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157 Saturn St

Corona Heights, SF 94114 2645031 2 units · 2 fl · 1926

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 Corona Heights — not a forecast
At or below average
avg 1.3
0
FewerMore

This building has 0 novs (7y), at or below the Corona Heights average of 1.3.

Rent & eviction protection

Is 157 Saturn 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 1926
2 or more units
2 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 1926
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
Units2
Floors2
Year built1926
Total area1,444 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2645031
Ownership

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

Owner name
Mailing address
157 Saturn St San Francisco CA 94114
Last sale
—

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, two-story residential building at 157 Saturn Street in Corona Heights, owned by Werner M. Blumer, has a documented history of structural and plumbing issues spanning several decades since its construction in 1926. The property has undergone multiple foundation-related work, with the south-west corner raised in 1986 and additional work completed in 1993, though an earlier permit from 1988 for foundation work is noted as expired. More recent plumbing infrastructure improvements include a gas houseline extension completed in 2013 and sewer repairs completed in 2009 following a notable incident where dyed sewer water leaked into a neighbor's property.

The building experienced significant maintenance challenges around 2013-2014, with multiple violations issued for interior surface damage, including compromised ceilings, water damage, and concerns about roof deck waterproofing, leading to designation as a "nuisance" property under San Francisco Health Code Section 1001-d. These violations were eventually abated in January 2014. A persistent drainage issue was documented in 2014, with complaints about an ineffective drainage grate that led to water pooling affecting neighboring properties. The property has also generated multiple 311 calls regarding abandoned vehicles in the vicinity between 2022 and 2024, though these are unrelated to the building's condition and primarily concern street parking issues. While the building's historical record shows periods of maintenance and repairs, particularly regarding its foundation and plumbing systems, the concentration of violations and complaints in 2013-2014 suggests a period of significant maintenance challenges that were subsequently addressed.

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

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Risk rating

How 157 Saturn 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
67thpercentile

Out of 348 buildings in this neighborhood, 115 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
86%
No DBI
violation
14%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

12-Month risk forecast
Low failure risk 14%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

157 Saturn St apartment reviews

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On the map

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8 found
The story over time

157 Saturn St event timeline

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

2026
Electrical Permit Jul 30
Replace main feeder between meter and whether heat.
Issued
311 RequestMar 21
Blocking driveway cite only

See all 6 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 157 Saturn St apartments

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

Side by side

How 157 Saturn St compares to the neighborhood

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