Free SF apartment background check

157 Saturn St

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

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 Corona Heights
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Corona Heights average of 1.2.

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.

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
Blumer Werner M
Mailing address
157 Saturn St San Francisco CA 94114
Last sale
000000

Landlord portfolio

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

Unlock complete report
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

Free account unlocks the full analysis — plus 2× more records across all data categories and the complete landlord portfolio.
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

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
68th percentile

Out of 348 buildings in this neighborhood, 111 are predicted to be safer.

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 severity forecast
No violation 78.2%
Moderate concern 14.7%
Severe concern 7.0%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

157 Saturn St apartment reviews

Real experiences from people who have lived here. Share yours to help other renters decide.

Share your experience — Help other renters by leaving an honest apartment review

Loading reviews…

On the map

Compare nearby alternatives

This building and nearby alternatives, color-coded by risk level. Click any marker to explore.

Buildings nearby
Loading…
The story over time

157 Saturn St event timeline

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

2026
311 Request Mar 21
Blocking driveway cite only
Parking Enforcement
311 RequestMar 20
Abandoned vehicle

See all 5 events

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

Unlock complete timeline
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.

Still apartment hunting in SF?

Look up the next apartment before you sign

Search any SF address free — no account needed to see the risk rating.

Simple pricing

Get the complete picture

Every plan unlocks the complete report: all 13 SF datasets, full history, landlord portfolio, and PDF & Excel exports.

Report Bundle

For the buildings you're deciding on right now

$10 one-time

~$3.33 per building. No subscription ever. Each credit unlocks one building's premium report for 30 days.

  • 3 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 3 Reports — $10

Apartment Hunter

For a wide search across many buildings

$39 one-time

30 reports — ~$1.30 each. No subscription ever.

  • 30 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 30 Reports — $39

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

Watch 157 Saturn St
Get alerted the moment a new violation or complaint is filed.