Free SF apartment background check

1851 8Th Ave

Inner Sunset, SF 94122 2045009 11 units · 3 fl · 1960

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Sunset
Above average
avg 1.1
4
FewerMore

This building has 4 novs (7y), above the Inner Sunset average of 1.1.

Rent & eviction protection

Is 1851 8Th Ave 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 1960
2 or more units
11 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
Units11
Floors3
Year built1960
Total area9,963 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2045009
Ownership

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

Owner name
Colabianchi Sebastian F
Mailing address
2819 Arguello Dr Burlingame CA 94010
Last sale
052096

Landlord portfolio

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

Unlock complete report
Augrented Insights
Initial analysis

The 11-unit, 3-story multi-family residential building at 1851 8th Avenue in the Inner Sunset neighborhood has undergone several significant improvements and faced various maintenance challenges since its construction in 1960. Most notably, the building completed a mandatory soft-story retrofit in 2017-2019, bringing it into compliance with seismic safety requirements. Recent improvements include the installation of a new domestic hot water system in January 2024, though there were previous water supply issues in 2019 when a complaint was filed about unpaid water bills. The building has experienced recurring issues with fire safety equipment, as evidenced by multiple fire complaints between 2016-2023 regarding alarms, extinguishers, and exit maintenance, though most have been marked as "Condition Corrected." There have been three documented sewage backup incidents (2017, 2021, 2022) and various plumbing issues including a gas meter relocation in 2018 and historical repairs to address dry rot in 1998 and 2005.

The property has maintained some infrastructure improvements over the years, including reroofing in 1998 and stucco repairs in 1993. Building systems have received attention through various permits and inspections, including a street space permit in 2018, though some older permits from the 1980s and 1990s were marked as expired. Several routine housing inspections have been conducted over the years, with the most significant violations occurring in 2002 when multiple fire safety issues were identified, including problems with fire escapes, fire proofing, and extinguisher maintenance - all of which were subsequently abated. The building's ownership has generally addressed maintenance issues as they arise, though there have been periods indicating potential infrastructure challenges, including the 2019 water supply issue and recurring fire safety equipment concerns.

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 1851 8Th Ave'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
5th percentile

Out of 1493 buildings in this neighborhood, 1418 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
31%
No DBI
violation
69%
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.

Building size

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

Neighborhood location

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

12-Month severity forecast
No violation 17.0%
Moderate concern 25.2%
Severe concern 57.8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1851 8Th Ave 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

1851 8Th Ave event timeline

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

2025
Fire Complaint Sep 12
Extinguishers
Violation Issued
Fire ComplaintSep 12
Exit Maintenance

See all 6 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

Unlock complete timeline
Every record we have

Full data for 1851 8Th Ave 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 1851 8Th Ave
Get alerted the moment a new violation or complaint is filed.