Free SF apartment background check

512 27Th Ave

Central Richmond, SF 94121 1518027A 6 units · 2 fl · 1923

This building has far more open problems than almost any other in the neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Central Richmond
Above average
avg 0.5
1
FewerMore

This building has 1 novs (7y), above the Central Richmond average of 0.5.

Rent & eviction protection

Is 512 27Th 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 1923
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
NC3
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
Units6
Floors2
Year built1923
Total area11,550 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1518027A
Ownership

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

Owner name
Yang Chung Lang 1992 Trust
Mailing address
Chung Lang Yang 340 Loyola Dr Millbrae CA 94030
Last sale
060998

Landlord portfolio

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

Unlock complete report
Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

512 27th Ave, San Francisco, CA 94121
6255 Geary Blvd, San Francisco, CA 94121
Augrented Insights
Initial analysis

The 6-unit, 2-story multi-family residential building at 512 27th Avenue in the Central Richmond district, owned by the Yang Chung Lang 1992 Trust, was constructed in 1923 and has undergone several significant modifications and faced various regulatory challenges over the years. Most recently, in 2023, the building initiated improvements to comply with the Accessible Business Entrance (ABE) program, including the installation of ADA-compliant door operators and signage, while in 2022 it addressed violations related to unpermitted commercial work by replacing tiles in the restaurant dining area. The building's maintenance history includes multiple repairs and upgrades, such as a 2016 roof repair of the rear sunroom area, a 2012 voluntary remodel of two bathrooms for accessibility, and various plumbing modifications.

The property has experienced several enforcement actions, particularly related to its commercial space (Shai Lai Seafood Restaurant), with multiple complaints about unpermitted work in 2012 and 2022, though these issues were generally resolved through subsequent permits and corrections. A routine 2007 housing inspection revealed numerous violations that were subsequently abated, including security, sanitation, and fire safety concerns. The building's safety systems have experienced occasional false alarms, with two documented instances of smoke detector activations and one CO detector activation, none resulting in injuries. Recent 311 calls from late 2024 indicate recurring issues with garbage and debris in the vicinity of the property, though these are primarily street-level concerns rather than building-specific problems. The property holds the appropriate licenses for its commercial use, including ABC licenses for on-sale general eating and Type 41 operations, with the most recent ABE compliance work now in progress.

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 512 27Th 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
8th percentile

Out of 2250 buildings in this neighborhood, 2070 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
52%
No DBI
violation
48%
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.

Building size

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

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

12-Month severity forecast
No violation 40.0%
Moderate concern 51.8%
Severe concern 8.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

512 27Th 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

Create account

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

512 27Th Ave event timeline

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

2026
DBI Complaint Jun 18
Date last observed: 16-jun-26; floor: ground; exact location: main bldg; building type: commercial/business other plumbing; ; additional information: conducted a routine restaurant inspection on 6/16/2026, noticed the grease trap leaking when the adjacent three compartment sink was running. referral to dbi from district inspector j. jang (415-252-3825).;
Plumbing Inspection Division

See all 7 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

Unlock complete timeline
Every record we have

Full data for 512 27Th 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.

Search another address Get full report
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
Most Popular Current plan

Renter

For the weeks when the stakes are highest

$10/mo

Billed $120/year — save $24 vs monthly

  • Unlimited basic reports
  • 5 premium AI reports per month
  • Download PDF & Excel reports
  • Full public records (200 rows per dataset)
  • Full event timeline — every year of history
  • Landlord portfolio & ownership insights
Start Your Search

Less than $0.34/day. Cancel anytime.

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

Watch 512 27Th Ave
Get alerted the moment a new violation or complaint is filed.