Free SF apartment background check

3379-3381 21St St

Eureka Valley/Dolores Heights, SF 94110 3617066 2 units · 4 fl · 1909

A handful of records on file over the last seven years, and our model sees a moderate chance of more in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Eureka Valley/Dolores Heights — not a forecast
At or below average
avg 1.4
1
FewerMore

This building has 1 novs (7y), at or below the Eureka Valley/Dolores Heights average of 1.4.

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 3379-3381 21St 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 1909
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH3
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 1909
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
Floors4
Year built1909
Total area6,068 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3617066
Ownership

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

Mailing address
Po Box 641045 San Francisco CA 94164
Last sale
July 13, 2017

Landlord portfolio

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

Unlock complete report
Multiple entrances & addresses

Included addresses

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

3381 21st St, San Francisco, CA 94110
3379 21st St, San Francisco, CA 94110
Augrented Insights
Initial analysis

The three-story multi-family residential building at 3379-3381 21st Street, owned by Green Hills Views LLC, has undergone significant modifications since 2018. The property, constructed in 1909, consists of two units and has experienced several major renovations, including the installation of a comprehensive fire sprinkler system with 87 heads throughout the building in 2019-2020 (costing approximately $70,000 for both labor and equipment), followed by extensive interior remodeling in 2018-2023. Recent unauthorized modifications in unit 3381 led to a violation notice in 2021, citing unpermitted changes including bathroom additions and bedroom conversions, which the owner has attempted to rectify through subsequent permits in 2023-2024. The building has faced scrutiny regarding alleged illegal rooming/boarding house practices, with complaints about unauthorized room rentals, though this violation was marked as "Not Active" in October 2023.

The property underwent substantial improvements in 2018-2019, including complete plumbing renovations for multiple bathrooms, kitchen, and laundry facilities, along with electrical system upgrades. A recent complaint filed in January 2025 suggests ongoing concerns about unauthorized construction work and potential permit violations, though this case is still active. While there have been several 311 calls regarding the property, primarily related to street issues and noise, there have been no recorded fire incidents or civilian injuries associated with the building. The property's extensive renovation history, including multiple permit modifications and compliance efforts, indicates an ongoing process of updating and maintaining the building to meet modern safety and living standards, though with some challenges regarding unauthorized modifications and building code compliance.

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 3379-3381 21St 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
11thpercentile

Out of 1278 buildings in this neighborhood, 1137 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
44%
No DBI
violation
56%
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.

Director's hearings (past 7 years)

Director's hearings are escalated enforcement actions for buildings that haven't resolved violations — a serious signal.

Building size

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

DBI complaint rate, owner's portfolio

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

12-Month risk forecast
Moderate failure risk 56%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

3379-3381 21St 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.

The story over time

3379-3381 21St St event timeline

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

2025
Building Permit Jul 30
Revision to 202406114239. unit 3381 2nd fl remove non bearing wall between bedroom 1 and bedroom 2 at 2nd fl. convert powder room into bathroom. convert hallway bath to master bath. 1st fl convert poweder room into closet. convert 2 bath into 1 bathroom.
$3,600 · Complete
Plumbing PermitMar 20
Remodel 2 bathrooms in kind, new tub, toilets, shower, new faucet, sink, all plumbing as need. 1 shower pan.

See all 16 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

Unlock complete timeline
Every record we have

Full data for 3379-3381 21St St apartments

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

Side by side

How 3379-3381 21St St compares to the neighborhood

This building against comparable properties in Eureka Valley/Dolores Heights. Toggle filters to narrow the peer group.

Loading comparables…
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.

Pay once

Report Bundle

For the buildings you're deciding on right now

$10one time

3premium reports

$3.33 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 3 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them
Pay once

Apartment Hunter

For a wide search across many buildings

$39one time

30premium reports

$1.30 per report · charged once, never renews

Each credit unlocks one building's premium report for 30 days.

  • 30 premium reports — AI executive summary included
  • Live data across all 27 public record types
  • 200 records per dataset
  • PDF & Excel exports included
  • Compare up to 10 buildings side-by-side
  • Credits never expire until you use them

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

Watch 3379-3381 21St St
Get alerted the moment a new violation or complaint is filed.