Free SF apartment background check

405-411 Duncan St

Noe Valley, SF 94131 6602002 4 units · 2 fl · 1908

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 Noe Valley — not a forecast
At or below average
avg 1.2
0
FewerMore

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

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 405-411 Duncan 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 1908
2 or more units
4 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 1908
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
Units4
Floors2
Year built1908
Total area4,384 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot6602002
Ownership

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

Owner name
Mailing address
411 Duncan St San Francisco CA 94131
Last sale
January 30, 1998

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

407 Duncan St, San Francisco, CA 94131
409 Duncan St, San Francisco, CA 94131
405 Duncan St, San Francisco, CA 94131
411 Duncan St, San Francisco, CA 94131
Augrented Insights
Initial analysis

The property at 405-411 Duncan Street in Noe Valley is a two-story, four-unit multi-family residential building constructed in 1908, currently owned by Salo Rawet. The building has undergone several significant structural and maintenance improvements over the past two decades, most notably foundation replacement in 2003 ($35,000), installation of a complete electrical system with individual meters in 2003 ($10,050), and various deck repairs in recent years. The property has experienced recurring issues with deck maintenance, with multiple dry rot repairs conducted in both 2023 and 2024 on the rear upper and lower decks, raising concerns about structural integrity. Recent building complaints from November 2023 suggest unauthorized expansion of deck areas beyond the scope of permitted dry rot repairs. The property has also faced challenges related to a retaining wall project, with multiple complaints filed in 2021-2022 regarding discrepancies between approved plans and actual construction, including concerns about drainage, structural support, and property line setbacks.

The building's maintenance history shows regular upkeep, including electrical and plumbing upgrades in 2012, and various repairs to common areas. Historical violations from 2000 regarding gas meter safety requirements were promptly addressed within two months of filing. Recent concerns primarily focus on deck repairs and retaining wall construction, with several complaints filed by neighbors regarding potential safety and code compliance issues. The property has experienced typical urban residential issues as evidenced by 311 calls, mostly related to parking enforcement and routine maintenance matters. Two routine housing inspections in 2001 and 2008 showed no significant problems. While the building has undergone numerous repairs and improvements over the years, the recurring nature of deck-related issues and recent complaints about unauthorized modifications suggest potential concerns about maintenance oversight and compliance with building codes.

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

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Risk rating

How 405-411 Duncan 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
8thpercentile

Out of 1879 buildings in this neighborhood, 1729 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
43%
No DBI
violation
57%
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.

DBI tenant complaints (past 7 years)

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

Number of units

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

Owner's portfolio size

Number of SF parcels this owner is registered on — larger portfolios have distinct risk patterns.

12-Month risk forecast
Moderate failure risk 57%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

405-411 Duncan St apartment reviews

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On the map

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The story over time

405-411 Duncan St event timeline

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

2026
311 Request Jul 22
Sidewalk defect
collapsed sidewalk
311 RequestMay 11
Municipal transportation agency

See all 15 events

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

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Every record we have

Full data for 405-411 Duncan St apartments

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

Side by side

How 405-411 Duncan St compares to the neighborhood

This building against comparable properties in Noe Valley. Toggle filters to narrow the peer group.

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

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