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381 Duncan St

Noe Valley, SF 94131 6601029 2 units · 1 fl · 1900

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

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.

Rent & eviction protection

Is 381 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 1900
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.

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 1900
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
Floors1
Year built1900
Total area1,750 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6601029
Ownership

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

Mailing address
Konstin John K Ttee 63 Ellis St San Francisco CA 94102
Last sale
January 21, 1987

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 381 Duncan Street in Noe Valley is a two-unit, one-story multi-family residential building constructed in 1900, currently owned by the Konstin Family Survivors Trust. The building has undergone several significant maintenance and improvement projects over the past few decades, with the most substantial recent work occurring in 2009, when dry-rot repairs were completed on the front stair and wood retaining wall at a cost of $20,000. This same year, plumbing work was performed to relocate gas and water lines and install a half-inch pipe for an area drain. Earlier maintenance included a stair repair in 2001 and two roofing projects in 1994 and 1995, though these permits have since expired.

The property has generated numerous municipal service calls in recent years, with the most recent issues reported in September 2024 concerning an overgrown tree and garbage/debris on the street, both of which were either accepted or resolved. There appears to be an ongoing pattern of parking problems in the vicinity, with multiple reports of illegal parking, double parking, and sidewalk parking recorded between 2019 and 2024. These parking-related incidents have generally been logged for data collection purposes, with one resolved through citation issuance in 2021. The building's maintenance record shows attention to structural and safety concerns, particularly regarding the front stairs, which have required multiple repairs over the years, though the roof work from the 1990s is now quite dated.

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

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Risk rating

How 381 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
87thpercentile

Out of 1879 buildings in this neighborhood, 244 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
89%
No DBI
violation
11%
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 age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

12-Month risk forecast
Low failure risk 11%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

381 Duncan St apartment reviews

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On the map

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8 found
The story over time

381 Duncan St event timeline

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

2026
Building Permit May 15
Unit a: lower level unit, replace kitchen cabinets, counter tops, (2) bathroom remodel, replace fixtures, wall tiles, flooring, paint and drywall, no changes in layout. trades will be seperate permit.
$75,000 · Issued

See all 1 events

Full history back to 2026 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 381 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 381 Duncan St compares to the neighborhood

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