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981 Duncan St

Diamond Heights, SF 94131 7513050 2 units · 2 fl · 1962

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 Diamond Heights — not a forecast
At or below average
avg 0.0
0
FewerMore

This building has 0 novs (7y), at or below the Diamond Heights average of 0.0.

This building's 14% risk is low in absolute terms; it rates higher-risk here only because buildings in Diamond Heights generally score better. The colour is relative to the neighborhood, the percentage is not.

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 981 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 1962
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 1962
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
Floors2
Year built1962
Total area2,838 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot7513050
Ownership

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

Mailing address
Family Trust 46 Bayview Ter Mill Valley CA 94941
Last sale
January 14, 1998

Landlord portfolio

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

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Augrented Insights
Initial analysis

The two-unit residential building at 981 Duncan Street in Diamond Heights, owned by Edward K & Joanne A Sato, is a two-story flats and duplex structure constructed in 1962. The building has undergone several significant renovations over its lifetime, with the most substantial work occurring in 1997 when multiple repairs were undertaken to address dry rot issues, including work on the rear stairs, front deck, and an elevation of the front window sill. Additional structural improvements were made that year through a horizontal addition. More recent maintenance includes a complete reroofing project in 2011 costing $13,900, followed by front repairs and dry rot treatment that same year.

The property has experienced recurring issues with dry rot, particularly in the 1997 period when multiple repairs were needed. The building's maintenance record shows attention to structural integrity, particularly regarding moisture-related damage. Outside the building itself, there has been a notable pattern of abandoned vehicle reports in the vicinity, with multiple incidents recorded between 2023 and 2024, though all were resolved with vehicles gone upon inspection. Recent 311 calls from September 2024 have primarily concerned street-related issues such as garbage, debris, and parking violations, which are more reflective of neighborhood conditions than building-specific problems. The building's permit history suggests regular upkeep and addressing of maintenance issues, particularly focusing on exterior elements such as roofing, stairs, and decks.

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

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Risk rating

How 981 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
11thpercentile

Out of 17 buildings in this neighborhood, 15 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
86%
No DBI
violation
14%
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.

Neighborhood location

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

Building age

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

Building age

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

12-Month risk forecast
Low failure risk 14%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

981 Duncan St apartment reviews

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On the map

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The story over time

981 Duncan St event timeline

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

No dated public records on file yet.
Every record we have

Full data for 981 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 981 Duncan St compares to the neighborhood

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