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1660-1664 48Th Ave

Outer Sunset, SF 94122 1896031 2 units · 2 fl · 1991

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 Outer Sunset — not a forecast
At or below average
avg 1.8
0
FewerMore

This building has 0 novs (7y), at or below the Outer Sunset average of 1.8.

Rent & eviction protection

Is 1660-1664 48Th 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 1991
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

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 1991
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
May be covered by AB 1482. The building is old enough for the statewide rent cap (5% + regional CPI, capped at 10% per year) and just-cause protection after 12 months of tenancy.

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 built1991
Total area2,625 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1896031
Ownership

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

Owner name
Mailing address
1660 48th Ave San Francisco CA 94122
Last sale
—

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.

1664 48th Ave, San Francisco, CA 94122
1662 48th Ave, San Francisco, CA 94122
1660 48th Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The two-unit residential building at 1660-1664 48th Avenue in San Francisco's Outer Sunset neighborhood, owned by Maura Duffy, was constructed in 1991 following a series of significant modifications to the original structure. The property underwent comprehensive changes in 1989 including both horizontal and vertical additions, and a sprinkler system was installed in 1991 to enhance safety features. The building's maintenance record shows attention to structural upkeep, most notably with a $15,500 reroofing project completed in 2021. However, there have been recurring sewer issues, with two documented sewage backup incidents (in April 2022 and most recently in January 2024) involving a 4-inch sewer vent that required attention from PUC Sewer Operations. The property has undergone regular housing inspections, with routine inspections in 1999 and 2002 showing compliance with housing standards.

Recent activities around the property have primarily involved external maintenance and parking-related incidents. In 2023, there was a service request related to an unpermitted planter box placement near the curb, and there have been several parking enforcement actions, including citations for vehicles blocking driveways and one instance of sidewalk parking in 2022. The building's historical records (dating back to 1988) show that a demolition attempt for an earlier apartment building was withdrawn, leading to the current structure's construction with documented approvals for facade changes and building additions. While the property has maintained basic safety and habitability standards, the recurring sewer issues and periodic parking challenges in the vicinity are notable aspects of the building's recent history.

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

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Risk rating

How 1660-1664 48Th 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

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
56thpercentile

Out of 632 buildings in this neighborhood, 278 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
81%
No DBI
violation
19%
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.

Neighborhood location

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

Property class: multi-family flat

2–4 unit flats (class F) are a common SF building type with their own maintenance and complaint patterns.

12-Month risk forecast
Low failure risk 19%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1660-1664 48Th Ave apartment reviews

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On the map

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8 found
The story over time

1660-1664 48Th Ave event timeline

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

2021
Building Permit Oct 12
Reroofing
$15,500 · Issued

See all 1 events

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

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Every record we have

Full data for 1660-1664 48Th Ave apartments

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

Side by side

How 1660-1664 48Th Ave compares to the neighborhood

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