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1808 47Th Ave

Outer Sunset, SF 94122 2083046 4 units · 2 fl · 1965

This building has significantly more problems than most nearby buildings. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Outer Sunset
Above average
avg 1.8
6
FewerMore

This building has 6 novs (7y), above the Outer Sunset average of 1.8.

Rent & eviction protection

Is 1808 47Th 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 1965
2 or more units
4 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.

Building characteristics
Units4
Floors2
Year built1965
Total area2,934 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot2083046
Ownership

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

Owner name
Stephanie Mary Ng Revoc Tr
Mailing address
Ng Stephanie Mary, Ttee 589 Arch St San Francisco CA 94132
Last sale
051397

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 1808 47th Avenue is a 2-story, 4-unit multi-family residential building located in the Outer Sunset neighborhood, owned by the Stephanie Mary Ng Revocable Trust and constructed in 1965. The building has undergone several improvements in recent years, including window and door replacements, siding repairs, and the installation of skylights in 2022-2023. Notable maintenance work has been performed on the roofing in August 2023, and several fire safety and structural maintenance violations were documented and resolved in May-June 2020, including issues with carbon monoxide and smoke alarm compliance, egress obstruction, fire extinguisher requirements, and storage of combustible materials in the garage area.

The building's historical maintenance record shows regular inspections and some concerns requiring attention, such as a 2020 complaint about a sealed exit and outdated smoke alarm batteries in Unit 3. While the property has maintained compliance with building codes since the 2020 violations were abated, there have been recurring issues with parking violations in the vicinity, as evidenced by multiple 311 calls between 2022-2024, primarily related to sidewalk parking and construction equipment blocking spaces, though these were typically unable to be validated by responding officers. A resident complaint regarding construction noise from a neighboring project was filed in August 2022, though this was resolved within days. The building's recent maintenance history indicates active management, with three completed permits in the past two years focusing on window upgrades, roofing, and skylight installation.

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

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Risk rating

How 1808 47Th 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

Grade A–B — Low risk

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Grade C — Moderate risk

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Grade D–F — High risk

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
17th percentile

Out of 632 buildings in this neighborhood, 525 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
48%
No DBI
violation
52%
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.

Number of units

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

Neighborhood location

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

Notices of Violation (past 7 years)

DBI issued Notices of Violation at this address over the last 7 years — a direct record of code enforcement activity.

12-Month severity forecast
No violation 32.2%
Moderate concern 19.5%
Severe concern 48.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

1808 47Th Ave event timeline

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

2026
DBI Complaint Jan 20
Caller's uncle, who is disabled and lives at 1808 47th ave (2nd floor), had his stair lift taken out by the new owners of the building during stair construction.the new owner's stated to caller that a piece of the stair lift was lost during the process of the stair construction. since then, the new owners never replaced and/or fixed the stair lift.please inspect this possible non-compliant ada violation.(311 sr 101003337780)
Disabled Access Division
311 RequestJan 18
Building inspection

See all 16 events

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

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Every record we have

Full data for 1808 47Th Ave apartments

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

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

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