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400-402 Plymouth Ave

Oceanview, SF 94112 7103018D 2 units · 2 fl · 1948

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Oceanview
At or below average
avg 1.4
0
FewerMore

This building has 0 novs (7y), at or below the Oceanview average of 1.4.

Rent & eviction protection

Is 400-402 Plymouth 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 1948
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.

Building characteristics
Units2
Floors2
Year built1948
Total area2,274 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot7103018D
Ownership

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

Owner name
Huang Xiao Ying
Mailing address
400 Plymouth Ave San Francisco CA 94112
Last sale
111709

Landlord portfolio

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

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Multiple entrances & addresses

Included addresses

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

402 Plymouth Ave, San Francisco, CA 94112
400 Plymouth Ave, San Francisco, CA 94112
Augrented Insights
Initial analysis

The two-unit, two-story residential building at 400-402 Plymouth Avenue in Oceanview, owned by Huang Xiao Ying, was constructed in 1948 and has undergone several significant modifications over its lifetime. Most notably, in 2019, the property underwent a significant exterior renovation when the owner replaced plastic siding with James Hardie cement boards, a project completed in February 2019 at a cost of $15,000. The building's interior was expanded in 2004 with the addition of two bedrooms, a full bath, and a laundry room on the ground floor, along with corresponding electrical work including the installation of 7 lights, 8 switches, 14 receptacles, and 5 circuits.

The property has experienced some compliance and safety concerns in recent years, particularly regarding unauthorized modifications. In 2014, there were complaints about an illegal unit built over the garage without permits, and similar concerns were documented in 2013 regarding the basement area, though these complaints are now listed as not active. There have been recurring maintenance issues documented through 311 calls, primarily relating to street cleaning and debris removal between 2023-2025, including multiple reports of loose garbage, furniture, and other debris. The property has also generated several parking enforcement calls between 2019-2023, involving vehicles blocking driveways or parking on sidewalks, resulting in at least two citations being issued. Additionally, there were multiple street space permits issued between late 2018 and 2019, though these permits had minimal cost ($0 or $1) and their specific purpose is not detailed in the records.

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

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Risk rating

How 400-402 Plymouth 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
87th percentile

Out of 79 buildings in this neighborhood, 10 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
84%
No DBI
violation
16%
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.

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

Neighborhood (ZIP code)

The ZIP code captures local housing market and enforcement patterns that affect all buildings in the area.

12-Month severity forecast
No violation 72.0%
Moderate concern 14.6%
Severe concern 13.4%
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

400-402 Plymouth Ave event timeline

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

2023
311 Request Apr 07
Blocking driveway cite only
black - Honda - 9BLG216

See all 1 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 400-402 Plymouth 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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