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805-811 27Th Ave

Central Richmond, SF 94121 1670001 4 units · 2 fl · 1936

This building has more problems than most buildings in this neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Central Richmond
At or below average
avg 0.5
0
FewerMore

This building has 0 novs (7y), at or below the Central Richmond average of 0.5.

Rent & eviction protection

Is 805-811 27Th 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 1936
2 or more units
4 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
Units4
Floors2
Year built1936
Total area3,890 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1670001
Ownership

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

Owner name
Hong Jing Lang & Li Jenny H
Mailing address
807 27th Ave San Francisco CA 94121
Last sale
093011

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.

805 27th Ave, San Francisco, CA 94121
809 27th Ave, San Francisco, CA 94121
811 27th Ave, San Francisco, CA 94121
807 27th Ave, San Francisco, CA 94121
Augrented Insights
Initial analysis

The four-unit, two-story apartment building at 805-811 27th Avenue in the Central Richmond neighborhood, constructed in 1936, has undergone significant structural and cosmetic improvements, most notably an $18,000 foundation reinforcement project completed in 2010 that addressed serious structural concerns identified in 2007-2009. During the 2009 renovation period, the building received comprehensive updates including kitchen and bathroom remodels in units 805, 809, and 811, along with electrical upgrades for all units that encompassed lighting, wiring, and bathroom facilities improvements, with costs totaling over $45,000. The property experienced several serious issues between 2007 and 2009, including structural instability, inadequate heating, and security concerns, all of which were ultimately resolved through the various improvements and repairs carried out in 2009-2010. Since these major renovations, there have been no recorded building violations or major complaints regarding habitability or safety.

The most recent planning application proposes converting non-occupied ground floor space to living quarters and making additional bathroom modifications, indicating ongoing improvements to the property. Recent records from 2024-2025 show only minor issues, primarily related to parking violations and street cleaning matters, with multiple citations issued for driveway blocking and several cases of abandoned debris requiring sanitation services. These recent maintenance and compliance records suggest that the property management is currently maintaining the building to acceptable standards, with no recurring structural or habitability concerns similar to those experienced in previous years.

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

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Risk rating

How 805-811 27Th 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
28th percentile

Out of 2250 buildings in this neighborhood, 1620 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
77%
No DBI
violation
23%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

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 severity forecast
No violation 62.4%
Moderate concern 15.0%
Severe concern 22.5%
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

805-811 27Th Ave event timeline

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

2026
311 Request Apr 28
Garbage and debris
other loose garbage debris yard waste

See all 5 events

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

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Every record we have

Full data for 805-811 27Th 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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