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1635-1637 Lake St

Lake Street, SF 94121 1377044 2 units · 2 fl · 1916

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 Lake Street
Above average
avg 0.6
2
FewerMore

This building has 2 novs (7y), above the Lake Street average of 0.6.

Rent & eviction protection

Is 1635-1637 Lake 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 1916
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 built1916
Total area2,718 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1377044
Ownership

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

Owner name
Hung Yaw-Jin
Mailing address
1635 Lake St San Francisco CA 94121
Last sale
000000

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.

1637 Lake St, San Francisco, CA 94121
1635 Lake St, San Francisco, CA 94121
Augrented Insights
Initial analysis

The property at 1635-1637 Lake Street is a two-unit, two-story multi-family residential building constructed in 1916, currently owned by Hung Yaw-jin. The building has undergone several significant structural modifications and improvements over the years, with the most critical work occurring in 2020 when two separate Notices of Violation were filed regarding potentially unsafe structural modifications, including concerns about unsupported beams and unsafe stair replacements. These violations, filed in March 2020, were eventually abated by January 2025 following the installation of steel beams to support existing framing and the replacement of a backyard staircase with a new steel staircase, for which a $10,000 building permit was issued and completed in July 2020. The property has a history of maintenance and improvements dating back to 1991, including reroofing, a sewer/housetrap replacement in 2014, and electrical upgrades in 2003 for garage door opener installation and underground service conversion.

Additional historical context includes a housing inspection in 1996 regarding an allegedly illegal ground floor unit, which was resolved within two months. The building has experienced multiple parking-related issues in its vicinity, with six documented incidents between 2020-2022 involving vehicles blocking driveways or parking on sidewalks. Recent maintenance concerns were addressed in 2022-2023, including flooding issues and two tree-related complaints in 2020. The most recent planning approval, dated November 2019, permitted the reconstruction of an existing deck and stair structure with specific conditions regarding firewalls. While there were initial concerns about unpermitted construction work in 2020 that generated multiple complaints, these have been resolved through proper permitting and completion of required structural modifications.

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

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Risk rating

How 1635-1637 Lake 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

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
30th percentile

Out of 660 buildings in this neighborhood, 462 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
76%
No DBI
violation
24%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

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 61.4%
Moderate concern 32.3%
Severe concern 6.2%
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

1635-1637 Lake St event timeline

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

2020
Building Permit Jul 06
To comply with nov# 202025241add steel beam to support (e) framing, comply with nov 2020153 replace (e) backyard staircase wtih new steel staircase
$10,000 · Complete
Building Violation (NOV)Mar 30
Removed stairs (+/- 14 risers) add wood balcony at south east corner of building. replaced wood framing for balcony with structural steel. replaced wood stringers with a steel beam to support stair threads not yet installed. code/section: sfbc 103a monthly monitoring fee applies. code/section: sfbc 110a, table 1a-k

See all 5 events

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

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Every record we have

Full data for 1635-1637 Lake St apartments

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

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