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646-648 10Th Ave

Inner Richmond, SF 94118 1635028A 2 units · 2 fl · 1915

A handful of records on file over the last seven years, and our model puts this building at a low risk of further maintenance problems in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Inner Richmond — not a forecast
At or below average
avg 0.9
0
FewerMore

This building has 0 novs (7y), at or below the Inner Richmond average of 0.9.

Rent & eviction protection

Is 646-648 10Th 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 1915
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.

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 1915
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
Local rent control likely takes priority. This building appears to fall under the local ordinance above, which is stronger than AB 1482. Where a local just-cause ordinance applies, its rules govern instead of the state cap.

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 built1915
Total area3,112 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1635028A
Ownership

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

Owner name
Mailing address
Lee Wai Tung & Lau May M Le 648 10Th Ave San Francisco CA 94118
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.

648 A 10th Ave, San Francisco, CA 94118
646 10th Ave, San Francisco, CA 94118
648 10th Ave, San Francisco, CA 94118
Augrented Insights
Initial analysis

The 646-648 10th Avenue property is a two-unit, 2-story multi-family residential building constructed in 1915, currently undergoing extensive renovations under the ownership of Wai Oil Lee Tr. The building is undergoing significant structural and systems upgrades, including recent permits for post and beam installations in both 646 and 648 units, conversion of closets to bathrooms, installation of skylights, and comprehensive roof repairs addressing dry rot issues. Major electrical improvements are being implemented, including complete rewiring to replace outdated knob and tube wiring, installation of new 200-amp service panels, and replacement of all windows with energy-efficient models. The building is also undergoing substantial plumbing upgrades, including replacement of galvanized pipes with copper, new water heaters, furnace replacements, and kitchen and bathroom remodels in both units.

Two active building complaints have been filed in 2023 regarding work beyond the scope of permits and unpermitted expansion to the garage space, suggesting some ongoing concerns about construction compliance. Historical records show the building faced fire safety violations in 2008 related to parking garage storage and egress obstruction, though these were resolved by May 2009. The property has undergone multiple system replacements and improvements over the years, including a complete sewer system upgrade in 2009 and various maintenance and repair works documented through 311 calls, though most recent external issues such as pavement defects and graffiti were resolved through appropriate city channels. The extensive ongoing renovations, while addressing many historical issues such as dry rot and outdated systems, represent a significant construction project that may temporarily impact resident comfort and building access.

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

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Risk rating

How 646-648 10Th 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
92ndpercentile

Out of 1723 buildings in this neighborhood, 138 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
92%
No DBI
violation
8%
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.

Building age

Older buildings tend to have more maintenance challenges; SF's pre-1906 earthquake housing stock carries distinct risk.

DBI complaint rate, owner's portfolio

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

12-Month risk forecast
Low failure risk 8%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

646-648 10Th Ave apartment reviews

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On the map

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The story over time

646-648 10Th Ave event timeline

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

2025
Plumbing Permit Jun 30
To renew permit # pm20230420563 (replace furnace in each unit)
Issued
Building PermitMay 06
To obtain final inspection for work approved udner pa#: 202309015828, 202306291226, and 202304276637. all work is complete.

See all 17 events

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

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Every record we have

Full data for 646-648 10Th Ave apartments

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

Side by side

How 646-648 10Th Ave compares to the neighborhood

This building against comparable properties in Inner Richmond. Toggle filters to narrow the peer group.

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

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