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3640 18Th St

Mission Dolores, SF 94110 3578089 4 units · 3 fl · 1991

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Mission Dolores — not a forecast
At or below average
avg 2.9
0
FewerMore

This building has 0 novs (7y), at or below the Mission Dolores average of 2.9.

Rent & eviction protection

Is 3640 18Th 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 1991
2 or more units
4 units
Property type
Multi-Family Residential
Zoning
RM2
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

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 1991
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
May be covered by AB 1482. The building is old enough for the statewide rent cap (5% + regional CPI, capped at 10% per year) and just-cause protection after 12 months of tenancy.

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
Units4
Floors3
Year built1991
Total area5,334 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot3578089
Ownership

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

Mailing address
2425 16th Ave San Francisco CA 94116
Last sale

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-story, four-unit multi-family residential building at 3640 18th Street in the Mission Dolores neighborhood was constructed in 1991 by Anthony W.H. Wong and Ivone M. Wong, and has undergone several significant renovations and improvements over its lifetime. Most recently, in September 2023, Unit C received substantial updates including a kitchen and bathroom remodel with new cabinets, tiles, plumbing fixtures, and a shower conversion. Previous notable improvements include a major window replacement project in 2015, where all 30 aluminum windows were upgraded to fiberglass or vinyl, and stucco repairs were completed due to cracking. The building has a documented history of addressing safety concerns, with three routine housing inspections (2001, 2007, 2011) revealing various fire safety issues that were subsequently resolved, including concerns about combustible storage in the garage, fire extinguisher requirements, and alarm system certifications.

The property has maintained compliance with building codes and safety regulations, as evidenced by the completion of multiple building, plumbing, and electrical permits. The recent windows project, along with systematic updates to individual units, demonstrates ongoing maintenance and improvement of the property. The building has experienced occasional graffiti and sidewalk issues in recent years, as documented in 311 calls, though these are generally not directly related to the building's condition. The surrounding area has shown typical urban challenges such as graffiti on postal equipment, which have been appropriately routed to the responsible authorities for resolution. Recent activity has primarily focused on individual unit improvements, with no major system-wide issues reported since the 2011 inspection.

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

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Risk rating

How 3640 18Th 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

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
72ndpercentile

Out of 799 buildings in this neighborhood, 224 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
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.

Neighborhood (ZIP code)

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

12-Month risk forecast
Low failure risk 23%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

3640 18Th St apartment reviews

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On the map

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The story over time

3640 18Th St event timeline

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

2025
311 Request Jun 29
Other excessive noise
Noise
311 RequestApr 01
Parking on sidewalk

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 3640 18Th St apartments

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

Side by side

How 3640 18Th St compares to the neighborhood

This building against comparable properties in Mission Dolores. 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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