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638 45Th Ave

Outer Richmond, SF 94121 1587031 5 units · 3 fl · 1908

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 Outer Richmond
Above average
avg 0.7
1
FewerMore

This building has 1 novs (7y), above the Outer Richmond average of 0.7.

Rent & eviction protection

Is 638 45Th 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 1908
2 or more units
5 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
Units5
Floors3
Year built1908
Total area4,360 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1587031
Ownership

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

Owner name
Nicholas A Kaskanlian 2006
Mailing address
1813 Hillman Ave Belmont CA 94002
Last sale
051705

Landlord portfolio

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

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Augrented Insights
Initial analysis

The 5-unit apartment building at 638 45th Avenue in the Outer Richmond district, built in 1908 and owned by Nicholas A Kaskanlian since 2006, has experienced several significant maintenance and compliance issues over its recent history. Most notably, there is an active concern from 2016 regarding foundation damage and cracking reportedly caused by construction at a neighboring property (634 45th Avenue), which remains unresolved as of this date. The building has undergone multiple renovations, with the most recent substantial work completed in 2022 including a $22,000 kitchen and bathroom remodel in Apartment 1, which was initiated to comply with a notice of violation. Prior to this, the property had several significant violations in 2000 that were eventually abated, including issues with mold/mildew, water damage, damaged walls, and various building code violations.

The building has faced recurring maintenance challenges over the years, including stucco repair work in 2017 and 2021, and various plumbing and electrical updates. Several complaints about garbage management, including issues with containers being left out and attracting pests, were filed between 2010 and 2019. More recent complaints in 2022-2023 have focused on sidewalk blocking and garbage disposal issues. The property underwent routine housing inspections in 2002 and 2006, with violations being documented and subsequently addressed. Recent maintenance activity shows ongoing attention to building upkeep, though several historical issues, such as the unresolved foundation concerns, remain notable. The building's permit history shows regular maintenance and improvement work, though there have been instances of unpermitted work that resulted in complaints, such as the 2021 incident involving unauthorized construction work.

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

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Risk rating

How 638 45Th 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
21th percentile

Out of 1040 buildings in this neighborhood, 822 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
71%
No DBI
violation
29%
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.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Building age

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

12-Month severity forecast
No violation 46.1%
Moderate concern 35.5%
Severe concern 18.4%
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

638 45Th Ave event timeline

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

2026
311 Request Mar 05
Garbage and debris
other bagged boxed contained garbage
311 RequestFeb 24
Garbage and debris

See all 12 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 638 45Th 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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