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4735 Mission St

Excelsior, SF 94112 6084024C 3 units · 3 fl · 2003

This building has far more open problems than almost any other in the neighborhood. A handful of unresolved issues. Worth a careful walk-through and pointed questions.

NOVs (7y) vs. neighborhood
Compared to a typical building in Excelsior
Above average
avg 1.4
13
FewerMore

This building has 13 novs (7y), above the Excelsior average of 1.4.

Rent & eviction protection

Is 4735 Mission 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 2003
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
NC3
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.

Building characteristics
Units3
Floors3
Year built2003
Total area4,928 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6084024C
Ownership

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

Owner name
Chen Yun & Jian Yan
Mailing address
155 Canyon Dr Portola Valley CA 94028
Last sale
011013

Landlord portfolio

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

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Augrented Insights
Initial analysis

The three-story mixed-use building at 4735 Mission Street, constructed in 2003, comprises two residential units above a ground-floor commercial space, with ownership registered under Chen Yun & Jian Yan. The building's construction was completed following a significant February 2001 permit for adding two stories to the existing single-story commercial structure, valued at $450,000, which was supported by electrical upgrades including a 3-phase 400-amp underground service installation with four meters in January 2003. Since its completion, the property has undergone several maintenance and modification works, including a $22,000 reroofing project in December 2018.

Recent concerns regarding resident safety have emerged, particularly in mid-2024, with an open investigation into blocked common area exits that resulted in fire violations for storage in pathways and blocked roof exit access, though these violations were subsequently abated. The building has experienced recurring maintenance issues, including a sewage backup in October 2023 and multiple reports of general cleaning needs on the surrounding property. Vandalism has been a concern, with multiple graffiti incidents reported on or near the building in 2024. The property's history includes several early 1990s commercial modifications, including kitchen hood installations and partition wall alterations, before its conversion to its current configuration. The building has undergone fire safety inspections and modifications over the years, with records indicating the installation of a fire system in the kitchen hood in 1994 and various fire safety improvements throughout its history.

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

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Risk rating

How 4735 Mission 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
9th percentile

Out of 337 buildings in this neighborhood, 307 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
43%
No DBI
violation
57%
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.

Property class: apartment building

Apartment building — this property classification influences expected violation rates.

Building size

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

12-Month severity forecast
No violation 36.1%
Moderate concern 37.5%
Severe concern 26.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

4735 Mission St apartment reviews

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The story over time

4735 Mission St event timeline

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

2026
311 Request Apr 23
Garbage and debris
furniture
311 RequestMar 23
Public works

See all 17 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 4735 Mission St 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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