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20 Cedar St

Downtown, SF 94109 0693026 27 units · 4 fl · 1914

This building has a higher-than-average number of open problems nearby. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Downtown
At or below average
avg 6.9
6
FewerMore

This building has 6 novs (7y), at or below the Downtown average of 6.9.

Rent & eviction protection

Is 20 Cedar 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 1914
2 or more units
27 units
Property type
Multi-Family Residential
Zoning
RC4
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 1914
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
Units27
Floors4
Year built1914
Total area10,564 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0693026
Ownership

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

Mailing address
Steven C. Thrower 1 Bush St Ste 900 San Francisco CA 94104
Last sale
082218

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.

20 Cedar St, San Francisco, CA 94109
1025 Post St, San Francisco, CA 94109
Augrented Insights
Initial analysis

The 27-unit, 4-story apartment building at 20 Cedar Street (1025 Post Street) was constructed in 1914 and has experienced several significant maintenance and safety issues in recent years. Most notably, there is an ongoing problem with the building's elevator, which has been frequently disabled throughout 2023-2024, creating accessibility challenges for disabled residents. The building has also faced multiple fire alarm system violations in 2023, with three alarms requiring correction between August and November 2023, and a sleeping area requirement violation issued in December 2023.

Recent improvements to the building have focused on individual unit upgrades, with several apartments (Units 21, 22, 26, and 27) undergoing kitchen and bathroom renovations, electrical upgrades, and washer/dryer installations between 2021-2022. The building's infrastructure has seen significant work, including the replacement of multiple water heaters in 2022 and sewer lateral replacement. However, there have been concerning recent violations regarding interior conditions, including issues with damaged ceilings, lead paint notifications, and smoke detector requirements filed in January 2024, all of which were subsequently abated by March 2024. Historical complaints dating back to the late 1990s-2008 indicate recurring issues with basic services such as hot water supply, electrical problems, and ventilation concerns, though many of these older problems appear to have been resolved.

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

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Risk rating

How 20 Cedar 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
47th percentile

Out of 448 buildings in this neighborhood, 237 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
17%
No DBI
violation
83%
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.

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 13.4%
Moderate concern 73.2%
Severe concern 13.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

20 Cedar St apartment reviews

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The story over time

20 Cedar St event timeline

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

2026
DBI Complaint Jul 16
Hot water has not been consistent for 8 months. the water heater is broken. they brought in a giant dehumidifier to heat the unit for 8 days. it was just removed today. there are unsanitary conditions in the garbage area. trash collection is not adequate for the amount of people in the building. the elevator only works intermittently. there are also other issues in the unit that are not up to code.
Housing Inspection Services
311 RequestJul 15
Hot water lack of hot water

See all 36 events

Full history back to 2019 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 20 Cedar 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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