Free SF apartment background check

601-605 Post St

Downtown, SF 94102 0305001 35 units · 6 fl · 1922

This building has a substantial enforcement record over the last seven years, and our model predicts continuing maintenance failures over the next 12 months. Read the records below before you sign. Ask which issues were resolved, get repair commitments in writing, and inspect the unit yourself.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Downtown — not a forecast
Above average
avg 6.9
20
FewerMore

This building has 20 novs (7y), above the Downtown average of 6.9.

Rent & eviction protection

Is 601-605 Post 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 1922
2 or more units
35 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 1922
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
Units35
Floors6
Year built1922
Total area19,410 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0305001
Ownership

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

Owner name
Mailing address
Cynthia Koenigsberg Po Box 590206 San Francisco CA 94159
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.

555 Taylor St, San Francisco, CA 94102
551 Taylor St, San Francisco, CA 94102
605 Post St, San Francisco, CA 94102
601 Post St, San Francisco, CA 94102
Augrented Insights
Initial analysis

The 35-unit, 6-story multi-family residential building at 601-605 Post Street, constructed in 1922, has experienced persistent maintenance challenges in recent years. Most notably, there has been a recurring issue with the building's elevator system, which has been documented as out of service multiple times throughout 2023-2024, causing significant concern for residents, especially those with disabilities. During 2023, there were also reports of power outages affecting individual units, rodent infestation, and sanitation problems related to garbage management. The building underwent substantial electrical system upgrades in 2006, including a service upgrade from 200A to 400A and the replacement of outdated wiring, though recent complaints suggest ongoing electrical system reliability issues.

The property has an extensive history of building modifications and repairs, including significant ADA compliance work in 2007 that involved bathroom renovations and entry improvements. Various building permits indicate regular maintenance activities, though some, such as a 2023 sleeping area requirement violation related to the fire safety systems, remain open. Fire safety inspections have generally shown no civilian injuries from incidents, with most being minor issues such as false alarms, smoke detector activations, and a few cooking-related incidents. Recent 311 calls from January 2025 primarily relate to street-level issues such as graffiti and sidewalk cleanliness, while several complaints about garbage management have been documented. The building's ownership is currently held by 555 Taylor LLC, and much of the recent maintenance history suggests ongoing challenges with building systems and responsiveness to resident concerns, particularly regarding elevator reliability and unit-level service interruptions.

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

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Risk rating

How 601-605 Post 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
8thpercentile

Out of 448 buildings in this neighborhood, 412 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
6%
No DBI
violation
94%
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.

Building size

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

Number of units

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

NOV rate, owner's portfolio

Per-building NOV rate across everything this owner manages — high rates signal pattern neglect.

12-Month risk forecast
High failure risk 94%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

601-605 Post St apartment reviews

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On the map

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The story over time

601-605 Post St event timeline

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

2026
Electrical Permit Jul 21
Replace three outlets , replace one switch , strap conduit
Issued
311 RequestJun 24
Garbage and debris

See all 30 events

Full history back to 2022 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 601-605 Post St apartments

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

Side by side

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