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830 Post St

Downtown, SF 94109 0300003D 16 units · 4 fl · 1917

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
18
FewerMore

This building has 18 novs (7y), above the Downtown average of 6.9.

This building's 78% risk is high in absolute terms; it still rates lower-risk here because buildings in Downtown generally score worse. The colour is relative to the neighborhood, the percentage is not.

The bar and the rating point different ways because they measure different things: the bar counts DBI violations already on file, the rating forecasts the next 12 months.

Rent & eviction protection

Is 830 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 1917
2 or more units
16 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 1917
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
Units16
Floors4
Year built1917
Total area8,348 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0300003D
Ownership

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

Owner name
Mailing address
Hawthorne Stone 1704 Union St San Francisco CA 94123
Last sale
April 12, 1994

Landlord portfolio

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

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Augrented Insights
Initial analysis

The four-story multi-family residential building at 830 Post Street, owned by Deborah R. Decomo, was constructed in 1917 and contains 16 units. The property has undergone several significant infrastructure upgrades over the past decade, including a new water service installation with backflow valves for domestic and sprinkler systems in 2011, and a new sewer line installation. However, the building has experienced recurring maintenance and safety issues, particularly in recent years. Most notably, there are open fire safety violations regarding sleeping area requirements as of November 2023, and a recently issued violation in July 2024 concerning standpipe system maintenance. Previous concerns include multiple instances of water-related problems in 2015 (mold issues and weather protection), heating system complaints in 2014, and several lead paint-related violations between 2003-2015.

The building's fire safety record shows regular system maintenance issues, with violations for sprinkler/standpipe systems noted in 2024 and 2017, though some violations were subsequently abated. A notable incident history includes several false alarms, detector malfunctions, and external rubbish fires, but no civilian injuries have been reported from these events. Recent operational concerns are reflected in multiple 311 calls from late 2024 regarding sidewalk cleaning and various maintenance issues, including a 2024 BSM complaint that is currently in progress. While many historical violations from 2015 and earlier have been resolved, the building's more recent issues suggest ongoing maintenance challenges that warrant attention, particularly regarding fire safety systems and habitat conditions.

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

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Risk rating

How 830 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
61stpercentile

Out of 448 buildings in this neighborhood, 175 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
22%
No DBI
violation
78%
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 location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

12-Month risk forecast
High failure risk 78%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

830 Post St apartment reviews

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On the map

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The story over time

830 Post St event timeline

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

2025
Plumbing Permit Jun 26
Work category: 1m; replace 3 feet of 6' boiler flue
Complete
Plumbing PermitMay 19
Work category: 1p; replace domestic boiler in the general location of the boiler removed.

See all 16 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 830 Post St apartments

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

Side by side

How 830 Post St compares to the neighborhood

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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