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221 Joost Ave

Sunnyside, SF 94131 6770002 2 units · 2 fl · 1923

Nothing on record for this building in the last seven years, and our model puts it at a low risk of maintenance problems over the next 12 months. No public enforcement record to go on. Walk the building, ask the current tenants how repairs get handled, and get any promises in writing.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Sunnyside — not a forecast
At or below average
avg 1.9
0
FewerMore

This building has 0 novs (7y), at or below the Sunnyside average of 1.9.

Rent & eviction protection

Is 221 Joost 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 1923
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH1
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 1923
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
Units2
Floors2
Year built1923
Total area2,410 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6770002
Ownership

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

Mailing address
Wilma G Mobbs, Trustee 221 Joost Ave San Francisco CA 94131
Last sale

Landlord portfolio

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

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Augrented Insights
Initial analysis

The property at 221 Joost Ave in Sunnyside is a two-unit, two-story multi-family residential building constructed in 1923, currently owned by the Wilma G Mobbs Trust 2004. The building has undergone several significant maintenance and improvement projects over the past three decades, including three roof replacements (most recently in 2015 costing $10,500), multiple vinyl window installations, bathroom renovations in the early 1990s, and important structural work in 1989 that included foundation bolting and dry rot repairs. The building's maintenance history shows regular attention to infrastructure upkeep, with records of sidewalk repairs and residential improvements properly documented through building permits.

Recent history of the property from early 2024 through January 2025 shows considerable attention to parking-related issues in the immediate vicinity, with multiple complaints about sidewalk parking, driveway blocking, and abandoned vehicles. While these incidents were primarily street-related concerns rather than building-specific issues, they may impact resident experience through reduced street access. The most recent building-related incident occurred in March 2024 involving street cleaning, which was promptly resolved. The property's maintenance record suggests ongoing upkeep of the building itself, with no major structural or safety concerns reported in recent years.

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

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Risk rating

How 221 Joost 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

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
67thpercentile

Out of 129 buildings in this neighborhood, 43 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
77%
No DBI
violation
23%
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.

Building age

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

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

12-Month risk forecast
Low failure risk 23%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

221 Joost Ave apartment reviews

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On the map

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The story over time

221 Joost Ave event timeline

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

2026
311 Request Jan 06
Parking on sidewalk
Parking Enforcement

See all 3 events

Full history back to 2025 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 221 Joost Ave apartments

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

Side by side

How 221 Joost Ave 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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