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1251-1253 20Th Ave

Central Sunset, SF 94122 1730010 6 units · 3 fl · 1908

This building has more problems than most buildings in this neighborhood. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Central Sunset
Above average
avg 0.7
6
FewerMore

This building has 6 novs (7y), above the Central Sunset average of 0.7.

Rent & eviction protection

Is 1251-1253 20Th 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 1908
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
RM1
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.

Building characteristics
Units6
Floors3
Year built1908
Total area3,577 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1730010
Ownership

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

Owner name
Wskk Llc
Mailing address
83 Sylvan Dr San Francisco CA 94132
Last sale
092120

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.

1251 20th Ave, San Francisco, CA 94122
1253 20th Ave, San Francisco, CA 94122
Augrented Insights
Initial analysis

The three-unit, two-story multi-family residential building at 1251-1253 20th Avenue in the Central Sunset neighborhood was constructed in 1908 and is currently owned by Wskk Llc. The property has undergone several significant improvements over the years, with the most substantial being a mandatory soft story retrofit completed in 2017 at a cost of $78,000, bringing the building into compliance with SF Building Code Chapter 4D requirements. In 2019, the building received final inspection approval for window installations completed in 2011, which included the installation of two double-pane vinyl windows that meet modern energy efficiency standards. A notable complaint was filed in May 2019 regarding construction safety concerns when a resident's balcony was removed for seismic retrofit work and remained unrepaired for over a week, though this issue appears to have been resolved as the case is marked as not active.

The building has had periodic inspections and maintenance work dating back to 2000, with several violations recorded in February 2000 that were subsequently abated, including issues related to combustible storage, mold, gas utility safety, lighting, and a damaged front passageway door. More recent history shows relatively minor maintenance issues, with the most recent 311 calls involving reports of mold and mildew (November 2024) and garbage and debris (August 2024). The property underwent exterior work in 2001, including remediation of dry rot and interior remodeling, as well as repairs to a detached rear cottage. While there have been routine housing inspections and minor maintenance issues reported over the years, the building's recent history suggests active management and compliance with safety requirements, including the completion of mandatory seismic retrofitting and proper handling of building permits.

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

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Risk rating

How 1251-1253 20Th 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

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
27th percentile

Out of 814 buildings in this neighborhood, 594 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
78%
No DBI
violation
22%
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 age

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

Neighborhood location

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

12-Month severity forecast
No violation 39.2%
Moderate concern 32.4%
Severe concern 28.4%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1251-1253 20Th Ave apartment reviews

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The story over time

1251-1253 20Th Ave event timeline

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

2026
Building Permit Feb 09
Comply w/ complaint # 202649359 & 202649360: install fire smoke alarm, carbon monoxide, & fire extinguisher for all units. leagalize existing floor plan at rear yard unit #1253
$3,000 · Complete
DBI ComplaintJan 29
Date last observed: 28-jan-26; identity of person performing the work: najia cherif; unit: cottage; exact location: in-law unit; building type: residence/dwelling fire safety/fire escape; illegal unit; illegal change of use; other housing; ; additional information: the specific room i occupy has known code and habitability violations. despite this, the master tenant continues to rent and re-rent the space. she is now attempting to remove me from the premises after i rescinded my 30-day notice, while continuing to treat the room as rentable;

See all 11 events

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

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Every record we have

Full data for 1251-1253 20Th Ave 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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