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177 Cook St

Lone Mountain, SF 94118 1088010 2 units · 2 fl · 1941

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 Lone Mountain — not a forecast
At or below average
avg 0.9
0
FewerMore

This building has 0 novs (7y), at or below the Lone Mountain average of 0.9.

Rent & eviction protection

Is 177 Cook 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 1941
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH3
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 1941
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 built1941
Total area2,724 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot1088010
Ownership

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

Mailing address
Ching Ying Ma Wong Trustee 177 Cook St San Francisco CA 94118
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 two-unit residential building at 177 Cook Street in the Lone Mountain neighborhood is a two-story flats and duplex structure built in 1941 and currently owned by Ching Ying Ma Wong Trust. The property has undergone significant recent improvements, with major renovation projects taking place from 2018 through 2024. In 2021, kitchen and bathroom remodels were completed in both units, featuring high-efficiency lighting, new kitchen hoods, and bathroom exhaust fans, with associated electrical and plumbing work costing approximately $30,000. This work followed an earlier permit from 2017 that had expired. The building's electrical system received substantial upgrades, including a 200-amp service installation with two 100-amp subpanels per unit and 50-amp house meter, along with comprehensive rewiring of kitchens, bathrooms, bedrooms, hallways, and garage areas, with permits issued in 2018 and 2021. More recently, in November 2024, both units had their furnaces replaced with new Bryant 80% efficiency gas furnaces, completed successfully.

The property has experienced some maintenance issues in recent years, including a sewage backup incident in December 2017 and a sidewalk defect in April 2018 caused by tree roots. The sidewalk was inspected but ultimately resulted in an administrative closure. While there have been several parking-related complaints near the property (including vehicles parking on sidewalks in 2018 and 2021, and a blocked driveway in 2019), these incidents were typically resolved through enforcement action. The building's infrastructure updates, particularly the comprehensive electrical system overhaul and recent plumbing improvements, suggest that the property has received substantial attention to its basic systems, though some permits have expired and required renewal before completion.

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

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Risk rating

How 177 Cook 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
82ndpercentile

Out of 519 buildings in this neighborhood, 93 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
90%
No DBI
violation
10%
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.

Construction spend, owner's portfolio

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

Estimated permit spend (past 7 years)

Dollar value of permits pulled at this address — large recent spend can signal deferred-maintenance catch-up.

Building permits, owner's portfolio

Permits pulled across all of this owner's buildings over 7 years.

12-Month risk forecast
Low failure risk 10%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

177 Cook St apartment reviews

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On the map

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The story over time

177 Cook St event timeline

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

2025
Building Permit Nov 04
To obtain final inspection for work approved under pa#201706149336 all work is complete
$1 · Complete
Plumbing PermitApr 25
Renewal of permit# pp20220822648 (original scope: two remodel kitchen, and two bathroom remodeling (units#177&179)

See all 7 events

Full history back to 2021 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 177 Cook St apartments

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

Side by side

How 177 Cook St compares to the neighborhood

This building against comparable properties in Lone Mountain. Toggle filters to narrow the peer group.

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

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