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418-420 Union St

Telegraph Hill, SF 94133 0104011 4 units · 2 fl · 1906

A handful of records on file over the last seven years, and our model puts this building at a low risk of further maintenance problems in the next 12 months. A few records worth reading before you sign. Check whether they were closed out, and ask what was actually fixed.

NOVs (7y) vs. neighborhood
Records already on file, against a typical building in Telegraph Hill — not a forecast
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Telegraph Hill average of 1.2.

Rent & eviction protection

Is 418-420 Union 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 1906
2 or more units
4 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 1906
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
Units4
Floors2
Year built1906
Total area3,559 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0104011
Ownership

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

Owner name
Mailing address
511 Rollins Rd Burlingame CA 94010
Last sale
July 31, 2019

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.

418 Union St, San Francisco, CA 94133
420 Union St, San Francisco, CA 94133
Augrented Insights
Initial analysis

The property at 418-420 Union Street is a two-story multi-family residential building in Telegraph Hill, comprising 4 units and owned by Nasser Landis. Built in 1906, the building has undergone significant renovations and improvements over the past few years. Most notably, in 2023-2024, there have been substantial structural and safety improvements including the replacement of a brick retaining wall with reinforced concrete, deck framing repairs, and HVAC upgrades (costing $30,000). Earlier in 2023, the building received a new roof (costing $18,400) and underwent a comprehensive kitchen and bathroom remodel (costing $100,147). A major transformation occurred in 2022 with the conversion of a commercial retail space into a residential ADU and significant remodeling of Unit 418B ($121,370), including window replacements and HVAC equipment relocation.

The building has a history of maintenance and safety compliance issues, particularly between 2001-2012. There were several building code violations and complaints regarding unpermitted construction work, including unauthorized apartment remodels and bathroom modifications in 2001 and 2012. Fire safety concerns were raised in 2006, and a gas leak incident was recorded (date not specified) with no civilian injuries. However, these issues appear to have been resolved, with all relevant violations marked as "Not Active" and multiple recent permits indicating ongoing investment in building maintenance and improvements. Recent plumbing and electrical work (completed in October 2023) involved extensive updates to Unit 418B, including new wiring and plumbing for kitchen, bathroom, and laundry facilities, suggesting a significant upgrade to building infrastructure and resident amenities.

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

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Risk rating

How 418-420 Union 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
32ndpercentile

Out of 684 buildings in this neighborhood, 465 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
79%
No DBI
violation
21%
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.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

DBI complaints, owner's portfolio

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

12-Month risk forecast
Low failure risk 21%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

418-420 Union St apartment reviews

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On the map

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The story over time

418-420 Union St event timeline

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

2025
311 Request Nov 25
Other illegal parking
Parking Enforcement
311 RequestNov 25
Abandoned vehicle

See all 22 events

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

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Every record we have

Full data for 418-420 Union St apartments

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

Side by side

How 418-420 Union St compares to the neighborhood

This building against comparable properties in Telegraph Hill. 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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