Free SF apartment background check

1633-1639 Washington St

Nob Hill, SF 94109 0620026 9 units · 3 fl · 1907

This building has significantly more problems than most nearby buildings. Renters here report frequent, slow-to-fix problems. Get repair promises in writing and check the unit before signing.

NOVs (7y) vs. neighborhood
Compared to a typical building in Nob Hill
At or below average
avg 2.4
0
FewerMore

This building has 0 novs (7y), at or below the Nob Hill average of 2.4.

Rent & eviction protection

Is 1633-1639 Washington 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 1907
2 or more units
9 units
Property type
Multi-Family Residential
Zoning
RM2
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
Units9
Floors3
Year built1907
Total area10,870 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0620026
Ownership

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

Owner name
Peter I Iskandar Revoc Trus
Mailing address
Peter I Iskandar, Trustee 1835 Grant Ave San Francisco CA 94133
Last sale
090220

Landlord portfolio

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

Unlock complete report
Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

1635 Washington St, San Francisco, CA 94109
1639 Washington St, San Francisco, CA 94109
1637 Washington St, San Francisco, CA 94109
1633 Washington St, San Francisco, CA 94109
Augrented Insights
Initial analysis

The three-story multi-family residential building at 1633-1639 Washington Street in Nob Hill, owned by the Peter I Iskandar Revocable Trust, was constructed in 1907 and contains 6 units. The property has undergone significant recent improvements to its safety systems, including a completed fire alarm system upgrade in August 2023 to comply with current codes, and the installation of low-frequency sounders in sleeping areas. In 2020-2021, substantial renovations were carried out including bathroom remodels, door replacements, and flooring updates in multiple units, along with mechanical upgrades such as new furnaces, water heaters, and an upgraded electrical service to 400A with 10 meters.

The building has a notable history of addressing safety and compliance issues, including a routine inspection in 2011 that identified several violations (now resolved) related to fire safety, seismic bracing, and security requirements. In 2018, there were significant complaints regarding structural issues, including reports of wall and ceiling problems, door operation issues, and concerns about retrofitting practices, though these were marked as not active. The property has also undergone important infrastructure improvements, including the addition of three accessory dwelling units (ADUs) in 2018-2019, with full bathrooms and kitchens installed in each. The building is classified as Tier 4 for soft-story compliance, with work completed and a Certificate of Final Completion (CFC) issued. Recent sidewalk and street cleaning issues, as evidenced by 311 calls, have been promptly addressed by city services.

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

Free account unlocks the full analysis — plus 2× more records across all data categories and the complete landlord portfolio.
Risk rating

How 1633-1639 Washington 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

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
13th percentile

Out of 1125 buildings in this neighborhood, 979 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
21%
No DBI
violation
79%
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.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Building permits (past 7 years)

Number of permits pulled at this address — construction or renovation activity over 7 years.

12-Month severity forecast
No violation 14.1%
Moderate concern 63.7%
Severe concern 22.2%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

1633-1639 Washington St apartment reviews

Real experiences from people who have lived here. Share yours to help other renters decide.

Share your experience — Help other renters by leaving an honest apartment review

Loading reviews…

On the map

Compare nearby alternatives

This building and nearby alternatives, color-coded by risk level. Click any marker to explore.

Buildings nearby
Loading…
The story over time

1633-1639 Washington St event timeline

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

2026
311 Request Jan 22
Public works
bsm complaint

See all 17 events

Full history back to 2020 — violations, complaints, permits, buyouts, and fire incidents.

Unlock complete timeline
Every record we have

Full data for 1633-1639 Washington St apartments

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

Still apartment hunting in SF?

Look up the next apartment before you sign

Search any SF address free — no account needed to see the risk rating.

Simple pricing

Get the complete picture

Every plan unlocks the complete report: all 13 SF datasets, full history, landlord portfolio, and PDF & Excel exports.

Report Bundle

For the buildings you're deciding on right now

$10 one-time

~$3.33 per building. No subscription ever. Each credit unlocks one building's premium report for 30 days.

  • 3 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 3 Reports — $10

Apartment Hunter

For a wide search across many buildings

$39 one-time

30 reports — ~$1.30 each. No subscription ever.

  • 30 full AI-powered reports
  • Download PDF reports
  • Advanced safety analysis
  • Compare multiple buildings
  • Credits never expire until you use them
  • Full public records (200 rows per dataset)
Buy 30 Reports — $39

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

Watch 1633-1639 Washington St
Get alerted the moment a new violation or complaint is filed.