Free SF apartment background check

700 Mason St

Downtown, SF 94108 0273010 9 units · 5 fl · 1911

This building has a higher-than-average number of open problems nearby. 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 Downtown
At or below average
avg 6.9
0
FewerMore

This building has 0 novs (7y), at or below the Downtown average of 6.9.

Rent & eviction protection

Is 700 Mason 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 1911
2 or more units
9 units
Property type
Multi-Family Residential
Zoning
RC4
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
Floors5
Year built1911
Total area9,550 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot0273010
Ownership

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

Owner name
Abuyaghi Properties Llc
Mailing address
854 Ellis St San Francisco CA 94109
Last sale
092419

Landlord portfolio

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

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Augrented Insights
Initial analysis

The five-story, nine-unit multi-family residential building at 700 Mason Street, owned by Abuyaghi Properties LLC, was constructed in 1911 and has undergone various maintenance and compliance efforts over the years. The property has experienced several significant issues between 2011-2013, including multiple housing violations related to plumbing (kitchen sink waste pipe issues), fire safety (fire escape maintenance), and general maintenance concerns. In 2014, important earthquake safety compliance issues arose when the building was noted as part of the mandatory soft story retrofit program, resulting in violation notices for failure to submit required documentation and incur monthly monitoring fees. The building's systems have received multiple upgrades and inspections, including a new steam boiler installation in 2013 and various plumbing repairs between 2011-2015. Recent activity includes a 2023 complaint about early morning construction work in the rear yard area, though this issue is currently listed as not active.

The building's fire safety systems have undergone regular inspections, with violations noted in 2011 for combustible storage in exit paths and electrical concerns, though these were subsequently corrected. Fire-related incidents recorded at the address appear to be primarily for service calls and assistance, with no civilian injuries reported. More recent 311 calls from January 2025 primarily relate to street and sidewalk cleaning issues, including reports of garbage and debris, while older records from 2014-2015 show concerns about boiler permit renewals and a possible illegal basement unit that were resolved. The building's maintenance history indicates ongoing compliance efforts, with most violations being addressed and closed, though some historical permits from the 1980s and 1998 for parapet bracing and various structural improvements have expired.

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

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Risk rating

How 700 Mason 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
36th percentile

Out of 448 buildings in this neighborhood, 287 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
11%
No DBI
violation
89%
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 size

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

DBI tenant complaints (past 7 years)

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

12-Month severity forecast
No violation 11.2%
Moderate concern 78.2%
Severe concern 10.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

700 Mason St apartment reviews

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The story over time

700 Mason St event timeline

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

2026
311 Request Jun 17
Other illegal parking
Parking Enforcement
311 RequestJun 08
311 service request

See all 10 events

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

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Every record we have

Full data for 700 Mason St 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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