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110-116 Frederick St

Haight Ashbury, SF 94117 1255019 40 units · 4 fl · 1909

This building has far more open problems than almost any other in the neighborhood. 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 Haight Ashbury
Above average
avg 1.8
3
FewerMore

This building has 3 novs (7y), above the Haight Ashbury average of 1.8.

Rent & eviction protection

Is 110-116 Frederick 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 1909
2 or more units
40 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.

Building characteristics
Units40
Floors4
Year built1909
Total area35,580 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1255019
Ownership

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

Owner name
Mulberry Tree Lp
Mailing address
Morse Frederick A P O Box 13285 Oakland CA 94661
Last sale
030121

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.

116 Frederick St, San Francisco, CA 94117
110 Frederick St, San Francisco, CA 94117
114 Frederick St, San Francisco, CA 94117
112 Frederick St, San Francisco, CA 94117
Augrented Insights
Initial analysis

The 40-unit apartment building at 110-116 Frederick Street, owned by Mulberry Tree LP, is a 4-story multi-family residential structure built in 1909 in the Haight Ashbury neighborhood. The property underwent significant improvements in recent years, including the installation of a new fire alarm system with sprinkler monitoring in 2021 costing $90,506, and the addition of five new ADUs (Accessory Dwelling Units) in 2020 per San Francisco Ordinance 162-16, which included complete electrical and plumbing upgrades for each unit. The building successfully completed its mandatory Tier 3 soft-story seismic retrofit program, though it initially faced violations for non-compliance in late 2017, which were resolved by January 2018.

The property has experienced various maintenance and safety issues, particularly in 2019 and 2020, including complaints about common area fire escape locks, a non-functional buzzer system, and concerns about structural cracks during ADU construction. There were also periods of significant work requiring temporary utility shutoffs in October 2019, which generated tenant complaints. Recent fire safety inspections in 2023-2024 have noted some recurring issues with alarm systems and a sleeping area requirement violation as of November 2023, though these have typically been resolved promptly. The building's infrastructure improvements include several plumbing upgrades between 2013-2021, such as sewer line replacements and new heat pump installations. While the building has had multiple fire alarm activations and system malfunctions recorded between 2006 and 2024, there have been no reported civilian injuries.

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

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Risk rating

How 110-116 Frederick 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
0th percentile

Out of 581 buildings in this neighborhood, 581 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 6.4%
Moderate concern 80.5%
Severe concern 13.1%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

110-116 Frederick St event timeline

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

2025
Fire Complaint Jun 20
Sprinkler/Standpipe Systems
No Merit
Fire ComplaintJun 20
Exit Maintenance

See all 28 events

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

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Every record we have

Full data for 110-116 Frederick 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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