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1148-1150 Masonic Ave

Haight Ashbury, SF 94117 1233023 2 units · 4 fl · 1900

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 Haight Ashbury — not a forecast
At or below average
avg 1.7
0
FewerMore

This building has 0 novs (7y), at or below the Haight Ashbury average of 1.7.

Rent & eviction protection

Is 1148-1150 Masonic Ave 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 1900
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 1900
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
Floors4
Year built1900
Total area5,170 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1233023
Ownership

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

Mailing address
Wai John E Trustee Po Box 641045 San Francisco CA 94164
Last sale
August 24, 2012

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.

1150 Masonic Ave, San Francisco, CA 94117
1148 Masonic Ave, San Francisco, CA 94117
Augrented Insights
Initial analysis

The property at 1148-1150 Masonic Avenue is a 4-story, 2-unit multi-family residential building located in the Haight Ashbury neighborhood, owned by the John E Wai 1981 Living Trust and dating back to 1900. The building underwent significant renovations during 2012-2013, including a comprehensive interior remodel costing $600,000 that added multiple bedrooms and bathrooms across all floors, converted the attic into living spaces, and involved voluntary structural strengthening. Major improvements included the installation of a complete NFPA-13 fire sprinkler system throughout the building, garage, and attic (with 101 heads), window replacements, and upgrades to electrical systems.

More recent history shows recurring maintenance issues, particularly concerning water systems, with multiple complaints in 2023 regarding lack of hot water (February and June) and a significant sewer lateral replacement in 2019. The building faced several housing code violations in early 2019, including water damage, mold, and lead paint concerns, though these were abated by March 2019. A 2016 fire complaint regarding blocked exits was also resolved. Infrastructure upgrades during 2012-2013 included new furnaces, water heaters, and comprehensive plumbing work. The property has experienced periodic issues with building cleanliness and maintenance, as evidenced by 311 calls, particularly relating to human/animal waste on nearby sidewalks in recent years. While most historical violations and complaints have been resolved, the pattern of recurring hot water issues and more recent complaints about diminished livability (July 2023) suggest ongoing maintenance challenges.

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

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Risk rating

How 1148-1150 Masonic Ave'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
66thpercentile

Out of 581 buildings in this neighborhood, 198 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
74%
No DBI
violation
26%
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.

DBI tenant complaints (past 7 years)

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

DBI complaint rate, owner's portfolio

Per-building complaint rate across the owner's portfolio.

DBI complaints, owner's portfolio

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

12-Month risk forecast
Low failure risk 26%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

1148-1150 Masonic Ave apartment reviews

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On the map

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The story over time

1148-1150 Masonic Ave event timeline

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

2026
DBI Complaint Jul 20
Building where customer resides, has reoccurring issue with sewage backflow, every time it happens, they send plumber they snake it out, but issue not resolved happens every month - brown water / sewage smelly water comes into bathroom, garage, - would like to be contacted by inspector when in the area of of the results
Housing Inspection Services

See all 13 events

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

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Every record we have

Full data for 1148-1150 Masonic Ave apartments

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

Side by side

How 1148-1150 Masonic Ave compares to the neighborhood

This building against comparable properties in Haight Ashbury. 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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