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538-540 27Th St

Noe Valley, SF 94131 6581014 3 units · 2 fl · 1979

A handful of records on file over the last seven years, and our model sees a moderate chance of more 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 Noe Valley — not a forecast
Above average
avg 1.2
2
FewerMore

This building has 2 novs (7y), above the Noe Valley average of 1.2.

Rent & eviction protection

Is 538-540 27Th 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 1979
2 or more units
3 units
Property type
Multi-Family Residential
Zoning
RM1
Not rent-controlled. Buildings constructed after 1978 are generally exempt from SF rent increase limits under the Costa-Hawkins Act.

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 1979
Annual rent increase cap
5% + CPI, max 10%
Just-cause eviction
After 12 months
May be covered by AB 1482. The building is old enough for the statewide rent cap (5% + regional CPI, capped at 10% per year) and just-cause protection after 12 months of tenancy.

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
Units3
Floors2
Year built1979
Total area3,090 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot6581014
Ownership

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

Owner name
Mailing address
Martin Jack & Jennifer Sue 440 Yellowstone Dr South San Francisco CA 94080
Last sale

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.

538 27th St, San Francisco, CA 94131
540 27th St, San Francisco, CA 94131
Augrented Insights
Initial analysis

The 538-540 27th Street property in Noe Valley is a two-story, three-unit multi-family residential building constructed in 1979 and owned by the Carp Family Trust. The building has undergone several significant improvements over the past decade, including a completed reroofing project in 2017 costing $11,500, a kitchen remodel in 2014 valued at $19,000, and substantial deck repairs with dry rot remediation in 2014 costing $31,000. More recent improvements include an EV charger installation completed in early 2022, though a subsequent electrical permit for a 240V circuit installation was cancelled later that year. The building has experienced some maintenance issues, notably a water heater replacement in 2017 due to leakage.

The property has a documented history of housing inspections and violations, though most issues have been promptly addressed. In 2019, there was a violation regarding apartment unit identification that was abated within days. Earlier violations from 2002 related to gas meter safety requirements were resolved by February 2003. Routine inspections of common areas have been conducted, with the most recent being in 2019. The property has also experienced some external infrastructure issues, including a collapsed sidewalk that was repaired in June 2023 following the identification of a damaged utility vault cover. Multiple street cleaning issues were reported in July 2019, likely related to construction activities in the area.

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

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Risk rating

How 538-540 27Th 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 1879 buildings in this neighborhood, 1278 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
66%
No DBI
violation
34%
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.

Permit rate, owner's portfolio

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

Notices of Violation, owner's portfolio

DBI NOVs across all buildings this owner is registered on — a signal of systemic maintenance issues across the portfolio.

12-Month risk forecast
Moderate failure risk 34%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months. Model: full_hgb_balanced.
Apartment reviews

538-540 27Th St apartment reviews

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On the map

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The story over time

538-540 27Th St event timeline

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

2022
Electrical Permit Aug 31
Installation of new 240v 50amp circuit with 14-50 receptacle outlet
Cancelled
Electrical PermitJan 11
Standard ev charger installation

See all 5 events

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

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Every record we have

Full data for 538-540 27Th St apartments

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

Side by side

How 538-540 27Th St compares to the neighborhood

This building against comparable properties in Noe Valley. 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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