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310-312 Day St

Noe Valley, SF 94131 6631005 2 units · 2 fl · 1924

This building has a higher-than-average number of open problems nearby. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Noe Valley
At or below average
avg 1.2
0
FewerMore

This building has 0 novs (7y), at or below the Noe Valley average of 1.2.

Rent & eviction protection

Is 310-312 Day 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 1924
2 or more units
2 units
Property type
Multi-Family Residential
Zoning
RH2
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
Units2
Floors2
Year built1924
Total area2,750 sq ft
Property typeMulti-Family Residential
Tax statusHome Owners
Blocklot6631005
Ownership

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

Owner name
Lee Hee Ja
Mailing address
312 Day St San Francisco CA 94131
Last sale
052506

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.

310 Day St, San Francisco, CA 94131
312 Day St, San Francisco, CA 94131
Augrented Insights
Initial analysis

The two-unit residential building at 310-312 Day Street in Noe Valley is a two-story flats and duplex structure built in 1924, currently owned by Hee Ja Lee. This property has undergone several significant improvements over the years, with the most recent permit issued in December 2024 for substantial exterior work including concrete repair, door replacement, fencing, siding repairs, and landscaping, with a reported cost of $16,000. Additionally, as of January 2025, the building is scheduled to receive new HVAC installations, specifically two heat pumps and air handlers, as part of an energy-efficient upgrade. Earlier improvements include interior renovations from 2005 (including hardwood floor refinishing, rear steps repair, and cabinet updates), though these are relatively dated compared to recent work.

Of particular note is a concerning pattern of parking-related incidents in the vicinity, with multiple reports of blocked driveways filed between November 2023 and December 2024. There have been at least nine documented cases of parking violations, with several resulting in citations, including a significant cluster of incidents in September and October 2024. While these parking issues don't directly affect the building's structural integrity or safety, they may indicate challenges with street parking management in the area.

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

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Risk rating

How 310-312 Day 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
83th percentile

Out of 1879 buildings in this neighborhood, 319 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
88%
No DBI
violation
12%
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.

Neighborhood location

Precise location is a proxy for neighborhood-level risk — some SF blocks have systematically higher DBI activity.

Building permits, owner's portfolio

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

Construction spend, owner's portfolio

Estimated permit value across all of this owner's buildings.

12-Month severity forecast
No violation 86.5%
Moderate concern 8.9%
Severe concern 4.6%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

310-312 Day St event timeline

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

2025
Plumbing Permit Jan 07
Work category: 1m; ina tall 2 heat pumps and 2 wall mounted air handlers. line sets, condensation drain connections, communication lines and thermostat controls.
Expired

See all 2 events

Full history back to 2024 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 310-312 Day St apartments

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

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