tenant in los angeles ca served 30-day notice claiming black mold under sb 655 - how to inspect and remediate under lahd rules?

Question

landlord managing a 6-unit apartment building in los angeles (silver lake). a tenant just served us a written notice alleging 'toxic black mold inside the master bathroom wall cavity' under California Senate Bill 655 and threatens to withhold rent next month.

the tenant filed a complaint with the Los Angeles Housing Department (LAHD).

what is the legal timeframe under California Health & Safety Code 26100 to remediate, and what documentation is required by LAHD to clear the housing violation before rent withholding begins?

Antonio · Accepted Answer

Direct Answer:  Under California SB 655 (Health & Safety Code § 17920.3) and LAHD guidelines, landlords must respond within  48 to 72 hours  and complete certified remediation within a reasonable timeframe (typically under 14 to 30 days depending on severity). To fully extinguish legal liability and prevent lawful rent withholding, you must: (1) commission an independent Indoor Environmental Professional (IEP) assessment, (2) perform ANSI/IICRC S520 negative-air remediation, and (3) submit a passing Post-Remediation Verification (PRV) lab certificate directly to LAHD code enforcement. 
 Under California Civil Code § 1941.1, unmitigated fungal growth exceeding 10.0 sq. ft. breaches the implied warranty of habitability. If landlords use uncertified handymen or spray bleach, LAHD inspectors issue formal substandard housing citations that bar landlords from collecting rent or issuing eviction notices. 
 The 4-step LAHD compliance protocol: 
 
    Step 1: Emergency Inspection:  Thermal imaging and cavity air sampling to establish baseline spore concentrations. 
    Step 2: Negative Pressure Containment (-5 Pa):  Seal bathroom with 6-mil poly airlocks and HEPA scrubbers to isolate spores. 
    Step 3: Moisture Source Elimination:  Repair concealed plumbing supply leaks and replace damp drywall with mold-resistant board. 
    Step 4: PRV Lab Clearance & LAHD Submission:  Independent IEP pulls clearance air cassettes and uploads certificate to the LAHD case officer. 
 
 Call our Southern California emergency dispatch unit at  (855) 215-6261  for immediate LAHD clearance.

amanda_s_escrow · Answer

As an escrow and property specialist in SoCal: LAHD does not mess around with SB 655 complaints. If the PRV lab clearance is uploaded before the LAHD inspector's site visit, the inspector closes the case file without assessing administrative fees.

stephanie_l_va · Answer

Make sure you send written notice to the tenant confirming the specialist's arrival date within 48 hours to preserve your statutory compliance record under California law.

michael_b_ny · Answer

Update:  Had the certified crew out yesterday. Found a pinhole leak in the shower diverter valve. Contained the bathroom and stripped the drywall cleanly.

Antonio · Answer

Great progress Michael. Ensure the independent IEP pulls an outdoor baseline sample at the same time as the indoor test to establish IICRC Condition 1 statistical clearance for LAHD.

brian_t_gc · Answer

Always replace that shower backing with cement board (HardieBacker) and waterproof membrane. Regular drywall behind tile in LA rentals is a ticking time bomb.

michael_b_ny · Answer

Final Update:  PRV lab report was spotless! Uploaded to the LAHD portal this morning and the inspector closed the defect notice in 3 hours. Tenant paid rent in full today!

tenant in los angeles ca served 30-day notice claiming black mold under sb 655 - how to inspect and remediate under lahd rules?

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