SB 721 Requirements: What California Multifamily Owners Must Know

California Health & Safety Code §17973 — commonly known as SB 721 — requires periodic inspections of Exterior Elevated Elements (EEEs) on apartment buildings with three or more multifamily dwelling units. The first-cycle deadline of January 1, 2026 has passed, so this guide covers the obligations that still apply in 2026, including to buildings that are overdue: which properties and elements are covered, who may inspect, how much of each element type must be sampled, what the report must contain, repair timing, and the recurring cycle.

Who it applies to

§17973 applies to any building with three or more multifamily dwelling units that contains one or more EEEs. The covered elements are load-bearing components — including their associated waterproofing systems — that extend beyond the exterior walls, are designed for human use, are elevated more than six feet above ground level, and rely in substantial part on wood or wood-based products for structural support. In practice that means balconies, decks, stairways, walkways and entry structures. See what an Exterior Elevated Element is under SB 721 for the definition in detail. Condominium associations fall under a separate statute, SB 326 (Civil Code §5551).

Sources: Health & Safety Code §17973 (SB 721) · Civil Code §5551 (SB 326)

Key dates and timelines

• First inspection: was required by January 1, 2026 — overdue buildings must complete it as soon as possible
• Subsequent inspections: required by January 1 every six years thereafter
• Buildings with qualifying permit applications submitted on or after January 1, 2019 follow the separate certificate-of-occupancy timing in §17973(e)
• Immediate safety threats: preventive measures, including preventing occupant access where necessary, immediately; the inspector must deliver that report to the owner and local enforcement agency within 15 days
• Non-emergency repairs: permit application within 120 days of receiving the report, completion within 120 days of permit approval, unless the local enforcement agency grants an extension

Sources: Health & Safety Code §17973 (SB 721)

Who can inspect, and how much must be sampled

§17973 limits the inspection to a licensed architect, a licensed civil or structural engineer, a contractor holding an A, B or C-5 license with at least five years of relevant experience, or a certified building inspector or building official. The inspector must be independent of the contractor performing any repairs identified in the report.

• • At least 15% of each type of Exterior Elevated Element must be inspected — the statutory sample is per element type, not 15% of the building overall, so balconies, walkways and stairs are each sampled separately.
• • The sample must be representative, and the inspection includes visual review plus, where necessary, invasive evaluation to reach concealed load-bearing components and waterproofing.
• • The report must be signed by the inspecting professional. RetroCal is a DBA of Private Builders Inc., a California licensed General Building Contractor (CSLB License #985586); SB 721 inspections are performed and signed by a professional holding one of the credential classes §17973 requires. See our licensing and credentials page and who is qualified to perform an SB 721 inspection.

Sources: Health & Safety Code §17973 (SB 721) · California CSLB

What the report must contain

• • A written, photo-documented report identifying the elements inspected, the current condition of load-bearing components and associated waterproofing, the expected future performance and remaining useful life, and recommended repairs.
• • The report is delivered to the owner and stays with the owner. A local enforcement agency may require the initial report, the final report, or both to be submitted.
• • Where a condition poses an immediate threat to occupant safety, preventive measures — including preventing occupant access where necessary — must be taken immediately, and the inspector must deliver that report to the owner and the local enforcement agency within 15 days.

Reporting and retention

Owners must retain reports for at least two inspection cycles, and provide them to prospective buyers on request. Local enforcement agencies may request copies. For how the report turns into permitted repair work, see the SB 721 report-to-repair timeline.

Sources: Health & Safety Code §17973 (SB 721) · LA Housing Dept — E3-Apartments · LADBS

Already past due?

The obligations above do not lapse because the deadline passed. For how local enforcement, the §17973(i)(2) civil penalty and insurance considerations work once a building is overdue, read what happens if you miss the SB 721 deadline. If a local agency has already contacted you, our overdue SB 721 inspection service covers the inspection, repairs and agency follow-up.