What is an SB 721 balcony inspection, and what did AB 2579 change?

What the law covers

SB 721 applies to buildings with three or more multifamily dwelling units and targets exterior elevated elements: balconies, decks, porches, stairways, walkways and their railings that are more than six feet above ground level and rely in whole or substantial part on wood or wood-based products for structural support. The inspection must evaluate load-bearing components and their associated waterproofing.

The deadline

The original SB 721 deadline was January 1, 2025. AB 2579, signed in 2024, extended the first-inspection deadline to January 1, 2026, and preserved the six-year re-inspection cycle. Buildings that had already been inspected under a local ordinance or as part of permitted repair work may be credited; check your jurisdiction. Condominiums are governed by SB 326 through the Davis-Stirling Act, on a nine-year cycle, and are handled separately from SB 721 rental housing.

Who may perform it

SB 721 requires a licensed architect, licensed civil or structural engineer, a contractor holding an A, B or C-5 license with specified experience, or a certified building inspector or official. The inspector must be independent of any contractor who will perform the repairs, which is why owners should not accept a "free inspection" from the company hoping to sell the reconstruction.

What happens if the inspection finds a problem

• Immediate threat to safety - the inspector must notify the owner and the local enforcement agency within 15 days, and the owner must apply for a permit within 30 days and complete repairs within 120 days of permit issuance, with extensions available for good cause.
• Not an immediate threat - repairs are required within 180 days.
• Non-compliance - local agencies may assess civil penalties, and unabated conditions can lead to a building safety lien.

What it costs

Fees scale with the number of elements. A small property with a handful of balconies is commonly $1,000-$2,500; a large complex with dozens of elements is priced per element, often $75-$200 each, with sampling and destructive testing where waterproofing condition cannot be judged visually. Budget separately for repairs, which is where the real exposure lives on 1970s and 1980s wood-frame properties.

Practical advice for owners

Do not wait for a complaint. Insurance carriers now ask for SB 721 compliance at renewal, lenders ask for it at refinance, and buyers ask for it in diligence. If you are acquiring wood-frame multifamily in Southern California, treat the balcony report as a standard diligence item alongside the roof, and price the repair exposure before you remove your contingency.