SB 326 & SB 721 Balcony Inspections in San Francisco
California law requires inspection of wood-framed balconies, decks, and elevated walkways on multifamily buildings, and both initial statutory deadlines have now passed. If your San Francisco building hasn't completed its inspection, you're past due, and we can help you get compliant.
- Scope
- Elevated-Element Inspections by a Licensed PE
- License
- Licensed CA PE
- Quote
- Free, within 24 hrs
- Delivery
- 2–3 week plan sets
What we handle
San Francisco is a hard city on wood balconies. Marine air, persistent fog, and wind-driven moisture work into railings, deck framing, and the concealed cantilevered joists that hold these elements up, and rot does its damage out of sight. That's exactly what the state's balcony laws target: SB 326 for condominium and HOA buildings, SB 721 for apartment buildings with three or more units. Both require a qualified professional to inspect a sample of elevated exterior elements, assess the concealed load-bearing wood, and report on their condition. Oaktown Engineers performs these inspections with a licensed California PE, delivers the statutory report, and, when repairs are needed, engineers the fix and prepares documentation suitable for San Francisco Department of Building Inspection permit submittals.
- SB 326 Inspections (Condo / HOA Buildings)
- SB 721 Inspections (Apartment Buildings, 3+ Units)
- Balcony, Deck & Elevated Walkway Assessment
- Exterior Stair & Landing Inspection
- Concealed Framing & Waterproofing Evaluation
- Statutory Compliance Reports
- Repair Recommendations & Prioritization
- Repair Design & Engineering
- SF DBI Permit Documentation
- Re-Inspection Cycle Planning
How the work runs
What Are the SB 326 and SB 721 Deadlines, and Have They Passed?
Yes, both initial deadlines have passed. SB 326 (Civil Code Section 5551) required condominium and HOA buildings to complete their first elevated-element inspection by January 1, 2025, with re-inspection at least every nine years. SB 721 (Health & Safety Code Section 17973) applies to apartment buildings with three or more units; its deadline was extended to January 1, 2026 by AB 2579, with re-inspection every six years. If your San Francisco building hasn't completed its initial inspection, you are out of compliance now. The practical move is to schedule it promptly rather than wait for an enforcement letter or a sale to force the issue.
Why Do San Francisco Balconies Fail?
Moisture. San Francisco's marine climate keeps exterior wood damp for much of the year, and fog-side exposures in the Sunset, Richmond, and along the waterfront rarely dry out fully. Water that gets past deck coatings or flashing reaches the structural framing (often cantilevered joists sealed inside a soffit), and rot progresses invisibly until the framing has lost real capacity. The statutory inspections exist precisely because these are concealed, load-bearing elements over walkways and open space. An inspection finds the deterioration while it's still a repair, not a failure.
What Happens After the Inspection?
You receive a written report from a licensed PE identifying the condition of the elements inspected. If everything is sound, the report is your compliance record until the next cycle: nine years for SB 326, six for SB 721. If we find deterioration, the report classifies its urgency, and immediate hazards must be addressed per the statutes. We can then engineer the repairs (framing replacement, connection upgrades, waterproofing details) and prepare the drawings for a San Francisco DBI permit, so you work with one firm from finding to fix.
Service area
- San Francisco
- Daly City
- South San Francisco
- Oakland
- Alameda
- San Mateo
Questions we hear
Our San Francisco HOA missed the SB 326 deadline. What should we do?
Schedule the inspection now. The statute's deadline has passed, but completing the inspection promptly puts the association back on a defensible footing, documents that the board acted on its maintenance duties, and starts the nine-year re-inspection clock. We inspect the statutory sample of elevated elements, deliver the PE report, and flag anything needing repair with clear priorities the board can act on.
Does SB 721 apply to my San Francisco apartment building?
It applies if your building has three or more dwelling units and elevated exterior elements (balconies, decks, stairs, or walkways) that extend beyond the exterior wall, rely on wood or wood-based products for structural support, and stand more than six feet above grade. The extended initial deadline of January 1, 2026 has passed, so an uninspected building is past due. If you're unsure whether your elements qualify, send us photos and we'll tell you.
Will the inspection damage our building?
Minimally, if at all. Where framing is concealed, the laws allow assessment by methods ranging from moisture meters and borescope probes through small access openings to limited exploratory openings where conditions warrant. We use the least invasive method that gives a reliable answer, and any openings are small and patchable. If we do find compromised framing, documenting it is the point. That's the repair the inspection exists to catch.
Send the drawings. We'll take it from there.
Plans, photos, or a plain description of the problem. A licensed CA PE reviews it and returns a free quote within 24 business hours.