Two DOB rulemakings now sit on top of each other, and together they tell you where sidewalk sheds are headed in this city: fewer of them, and the ones that stay up have to look and perform differently.

The first is a proposed rule on sidewalk shed designs, posted August 20. The second, posted September 1, covers containment netting — the mesh barrier that catches debris on facade and scaffold work. Both are still in the proposed stage, both trace back to the same push Mayor Mamdani's team has been making publicly to get sheds down faster and make the ones that remain less of an eyesore, which we covered when DOB's broader shed-removal push made news last month.

For a facade contractor or a GC running FISP (Local Law 11) work, containment netting isn't optional — it's how you keep loose material off the sidewalk under a Department of Buildings permit. If the standard for approved netting materials or attachment methods changes, that's a line item in your safety plan and potentially your bond costs, not just a paperwork update.

Here's a for-instance. If you've got a facade job bid already and priced under the old netting spec, and the new rule requires a heavier-rated mesh or different anchor points, that's real money — recalculate before you're mid-job and stuck eating the difference.

Same logic applies to shed design. If DOB's new design rule pushes toward lighter, more transparent shed structures — which is the direction the mayor's office has signaled — your shed erector needs product data on hand before your next installation, not after a stop-work order.

Neither rule has a locked effective date yet. Both are open for public comment, which is your chance to flag cost or scheduling problems before they're baked in. Check the City Record rulemaking site for the comment deadline on each and don't wait until the final text drops to find out your standard shed vendor doesn't stock what's about to be required.