What Is Local Law 97?
Local Law 97 is NYC's landmark emissions law requiring buildings over 25,000 sq ft to meet greenhouse gas emissions caps. Buildings that exceed these caps face fines of $268 per metric ton of CO2 equivalent over the limit.
Why Windows Matter for LL97
Window replacement is classified as a Phase 3 compliance measure, coordinated with Local Law 11 (FISP — facade inspection) cycles. Upgrading to high-performance windows directly reduces a building's emissions by improving the thermal envelope.
The impact is significant: buildings with single-pane or older double-pane windows can see a 15-25% reduction in heating energy consumption by upgrading to ENERGY STAR certified products.
The Numbers for Building Managers
- •Co-ops and condos will spend 10-25% of annual operating expenses on LL97 upgrades over the next 3-7 years
- •Buildings filing in 2026 must submit emissions reports by May 1, 2026, covering 2025 usage
- •One board decision for window replacement can cover 50-200+ units — a major capital improvement
Pella's Board Approval Package
We've developed a pre-formatted submission kit for co-op and condo boards that includes:
- •Product specification sheets with energy performance data
- •U-factor, SHGC, and projected energy savings in kBtu/sq ft/year format
- •Warranty documentation
- •Sample alteration agreement language
- •Contractor credentials and insurance certificates
This package removes the friction that causes large building deals to stall in the board approval process.
Getting Started
Contact Ravi Punn at (516) 604-5749 or rpunn@pellactny.com to discuss your building's needs. We'll prepare a compliant product recommendation and Board Approval Package specific to your building.