Last verified: August 22, 2026. By Will Tygart. Magnet hub: every tool feeds at least two pillars.
Open a calculator or a checklist, then climb into the pillar that owns the decision. These are not official DOB tools.
Calculators
LL97 penalty calculator ($268/tCO2e)
Applies published emissions factors and the $268 per metric ton overage rate so you can see order-of-magnitude exposure for 2024–2029 vs tighter 2030 factors. Not a substitute for an RDP.
Non-filing penalty estimator
Working $0.50 per sq ft per month pattern for failure to file — often worse than overage math on a stalled report. Confirm Code/DOB application with counsel.
Calendars
2026–2030 NYC building compliance calendar — LL97 windows, extension logic, energy-grade posting, related stack dates. Also: the stack as one calendar and the June 30 / extension deep dive.
Checklists and templates
| Tool | Best for |
|---|---|
| Board resolution checklist (LL97) | Co-op / condo boards |
| Article 320 vs 321 decision tree | Boards choosing a pathway |
| Good-faith stack when over cap | Operators already over |
| Vendor ESG due diligence checklist | PMs |
| Filing sequence (DOB NOW / ESPM / BEAM) | Operators in season |
| Lender / investor evidence pack | Finance door |
| Mid-market disclosure templates | Board / investor packs |
Sister-site tools
BIA assessment generator → continuityhub.org when the job is pure BIA methodology.
Related hubs: NYC compliance · Business continuity · Green finance.