Last verified: August 22, 2026. By Will Tygart. For owners and managers under LL97 deadline or penalty pressure. Not legal advice.
Do these five in order. Do not start with a plant replacement meeting.
The five steps
Step 1 — Quantify overage risk
LL97 penalty calculator ($268/t). Save the output.
Step 2 — Check the filing clock
June 30, 2026 deadline / extension · DOB NOW, ESPM, BEAM. Know whether you file, extend, or are already late. 2026: May 1 due, grace through June 30, $60 extension through August 29 if you actually apply.
Step 3 — Price the cost of not filing
Non-filing penalty estimator. Compare monthly non-filing burn to the cost of an RDP this week.
Step 4 — See the whole stack year
2026–2030 calendar · LL84 / LL88 / LL97 / LL33 stack.
Step 5 — Stabilize the next 24 months
2030 scenarios → good faith when over cap → LL97 ↔ BC and insurance → NYC hub.
One-week action card
| Day | Action |
|---|---|
| 1 | Calculator + non-filing estimate for each BIN |
| 2 | Confirm portal access + BBL/BIN list |
| 3 | RDP availability / engagement letter |
| 4 | Extension vs file decision minuted |
| 5 | Data pull plan (utilities) |
| 6 | Board / owner update — resolution checklist |
| 7 | Calendar holds through August 29 if extended |
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