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ISDE subsidy refused — what do I do?

DIRECT ANSWER

Object to RVO within 6 weeks. Success rate on administrative error: 60-80%. 5 typical refusal grounds + defense.

Reviewed by FFCheck-redactie · Last reviewed 2026-05-28

5 typical ISDE refusals + defense:

  1. "Application late"24-month window from invoicing; count exactly and object if within window
  2. "Installer not certified"show BRL certificate or installer mark; if missing: have installer get certification
  3. "Measure not on subsidy list"compare specs with RVO product list
  4. "Insulation under min Rc"show installer declaration + re-measurement
  5. "Payment not traceable"attach bank statement (no cash). Plan: written objection within 6 weeks of refusal to RVO; include name, file number, grounds, signature. On continued refusal: appeal to Cbb (Trade and Industry Appeals Court, €366 court fee 2026). Housing associations + HOAs: special ISDE coupon procedure.

Related

What is ISDE subsidyISDE subsidy: €30-€8,000 per measure (insulation, heat pump, solar boiler). Apply within 24 months of completion. We explain conditions + mo…What is the WarmtefondsBorrow up to €69,000 for insulation + heat pump at 0% (low income) or 2-4% (other). Online application, decision in 6 weeks.Insulation installer did bad workBW 7:750 + 7:759 (works contract): right to repair or replacement. Building Code + ISDE minimum requirements as leverage. €19 letter.

Sources

Updated: 2026-05-28

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