My new energy label is wrong — what do I do?
Object to the EP advisor within 6 weeks. Condition: suspected calculation error or wrong measurements. Second measurement free if advisor errs.
Common NTA 8800 errors: (a) wrong façade/roof/floor Rc-value input; (b) insulation skipped or unweighted; (c) PV install missed; (d) wrong heat-pump capacity. Plan: (1) Request calculation result (XML) from the EP advisor — required per BRL 9500; (2) check input vs your reality (Rc, glazing types, surfaces); (3) submit written objection within 6 weeks; (4) on refusal: complaint to certifying body (KIWA, BREEAM-NL etc.); (5) escalate: Central Energy Expert College + disciplinary college if needed. Pro tip: compare with neighbouring property on woningmarkt.nl or nieuwlabel.nl — abnormal deviation = strong suspicion of error.