How to Reduce Cadastral Value and Recover Overpaid IBI in Spain

IBI is an annual property tax. If your cadastral value exceeds market value, you are overpaying.

Key facts and steps

Compare cadastral value with market value on portalinmobiliario.com or idealista. If the excess exceeds 15%, it is worth challenging.

Process

1. Independent valuation report
2. Application to the Gerència del Cadastre
3. Solicitud de devolución (overpayment refund) under TRLRHL

Statute of limitations: 4 years — last 3 years are refundable.

Real case: cadastral value -28% → IBI -€1,176/year → €3,528 refunded.