Мога ли да приспадна разхода за оценка (taxatiekosten)?

Yes, the cost of the valuation report (taxatiekosten) required for your mortgage is generally tax-deductible in the year you buy, because it relates to arranging the loan. Keep the invoice, as you declare it in your income tax return (belastingaangifte). A valuation done without a mortgage, purely to set a price, is treated differently.