Revenue and Taxation Code § 4157

The amount necessary to redeem the remaining parcel is the sum of the following:

(a) The amount of defaulted taxes on the whole assessment less the amount of defaulted taxes on the parcel separately valued.

(b) Delinquent penalties on the whole assessment less the amount of delinquent penalties on the parcel separately valued.

(c) Costs on the whole assessment less the amount of costs on the parcel separately valued.

(d) Redemption penalties computed on the amount of taxes and liens remaining on the parcel for each of the years for which it was delinquent.

(e) The redemption fee provided for in this part.