Section 531 - Collection of assessments in default; procedure; deficiencies(a) If a freeholder in the suburban community fails to pay the full amount of the freeholder's proportionate annual amount of the special assessment or levy within 1 year from the time within which it becomes payable, together with interest at 6 percent thereon, the entire amount of the special assessment or levy shall immediately become due and payable, and the receiver of taxes and county treasurer shall proceed to collect the full amount of the special assessment or levy by any legal process available to him or her by statute for the collection of state, county or school taxes.(b) If any property encumbered by the special lien provided for in this section is sold by foreclosure or execution process and the proceeds from such sale are insufficient to pay in full the amount of the special lien together with all interest and penalties thereon, then the unpaid portion of the special lien shall not be discharged by virtue of the sale. 45 Del. Laws, c. 123, § 27; 9 Del. C. 1953, § 531; 70 Del. Laws, c. 186, § 1.;