Abstract: Disclosed is a method of generating a set of sequence-verified nucleic acid elements for the combinatorial construction of genetic elements. The method includes: providing a plurality of nucleic acid parts; assembling nucleic acid parts to form a one or more nucleic acid elements, wherein the nucleic acid elements include at least two sequences selected from the plurality of parts; and determining the sequence of the nucleic acid elements. Further disclosed is pool of higher-order nucleic acid constructs or amplification products thereof, comprising one or more nucleic acid elements as well as kits including a the pool of sequence-verified nucleic acid elements of claims and/or a pool of higher-order nucleic acid constructs; and a plurality of primers for retrieving one or more sequence-verified nucleic acid elements and/or higher-order nucleic acid constructs.