Laying Foundation Law and Legal Definition

Laying foundation refers to the practice of introducing evidences necessary to make further evidence relevant.

The following is an example of a case law referring to the term.

“There is no difference in primary or secondary evidence as to the weight. The difference is in the preliminary proof necessary to lay the foundation for introduction. The preliminary proof laying the foundation for the introduction of secondary evidence of contents of lost instruments is addressed to the court, and the court determines whether a sufficient showing has been made to permit secondary evidence to go to the jury. Whether such instrument was wilfully or accidently destroyed is material for laying the foundation for secondary proof. [People v. Wells, 380 Ill. 347, 355 (Ill. 1942)]