Conversation so far:
what kind of drawing is used in the making stage
Working drawings provide dimensioned, graphical information to be used by a contractor to construct the works and by suppliers to fabricate components of the works
how are the working drawings subdivided
Working drawings logically subdivide into location, assembly and component drawings
what are some applications of working drawings besides construction
Some applications of working drawings other than physical construction include estimating and take offs, permitting, having a permanent record, and having a legal record.
why does a homeowner need a permanent record of working drawings
The homeowner needs the permanent record of working drawings for future repairs, additions, or remodeling projects.

Question: how about a legal record
Self-contained rewrite: why does a homeowner need a legal record of working drawings