The Model-Drift Map: How Additions and Remodels Change an Original Eichler Floor Plan

An Eichler can look original from the street while carrying decades of hidden floor-plan drift. This Property Nerd field guide explains how to read roof seams, interrupted beam grids, enclosed atriums, expanded bedroom wings and converted garages—then map those changes with a 20-point Model-Drift Score and a separate documentation-confidence grade.