Overview

Version 1.3.0 (7 October 2026): corrections and clarifications; see the Journal's errata page (journal.valuation-engineer.com/index.php/vej/errata). Pages 13-22 of Vol. 1 No. 2 (formerly 13-21). Version 1.2.0 (5 October 2026): the description of The Purposes of Valuation (012) restated to match its version 1.1.0. Pages 13–21 of Vol. 1 No. 2, unchanged. Version 1.1.0 (5 October 2026): corrected — see the Journal's errata page (journal.valuation-engineer.com/index.php/vej/errata). Condition is restated on the Journal's 0.00–10.00 condition score and a remodel as an event whose value is the condition and quality it produced; every number is unchanged. Pages 13-21 of Vol. 1 No. 2 (formerly 13-20).The second issue of *Foundations* carries eight entries in two movements. The first movement takes up the statistical concepts that the inaugural issue used without naming, beginning from the loose end it left: a hedonic regression that missed one of eight Pacifica comparables by $46,455. Four entries form a chain, each a different kind of failure. Conditional Expectation names what a regression estimates and establishes the identity on which the movement turns. Omitted Variable Bias gives the formal account of what happened to issue 1's coefficients, the case where needed information is present but unused. Endogeneity generalizes it, showing that measuring an omitted variable cures the omission without necessarily curing the correlation between regressor and error. Identification asks whether the parameter could be recovered at all, exhibiting a sample where including the same variable fixes nothing because the information is absent rather than unused. The second movement is legal-conceptual, forced by this issue's survey of recent court decisions. The Scheme, and Effects on Value is the hinge between the movements: it takes the project for which property is compulsorily acquired as the reference for attributing value effects, and states in the first movement's terms that the law fixes the form of the valuation counterfactual, a tribunal fixes its extent, and the identification of no-scheme value from scheme-world data stays with the appraiser. The Purposes of Valuation sets out the journal's classification of practice, eight purposes each descending through basis of value, property rights, legal and regulatory context, and methodology, with the quarter's verified instruments placed under their purposes, the purposes without one reported empty rather than filled, and a concordance to the eight litigation categories of the court digests. Terminological Divergence classifies five recurring forms of cross-language mismatch in valuation vocabulary and records that no statute surveyed carries an abstract noun for a value effect. The Basis of Value and the Approach separates the kind of value an assignment requires from the approach used to reach it, and shows one set of comparables supporting two figures under two bases. The overview also records a property of the issue-1 dataset: beyond the remodel term issue 1 disclosed, it is exactly noiseless, generated by a linear function whose $60,000 remodel term accounts for the Comp H residual. The dataset is extended here to sixteen properties with measured renovation flags, leaving issue 1's published attributes and prices unchanged, so that every discrepancy in the first movement's worked examples is bias with no component attributable to sampling variability.