A portfolio figure should tell you how much of the portfolio it read.
One picture across every building — obligations, condition, spend, energy, risk and value — where each number states its coverage and every building with no record is counted as unknown rather than quietly ignored.
Portfolio dashboards are usually built from the buildings that reported. The ones with no data disappear, the average improves, and the board sees a picture assembled from the best-run half of the estate.
Residention inverts that. Coverage is part of every figure. The list of buildings a number could not be read from is one click away, because that list is usually the actual finding.