Owner concentration

Definition

The share of managed doors held by one landlord, who can move the whole block with a single notice.

Why It Matters

Doors under management reads like a diversified book and often is not: a single investor with forty units can leave inside the termination notice period and take a fifth of the revenue with them. The risk is the same as customer concentration in any service business, and it is hidden by the unit count that the trade sells itself on. Ask for doors and revenue by owner, not by property, and read the top five against the notice period. A concentrated book with a thirty-day notice is a different asset from the one the listing describes.