When does “enrichment” become “unjust enrichment”?

Equitable doctrines such as unjust enrichment, unclean hands, and quasi-estoppel are frequently cited, but by their nature, they are difficult to define with specificity. An uncommon “data point” about unjust enrichment appeared in Hawkins v. Jenkins, No. 05-19-01396-CV (Jan. 8, 2021) (mem. op.) The trial court awarded roughly $10,000 in connection with certain home improvements; the Fifth Court affirmed, noting that “the record contains evidence that appellant reaped a financial benefit from the improvements: she sold the house for $77,000 above its value before appellees made the improvements.”