marriage value

Etymology
From 🇰🇲.

Noun

 * 1)  The difference in value between a leasehold interest in land and the hypothetical value of its reversionary interest were the leasehold to be determined, which typically increases as the leasehold draws towards its end; frequently considered the market value chargeable to the tenant for a long extension of the leasehold, or for the purchase of the reversionary interest.