UNDERBIDDER UNDERLET UNIMPROVED VALUE UNLISTED PROPERTY TRUST      

UNDERBIDDER   The person who makes the second-highest bid at an auction.

UNDERLET Let at a rental below the current market level.

UNIMPROVED VALUE   The notional value of land as though it had no buildings erected on it (contrast "Improved Value").

UNLISTED PROPERTY TRUST   A unit trust with the bulk of its assets invested in property and which is not listed on the stock exchange.