Vacancy sign (2,3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">vacancy sign</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for to let that I've seen before include "Available for a tenant" , "Sign on property available to rent" , "Available for hire" , "Estate agent's sign" , "open to offers" .)
(Another definition for tolet that I've seen is " for hire".)