Simple way is to take picture and upload ot on every social account he have because people mostly visit those sites where they see the best thing like he should make a link of the land or or selling place than he should upload it on every comments and if he like to give in bio so this will be more easy the searching people will visit his site and if the property or land locates in good area the seller will must visit and buy the land.but for this you have to follow this rules and wait for the good time