On SAR we could land pretty much anywhere to get the job done and in remote areas this wasn't often a problem - and you made sure you didn't damage property or frighten livestock.
In crowded areas - beaches for example - we would often use the Coastguard ground units or RNLI Lifeguards to clear an area.
Trouble is, holiday makers can be very territorial when comes to their selected beach area and sometimes only a slight sandblasting would persuade them that the casualty's need was greater than theirs
Lifesaving tends to trump petty issues like landowners permission.