Many snakes around in rural Isan, don't let anyone fool you.
I live about 50 km from Ban dung so you won't see the snakes on my farm, otherwise you would relocate yourself
Had many snakes on my farm, around the house too, Spitting Cobras, Kraits, Pit Vipers, Russel's Viper. These are the venomous ones I encountered. The majority though is harmless, like have been posted by Kopkei (Golden Tree snake)and Parrot (Kukri snake). Rat snakes, Keelbacks, Bronzebacks, Laotian wolfsnakes, they are all abundantly present here.
Advise to the OP: change your fear into knowledge, with help of the thread "venomous snakes of Udon thani" from Michael C. you can learn to recognize snakes, like has been said most snakes flee, some will attack if threatened f.i. by a dog, or when you step on their tail which I did, got bitten and nearly died. I learned to determine what snake it is and in most cases the harmless snake will disappear. Those venomous snakes that come too close to the house will be killed, like I had to do the first year when 7 Spitting Cobras came to the idea to stroll around the (newly built) house.
If your house will be built in rough terrain some snakes will have to move and might come back later...
Live with it, this is Thailand so a country full of snakes...
Good luck
Joe