Got a spare bit of land not earning you any money? Build some Thai rental units on it, in Pattaya they rent out from around 1,500baht per month to just over 2,000baht per month, plus electric and water, my girlfriends sister has just built a block of 10, cost was 800,000baht, she done them quite nice,all tiled floors and tiled verandas out front, obviously no air con or hot water shower units and things like that.
Could stick a window in this side wall aslong as your more than a meter away from the land boundary marker.
Download full architect plans here Thai floor plans cheap rental units.zip
More Thai House Plans here.