Hi,
My friend's house which is only about 1.5 years old recently had termite problems. They found out when they were doing weekly house cleanup and needed the vacuum cleaner. The box where they keep the vacuum cleaner was breaking down and they saw those sand tunnels nearby coming from a hole in the ground (I think it was the telephone and electrical conduits found in newer homes, underground wires and all).

Good thing was they had some experience with termites in their previous house so they called their regular pest control company. The guy was nice enough to recommend checking the warranty on the house since it was still new. Good thing too as there was a remainder 6 mth warranty. So got the developer to come and rectify the problem...it took a couple of weeks of calling and calling and then they finally came to take a look. The rep from the developer was not so helpful.

If I am not mistaken they decided to continue the pest control services as a precaution since the developer did not do a thorough treatment on the land before construction.