Dimmer switches & LED lights: Lights keep turning up to max and won't stay dim
I agree with previous poster to experiment with different bulbs. I have a different circumstance (older dimmer switch with track lighting) but the symptoms were similar for me. I was hearing a maddening low hum unless on full blast. I found that LEDs labeled as dimmable or regular incandescents work fine. It was an off brand LED that finally worked. Also consider that newly built does not always = correctly built.