Hi,

I am purchasing a new house (2400 sq ft, 4 bed rooms) in San Diego.
The builder asked me if I want the inside walls insulated just like
the outside. They mentioned two benefits: noise reduction and better
insulation(windows in one room could open). The cost is $1250.
I like a quite house and this seems like a good option to have. But I
don't want to waste money if the benefit is minimum. Any suggstions?

Thanks!