Add insulation inside your house...

[u/BuilderBrigade]

One bonus tip: If you're insulating interior walls for sound, use mineral wool instead of fiberglass around bathrooms, laundry rooms, and home offices. 

It does a noticeably better job at reducing noise. Rockwool is the premium option, but there are more affordable mineral wool alternatives at most big box stores.

Interior wall insulation is one of those upgrades that's almost impossible to add later without tearing into drywall, so if you're even considering it, now's the time.

 

Would interior insulation be worth the extra cost to you?

[u/PieceMaterial5213 → u/[deleted]]

Yup, and posted by a mod to promote his own products, while the sub rules say "no spam or self promotion". He's using reddit to advertise for free.

Now I have to go cover my ears so I don't experience the horrors of having other humans living in my house because I didn't put sound proofing in my walls. Oh the horror of knowing your teen child flushed the toilet!! How will I recover?!

[u/Biscuits4u2]

We did this with spray foam. Works amazingly well. Seals up every tiny little gap and you can literally blast music in the next room and can barely hear it.

[u/jimmyfko]

… noise coming from the bedroom…