Do you need to soundproof an apartment building or complex? The bottom line is that people make noise, and as a landlord or owner you may have to deal with complaints if your buildings are not properly soundproofed.
Changing the way sound carries through an apartment means first determining whether you need to reduce or absorb sound. You may successfully reduce sound transferring from one space to another, only to find that within a room you need to figure out how to absorb sound as well. Options include insulation and diffusion, and you may need to hire out the work of determining what needs to happen, as well as just how to go about it, to a professional.
Soundproofing an apartment is just one way to improve and enhance the apartment. One other way is to spend time spring cleaning the exterior for a fresh look.