D&D 5E (2014) Interior wall construction

[dave2008]

Make sure the door is insulated and has a rubber insulation around the frame. Not worth spending the extra money for a room if everyone can hear everything through the door.

And if you want to get really serious you need to use acoustic sealant at all penetrations through the wall membrane (think outlet boxes, light switches, etc.)!

 

[dave2008]

Also, don't forget about the ceiling and floor too!

 

[Koloth]

For OP's question, look at Post and Beam construction for framing.

Not sure when plaster and lathe came in but pretty sure that is what the 2nd poster is thinking of.

A lot of Fantasy RPG buildings probably just had the outer sheathing and left the interior framing exposed. If you assume a wizard has a research library, bookcases could serve as the inner walls for tiny adventurers to hide behind. If a high enough level wizard, maybe some wall of stone/iron for inner wall sheathing. "Looks like a normal peasant home but for some reason, our ballista bolts are not penetrating."

 

[Eyes of Nine]

Conjuric living bamboo covered by mythwall that needs to be continuously repaired through the willing service of fabromantical beetles. Said beetles are not "loyal" in the way we think they are - with the right incentives, the beetles will allow others to pass through their interstitial burrow networks as well as utilize their abstructural gateway ovoids.

 

[Eyes of Nine]

Or yeah, double wood stud framing with lath and plaster.