For concrete floors, acoustic underlays or floating floors designed to reduce sound work well. Costs vary but expect to spend at least £1,000 depending on the size of the area and method chosen.

Using thicker commercial panels or a specialty acoustic drywall, like Pabco’s QuietRock or SilentFX by CertainTeed, can significantly lessen sound between rooms.

QuietRock ES Mold Resistant acoustic drywall patented easy-to-snap technology drives lower installed labor costs than other brands July 12, 2011 08:49 AM Eastern Daylight Time ...

West Construction News Best Projects 2013 Specialty Trades Install Complex Acoustic Panel Geometry By Scott Judy December 2, 2013 ...

Cite: Etex Chile. "How To Improve Acoustic Comfort with Perforated Cardboard Plasterboards" [Cómo mejorar el confort acústico con planchas de yeso cartón perforadas] 25 Nov 2018. ArchDaily ...

Alternatively you could add a layer of sound board, which is an acoustic plasterboard to dampen noise. Noisy appliances Noise from appliances can cause disturbance, especially in an open-plan space.

Drywall is lighter than its traditional version and is designed to provide a high acoustic performance, something that the normal wall fails to accomplish.