Creak

                   BeCause this old building  
               is neaRly a 
                    cEntury into its existence
it's developed quite A vocabulary
            with its Knotty wood floors

Update: And [again](https://disquiet.com/2021/04/29/mesostic-bark/), shortly after I posted this to Twitter, I was rewarded with [a remix](https://twitter.com/GuyBirkin/status/1388183795157905411) by Guy Birkin:

Because this old buildinG
       is nearly a centuRy into its existence
              it's develOped quite 
                   a vocAbulary with its 
                       kNotty wood floors