“Please don’t use the word ‘updated.’ The owners are celebrating their 25th anniversary in this home, and there’s always some amazing project going on, keeping it fresh and new.” That’s designer Heidi Hartwig describing her clients’ spacious custom two-story in Chesterfield. And, as if to punctuate her statement, the sound of hammering upstairs is explained as a “refreshing” of the master bath, currently in progress.