Question:
Is a man allowed to be totally undressed at home alone
Answer:
Hello,
Without getting into the general tznius issue that a person should not be unnecessarily undressed, since we are always in the presence of Hashem. Your question is worse because it is disrespectful to any holy seforim, a mezuza, or the Shabbos candles for the person’s ervah to be exposed in front of them.
Best wishes
Sources:
אורח חיים סימן רעה סעיף יב
הגה: נהגו לכסות הקטנים שלא יהיו ערומים בפני הנרות, משום ביזוי מצוה. וכ"כ הרוקח.