Home office renovation

I opened a home equity line to do a home office renovation.  The renovation began in 2023 and will be complete in 2024.  It will be a space where I meet clients, work and have displays.  Samples and inventory are in the old home office.  It costed around 95K by completion.  Which year should I file the expense in?  2023 or 2024 or both.  Also I paid down the equity line with my business income in 2023.  Is this deductible?  Any insight is appreciated.