Hi Schrods0215, you can only deduct property taxes paid and mortgage interest paid on your tax return each year.
Remember that deducting interest (on mortgage up to 750K, if mortgage is over 750K a portion of the interest will not be deductible) and taxes paid on your home are part of itemized deductions; if your standard deduction is higher than itemized deductions, your taxes and interest will not be used because the standard deduction is a better deduction for you.
Home improvements are added to the cost of your home and increases what you paid for the home. So when you sell the home, your gain will be less. I have attached an article you can refer to below.
https://turbotax.intuit.com/tax-tips/home-ownership/home-improvements-and-your-taxes/L6IwHGrx6