Investors & landlords

If I make another improvment of 10,000 after converting to rental, then my new unadjusted basis would become 517,000 + 10,000 = 527,000, correct?

 

In other words whether my unadjusted basis will increase as I make improvment to rental property over the years or whether it will be always be the cost basis at the time when I converted my primary home to rental property?