I sold my vacation home after it was up for sale for over a year. Can I add utility costs and property taxes paid during the time it wasn’t being used by me to the cost basis of the home?

Qualified plan

A retirement plan that meets tax law tests and allows for tax deferment and tax-free accumulation of income until benefits are withdrawn. Pension, profit-sharing, stock bonus, employee stock ownership, and Keogh plans and IRAs may be qualified plans.