I'm not sure what you are asking, or why you are asking now, in 2022, about transactions that took place in 2014 and 2018.
It seems that you had four transactions:
- In 2014, sold the lake home.
- In 2014, purchased an investment.
- In 2018, sold an investment.
- In 2018, purchased a new home.
Your question is "Would this be taxable?" What is "this" that you are asking about? Purchases are not taxable and are not reported on your tax return. The sales of the lake home in 2014 and the investment in 2018 had to be reported on your tax return for the year of the sale, whether you had a profit or a loss on the sale. If you had a profit on the sale, you would have to pay tax on the profit.
If you have not yet filed your tax returns for 2014 or 2018, they are obviously very late. If you owe tax for either year, you will have to pay penalties and interest in addition to the tax that you owe. The sooner you file, the less you will have to pay.
