More from Trump: Thinking about no tax on capital gains on houses

CNBC Eamon Javers is reviewing some of the comments from Trump at the White House

• He is thinking about no tax on capital gains on houses..

With the housing market sharply higher - especially since Covid - there are two things that may be keeping homeowners from selling their homes.

1. Homeowners are locked in lower rates. I refinanced at 1.99% for 15 years at the lows.

2. If they have oversized gains from owning a home for multiple decades, homeowners would need to pay tax on gains over a certain limit

Homeowners who locked-in lower rates don't necessarily have earned enough profit to have capital gains of over $500,000 for married couples, or $250,000 for single people. The median sale price of a US home is only $422,000.

However, there is a slice of homeowners who have been in a home for multiple decades, they live in areas where appreciation has been great over those decades. They may therefore have gains of $1 million or more. Paying capital gains on gains over $250,000 or $500,000 could be significant. They, therefore, are not anxious to sell. but stay put and take their chances.

The idea is that by taking away the capital gains or perhaps raising the limit, more homeowners would be inclined to sell.