SALE OF HOUSE
If your gain was more than $250,000 filing Single, or more than $500,000 filing Married Filing Jointly the sale must be reported on your tax return. Whether you re-invested the gain in to another house is irrelevant. If you have a Form 1099-S go to Federal>Wages and Income>Less Common Income>Sale of Home (gain or loss)
If you owned and lived in the home as your primary residence for at least 2 of the last 5 years on the date of the sale, you do not have to report the home sale if the gain is less than $250K filing Single, or less than $500K filing Married Filing Jointly (and you both owned and lived in the home for at least 2 years).
NOTE: If you have ever used the home as rental property or claimed a home office, you have more information to enter
That depends.
If you got a 1099-S at the closing, you must report the sale even if you did not have a taxable gain.
If you did not get a 1099-S, you do not have to report the sale if this was your personal home, and your gain was less than your personal exclusion limit. If your gain was more than your exclusion limit, you must report it. For information on how to calculate your exclusion limit, and your gain, see publication 523.
https://www.irs.gov/pub/irs-pdf/p523.pdf
If you report the gain for any reason, that means your tax return will include schedule D to report capital gains, and form 8949 to report the details of the sale of the property. You do not include your contract, HUD-1 statement, or any other original documents, although you should save those documents in case of audit later.
You do not submit any paperwork with your tax return, other than the required tax forms, such as Schedule D and Form 8949, if you are required to report the sale. If you enter the sale in TurboTax it will automatically create the necessary forms and include them with your tax return. If the IRS wants any additional paperwork they will send you a letter asking for it.