Yes, rental activities and sales, qualify for the Business Profit. However, the Business Profit return is only required if your net profit from your rental exceeds $50,000 and Business Enterprise Tax return is only required if your total sale income is more than $208,000.
You also get to deduct an allowance for any personal 'services' if you participated in renting or managing the property. Find average compensation for NH here: https://www.nhes.nh.gov/elmi/products/oes-prod.htm
You can update the forms under the State Taxes tab.
