In general, section 1250 property refers to most real estate property. This includes property such as residential property, rental properties, commercial property, or land.
In particular, the IRS defines section 1250 property as "All real property that is subject to an allowance for depreciation and that is not and never has been section 1245 property". For further details, please see
section 1250 property defined in IRS
Publication 544 .