I'm guessing this is a REIT...
It makes sense that Net change in fair value of investment properties is recorded as a profit or loss on the income statement, because these changes are also made to the company's assets on the balance sheet.
If you are concerned that this is a non-cash profit or loss so it is less real than the rest of net income, you can look at the cash flow statement where non-cash items such as property value changes and depreciation are excluded. For REITs, there is also the statement for distributable income (or "amount available for distribution to unitholders") that likewise cannot include non-cash items.