Correct way to write off inventory first yr after purchase?

[Mats Daniel Skrede]

Good day, all! 

Last year I purchased my first investment property. In my bid that was accepted, I included in the conditions that I buy the property as is and that everything will be included with the purchase; including appliances, beds, sofa, tv, jacuzzi, outdoor patio, etc. The bid were accepted and we did not set any additional cost for this in the contract. 

Now when doing the tax return for the first year after purchase, how would one go about properly setting a value on all the inventory when writing this off?