I am responding remotely so I apologize in advance for any grammatical mistakes or any short answers that require further explanation as I'm happy to prepare a follow up response later if need be.
@Kathy Henley brings up an import issue and there is a very specific provision in the tax code that addresses this very specifically and I know that it certainly could change all the answers below. My answers below are based on my experience as a full-time real estate investor and I am hopeful that someone will elaborate on that issue as it is certainly a hot spot with some friends of mine who I have heard complaining about this very issue that
An important issue to ensure everyone understands is whether your tax treatment is such that you aren't allowed to deduct any expenses or your not allowed to take any losses that result from the property until the property is sold. This is very important to distinguish because if you have income resulting from the property and you have expenses, you can write off expenses to the extent of your income (I believe this is accurate but someone correct me if I am wrong please) but you may be limited in your ability to deduct your losses against other taxable income resulting from your "other career". I mention this only to underscore the importance of identifying the issue and the difference in the expenses and their treatment should you have income on that particular property.
Given that, below are the answers that, in my personal opinion after investing and dealing with real estate for my entire career, that I feel are accurate if you remove the loss limitation issue identified above. Additionally, just so there's no confusion, even though I am a licensed CPA, I do not even prepare my own tax returns ( although I have several real estate friendly CPAs I would be comfortable in referring you too because, in my business of 1031 exchanges, I have met many qualified CPAs) and my responses are primarily based on my real estate investment experience personally and not the fact that I'm a CPA. Here we go!
With respect to question number one, the answer is really going to turn on when you incurred those expenses, or more specifically, when you actually wrote the check or charge them on a credit card. It's a timing issue of when the expenses were incurred and not when you purchased the property. This could be different if you're an accrual-based tax payer but I am fairly certain that you were not as 95% of the population, including myself, is a cash based taxpayer.
With respect to question number two, if they are not capital expenses, then they would be expensed in the year incurred and not depreciated. Capital expenses would be something along the lines of re-roofing a house or something that extends the useful life of the asset. Contrarily, recarpeting is something that is probably a necessary and ongoing type of repair that does not necessarily extend the useful life of the asset so I think you're fine to expense items of that nature without issue. Finally, there is no exact science ( as evidenced by the fact that you will probably have numerous opinion variations to this question and if you have 500 CPAs in a room and ask them, you will probably have 500 opinion) so the easiest way, if you are unsure and you prepare your own tax returns, I would keep it simple. At the most basic level, if it is an expensive and large undertaking, it is probably more capital in nature versus a less expensive job that will likely occur several times over the life of the asset, which indicates it might be an expense that can be deductible in the year paid (and charging to your credit card is paid for deduction purposes). Most importantly, remember that expensive is relative to the asset and not to you/taxpayer. This is simply a good rule of thumb and I hope it ads some value for you.
With respect to your question number three, in reading it I don't believe that listing a property for sale has anything to do with it or will have any impact on your federal tax returns. The actual purchase and sale and incurring expenses is what is important but Listing something for sale, in my opinion, does not have any impact on your federal income tax returns.
I hope I helped! it certainly did not end up being a short of an answer as I anticipated when I started!