This is not allowed per DVC. Rentals have been slow anyway lately with the economy, with some folks dropping their rental prices.
It would depend on the scope and numbers involved. We can't make a blanket statement it's not allowed but in the extreme it would not be.
Not so quick. There are special rules related to timeshares and even non timeshare properties are not quite as easy to qualify for deductions as most people think.
It is complicated, we were just discussing this on a thread a couple of days ago
HERE. It would be possible but unlikely to not have to claim the rental income as per the vacation home rules. Someone who bought specifically or mostly to rent could easily depreciate, claim closing costs, interest, phone calls, listing fees, dedicated computer programs to track points if paid for including excel, paypal fees, redweeks and TUG membership, even Timesharing today membership. Everyone can claim RE taxes if they itemize. Depreciation would lower the cost basis creating a possible higher capital gain if one sold later.
And, of course, 20 is an entirely arbitrary number. Next year they could decide that 15 is the number, or 4. The number is whatever they make it, and if they say you're a commercial renter, life will be hard.
That's the problem with the "DVC Landlord" concept. It's a business model entirely dependent on the benevolence of your direct competitor.
While 20 is arbitrary, the fact that the legal paperwork including the POS specifically allow renting and that that a definition of "commercial" was omitted would require that DVC have a definition that would stand up in court. IMO, that requires something that essentially everyone, including those that rent, could agree is commercial. So while they could vary from 20, it's unlikely it could go much below that. Then you get into what's 20. Is a change of room types or resorts one or 3, etc.
IMO, buying DVC mainly to rent is a fools approach. Far too much risk and too little reward to make it worthwhile to buy with that idea in mind. Now if you get other benefits like home resort priority, it might be worth the risk and hassle but generally not and certainly not from simply a rental income standpoint. Assuming 12% before taxes in a good mutual fund (likely a lowball figure for current investments), DVC can't touch that. Buying today, about the best you could look at would be 6-8% before taxes assuming you didn't finance.