They have already violated the lease by moving people in without your permission.

Some familiar names you'll see thrown around a lot: Stessa, Apartments.com, RentRedi, TenantCloud, Innago, RentManager, Avail, Rentec Direct, Doorloop, etc.I recommend you search for each app online and see what they offer, how much they charge, etc.

The first question is of course, can you get a loan with less than 20% down - but I'll assume you can given that you're exploring both options.I recently read Real Estate by the Numbers by J Scott & Dave Meyer (shameless plug it's available through the BP bookstore here) and in chapter 36 they discuss exactly this - that in some cases using more leverage can actually boost your returns and you should run the numbers both ways to see what makes sense for you.

Either there are cheaper options you can go to or you just need to consider it the cost of doing business and factor it in to your offer price.

Builders risk, general liability, etc. are all purchasable by the owner.

In my state, Virginia, full calendar-month notice is required with month-to-month, meaning full June rent is due June 1 unless notice was received by April 30, so there would be no rent credit due for any day in June with a May 12 notice. 

Bigger Pockets is a great place for education and networking and is full of great content.I recommend that you check out the following resources:If you want to network or ask specific questions about your local market, go to your local real estate forum and connect with investors from your area: https://www.biggerpockets.com/forums/86-local-real-estate-networkingYou can meet local investors by registering to attend real estate events in your area: https://www.biggerpockets.com/forums/521-events-and-happeningsGood luck.

Stick by what you offer.

There are a lot of tax lending companies that send flyers to those on the list and offer to loan them the money to pay the taxes and some take the deal and the properties are withdrawn from the sale.  

Anyone here have experience with Rent by the Room in CLEVELAND HEIGHTS?