Make sure you have a financing contingency in place, and hopefully there's flexibility to  extend that if needed.Good luck!

Also extend your deadline.

@Mary Jay ask the new broker to show you 95% ltv & 90% ltv loan programs with No PMI options.Also, ask for 1% Lender To Borrower Credit to help with closing costs.If the seller is getting upset and worried, to give yourself and your new broker time (AND IT WILL TAKE TIME), ask the Listing Agent and/or your Buyer's Agent to offer the seller a realtor rebate of $500, $1000 or $2,000 to extend the contract.  

@Ted Klein I've already learned through trial by fire that dealing with a historical district committee can be a major pain but as long the holding cost for the extended timeframe is accounted for in your budget there's usually not much of an issue.

If your tenants are month-to-month the easiest way to move out ones you do not want is just give them the proper notice that you will not be extending that relationship.To answer the question in your subject line, sure, it would be a great idea to re-screen them before signing a 12 month lease. 

persistence and habits done over extended periods of time

We (myself and the man who owns the other 3) are thinking of offering to help pay to extend the fence out a bit so that this sits out of sight a little bit. 3.

Will a typical bank or credit union use our current rents to determine value/how much credit they'll extend or will the rents need to be seasoned a few years like the guy who did our refi said? 

I had a renter client who had a $5,000+ loss covered (frozen heating pipes & repairs made apartment unable to be used for an extended period of time.  

Again I thank you for showing me new ways to look at different avenues for real estate investing and extending yourself for me to learn more.