You can get some estimates from contractors for what they charge for big ticket items like to renovate a bathroom, renovate a kitchen, replace the furnace, replace the roof, etc.All wholesale deals should have free and clear title and you should be able to see the sales agreement before submitting the earnest money deposit.

I could completely be misunderstanding the process, so thank you, in advance, for clarifying these items for me.

If you intend to vacate, the original lease agreement states you have to provide a 30 day written notice of your intent to vacate.

The AP has to be open, notorious and hostile...those terms have a legal meaning and essentially it is that you as the owner have been fully deprived of your right to the property.Absent those items above, it sounds like at best they have another legal right which is a "prescriptive easement".

Show the lease agreement, show his rent payment history, and show any written evidence from the tenant that he admits to being late/unpaid.

This way I get paid upfront for my work 1-2k plus I know I have another payday at some point in the future if the deal closes.The costs to fully develop a property and sell for near retail usually involves the costs below and takes 2-6 months or more in some cases, but the profits can be huge if you're working in markets where land costs are high:Title 200-400Legal 500-2000 depending on zoning issuesIf wetlands are present AND its a buffer zone project: 2000-5000Perc & septic design if needed 1500-3000Treescaping & cleanup for retail sale 500-1500Selling costs of 6%I tend to stay clear of properties that need more than the above expense items.  

Dang right, I'd be trying to find jazzy ways to lease, to then run as STR.

This is one way to manage costs risk.The ways to own the property besides FHA & conventional loans is with private loans, investor DSCR loans (non owner occupied); seller financing, lease options, partnering with others to take the property down..... 

At the same time, the third-floor tenants overstayed their lease and brought in unauthorized occupants.

.- Tenant submitted a work order for low water pressure in 2 bathrooms- Tenant submitted a work order because the garage door doesn't close all the way and left a 2-3 inch gap at the bottom- Owner initially refused to address either work order- Owner demanding the tenants place furniture pads on each piece of furniture- Owner calling multiple times to speak through the work orders, asking when they've been scheduled, calling a couple days later requesting the invoices- Owner calling because they want to access their storage in the basement so they can remove several pieces of furniture being stored- Owner now emailing requesting multiple property inspections throughout the lease cycle- Owner questioning my experience and relative PM knowledge because I'm not following up with her in a timely manner (the following day after the work order)Keep in mind, this is 2 weeks after the tenants had moved in and the tenants are very happy in the home.This is something we see on a regular basis.