I would appreciate any knowledge share, or tips and advice on where to gather information to properly estimate for such a project. 

I let them know, yes proceed on T&M not to exceed the original number and do not do any work above that number.Week later contractor finds an issue and says "hey, we have another issue and we can take care of it for $500, As it stands I believe I am going to come in under my estimated total." - So we authorize the work.Contractor submits the quote yesterday for $8k and is threatening me about it. 

Your estimated first-year NOI is $29,040, but after loan payments, you're left with a negative cash flow of -$9,126 and a DSCR of 0.761, indicating the income doesn’t cover debt service.

Your conservative approach to estimating income provides a solid buffer, and the strategic location adds a layer of security.

I am estimating at least $50,000 between furnishing it and updating.How does this look:$1.3 million with 20% down DSCR loan buy-down the rate from 9% to 8% 30 year = $9,332 (principal/interest/tax).Utilities - $750Income - Was thinking $250 per day but let's say $225 per day for each unit (30 days) just looked at AirBNB and AirDNA in area = $13,500 (.20 vacancy) = $10,800.I would manage it, but still need to think of cleaning fees.

4-Plex details: -currently occupied-estimated sale price 265k-ARV 400k, and 4k/mth in rentBackground on me: -I have an LLC-I own 4 single family rentals-each has around 70k + in equity-all cash flow well -credit is 800+ with adequate income.

I spent considerable time pulling comps and estimating fair market value, but given the unique features of this property, it was challenging to reach a confident valuation.

In my estimation, somewhere between 20-100% more.

There are a few items I have no idea about, I'm hoping someone here has some experience in the field and can provide a ball park means of estimate 3 costs:1.

They will run your credit anyway later, but the bank can give you some estimates with the credit score.