The county appraiser says there is 2363sqft, however I don't think it has had another survey done in, lets say, 57 years.

In an ideal works one should take tenant surveys and see if your tenants are relatively happier than other tenants in the area.

This involves getting a new survey and "inviting" the town inspector to come onsite and evaluate the structure(s), including determining which structures were original (pre 1959) and which were added subsequently.

Expecting anyone else (sellers, agents, etc.) to do so is a bit egomaniacal.Go out after the storm when everyone is surveying the damage going "Oh, WTF, this is a disaster.

It covers some of what you have on there (financing/survey/inspection) and you can add the others in additional provisions.

Have a updated title search and survey done along with a house a appraisal and inspection to know what needs to be done.

Should i get a survey done to mark the property boundary?

One of the contingencies on this property with Fannie Mae was they completed a Flood Elevation Survey.  

I'm looking for some help on the numbers.This would be my first BRRRR deal so kind of nervous.Purchase price $281KClosing costs (Attorney fee 995 +inspection 600 +survey 250) = 1845Total = 282,845Rent estimate = $2400Prop mgmt = 230 (10%)Tenant turnover = 110 (5%)Prop maintenance = 110 (5%)Capex = 110 (5%)Tax = $350Ins = $100 (guestimate)Reno budget = $25KARV = $330KRefinance: P+I = $1275 (70% refi)Prop mgmt = 230 (10%)Tenant turnover = 110 (5%)Prop maintenance = 110 (5%)Capex = 110 (5%)Tax = $350Ins = $100 (guestimate)Net = 2400-2285 = $115 /mo.I know it's not a lot of cashflow, but A class neighborhood and potential equity make it a sweet deal.

If anything I'd take that $ and get a survey to make sure the fence isn't encroaching on my property.