Estimated repair cost is zero?

Based off my house which is in the same HOA my rough estimates are:ARV is about $130kRent would be in the $1300-1350 rangetaxes and insurance run about $475maintenance would be about $130 (10%)cap ex $130 (10%, property is about 40 yrs old, most exterior work is covered under HOA) management $130 (10%, planning on the possibility to hand it over to a manager)vacancy $130HOA is about $175This totals costs to be about $1150-1200, which doesn't leave room for a mortgage.  

But, know that just like any other appraisal, it's someone's best estimate of the value and may not always be accurate, especially if the appraisal was done a few months ago.  

Scott The Book on Flipping Houses, The Book on Estimating ReHab Costs http://www.biggerpockets.com/flippingbookConsider checking out HUD homes for small multi's owner occupied gets first crack.

I would suggest paying a contractor for a couple hours of his time to come and walk through with you to give a ballpark unwritten estimate for repairs. 

Get a contractor over there to give you an estimate so you can use in your analysis.

So here are my rough numbers.Purchase Price 90KFinish rehab est. 10KARV                      130KTaxes                     900Ins  est                   600W/S/G  est             1000Rents est              1600-1700Questions:1  what should I estimate for repairs/cap ex on a rehabed 100 year old duplex?

Scott The Book on Flipping Houses, The Book on Estimating ReHab Costs http://www.biggerpockets.com/flippingbookConsider checking out HUD homes for small multi's owner occupied gets first crack.

Security deposits are not a Landlord's possession until a tenant literally damages the place is inspected by a professional contractor or handyman write you out a repairs estimate.

They often under estimate vacancies.