One of the duplexes needed a new roof.

Not important but I've got a new Roof too!

I am hoping on our next deal they will come down on interest a bit.Ok, so here's what the house looked like before we bought it:So far, we have painted the exterior, all new vinyl windows, new exterior doors, new garage door and opener, installing French drains and a sump pump due to there being a bad ground water issue in the crawl space last spring, new roof, opened up the kitchen, put in a french door, replaced all the wood flooring, tiled in bathrooms, framed in laundry and mechanical, shelves in the pantry, all new interior paint, heated flooring in master bath, can lighting.

Also, if the houses are "not in great shape", then you are likely in for expensive repairs and replacements (roof, flooring, etc. referred to as CAPEX).I would advise you do some searching on BP and read up on Section 8 tenants.

Several houses have needed new roofs, heating systems, entire replumb and or rewiring.

My question is, assuming each property is in good overall condition and solid, no major capex expenses are on the horizon like a new roof for instance, how much should I be keeping in liquid cash for large unexpected repairs to these properties?

Account Closed we do set aside some money for expenses, but our income allows us to put the rent back into the house as I don't have money sitting around to finish a full renovation on a house from footings to the roof.

Your choice, BUT a 10yr roof is not 'in poor condition' unless A) it  was installed 11yrs ago B) an inspector says so in writing. 

Then try to rack down the owners.

Does anyone have any information/advice RV storage? Pros and cons? Was thinking about erecting one on some property I currently own. Thanks in advance !