They agreed to $450K and this contractor thought it'll make a good rehab.

I'm not planning any rehab so not sure why ARV would be relevant.

inherited" tenants like yours are probably waiting to hear from you, so send out contact emergency info and have them respond and include with next rent payment a updated contact sheet,, I'd make an appointment to tour inside of each unit with condition sheet,, the condition from your date of ownership is now what you use for condition move out.. so once that's completed you now know which unit would be tops on your list to rehab and offer an early out to.. if that's a consideration.. you can of course let all tenants know the rent will increase to $$$ when their lease is up and you are accepting 30 or 60 day vacate notices early, they'll be prepared. 

I am in Alameda county, if I have the address I can check the current property tax and its history. 

First l advertise cross streets a block away never exact address, second if someone call I will pre-screen them over the phone; does the price work for your budget, what do you do for a living, can you provide paystubs, can you pass a background check etc. then because I use lockbox most times I never give the code until first they send me a picture of their drivers license and second they are at the house with the lockbox in there hands to prevent them from even writing it down.Also they must call me back as soon as they are done looking before they leave the property for security reasons, make sure the keys are back in the box and combination is shuffled and of course to tell me what think about the place.

I have found the owners address but can't find their phone number.

I am brand new to real estate (I bought and rehabbed my own home a couple years ago and fell in love!)  

You have more of what you need to do real estate now than 99% of folks that start.My best advice is to stay in construction (you have an established track record) and use those contacts to rehab properties using a BRRRR strategy.

I've heard that banks typically don't lend for the houses that need a lot of rehabs, and it's hard to buy a good deal with VA or standard home loans.

Hello,I am curious as to how I can get the funding to rehab a multi family house that Iwant to buy outright.