Contractors needed to give me bids for a rehab in Los Angeles

[Alex K.]

Hello Everyone, 

First time investor about to put down a lot of money on  a single family home in Los Angeles. And I am scared out of my mind. 

The home seems to have good bones but the house needs lots of work. 

Roof, flooring , outdated kitchen , and 2 bathrooms outdated, new paint. 

I know I need to get estimates from contractors in my area. Does anybody have any suggestions on how can I go about this the most cost effective and efficient way. Any good contractor contacts in my areas for a wide range of things I might need? 

I have no idea how to estimate rehab costs effectively and manage contractors . 

Any help is appreciated. 

Thank you, 

Alex