Estimating rehab costs

[Tim Donovan]

Hi!

I'm new to the group and RE investing and have been trying to analyze a deal a day. I am having a lot of trouble with estimating interior rehab costs. I know it differs greatly based on location. Ill attach a picture of an example of a house in MA. I have the book Estimating Rehab Costs and will read it next after House Hacking. I have also thought about buying Home Depot DIY books. 

Is there anything else I should read?

Is there a percent that is used when estimating?

Thank you for the help!!

Stay Healthy

-Tim