Estimating Rehab costs

[Alex Ng]

I'm trying my first BRRRR project in Augusta GA. It is a medium level rehab. Carpet needs to be removed and laminate tiles installed. Rehab kitchen and bathrooms. Patch up some walls and repaint the interior with new fixtures. How much on average would this be? How can I go about estimating the rehab costs by myself? I tried looking online for materials but most websites dont list the price. Should I trust a contractor's words? I'd rather be informed so I don't get screwed over. I'm budgeting at most 40k for all of this. What are some tips I can do during rehab to ensure the highest value-add?