He deals with vendors and contractors.  

I’ve done many flips and always had the correct insurance, so this foolish oversight proved costly.The Silver Linings:My Contractor: My contractor went above and beyond.

You can get screwed on changing markets and unreliable contractors though.  

I'm a licensed contractor focused on interior remodels, and a realtor as well, reach out if you have any questionsBest,Ryan

Also, grow your contractor lists, maybe make posts about their work.  

One challenge was coordinating rehab work within tight timelines to minimize holding costs, but we navigated it by hiring a reliable contractor.

Confirm that the warranty applies to the type of property you own and consider whether the annual cost and service call fees make sense compared to just handling repairs yourself or using your own trusted contractors.

Buying site unseen is a huge risk unless the buyer and wholesaler have a history doing deals together.My buyers trust the deals that I bring them, but I also provide them with in-depth inspection reports along with photos/videos of the inspection along with multiple cost to completes through multiple contractors.

You can read a book and multiple books, but unless you are out there doing it (I.e. getting bids and getting contractors to truly get you an exact estimate) you will be far off from the numbers you want and may even lose money on the flip/rehab.The best advice I would suggest in my experience is that you should get into the line of work by either partnering with someone or working with someone on some projects prior to going into a flip on your own.

The hard money lender I worked with was instrumental in closing quickly, and I partnered with a fantastic general contractor who helped me stay on track despite the challenges.