From a financial standpoint, the key is to ensure you're purchasing properties at a price low enough to make rehab costs and refinance achievable.

It helps estimate ARV, rehab costs, and potential returns and offers funding options.

You should factor in time value of money and opportunity cost.  

My realtor stated I may not have enough cash to cover rehab cost after selling.

Typlcally, a lender is going to lend 75% - 90% of the Cost of the project (property price plus rehab cost (scope of work)) or 70% - 75% of the ARV (As Repaired (as completed) Value).

On paper, a GC costs 10% to 20%, but it could be a lot more.  

.- You’re still responsible for a $500 gap each month.Add in maintenance, unexpected expenses, and vacancies, and your costs can climb even higher.

. - Investment Duration: 30days (Investment + ROI in full)- Return on Investment: 45%- Purchased Price: $150,000- Rehab Cost: $30,500- ARV: $240,000- Minimum Investment: $30,500- Maximum Investment: $30,500- End Buyer Escrow Commitment: 20%Rehab Cost BreakdownRehab Cost Breakdown1.

Typical Project Management Fee for a GC General contractors (GCs) typically charge a project management (PM) fee of 10-20% of the total project cost.

To avoid these costs, a common strategy is to set up a land trust to hold the property title.