You are securing a construction loan from a lender that provides a loan-to-value (LTV) ratio of 75% for an industrial building with a gross area of 100,000 square feet and a building floor efficiency of 80%. The estimated development cost for the project is $20,000,000. The building has been pre-leased to an end user at a gross rent of $20.00 per square foot upon completion. Projected operating expenses are 45%, vacancy is expected to be 5%, and a capitalization rate of 5% is applied. 

What is the equity contribution required from the borrower for this project?