You are typically required to obtain Building Plan Approval within 3 months from the date the OCA letter was issued.
If you have received an intimation about your allotment, you can download the letter directly from the GIDC OCA Portal : Enter your Applicant Name . Step 2: Provide your Registered Mobile Number and Email ID . Step 3: Click "Get OTP" and verify it. gidc allotment letter download
A down payment of 30% or 50% is usually required within 60 days. You are typically required to obtain Building Plan