Once the initial underwriting is done, the loan officer will get conditional approval on your mortgage. What that means is your loan is approved, post few conditions are fulfilled.
In this step of the home loan process, the underwriter may ask for additional documents such as additional bank statements, additional income documents, appraisal reports, etc.
Once you submit that the underwriter will review those documents, and once they are verified, your loan is clear to close.
You are looking to be in this step of the mortgage process on day 11-12 from the day you have signed the contract.