Per Project is an endorsement that changes how the General Liability limits apply to the work you are doing. If the General Liability limits are Per Project, then that means the limits listed for your General Liability are applied for every single project you work on. Claims can be made up to the policy limits for every separate project you work on.
Construction and Cleaning businesses that use subcontractors and carry Subcontractor Coverage can add Per Project Coverage to their General Liability policy during the quote process.