The decision to replace doors and windows in a commercial building would depend on the condition of the existing doors and windows, as well as any specific requirements outlined in the building code, safety regulations, or lease agreement.

If the doors and windows are damaged, outdated, or not up to code, then they may need to be replaced before the building can be occupied or to meet safety standards. Additionally, if the tenant or owner has specific requirements for the doors and windows, such as a particular style or type of glass, they may request that they be replaced.

However, if the existing doors and windows are in good condition, meet safety standards, and fulfill any requirements in the building code or lease agreement, then they may not need to be replaced.

In summary, the decision to replace doors and windows in a commercial building would depend on the specific circumstances and requirements of the building and its occupants.