Must Landlord Pay for IAQ Improvements Required for Tenant’s Proposed Use?

SITUATION: Just before the pandemic hit, a landlord agreed to lease one floor and the basement of a three-story building previously used for warehousing to a lumber and leather goods store. Although the landlord had to shutter the property temporarily, the deal remained on track. Now the landlord has gotten official permission to reopen, and the tenant is prepared to move in.