You will need proper sized footings, posts, floor blocking, and trimmer (jack) studs, plus possibly metal strapping (top plates to beam), and a permit as this is a structural change. The paper trail is nice for your H.O. Insurance carrier and when you sell.
P.S. Welcome to the forums!
Clothes taking longer to dry?
Clean the dryer screen in HOT water if using fabric softener sheets.
They leave a residue that impedes air-flow, costing you money.
Clean the ducting in the last six months? 17,000 dryer fires annually!