How do you make a door entrance smaller? Using a drill with a ¼-inch drill bit, screw the furring onto the frame. Attach the jamb pieces to the frame and insert the shims to help level the door. Nail off the jambs with 2-inch nails. If the gap was shorter than 1-inch, you can attach the old casing back to the frame.
What do you do if your door is too wide? If a door is just a little bit too wide, remove the hinges and trim the hinge-side stile only. But if you have to trim off both sides, you’ll have to reposition the latching hardware. Remember to leave a 1/8-inch gap at the top and each side of the door, and a 1/4-inch gap at the bottom.
How much does it cost to resize a door? On average, it can cost about $600-$2,500 and up to widen a door fully. When you factor in the costs of having to move electrical wires and other components, that price can substantially increase.
Can you cut a door frame to size? Mark the lengths from your door frame on the thinnest edges of 3 trim pieces. Get enough trim pieces so you’re able to cut the pieces to size to fit around the door frame. Extend your tape measure to the same lengths as your measurements so you can draw lines on the trim.