- Take out existing window.
- Take out drywall around window on the inside.
- Put up a support beam on the inside (shown above)
- Have plumbing rerouted.
- Have electrical lines moved.
- Put header in.
- Add 2×4 framing.
- Tack up plywood on the inside to protect kitchen.
How much does it cost to change window size?
The typical window replacement cost is between $200 and $1,800 per window, and the national average is around $100 to $650 per window, depending on window frame material and glass type, among other factors. Labor adds to the overall window replacement cost and can run approximately $100 to $300 per window.Sep 21, 2021
How do I enlarge an existing window?
- Take out existing window.
- Take out drywall around window on the inside.
- Put up a support beam on the inside (shown above)
- Have plumbing rerouted.
- Have electrical lines moved.
- Put header in.
- Add 2×4 framing.
- Tack up plywood on the inside to protect kitchen.
How much does a big window cost?
Large window prices vary from $800 – $3000 per new window. With the average cost per new large window being $800 – $2000 , the price of large windows for an average house would be between $7,000 – $40,000. Large window prices depend on the glazing, frame material, hardware, and size.