Build a deck and screen porch into the same footprint as the existing deck
Remove existing back deck and build an 18' x 27' back deck. Build an attached 15' x 20' screen porch
Remove the existing back deck. Build a new screen porch using the same footprint at the existing dec
Remove exisitng back deck and build a new deck/screen porch back into the same footprint as existing
Remove existing back deck Build a new 14' x 14' screen porch
Remove existing deck and stairs. Build back a smaller deck and relocate stairs