The best replacement for porch is patio.

The best alternatives to porch are rated as following:
★★★★★  patio
★★★★  deck
★★★  balcony
★★★  lanai
★★  veranda
★  porch
★  stoop
★  sunroom
★  patio difference
★  portico
★  wood porch
★  verandah
  vestibule
  pergola
  houzz
  4 season porch
  foyer

Your alternative for porch is not listed? Suggest!
Speaking about porch, one probably shouldn't forget about shed roof.

Other search terms related to porch and their ratings are:
★★★★★ shed roof
★★ hip roof
★★ gable roof
deck
You have in mind a companion for porch and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of porch in all years. Click on graph for more.
porch
patio
deck