Free porch plans are available at many websites, including Lowe's, TimberTech and Backyard Spaces. Lowe's presents very detailed instructions on how to design and construct a porch, as well as a list of tools and materials needed to complete the project. The website also has a free tool for designing porches.
TimberTech has 100 free deck plans available. Site visitors can filter plans by the number of levels in the deck, its shape, number of staircases and extra features such as dining, hot tub, lounge and grilling areas. Users can download deck plans and open them in a deck designer to make changes. Each deck plan includes pictures of the deck from different angles and a diagram identifying all main parts of the deck. Each plan also features a structural connector hardware guide, a list of necessary tools and materials, and a guide on how to construct the deck.
Backyard Spaces features a collection of links to websites that have some free porch plans available, including plans for screened-in porches. The website also hosts plans of porch railings, steps, roofs and columns. In addition, it features guides on how to install screens, build decks, create roof framing, and build and replace columns of different styles.