How to build a Porch Planter Box

Transform your porch with my step-by-step guide to building a stylish DIY porch planter box with your house number. This is a great way to elevate your porch. Even better, it’s a simple project that can be done in 1 day. I came across a similar unfinished style while out shopping so it inspired me to make one myself. This is a perfect beginner level project so don’t be intimidated at all if this is your first time trying a woodworking project.

I purchased my wood & supplies from Home Depot. Here’s what you need:


  • 1 x 12 x 8 ft long common board wood
  • Paint of your choice
  • Stain (I used Minwax in Ebony)
  • Trim moulding (optional)
  • Wood glue
  • House Numbers (Can be purchased from Home Depot, Lowes, Amazon, etc)
  • Spray paint (not necessary if you purchase house numbers in the color you want)
  • Miter Saw (HD or Lowes will can do most -or all depending on your store- of the cuts for you
  • Brad Nailer and nails (1-1/4 or 1-1/2 inch long)
  • Wood filler (to fill the nail holes before painting)
  • Hand or electric sander


  • You will cut your 1×12 into the following:
  • 1 piece @ 4 ft
  • 3 pieces @ 11-1/4″ wide x 12″ high
  • 1 piece @ 11-1/8 x 9-3/4″


  1. First step is assembling the planter box. You will to get your three 11-1/4″ pieces and attach them to each other as pictured below. Remember, to make sure the pieces line up.
  2. Be sure to use wood glue on edges then secure using your brad nailer. Put a good number of nails in it.
  3. Next add your bottom to the box by attaching the 11-1/8 x 9-3/4″ piece of wood. Use glue for that as well and attach on 3 sides with brad nailer.
  4. Once box is done, you should have an open side.
  5. Fill all your nail holes using wood filler, sand down then paint your planter box.
  6. If you’re using moulding trim, paint that the same color.
  7. Stain your 4ft piece of wood. This is the piece you’ll add the numbers to.
  8. Now, it’s time to attach the planter box to the 4 ft piece with nail gun. Use wood glue and attach as shown below:
  9. Once the box is attached to your stained 4 ft piece of wood, you will add moulding trim around the edges if you choose. I did miter cuts on my trim but it’s not necessary. See below:
  10. Add your numbers and your flowers/plant and you’re all done!

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