10×12 Greenhouse Plans

This step by step diy project is about 10×12 greenhouse plans. I have designed this greenhouse with a gable roof, so you can grow your own vegetables in an organic system. This greenhouse features a door on the front and side vents. Take a look over the rest of my woodworking plans, if you want to get more building inspiration.

When buying the lumber, you should select the planks with great care, making sure they are straight and without any visible flaws (cracks, knots, twists, decay). Investing in cedar or other weather resistant lumber is a good idea, as it will pay off on the long run. Use a spirit level to plumb and align the components, before inserting the galvanized screws, otherwise the project won’t have a symmetrical look. If you have all the materials and tools required for the project, you could get the job done in about a day. See all my Premium Plans HERE.



Projects made from these plans




10×12 Greenhouse Plans




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  • A – 2 pieces of 4×4 lumber – 144″ long, 2 pieces – 120″ long BASE
  • B – 8 pieces of 2×3 lumber – 16″ long STAKES
  • C – 2 pieces of 2×4 lumber – 144″ long, 7 pieces – 81″ long SIDE WALL
  • C – 2 pieces of 2×4 lumber – 144″ long, 7 pieces – 81″ long, 4 pieces – 22 1/2″ long SIDE WALL
  • D – 2 pieces of 2×4 lumber – 113″ long, 6 pieces – 81″ long FRONT & BACK WALL

  • 2 pieces of 4×4 lumber – 10′
  • 2 pieces of 2×3 lumber – 8′
  • 2 pieces of 4×4 lumber – 12′
  • 4 pieces of 2×4 lumber – 12′
  • 2 pieces of 2×4 lumber – 10′
  • 27 pices of 2×4 lumber – 8′
  • 2 1/2″ screws, 3 1/2″ screws, 1 5/8″ screws
  • 4d nails, 16d nails
  • wood filler , wood glue, stain/paint

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 Hammer, Tape measure, Framing square, Level

 Miter saw, Drill machinery, Screwdriver, Sander

 Safety Gloves, Safety Glasses

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 One day

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Building a 10×12 Greenhouse

Building the skids

Building the skids

The first step of the project is to build the skids for the greenhouse. As you can see in the diagram, you need to cut the 4×4 beams at the right dimensions. Moreover, make parallel cuts to both ends of the beams using a circular saw set at 1 3/4″ depth. Use a chisel to remove the excess and then smooth the surface with 120-220 grit sandpaper.

Assembling the base of the greenhe

Assembling the base of the greenhouse

Select the location for the greenhouse, making sure it will get plenty of sunlight for at least 8 hours every day. Remove the vegetation layer and then level the surface thoroughly, so you can fit the skids into place tightly. Make sure the corners are square and secure them beams together with 3 1/2″ screws, after drilling pilot holes.

Fitting the stakes

Fitting the stakes

Build stakes from 2×3 lumber, so you can anchor the greenhouse into place tightly. Cut the tip of the 2×3 stakes in a V-shape and then secure them to the base, as shown in the diagram. Use 2 1/2″ screws to secure the stakes to the base tightly.



Use 2×4 lumber for the back wall of the greenhouse. Cut the components at the right dimensions and then lay them on a level surface. Drill pilot holes through the plates and then insert 3 1/2″ screws into the studs. Place the studs every 24″ on center and make sure the corners are square. Align the edges flush.



Continue the project by assembling the side walls for the greenhouse, using the same techniques described above. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 24″ on center for a professional result.

Side wall with windows

Side wall with windows

Fit the 2×4 supports to the opposite side wall, so you can frame the vents.



Frame the front wall in the same manner described above, making sure you leave enough room for the door opening. Take accurate measurements for a professional result.

Assembling the frame of the shed

Assembling the frame of the shed

Fit the wall frames to the base of the greenhouse and align the edges flush. Use a spirit level to plumb the walls, drill pilot holes through the bottom plates and insert 3 1/2″ screws into the base. Moreover, you need to lock the adjacent walls together tightly with 2 1/2″ screws. Make sure the corners are square and align the edges flush for a professional result.

10x12 Greenhouse Plans - Side view

10×12 Greenhouse Plans – Side view

You really need to take a look over PART 2 of the project, so you learn how to build the door, the vents and how to attach the trims, so you lock the greenhouse plastic locked into place.

10x12 Greenhouse Plans

10×12 Greenhouse Plans

This is a simple project you should be able to build in a few days without much effort. This greenhouse has a compact size so this is really exactly what you need if you plan to grow your vegetables.



This woodworking project was about 10×12 greenhouse plans free. If you want to see more outdoor plans, check out the rest of our step by step projects and follow the instructions to obtain a professional result.




One Response

  1. Richard Brown

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