14×20 Lean to Shed Plans

This step by step diy project is about 14×20 lean to shed shed plans. This large lean to shed is ideal for storing large items, such as lawn mowers, tools, bikes and other items. This shed features a large 8′ roll up door to the front and a side man door to the side. Make sure you comply with the local codes before staring the project. 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. See all my Premium Plans HERE.

Projects made from these plans

14×20 Lean to Shed Plans

Building-a-14×20-lean-to

Cut List

• A – 5 pieces of 4×4 lumber – 240″ long SKIDS
• B – 2 pieces of 2×6 lumber – 240″ long, 16 pieces – 165″long FLOOR
• C – 6 pieces of 3/4″ plywood – 48″x96″ long, 3 pieces – 48″x48″ long, 2 pieces – 24″x96″ long, 1 piece – 24″x48″ long FLOORING
• D – 2 pieces of 2×4 lumber – 72″ long, 1 piece – 233″ long, 1 piece – 240″ long, 16 pieces – 86 1/2″ long, 2 pieces – 78 1/2″ long, 5 pieces – 2 1/2″ long, 2 pieces of 2×6 lumber – 99″ long FRONT WALL
• E – 2 pieces of 2×4 lumber – 240″ long, 18 pieces – 23 3/4″ long TOP FRONT WALL
• F – 1 pieces of 2×4 lumber – 22 3/4″ long, 1 piece – 102 1/4″ long, 1 piece – 161″ long, 1 piece – 168″ long, 11 pieces – 86 1/2″ long, 2 pieces – 78 1/2″ long, 7 pieces – 2 1/2″ long, 2 pieces – 31″ long, 2 pieces – 42″ long, 4 pieces of 2×6 lumber – 27″ long, 2 pieces – 39″ long SIDE WALL 
• G – 2 pieces of 2×4 lumber – 161″ long, 1 piece – 168″ long, 12 pieces – 86 1/2″ long SIDE WALL
• H – 15 pieces of T1-11 – 48″x91″ long, 2 pieces – 24″x91″ long, 1 piece – 11″x48″ long, 5 pieces – 48″x26 3/4″ long SIDING

Shopping List

• 5 pieces of 4×4 lumber – 20′
• 2 pieces of 2×6 lumber – 20′
• 16 pieces of 2×6 lumber – 14′
• 9 pieces of 3/4″ plywood – 4’x8′
• 7 pieces of 2×4 lumber – 20′
• 6 pieces of 2×4 lumber – 14′
• 66 pieces of 2×4 lumber – 8′
• 4 pieces of 2×6 lumber – 10′
• 19 pieces of T1-11 – 48″x96″
• 6d nails, 2 1/2″ screws, 3 1/2″ screws
• wood filler , wood glue, stain/paint

Tools

 Hammer, Tape measure, Framing square, Level

 Miter saw, Drill machinery, Screwdriver, Sander

 Safety Gloves, Safety Glasses

Time

One week

Related:

• PART 1: 14×20 Shed Plans
• PART 2: 14×20 Shed Roof Plans
• PART 3: 14×20 Lean to shed doors Plans
• 14×14 Lean to shed plans

14×20 Shed Plans

Floor frame

First of all, you need to build the floor frame for the 14×20 lean to shed. Cut the joists from 2×6 lumber at the dimensions shown in the diagram. Lay the joists on a level surface and then align the edges flush. Make sure the corners are square and then drill pilot holes through the rim joists. Insert 3 1/2″ screws to lock the components together tightly.

Fitting the skids

Select the location for the shed, making sure you comply with the local codes. Remove the vegetation layer and then level the surface with attention and then fit the 4×4 skids. Lay the floor frame and then use rafter ties to lock the components together tightly.

Fitting the floor sheets

Lay the 3/4″ plywood sheets to the floor frame. Align the edges flush and leave no gaps between the components. Insert 1 5/8″ screws, every 8″ along the framing. Make cuts to the 24″ plywood sheets.

Building the shed wall frames

Front-wall-frame

Continue the outdoor project by assembling the front wall frame. cut all the components at the right dimensions, as shown in the diagram. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 16″ on center, making sure the corners are square. Use 2×6 lumber for the double header, as well as 1/2″ plywood. You can adjust the size of the door opening to suit your needs.

Top front wall frame

Use 2×4 lumber for the top front wall frame. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 16″ on center and make sure the corners are square.

Back-wall-frame

Build the back wall frame for the shed, using the same techniques described above.

Plain-side-wall-frame-plans

Continue the projects by assembling the plain side wall. Cut all the components at the right dimensions and then lay them on a level surface. Drill pilot holes through the plates and insert 3 1/2″ screws into the studs. Place the studs every 16″ on center and make sure the corners are square.

Side-wall-frame

Use 2×4 lumber for the other side wall frame, as well. Cut the components at the right dimensions, as shown in the diagram. Moreover, use 2×6 lumber and 1/2″ plywood for the double headers. Drill pilot holes through the plates and insert 3 1/2″ screws to secure the studs. You can adjust the size of the man door opening, to suit your needs.

Assembling the shed frame

Assembling the shed frame

After assembling the wall frames, you need to lock them together tightly. Fit the wall frames to the floor and then align the edges flush. Drill pilot holes through the bottom plates and insert 3 1/2″ screws into the floor. Make sure the corners are square and plumb the walls with a spirit level. Lock the adjacent walls together tightly with 2 1/2″ screws, after drilling pilot holes.

Fitting the siding sheets

Other side wall siding

Fit T1-11 siding sheets to the sides of the shed. Align the edges with attention and then insert 6d nails, every 8″ along the framing. Leave no gaps between the sheets for a professional result.

Side wall siding

Fit the siding sheets to the opposite side of the shed, as well. Make cuts to the sheets so you can fit them around the door and window openings. Insert 6d nails every 8″ along the framing.

Back wall siding

Fit the T1-11 siding sheets to the back of the shed. Align the edges and use 6d nails.

Front wall siding

Fit the T1-11 siding panels to the front of the shed, as well, using the same techniques described above.

Finishing touches

14×20 Lean to shed Plans – back view

This shed has a nice looks. The decorative trims add character to the project, as you will see in PART 2 and PART 3.

14×20 Lean to shed Plans

I have lots of other shed projects on the site so I recommend you to browse through all alternatives before starting the building project. See all my shed projects HERE. Moreover, check out PART 2 and PART 3 of the shed, so you learn how to build the roof and the double front doors.

14×20 Lean to shed – dimensions

Building a 14×20 lean-to shed with a garage door, side door, and side window will likely cost you between $5,000 and $8,000, depending on the materials and finishes you select. The larger size, combined with the garage door, adds to the cost, but it provides ample space for storing larger equipment, a vehicle, or even setting up a workshop. The side door and window enhance both accessibility and natural light, making the shed more functional and inviting.

14×20 lean to shed plans

You can expect to spend about 3 to 5 weekends constructing your 14×20 lean-to shed with a garage door, side door, and side window. The project requires careful planning, especially for the installation of the garage door and ensuring proper framing for the side door and window. With consistent effort and attention to detail, you’ll end up with a solid, well-designed shed that’s both practical and aesthetically pleasing.

How to build a 14×20 lean to shed

As you finish your 14×20 lean-to shed with a garage door, side door, and side window, you’ll have created a versatile and spacious structure that greatly enhances your property. The garage door provides easy access for larger items or vehicles, while the side door and window bring in natural light and make the space more accessible and user-friendly. This shed is more than just a storage solution, it’s a well-thought-out addition that combines functionality with style, ready to meet your needs and add value to your outdoor space for years to come.

If you want to get this project as a PDF file, with 1 full Cut and 1 full Shopping list, please take a look over the GET PDF PLANS button bellow.

This woodworking project was about 14×20 shed 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.

- EXPLORE MORE IDEAS FOR -