DIY Cantilever Pergola Plans: 14x20 Large 3-Post Wood Blueprint PDF

DIY cantilever pergola plans for a 20' x 14' freestanding wood pergola on three center posts with braced T-arms and no corner posts. Instant PDF download with cut list.

- Product: DIY cantilever pergola plans, 20' x 14' (14x20) freestanding wood pergola on three center posts with no corner posts
- Format: Digital PDF download
- Pages: 23
- Paper Size: US Letter
- Units: Imperial (feet and inches); main cut lengths also in mm
- Dimensions: 19' 11-1/2" x 13' 10" slatted roof (about 276 sq ft of shade), 8' 2-3/4" clear under the cross arms, 9' 8-3/4" to the top of the roof
- Cantilever: The roof reaches 6' 11" to the front and to the back of the post line, with no posts at the edges, so all four sides are open
- Structure: Three 8x8 posts in one center row, 96" on center, set 60" deep in 24" concrete footings; a pair of 2x10 cross arms bolted through each post
- Bracing: Six 4x8 arm knee braces that make each post a T, plus a 2-ply 2x8 spine on the post tops with four 4x4 spine braces
- Roof: Six 2x8 runners 30" on center and 40 2x4 slats laid flat at 6" on center
- Style: Modern T-shaped cantilever pergola with a two-tone finish
- Materials: Pressure-treated lumber, 8x8 ground-contact posts
- Finish Shown: Dark walnut stain on the posts, arms, braces and spine; golden cedar stain on the runners and slats
- Skill Level: Intermediate to advanced
- Build Time: About 5-6 working days plus concrete curing; three people for the posts, the spine and the runners
- Includes: Shopping list, master cut list, cut diagrams, cross arm and bolting templates, runner, spine and knee brace templates, end elevation, front elevation, framing plan, 8 illustrated steps, 3D renderings
- Best For: DIY builders who want a large open patio pergola with no corner posts in the way of furniture
- Delivery: Instant PDF download after purchase, no physical item shipped

## What's Included in These Cantilever Pergola Plans

This 14x20 pergola plan stands the whole roof on three posts in one row. Each post carries a pair of cross arms that reach out to the front and the back, and two knee braces under the arms turn every post into a T. A spine on the post tops ties the row together, and runners and slats complete the open roof.

- Overview and specifications page with all key heights and sizes
- Tools list, lumber size chart and footing notes
- Shopping list for lumber, bolts, hurricane ties, screws, concrete and stain
- Master cut list and cut diagrams for every board
- Cross arm template with the bolting layout
- Runner, spine and knee brace templates
- Dimensioned end elevation, front elevation and framing plan
- 8 illustrated build steps with tips and checks
- Finishing, care and common questions page
- 3D renderings of the finished pergola from six views

## Large Pergola Blueprint Format and Units

The pergola blueprint is a 23-page PDF on US Letter paper. All dimensions are in feet and inches to 1/16" precision, and the main cut lengths are also given in millimeters. Drawings are not to scale, so you always build from the written dimensions.

## Who This 3 Post Cantilever Pergola Is For

These freestanding pergola plans suit experienced DIY builders. You need a level area of about 26' x 20' that a concrete truck or wheelbarrows can reach, a rented power auger for the 24" holes and a crew of three. With no corner posts, a lounge set can go on one side of the post line and a dining table on the other.

## How to Use the Cantilever Pergola Plans

1. Buy the plan and download the PDF.
2. Print it or open it on a tablet or computer.
3. Check local zoning and permit rules, and have your building department or a local engineer check the posts and footings for your wind and soil.
4. Buy the lumber and hardware from the shopping list.
5. Follow the 8 steps, writing the part ID on every part as you cut it.

## Digital Product Note

This is a digital PDF plan. No physical item is shipped, and no lumber or hardware is included. The file is ready to download right after purchase. Spring is the busiest building season, so fall and winter are a good time to plan a cantilever pergola and arrange the footing check.

## Terms of Use

This plan is for your personal use. You may build as many pergolas as you like for your own property. You may not resell, share or publish this PDF or its drawings.

## Frequently Asked Questions

### How do I download the PDF after purchase?

After checkout you get a download link on the order confirmation page and by email. Click the link to download the cantilever pergola plans PDF.

### How far can you cantilever a pergola?

This cantilever pergola reaches 6' 11" to the front and back of the post line on braced 2x10 cross arms. Do not lengthen the arms, because the posts and footings are sized for this reach.

### How do you build a cantilevered pergola?

You build this cantilevered pergola by setting three 8x8 posts 60" deep in concrete, bolting a pair of braced cross arms through each post, and adding a spine, runners and slats on top. The 8 illustrated steps cover each stage.

### Is it cheaper to build or buy a pergola?

Building a pergola from plans lets you buy lumber locally at your own prices instead of paying for a pre-built kit. The shopping list in this PDF lets you price the full build before you start.

### Can I add a solid roof or shade sails to this cantilever pergola?

No, a covering would catch wind and load this cantilever pergola far more than it is designed for. Keep the open slat roof as drawn.

## More Building Plans from KRMPLANS

Browse the KRMPLANS shop for more pergola, carport, cabin and chicken coop plans. If you have a question about this plan before or after you buy, send us a message and we will be happy to help.