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10×10 Backyard Pergola Plans with Built-In Bench

A freestanding 10′ × 10′ pergola with four 4x4 posts, doubled 2x6 beams, 2x6 rafters and 2x4 shade purlins, plus side rails and a built-in bench. Everything is cut from standard 8′ to 12′ boards.

124″ W × 120″ D × 104″ H58 pieces136 screwsGarden
Open & customize in 3D (free)→Sample PDF plan
3D model of the 10×10 backyard pergola
10′ × 10′ outdoor timber pergola: four 4x4 posts with 3-sided plinth boots, doubled 2x6 support beams & side headers, timber corbel bolsters, two-tier side guardrails, center-supported bench, nine 2x6 rafters, and nine 2x4 shade purlins.

Cut list

Identical pieces are grouped. Lengths are finished lengths in inches.

QtyMaterialSizeCutsPieces
4×4x4102″Square (90°)Posts
14×2x43.5″Square (90°)12× Post Base Cleats2× Bench Post Cleats
17×2x6120″Square (90°)4× Beams4× Headers9× Rafters
4×2x616″Square (90°)Support Bolsters
4×2x487.5″Square (90°)Rails
2×2x680.5″Square (90°)Bench Slats
3×2x411″Square (90°)Bench Cleats
1×4x418″Square (90°)Bench Post
9×2x4124″Square (90°)Shade Purlins

Lumber shopping list

Board counts are optimized from standard stock lengths and include a 1/8″ saw kerf per cut.

Tools you need

Assembly steps

  1. Corner Posts & Base Plinths
    4× Post (4x4, 102″) 8× Post Foot (2x4, 3.5″) 4× Post Foot Side (2x4, 3.5″)
  2. Main Support Beams
    2× Outer Beam (2x6, 120″) 2× Inner Beam (2x6, 120″)
  3. Side Headers & Built-in Bench
    2× Side Outer Header (2x6, 120″) 2× Side Inner Header (2x6, 120″) 4× Support Bolster (2x6, 16″) 4× Side Rail (2x4, 87.5″) 1× Back Bench Front Slat (2x6, 80.5″) 1× Back Bench Rear Slat (2x6, 80.5″) 3× Bench Cleat (2x4, 11″) 1× Bench Center Post (4x4, 18″) 2× Bench Post Foot (2x4, 3.5″)
  4. Roof Rafters
    2× Post Rafter (2x6, 120″) 2× Far Overhang Rafter (2x6, 120″) 3× Rafter (2x6, 120″) 2× Inner- Rafter (2x6, 120″)
  5. Top Shade Purlins
    9× Shade Purlin (2x4, 124″)
Want 3D diagrams for every step, board cutting layouts and screw placements? Open this plan in BenchBuild to modify the 3D model, change any dimensions or add pieces, and your cut list updates instantly.

FAQ

How much lumber do I need for this 10×10 backyard pergola?

4× 4x4 × 10′, 1× 4x4 × 8′, 9× 2x4 × 12′, 4× 2x4 × 8′, 17× 2x6 × 10′, 3× 2x6 × 8′. That is 38 boards in total, optimized from standard stock lengths with a 1/8″ saw kerf.

What screws should I use?

The plan uses 136 wood screws (2-1/2″). Use exterior-rated screws for outdoor builds.

Can I customize or modify this plan?

Yes. Open it in the free BenchBuild 3D studio to freely modify the model, resize parts, add pieces, or change lumber dimensions. Your cut list, board count and cost estimate update automatically.

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