Pergola / Gazebo Material Calculator

Estimate all the lumber, hardware, and total cost for building a pergola or gazebo. Compare pressure-treated, cedar, and vinyl/PVC materials.

Length (ft)

Width (ft)

Height (ft)

Rafter Spacing (in)

Post Pricing (edit to match local rates)

PT 6x6 Post ($)

Cedar 6x6 Post ($)

Vinyl Post Sleeve ($)

Beam Pricing — Doubled 2x10/2x12 (per board)

PT 2x10 ($)

Cedar 2x10 ($)

Vinyl Beam ($)

Rafter & Purlin Pricing (per piece)

PT 2x6 Rafter ($)

Cedar 2x6 Rafter ($)

Vinyl Rafter ($)

PT 2x2 Purlin ($)

Cedar 2x2 Purlin ($)

Vinyl Purlin/Slat ($)

Hardware Pricing

Post Base ($/each)

Beam Hanger ($/each)

Lag Bolt ($/each)

Pergola Structure

Posts

4 posts

10 ft tall (8 ft above grade + 2 ft embedded)

Beams

4 boards

2 doubled beams along the length

Rafters

7 rafters

Spanning 10 ft width, 24" OC

Purlins / Slats

11 purlins

Spanning 12 ft length, 12" OC

Hardware

32 pcs

4 post bases, 4 hangers, 24 lag bolts

Best Total Cost

$544.00

Pressure-Treated

Purchase Option	Quantity	Est. Cost
Pressure-TreatedBest value	4 posts, 4 beams, 7 rafters	$544.00
Cedar	4 posts, 4 beams, 7 rafters	$928.00
Vinyl/PVC	4 posts, 4 beams, 7 rafters	$1,395.00

Cheapest option: Pressure-Treated at $544.00This total includes posts, doubled beams, rafters, purlins, and all structural hardware for a 12 ft x 10 ft pergola. Pressure-treated lumber is the most budget-friendly choice. It resists rot and insects but will need staining or sealing for appearance and should weather/dry for a few months before finishing.

This is a material estimate only. Actual lumber counts depend on available lengths, local spans tables, and your specific design. Always consult local building codes and consider wind/snow loads for your region.