Pergola Installation Cost 2026: Full Price Breakdown

I price pergola installs for a living, so let me show you the actual math. The reason two quotes for the "same" pergola can differ by thousands isn't usually dishonesty — it's that different contractors include different line items. Here's the full breakdown, the way it appears on my own invoices.

The Materials Line: What the Structure Itself Costs

Material choice sets the baseline before anything else happens.

Pressure-treated lumber runs $15–$30 per square foot of roof area and suits the classic open-frame look. Cedar sits at $25–$45 per square foot — better grain, better weathering, and the smell everyone remembers. Vinyl systems run $20–$40 per square foot with genuinely zero maintenance. Powder-coated aluminum costs $30–$60 per square foot, and steel-framed custom work can exceed $70.

For a 10×12 foot structure, that puts materials alone at $1,800–$3,600 in treated lumber, or $3,600–$7,200 in aluminum before a single screw is turned.

The Foundation Line: The Part Everyone Underestimates

A pergola is only as permanent as what holds it up. Every post needs a concrete footing below the frost line — 24 to 42 inches deep depending on your climate — and each footing takes roughly $100–$200 in concrete, forms, and rebar. A four-post structure: $400–$800 in materials plus the labor to dig and pour, which brings the foundation line to $800–$2,000 on most residential jobs.

Skipping this is how pergolas lean by year three. I've straightened enough of them to say that plainly.

The Labor Line: Days, Not Hours

Installation labor runs $500–$1,000 per day for a two-person crew depending on region. A straightforward kit on prepared ground takes one to two days. An attached pergola with ledger mounting and house flashing takes two to three. Custom steel or heavy timber work can stretch to a week.

Realistic labor totals: $1,000–$3,000 for kits, $3,000–$6,000 for custom builds.

The Costs Quotes Leave Fuzzy

Four items that appear as fine print — or don't appear at all:

• Site prep and demolition. Removing an old structure or leveling a slope: $300–$1,500.
• Disposal. Hauling away soil, packaging, and debris: $150–$400.
• Permits. Many open structures are exempt, but attached builds and anything over roughly 40 square meters often need approval: $0–$500 plus waiting time.
• Electrical. The moment you want lights, outlets, or a motorized roof, a licensed electrician adds $500–$2,000 for the run, the breaker, and weatherproof fixtures.

Size and Attachment Multipliers

Cost scales with roof area, but not linearly. Posts and footings dominate small builds, so a 10×10 costs $4,000 while a 12×16 costs $8,000–$9,000 — less than double the size, but a bit more than double the price. Attached structures add flashing and ledger work but can drop one post line and some footing cost; freestanding builds need full four-corner engineering but simplify permits in many areas.

A Real Invoice, Itemized

For a 12×14 cedar pergola, attached, with two overhead lights, my last quote read: materials $4,900, footings $1,100, labor $2,400, electrical $850, permit $180, disposal $200 — $9,630 total. When you collect quotes, ask each contractor to break theirs out the same way. The one who refuses is telling you something.