How Much Does a Pergola Cost?
Answer the question "how much does a pergola cost?" for your exact backyard: enter the pergola size, pick a material, choose DIY or professional installation, and add popular extras. The calculator below returns an estimated cost range instantly — no sign-up, no email.
Enter your numbers
Measure the footprint of the finished structure in feet — a 12×12 ft pergola is 144 sq ft.
Your results
| Item | Value |
|---|---|
| Pergola footprint | – |
| Material rate (installed) | – |
| Installation | – |
| Mounting style | – |
| Base structure cost | – |
| Add-ons | – |
All rates are national-average planning estimates — local labor prices, site conditions, and permit fees can shift the final cost. Get at least two local quotes before you budget.
How to use this calculator
Enter the length and width of your planned pergola in feet. A 12×12 ft structure — one of the most common sizes — covers 144 square feet. If you are still deciding, start with that size and adjust up or down to see how the cost moves.
Pick a material using the quick-select buttons. Pressure-treated wood is the cheapest installed option, cedar costs more but resists rot naturally, vinyl is low-maintenance, and aluminum or fiberglass sits at the premium end. Then choose DIY kit or professional installation, and freestanding or attached-to-house mounting. Freestanding pergolas need more posts and footings; attached ones save about 10%.
Tick any add-ons you want — a retractable shade canopy or an LED lighting package are the two most popular upgrades. Results update instantly as you change anything, showing a cost range plus a midpoint estimate to use for budgeting.
How it works
The math is straightforward. First the footprint: area = length × width (square feet). The base structure cost is area × material rate × installation multiplier × mounting multiplier, computed at both the low and high end of the material rate to form a range.
Worked example: a 12×12 ft cedar pergola is 144 sq ft. Cedar installed runs $25–$45/sq ft, so with professional installation and freestanding mounting the base range is 144 × $25 = $3,600 to 144 × $45 = $6,480. At the midpoint rate of $35/sq ft that lands at about $5,040 — squarely in the typical $4,500–$7,000 band for a 12×12 cedar pergola.
Add-ons are flat ranges added to both ends of the base: a shade canopy adds $500–$1,000 and lighting adds $300–$800. The DIY multiplier is 0.55 (roughly 45% savings on labor and contractor markup), and attached mounting applies a 0.9 multiplier (roughly 10% savings on posts and footings).
Assumptions and limits: material rates are national-average installed prices and are labeled as estimates throughout. Permit fees ($100–$500 where required), site prep such as grading or an old-structure teardown, and sales tax are not included. The DIY multiplier assumes a kit with pre-cut parts — scratch-built lumber projects vary more.
Frequently asked questions
How much does a pergola cost?
Most pergolas cost between $2,000 and $8,000 installed. A popular 12×12 ft cedar pergola typically lands around $4,500 to $7,000 with professional installation, while small DIY pergola kits start under $1,500 and large custom aluminum or fiberglass builds can pass $10,000. These are planning estimates — always get at least two quotes from local contractors before you budget.
Is a DIY pergola kit cheaper than hiring a professional?
Yes. Building from a DIY pergola kit usually costs 40 to 50 percent less than hiring a contractor, because you skip labor charges and the contractor markup on materials. This calculator applies a 0.55 multiplier for DIY builds. You will still need tools, concrete for the footings, and at least one helper — and any freestanding pergola must be anchored properly to handle wind loads.
Does cedar cost more than pressure-treated wood for a pergola?
Yes. Installed cedar runs about $25 to $45 per square foot, compared with $15 to $30 per square foot for pressure-treated wood. Cedar resists rot and insects naturally and weathers to an attractive silvery gray, which is why many homeowners pay the premium — but pressure-treated lumber is the budget-friendly workhorse and lasts well when sealed regularly.
Is an attached pergola cheaper than a freestanding one?
Usually, yes — by roughly 10 percent. An attached pergola bolts to the house on one side, so it needs fewer posts, footings, and concrete. A freestanding pergola carries all of its own weight, which means four to six posts and footings. This calculator applies a 0.9 multiplier for attached pergolas to reflect those savings.
Do I need a permit to build a pergola?
Often, yes. Many cities require a building permit for structures over 100 to 120 square feet or taller than 10 to 12 feet, and some neighborhoods add setback or HOA rules on top of that. Permit fees are usually $100 to $500 and are not included in this estimate. Check with your local building department before you buy materials.