Order Online or Call 866.332.2403; Outside the US: 707.495.4955 7am-7pm Pacific Time, Monday-Saturday | View Cart View Cart

Large Pergolas

Please scroll down for more information and pricing.
12 x 12 Pergola with Lattice Roof - Mature Redwood

12'L x 12'W Pergola with Lattice Roof

Photo Shows Mature Redwood
Also shown is our Pergola Anchor Kit.
Click on the thumbnails below to see larger image:
12 x 10 Pergola - Mature Redwood 12 x 10 Pergola - Mature Redwood 12 x 12 Pergola - Mature Redwood 12 x 12 Attached Pergola Drawing 12 x 12 Pergola with Lattice Roof - Mature Redwood 12 x 12 Pergola with Lattice Roof - Mature Redwood Custom-Designed 12 x 12 Pergola with Matching Fence and Railing - Old-Growth Redwood 14 x 10 Pergola - Mature Redwood 14 x 12 Painted Pergola 15 x 12 Pergola - Mature Redwood 15 x 12 Pergola - Mature Redwood 15 x 15 Pergola - Mature Redwood 15 x 15 Pergola Roof Detail - Mature Redwood 15 x 15 Pergola Roof Detail - Mature Redwood 16 x 16 Pergola - Mature Redwood 16 x 16 Pergola - Mature Redwood 20 x 15 Pergola with Lattice Roof - Mature Redwood 16 x 14 Pergola with Lattice Roof and Privacy Screen - Drawing

Pergola Options

Anchoring Your Pergola

Anchor KitAll pergolas posts should be attached to the ground. If your set will be attached to an existing deck/patio/concrete slab, you can use metal "Simpson Ties" anchors from the local hardware store. Or, purchase our anchoring kit, which includes everything you need for $125: the metal anchors, lag bolts to attach the posts to the metal anchors, the anchor bolts to attach to the concrete, plus wood trim pieces and the deck screws to attach the trim to the base of the posts to cover the metal for a finished look. Click on the image at left for anchor kit photos and ordering instructions. If attaching to a wood deck, please let us know so we send lag bolts for the wood deck instead of anchor bolts for concrete or stone (make selection at checkout).

If you are building over undeveloped ground, you can do it in one of two ways:

  1. Dig 30" deep x 8" diameter holes with a post hole digger. Add cardboard Sono tubing and some rebar, then pour concrete (in snow areas go below the frost line). Attach metal anchors at the top of the concrete pour (to keep the posts out of the weather, pour the concrete about two inches above ground level) and, after drying, bolt the pergola posts to the tie. If you order the anchoring kit, the trim pieces will hide the metal ties at the base of the posts.
  2. If you order your pergola in our Mature Redwood (20-year decay warranty) or Old-Growth Redwood (30-year decay warranty), you can order your posts 12"L and bury them directly in the ground with concrete and some rebar. This is structurally stronger than attaching at ground level, but placing pergola posts underground is not recommended if ordering in Young Redwood or Douglas-fir, both of which will decay within 12 years in constant contact with the soil. The Mature and Old-Growth Redwood will be fine underground for decades. (Learn more about our wood grades.)

If you order the anchoring kit, you don't need anything from the hardware store if you are attaching to an existing deck. If going underground, just add the concrete and a bit of rebar.

Read more in our FAQ, including the best grade of wood to choose for your climate.

Pergola Roof Options

Pergola roofs can be ordered in several ways:
  • 15 x 15 Pergola with Standard Open Roof
    Standard Open Roof
    The standard open roof uses 1 3/4" x 1 3/4" roof slats spaced 18" apart on center (or slightly less depending on roof size so as to be equidistant from one another) with the rafters below it also spaced 18" on center or slightly less and running perpendicular to the roof slats.
  • Some customers prefer more shade— we can increase the amount of rafters and roof slats to make the spacing 12" apart instead. Pricing is higher to cover the added timber involved. You can preview this additional pricing and order your pergola with either the roof slats, roof rafters, or both slats and rafters at 12" apart during checkout.
  • 8 x 8 Pergola with Lattice Panel Roof
    Lattice Roof
    Another way to get more shade without spending more is to choose our lattice panel option. Lattice panels are built using high quality 3/16" x 1 3/4" slats with 1 3/4" x 1 3/4" openings and 1 3/4" x 1 3/4" framing. The panels sit between the rafters. Rafters are set at 24 inches on center when lattice panels are ordered. The lattice panel roof option is available during checkout for no additional charge.
15 x 15 Pergola with Standard Open RoofAll pergola roofs have 3 levels. The top level is either the 1 3/4" x 1 3/4" roof slats in the open roof designs or the lattice panels, depending on your choice. Below the top level are the roof rafters (either 2x4's for Small Pergolas or 2x6's for Large Pergolas) and the lowest level is the double roof support timbers (lintels). The roof support timbers are perpendicular to the roof rafters above them. We notch the roof support timbers to either side of each post for additional structural strength (there are 4 roof support timbers on a 4-post pergola).

The support timbers create 4" to 6" less clearance (depending on whether it is a Small or Large Pergola) when you walk underneath, so these two sides of the pergola are usually considered the "sides" of the pergola. The other two sides with the slightly taller ceiling are usually considered the entry and exit sides. You will be able to specify when ordering a rectangular shaped pergola whether you prefer your roof support timbers on the short length (widthwise) or the long length (lengthwise) of your pergola.

Lattice Privacy Panels

16 x 14 Pergola with Lattice Roof and Privacy Screen - DrawingYou can add privacy panels to your pergola for a small additional charge; see drawing at right. The lattice is 1 3/4"W slats with 1 3/4"W holes. There are several options in configuring the panels:

  • The panels are 48"H each. We can make them a different height if you require—please note that taller panels will require two stacked on top of each other, increasing the price. We'll contact you with a quote.
  • The panel(s) will be made long enough to fit between the posts (up to a 16' distance). You'll have the option of adding 1, 2, or 3 panels and choosing the long or short side(s), where applicable.
  • When you order the panel(s), please write in the provided comment box during checkout at what height from the ground you'd like the top of the panel(s) to be—we'll drill installation holes in the posts to achieve the height you specify. If no height is specified, we'll ship your posts without the holes so you can determine at installation.
  • You can also choose whether you'd like the lattice going vertical-horizontal or diagonal (same cost).

Attached or Stand-Alone

There is no extra charge for attached pergola projects. Pergola pricing is based on roof size. Attached and stand-alone pergolas of the same size are priced the same. Choose your preference in the shopping cart. If you would like an attached pergola, we will contact you to verify the details before finalizing your order.

Attaching Pergolas to Your House

All the hardware is included except the anchoring hardware for the ledger board you'll be attaching to your siding. Since we are not on site and don't know what will work best, we leave that for you to decide. If we do the installation for you, we usually use lag bolts every other framing timber (32" on center in most cases).

Standard Ledger Board vs. Custom Metal Anchors on Attached Pergolas

Custom Metal Anchor for Attached Pergola

Please note that the method of attaching the roof support timbers directly into a custom made metal anchor, as shown in the photo at right, is a variation on the standard method which uses a ledger board along the siding to hang or attach the rafter to. If you prefer to attach the pergola with our custom metal anchors, you'll need to locate the framing studs and give us the spacing so we can build the pergola around these dimensions. If you have any questions, just email or give us a call.

Custom Pergolas

15 x 25 Attached Pergola DrawingWe can make pergolas to fit just about any size requirement, and any pergola shown can be customized. Just give us a call or use our contact form to let us know what your vision is, or have your architect get in touch with us. For more information on the process for custom designs, read our FAQ entry that addresses one customer's questions about this and permits.

Pergola Questions?

Have questions about our pergolas? Need to know about customization options? See our Pergola FAQs.

Large Pergola Dimensions

Corner posts are 5 1/2" x 5 1/2" and are recessed 12" in from roof dimensions (This can be adjusted to meet your needs— contact us). Roof support timbers (lintels) and rafters are 1 7/8" x 5 3/4". Please contact us if you don't see exactly what you want.

Standard pergola posts ship 9-feet long. The 9' post height makes the top of the roof 9' also since the top roof timbers line up with the top of the post. It gives you 8' 4" clearance ("ceiling height") under the rafters. About 80% of our pergola customers go with the default 9' post height. We can change the post height if you'd like something a bit taller or shorter— just let us know.

The maximum roof span is 20 feet in either direction with a 4 post structure. The maximum span our design allows is 18' 6" on center between posts. Structures over 20 feet in any direction are built with an additional posts to support spans from 20 to 36 feet. For example, a 30' x 20' pergola will have a total of 6 posts.

Our Pergola kits are completely assembled in the shop prior to shipping to be certain everything fits together perfectly. All timbers are notched into one another to fit together tightly. There are hundreds of notches in the larger pergolas. Notching is a labor intensive process that results in a very strong "web effect" that distributes wind and weight stresses throughout the structure.

All hardware is included and it is stainless steel.

Pergola (Roof) Size in FeetApprox. Weight
10 x 10 705 lbs.
12 x 10 795 lbs.
12 x 12 903 lbs.
14 x 10 885 lbs.
14 x 12 1011 lbs.
14 x 14 1137 lbs.
15 x 10 930 lbs.
15 x 12 1065 lbs.
15 x 15 1268 lbs.
16 x 10 975 lbs.
16 x 12 1119 lbs.
16 x 14 1263 lbs.
16 x 16 1407 lbs.
18 x 10 1065 lbs.
18 x 12 1227 lbs.
18 x 14 1389 lbs.
18 x 15 1470 lbs.
18 x 16 1551 lbs.
18 x 18 1713 lbs.
20 x 10 1155 lbs.
20 x 12 1335 lbs.
20 x 14 1515 lbs.
20 x 15 1605 lbs.
20 x 16 1695 lbs.
20 x 18 1875 lbs.
20 x 20 2055 lbs.
22 x 10 1245 lbs.
25 x 20 (6 posts) 2505 lbs.

Pergola Assembly and Shipping

Assembly is best done by two people and usually takes about half a day to a day, depending on size. Take a look at our assembly instructions below for more specific details. If you plan to pour concrete, the project will require an additional half day prior to assembly to square the corners and let the concrete dry.

Pergolas ship in double cardboard boxes strapped to a crate. UPS Freight or another LTL carrier will call a day or two before delivery to set up a 4-hour delivery window. They will deliver the crate with a lift gate truck to your driveway. Once on your driveway, you can cut the straps and lift the individual boxes. If the trucking company shows up at your driveway unprepared with either no lift gate or no pallet jack, it's really not a big deal. Just cut the straps while the pallet is still on the truck and unload the boxes from the truck instead. The individual boxes are packaged under 100 pounds for ease of movement.

If you have assembly questions, email or call us (see pergola assembly instructions below). And, in the unlikely event a part arrives broken, let us know and we will quickly ship a replacement part.

Assembly Instructions for Freestanding Pergolas

Assembly Instructions for Pergolas Attached to Structures and/or Extra Large

Local Delivery and Installation

We can deliver and install your pergola for an additional fee if you are in California. We can also go as far as South Arizona and into Nevada. Please email or call us, or if ordering online, just write in the comment section that you'd like help with the assembly or installation of your order. We will have our assembly team bring your pergola and assemble it on-site. Assembly/installation adds between 8 and 15% to the cost of your order (depending on size, complexity, and distance involved).

Large Pergolas

L x W in Feet
10 x 10 Large Pergola Add to Cart Old-Growth Redwood $4230 Mature Redwood $3600 Young Redwood $3180 Douglas-fir $2750
12 x 10 Large Pergola Add to Cart Old-Growth Redwood $4770 Mature Redwood $4060 Young Redwood $3580 Douglas-fir $3110
12 x 12 Large Pergola Add to Cart Old-Growth Redwood $5410 Mature Redwood $4600 Young Redwood $4060 Douglas-fir $3520
14 x 10 Large Pergola Add to Cart Old-Growth Redwood $5300 Mature Redwood $4510 Young Redwood $3980 Douglas-fir $3450
14 x 12 Large Pergola Add to Cart Old-Growth Redwood $6060 Mature Redwood $5160 Young Redwood $4550 Douglas-fir $3940
14 x 14 Large Pergola Add to Cart Old-Growth Redwood $6810 Mature Redwood $5790 Young Redwood $5110 Douglas-fir $4430
15 x 10 Large Pergola Add to Cart Old-Growth Redwood $5570 Mature Redwood $4740 Young Redwood $4180 Douglas-fir $3630
15 x 12 Large Pergola Add to Cart Old-Growth Redwood $6390 Mature Redwood $5440 Young Redwood $4800 Douglas-fir $4160
15 x 15 Large Pergola Add to Cart Old-Growth Redwood $7590 Mature Redwood $6460 Young Redwood $5700 Douglas-fir $4940
16 x 10 Large Pergola Add to Cart Old-Growth Redwood $5850 Mature Redwood $4980 Young Redwood $4390 Douglas-fir $3810
16 x 12 Large Pergola Add to Cart Old-Growth Redwood $6710 Mature Redwood $5710 Young Redwood $5040 Douglas-fir $4370
16 x 14 Large Pergola Add to Cart Old-Growth Redwood $7570 Mature Redwood $6440 Young Redwood $5680 Douglas-fir $4930
16 x 16 Large Pergola Add to Cart Old-Growth Redwood $8430 Mature Redwood $7170 Young Redwood $6330 Douglas-fir $5480
18 x 10 Large Pergola Add to Cart Old-Growth Redwood $6390 Mature Redwood $5440 Young Redwood $4800 Douglas-fir $4160
18 x 12 Large Pergola Add to Cart Old-Growth Redwood $7360 Mature Redwood $6260 Young Redwood $5520 Douglas-fir $4790
18 x 14 Large Pergola Add to Cart Old-Growth Redwood $8320 Mature Redwood $7080 Young Redwood $6240 Douglas-fir $5410
18 x 15 Large Pergola Add to Cart Old-Growth Redwood $8810 Mature Redwood $7490 Young Redwood $6610 Douglas-fir $5730
18 x 16 Large Pergola Add to Cart Old-Growth Redwood $9620 Mature Redwood $8180 Young Redwood $7220 Douglas-fir $6260
18 x 18 Large Pergola Add to Cart Old-Growth Redwood $10260 Mature Redwood $8730 Young Redwood $7700 Douglas-fir $6670
20 x 10 Large Pergola Add to Cart Old-Growth Redwood $6920 Mature Redwood $5890 Young Redwood $5190 Douglas-fir $4500
20 x 12 Large Pergola Add to Cart Old-Growth Redwood $8000 Mature Redwood $6800 Young Redwood $6000 Douglas-fir $5200
20 x 14 Large Pergola Add to Cart Old-Growth Redwood $9080 Mature Redwood $7720 Young Redwood $6810 Douglas-fir $5910
20 x 15 Large Pergola Add to Cart Old-Growth Redwood $9610 Mature Redwood $8170 Young Redwood $7210 Douglas-fir $6250
20 x 16 Large Pergola Add to Cart Old-Growth Redwood $10150 Mature Redwood $8630 Young Redwood $7620 Douglas-fir $6600
20 x 18 Large Pergola Add to Cart Old-Growth Redwood $11230 Mature Redwood $9550 Young Redwood $8430 Douglas-fir $7300
20 x 20 Large Pergola Add to Cart Old-Growth Redwood $12310 Mature Redwood $10470 Young Redwood $9240 Douglas-fir $8010

Extra Large Pergolas (6 Posts)

L x W in Feet
25 x 15 Extra Large Pergola Add to Cart Old-Growth Redwood $12400 Mature Redwood $10540 Young Redwood $9300 Douglas-fir $8060
25 x 16 Extra Large Pergola Add to Cart Old-Growth Redwood $13100 Mature Redwood $11140 Young Redwood $9830 Douglas-fir $8520
25 x 18 Extra Large Pergola Add to Cart Old-Growth Redwood $14100 Mature Redwood $11990 Young Redwood $10580 Douglas-fir $9170
25 x 20 Extra Large Pergola Add to Cart Old-Growth Redwood $15000 Mature Redwood $12750 Young Redwood $11250 Douglas-fir $9750
26 x 15 Extra Large Pergola Add to Cart Old-Growth Redwood $12900 Mature Redwood $10970 Young Redwood $9680 Douglas-fir $8390
28 x 15 Extra Large Pergola Add to Cart Old-Growth Redwood $13800 Mature Redwood $11730 Young Redwood $10350 Douglas-fir $8970
28 x 18 Extra Large Pergola Add to Cart Old-Growth Redwood $16100 Mature Redwood $13690 Young Redwood $12080 Douglas-fir $10470
30 x 18 Extra Large Pergola Add to Cart Old-Growth Redwood $17600 Mature Redwood $14960 Young Redwood $13200 Douglas-fir $11440
30 x 20 Extra Large Pergola Add to Cart Old-Growth Redwood $19300 Mature Redwood $16410 Young Redwood $14480 Douglas-fir $12550
35 x 20 Extra Large Pergola Add to Cart Old-Growth Redwood $21700 Mature Redwood $18450 Young Redwood $16280 Douglas-fir $14110

See our Small Pergola Prices »

Anchor Kit

Anchor Kit for Two-Post Pergola—
includes 2 Metal Anchors, 4 Anchor Bolts, 4 Lag Bolts (to secure posts to concrete) and 8 Matching Wood Trim Pieces (to hide metal hardware with trim)
Add to Cart $70
Anchor Kit for Four-Post Pergola—
includes 4 Metal Anchors, 8 Anchor Bolts, 8 Lag Bolts (to secure posts to concrete) and 16 Matching Wood Trim Pieces (to hide metal hardware with trim)
Add to Cart $125
Anchor Kit for Six-Post Pergola—
includes 6 Metal Anchors, 12 Anchor Bolts, 12 Lag Bolts (to secure posts to concrete) and 24 Matching Wood Trim Pieces (to hide metal hardware with trim)
Add to Cart $175

Pergola Finishing Options

Painted PergolaAll of our pergolas are fully planed, pre-cut, routered, notched, all holes are pre-drilled, and every timber finely sanded. After sanding, there are different finishing options you can choose from:
  • We can seal each timber with our standard sealant, a tung and linseed oil based Superdeck sealant. We use a 50/50 combination of semi-transparent sealant no. 1905 (Heart Redwood) and no. 1910 (Natural). Superdeck has UV protection that helps keep the surface color of the pergola looking supple and beautiful for a few years.
  • If you are planning to add another stain or sealant, just order your pergola "unfinished."
  • Do you want to paint your pergola to match your house? We’ll add 2 coats of oil-based primer to all the timbers so all you have to do is add one coat of color. Choose the primer option that best suits your needs during checkout: if you plan to paint a dark color, order the gray primer, or if painting a light color, order the off-white primer.

Wood Grade Options

Click on the images below for more information.
Old-Growth Redwood
Old-Growth Redwood

30 Year Warranty
Mature Redwood
Mature Redwood

20 Year Warranty
Young Redwood
Young Redwood

10 Year Warranty
Douglas-fir
Douglas-fir

8 Year Warranty

Wood Samples: If you'd like to experience the quality of our wood before placing a furniture order—or if you'd like to see first-hand the difference between our four grades of wood—we offer a set of wood samples. For $20 we'll expedite your samples anywhere in the continental US (or $25 to Hawaii, Alaska, and Canada). The purchase price will be refunded on your first furniture order.

Add to Cart Wood Samples - Continental US (price includes shipping) - $20
Add to Cart Wood Samples - Hawaii, Alaska, and Canada (price includes shipping) - $25

Finish Options

Your furniture can be finished in one of six ways (select during checkout):

  • Standard Sealant

    If you want to keep the natural wood tones with a quality semi-transparent linseed & tung oil based product. This finish will hold the surface color for an average of 2 years. (Young-Growth will be stained to appear like Mature-Growth; learn more.)
  • Premium Sealant

    If you want to keep the natural wood tones with a translucent Alkyd oil based product. This finish will hold the surface color for an average of 4 years.
  • Unfinished

    Lets you apply your own stain, or let the wood fade to a "weathered look" in a few months.
  • Off-White Oil-Based Primer

    If you're going to paint in a light color. (We apply two coats.)
  • Gray Oil-Based Primer

    If you're going to paint in a darker color. (We apply two coats.)
  • Wax Finish

    If you plan to use your furniture indoors and would like to keep it looking great without sealant or paint.
  • Learn more about our finish options and how to care for your Forever Redwood furniture.

We would like to say a special "Thank You" to all of our wonderful customers who were kind enough to send in their compliments and messages of appreciation. See our fabulous testimonials »

Read more testimonials from our customers...