Wall Mount or Freestanding Pergola?

Your deck or patio sits right beside the house, and a pergola would turn it into a proper outdoor room. The question is whether to bolt the frame to the house or let it stand on its own. This page walks through both options, what each asks of your site, and how to size the structure to your space.

Does attaching to the house make sense?

A wall mount pergola uses the house as one side of its support. That means fewer posts, a tidy look against the wall, and shade that starts right at your back door. It suits a patio or deck that runs along one wall, where you want the pergola to feel like part of the house. It is a good fit when floor space is tight, since you give up no room to a second row of posts.

The trade-off is that your wall now matters. The structure needs solid framing to attach to, so it is worth checking what is behind your siding before you commit.

What a ledger board needs from you

The ledger is the board that fastens along the house wall and carries one end of the roof beams. It has to be secured to the house framing, not just to siding or trim. Plan for a straight, sound wall with no awkward bay or deep trim in the way. Flashing where the board meets the wall helps keep water out of the joint, and your local building rules may have a say, so check them first.

Follow the manual for fasteners and spacing. If you are unsure what your wall is made of, ask a builder to look before you buy.

Vinyl wall mount designs come in the same family of sizes, and suit people who want less upkeep on the part of the structure that sits close to the house.

When freestanding is the better call

A freestanding pergola has its own posts on every corner, so nothing touches your siding. That avoids drilling into the house and leaves the wall exactly as it is. It also lets you place the structure anywhere: out on a lawn, at the end of a path, or over a seating area away from the house.

It suits rented homes, walls with stone or brick you would rather not cut into, and gardens where you want a feature in its own right. Vintage Classic and Belvedere are the two styles of freestanding frame here. The Belvedere comes in cedar with a stain, treated pine and vinyl.

An arched look for garden spots

The Arched Garden design is a freestanding style with a curved top. It reads softer than a flat frame, which suits a planted garden, a lawn corner or a walkway where you want climbing plants to take over. Here it comes in red cedar and treated pine.

Sizing for a deck or patio

Start with the surface. On a deck, the posts need to sit where the deck is built to carry them, so measure the footprint and note where the joists run. On a patio, think about where the posts will land and whether the slab edge gives you room.

Then think about furniture. A table for four sits comfortably in something like 10' x 10'. A larger dining set and a lounge corner want 12' x 16' or more. Long, narrow patios along the house suit the wider wall mount sizes, such as 10' x 20'. Leave a little space around the frame so you can walk past the posts.

Small footprints have options too. A compact 8' x 8' or 8' x 10' frame fits a bistro set or a quiet corner.

For big entertaining areas, the largest sizes cover a whole terrace.

How to choose

• Wall or lawn: if the pergola sits against a sound wall, a wall mount saves posts. If you do not want to touch the siding, go freestanding.
• Material: cedar and red cedar are natural woods, treated pine is wood too, and vinyl is a different material altogether. Pick based on the look you want and how much upkeep you are happy with.
• Style: Vintage Classic is the traditional look, Belvedere is the other freestanding option, and Arched Garden has the curved top.
• Size: measure your deck or patio, then add your furniture and walking room.
• Finish: some cedar and pine models are listed with a stain, which saves one decision.

Questions people ask

Can I attach a pergola to any house?

Only if the wall can carry it. The ledger must fasten into the house framing. If you are unsure, ask a builder to check.

Does a freestanding pergola need to touch the house?

No. It stands on its own posts, so your siding stays untouched.

Can a pergola go on a deck?

Often yes, but the posts need proper support beneath them. Check how your deck is built and follow the manual.

Do I need a permit?

Rules differ by area. Check with your local building office before you order.