Freestanding Pergola Construction
Handis freestanding pergola construction puts a four-to-six-post Western Red Cedar timber-frame or powder-coated aluminum louvered pergola on a residential deck, patio, or backyard — no house attachment, no ledger flashing, no rim-joist through-bolt, structure stands on its own concrete-set footings — from $6,000 for an 8-by-10 freestanding cedar plan to $16,000 for a 16-by-20 freestanding cedar build. Freestanding gives placement flexibility — the pergola sits in the middle of the yard, over a freestanding patio away from the house, or as a hot-tub canopy with no wall in reach. Plans under 200 square feet usually clear the permit threshold entirely in most Seattle-area jurisdictions (confirmed for the specific address on the booking call), which removes 1 to 4 weeks of permit lead time from the schedule. The structural simplicity of a freestanding plan — no ledger, no Z-flashing, no wall-fastener detail — also makes the build slightly faster than the equivalent attached configuration once the footings have cured.
Service
What Does a Freestanding Pergola Build Include?
A freestanding pergola build is the timber-frame (cedar) or aluminum-louvered carpentry service that raises a four-to-six-post open-roof structure on a residential deck, patio, or backyard — covering site review and post-location layout (validated against septic, gas, irrigation, and buried utility lines), footing dig with a power auger to 24 to 30 inches below grade, concrete pour with Simpson ABA or ABU post-base anchors (cedar) or the manufacturer-specified post-base anchor (aluminum) set plumb in the wet pour, 48-hour concrete cure, post raise with a deck post jack, beam set with two installers, rafter install (cedar) or louver-frame mount (aluminum), hardware torque to manufacturer or engineer-of-record spec, and finish detailing. Handis covers freestanding pergolas from $6,000 on the 8-by-10 cedar plan up to $16,000 on the 16-by-20 cedar build. Freestanding plans under 200 square feet usually clear the building-permit threshold entirely in most Seattle-area jurisdictions.
Four Posts on Standard Plans, Six on Larger
Smaller freestanding plans (8-by-10 through 12-by-14) use four posts at the corners — one at each of the four corners of the pergola footprint. Larger plans (12-by-16 and up) step up to six posts (four corners plus two mid-span supports on the long axis) because the beam span between corner posts on a 16-foot or 20-foot long axis exceeds the safe load for unsupported 4x8 or even 6x8 cedar beams. The six-post configuration adds two more footings to dig and two more posts to set, but the structural reliability of the longer-span configuration is the reason.
Concrete Footings Sized to Wind Load and Frost Depth
Power-auger every footing to 24 to 30 inches below grade — the IRC R403 frost-line minimum for King and Snohomish County is 24 inches; high-exposure sites (mountain-adjacent, exposed bluffs) step deeper. Footing diameter 12 to 18 inches depending on the post size and the wind-load calc — sized to keep the structure plumb against the design wind event. Simpson ABA or ABU post-base anchor (cedar) or manufacturer-specified anchor (aluminum) set plumb in the wet pour. 48-hour concrete cure before the post is raised.
Site Review Validates Buried Utility Lines
Before any footing is dug, we walk the site to confirm the post locations against any buried utility lines — septic field, septic tank, gas line, water service, irrigation lines, electrical conduit. The 811 call-before-you-dig service flags the utility-line locations for public utilities; private lines (irrigation, the gas line to the BBQ, the LV transformer feed to the garden lights) get flagged by the homeowner. A mis-located footing through a utility line is a $1,000 to $10,000 mistake. We do the layout review carefully on the first visit and confirm the post locations are clear.
Often No Building Permit Under 200 Square Feet
Freestanding pergolas under 200 square feet (a 10-by-20 plan or smaller; an 8-by-25, a 10-by-19, a 12-by-16, all qualify) usually do not require a building permit in Seattle, King County, Bellevue, Redmond, Kirkland, Sammamish, Mercer Island, and most other Puget Sound jurisdictions — the threshold is jurisdiction-specific and we confirm for your address on the booking call. Freestanding plans over 200 square feet (a 12-by-18, a 14-by-16, a 16-by-20) usually require a permit; Handis pulls it as the responsible builder. The permit-threshold question is a real budget factor — a 12-by-16 cedar plan that fits under the threshold avoids 1 to 4 weeks of permit lead time and the permit fee.
No Ledger, No Flashing, No Wall-Fastener Detail
The structural simplicity of a freestanding plan — no ledger to fasten to the house, no Z-flashing detail to install at the top of the ledger, no through-bolt fastener spec into the rim joist or structural blocking — makes the build slightly faster than the equivalent attached configuration once the footings have cured. The trade-off is the additional 1 to 2 posts and footings (a 10-by-12 freestanding needs 4 posts; a 10-by-12 attached needs 2 outer posts plus the ledger) and the absence of the visual tie to the house, which some homeowners prefer (the pergola reads as a yard feature in its own right rather than as an extension of the building).
How a Freestanding Pergola Build Works
Seven sequential steps from site review through finish-detail — the actual sequence we follow on every freestanding pergola build.
Site Review and Post-Location Layout
Tech walks the deck, patio, or yard area, confirms the post locations against any septic field, gas line, water service, irrigation, or electrical conduit (811 call for public utilities, homeowner walkthrough for private lines), and validates the layout square with a 3-4-5 method against the deck edges or property lines. Confirms whether the plan falls under or over the jurisdiction's permit threshold.
Power-Auger Footings to 24-30 Inches
Power-auger every footing to 24 to 30 inches below grade with the diameter sized to the post size and load (12 to 18 inches typically). Manual post-hole digging in PNW clay is a week of labor we are not going to pass along. Four footings on standard plans (one at each corner), six on larger plans (four corners plus two mid-span supports on the long axis).
Pour Concrete with Post-Base Anchors Set in the Wet Pour
Pour ready-mix concrete around a Simpson ABA or ABU post-base anchor (cedar) or the manufacturer-specified post-base (aluminum) set plumb in the wet pour. Anchor positioning checked against a 4-foot level and a chalk line so every post lands plumb and the structure reads square against the deck or patio edges.
48-Hour Concrete Cure Between Pour and Post-Raise
Concrete cures 48 hours before the post is raised. Cure delay is fixed (not negotiable — green concrete pulls the anchor when the post load goes on). On a two-day build window we pour day one and raise day two; on a one-trip build we pre-cure the footings on a prior visit and raise on the second visit.
Raise the 6x6 Cedar Posts (or Aluminum Posts)
6x6 cedar posts (or aluminum posts on louvered systems) lifted onto the cured ABU anchors and through-bolted with the post-base hardware. Each post plumbed against a 4-foot level on two faces and braced with 2x4 cedar braces to the ground until the beams go up. Plumb verified on every post before the beams are set.
Set the Beams and Install Rafters or Louver Frame
4x8 (standard span) or 6x8 (over-12-foot span) cedar beams raised with a deck post jack and two installers, set into Simpson ZMAX post-cap hardware, through-bolted with 5/8 inch carriage bolts. Cedar rafters (2x6 or 2x8) installed with hurricane ties and concealed structural screws; on aluminum louvered, the louver frame assembled per the manufacturer manual and the louvers mounted into the frame.
Finish-Detail and Tools Off Site
Rafter tails chamfered or scalloped (cedar), post caps installed (cedar), post-base trim hiding the post-to-anchor connection. On aluminum louvered, motor commissioning per the manufacturer procedure and warranty registration filed. Tools off site at the end of the second or third day on standard plans; larger plans (12-by-16 and up) run an additional half day.
Freestanding Pergola Pricing
Final pricing depends on plan size, material (cedar timber-frame vs aluminum louvered), beam up-size requirement on spans over 12 feet, rafter spacing on cedar (24 vs 16 inches on center), and whether the plan falls over the 200-square-foot permit threshold for your jurisdiction. Plans under 200 square feet usually do not require a building permit; plans over 200 square feet require a permit pulled by Handis with the fee passing through as a named line item. Request a free estimate for an accurate quote.
Tell us the footprint and where in the yard the pergola lands — we will quote the cedar plan, confirm the permit threshold for your jurisdiction, and call out any utility-line clearance review on the first visit.
Why Handis for Freestanding Pergolas
The 200-square-foot permit threshold is the single biggest budget lever on a freestanding pergola. A 12-by-16 cedar plan at 192 square feet clears the threshold in most Seattle-area jurisdictions, avoids the 1 to 4 weeks of permit lead time, and saves the $400 to $800 permit-and-review fee. A 12-by-18 cedar plan at 216 square feet crosses the threshold and triggers the permit, the engineer-of-record sign-off on larger configurations, and the framing inspection schedule. We are honest about the permit-threshold math on the first visit — sometimes the right call is to stay just under the threshold with a 12-by-16 plan that covers everything you want covered; sometimes the right call is to cross the threshold for a 14-by-16 plan because the extra 32 square feet matters for the use case. We do not push you to cross or stay under either way; the math is yours.
Permit-threshold math run honestly on the first visit
Freestanding pergolas under 200 square feet usually clear the building-permit threshold in most Seattle-area jurisdictions; over 200 square feet usually trigger the permit. We confirm the specific threshold for your jurisdiction (Seattle, King County, Bellevue, Redmond, Kirkland, Sammamish, Mercer Island, Issaquah, Renton, Tukwila — close to identical but not identical) on the booking call. We will not push you across the threshold to bill a larger project, and we will not push you under the threshold if the use case needs the extra footprint — the math is yours and we lay it out honestly.
Site review against buried utility lines
Before any footing is dug, we walk the site to confirm the post locations against any buried utility lines — septic field, septic tank, gas line, water service, irrigation lines, electrical conduit. The 811 call-before-you-dig service flags the public utility lines; private lines (irrigation, the gas line to the BBQ, the LV feed to garden lights) get walked through with the homeowner. A mis-located footing through a utility line is a $1,000 to $10,000 mistake — and the layout review is a 30-minute visit that prevents it on every job.
Power-augered footings to 24-30 inches, sized to wind load
Every freestanding pergola post sits on a concrete footing dug with a power auger to 24 to 30 inches below grade (sized to the IRC R403 frost-line plus the wind-load calc), 12 to 18 inches in diameter (sized to the post size and the load). Simpson ABA or ABU post-base anchor (cedar) or manufacturer-specified post-base (aluminum) set plumb in the wet pour, 48-hour cure before the post is raised.
Six posts on larger plans — long-axis beam-span gets mid-span support
Larger freestanding plans (12-by-16 and up) step from four posts to six because the beam span on the long axis exceeds the safe load for unsupported 4x8 or even 6x8 cedar beams. The two additional mid-span posts go on the long axis, the structural reliability of the structure goes up significantly, and the visual proportion of the pergola reads better with the additional posts. We do not skip the mid-span posts to hit a lower price because the failure mode is the beam sag at the mid-span over the first few wet PNW winters.
Pre-cure footing visit option for single-trip jobs
For jobs where the homeowner needs the work done on a fixed weekend and the 48-hour cure cannot wait in the middle of the visit, we offer the pre-cure footing visit — visit one to dig the footings and pour the concrete, visit two (3 or more days later) to raise the posts and complete the build. The pre-cure visit add-on is $600 and lets us hit a Saturday-Sunday completion window even when the cure clock would otherwise eat the second day.
One-year project warranty on carpentry
One-year project warranty on our carpentry — post-set, beam-raise, rafter install, hardware torque, decorative-detail finish. Cedar weathering to silver in 12 to 18 months is the natural patina and not a warranty issue. The structure stays plumb and square for the life of the cedar (25+ years on heartwood, 18 to 25 on clear) given the concrete-set footings and the corrosion-compatible Simpson ZMAX or stainless hardware throughout.
Estimate
Tell us the rough footprint (length by width — a 12-by-16 measurement off the deck or patio), the material preference (Western Red Cedar or aluminum louvered), and where in the yard the pergola lands (over a deck, over a flagstone patio, in the middle of the lawn, over a hot tub). We confirm the permit threshold for your jurisdiction and review the post locations against any buried utility lines on the first visit.
Customer Reviews
Freestanding pergola reviews from real Handis customers.
12x16 freestanding cedar pergola over our flagstone patio in Magnolia — 192 square feet, just under the Seattle DCI permit threshold so no permit was needed and we saved 3 weeks of lead time. Handis power-augered the six footings, set the 6x6 posts, raised the 6x8 beams, and chamfered the rafter tails. Two summers in and the cedar is silver. Reads exactly like the inspiration photos.
10x12 freestanding cedar pergola in the corner of our Issaquah backyard — over a paver patio we already had. Under the 200 square foot threshold so no Issaquah permit. Handis dug the four footings with the power auger, ran the layout against my septic field (which I had no idea was that close to where I wanted the pergola), and built the structure two days later. Saved me a $2,000 septic-line repair callback that the wrong location would have caused.
8x10 freestanding cedar pergola over our hot tub in Kirkland. Smallest plan they build but Handis took the same care — site review against the buried hot tub electrical conduit, power-augered footings, plumb posts on the Simpson anchors, chamfered rafter tails, low-voltage LED strip in the rafters. Under 200 sq ft so no Kirkland permit. Five days from booking call to finished pergola.
16x20 freestanding cedar in our Sammamish backyard — 320 square feet so the Sammamish permit was required. Handis pulled the permit, engineer-of-record signed off on the wind-load calcs (Tiger Mountain wind exposure), and the structure went up over 3 days after the footings cured. Six posts on the long-axis configuration, up-sized 6x8 beams, 2x8 rafters at 16 on center. Largest pergola I have seen on a residential property and it reads as architecture.
12x14 freestanding cedar in our Ballard backyard — 168 square feet, no Seattle permit. Heavy clay in the lot meant manual post-hole digging would have taken a week. Handis brought the power auger, dug all four footings in an afternoon, poured the concrete, came back two days later and had the structure up by end of day two. Scalloped rafter tails, ball-top post caps, looks like furniture.
Frequently Asked Questions
Common questions about Handis freestanding pergola construction.