If you have narrowed your shortlist to two specific designs, this is exactly the kind of decision where a side-by-side spec view saves a weekend of second-guessing. Both plans below are complete, code-aware DIY builds, but they differ on the things that matter for a backyard project — total cost, raw labor hours, footprint, and the wood species on the cut list.
Side-by-side specs
| 4x8 ft Trellis-Side Arbor Plan (Western Red Cedar) | 4x8 ft Trellis-Side Arbor Plan (White Oak) | |
|---|---|---|
| Category | Arbors | Arbors |
| Style | Trellis-Side | Trellis-Side |
| Footprint | 4x8 ft (32 sq ft) | 4x8 ft (32 sq ft) |
| Wood species | Western Red Cedar | White Oak |
| Roof finish | clear EPDM membrane | open lattice rafters |
| Difficulty | Advanced | Intermediate |
| Build time | ~143 hrs | ~33 hrs |
| Materials cost | $525–$825 | $725–$1,125 |
| Footing depth | 36″ × 2 posts | 36″ × 2 posts |
| Concrete | 4 × 60-lb bags | 4 × 60-lb bags |
| Cut-list items | 5 | 5 |
| Build steps | 9 | 9 |
Cost & budget
The 4x8 ft Trellis-Side Arbor Plan (Western Red Cedar) lands in the $525–$825 range for materials in Western Red Cedar, while the 4x8 ft Trellis-Side Arbor Plan (White Oak) runs $725–$1,125 in White Oak. The first plan is approximately 38% more expensive at typical 2026 lumber-yard pricing — driven mostly by the choice of White Oak over Western Red Cedar and the difference in cubic concrete volume between 2 and 2 footings.
Labor & difficulty
At ~143 hours, the 4x8 ft Trellis-Side Arbor Plan (Western Red Cedar) is rated Advanced. The 4x8 ft Trellis-Side Arbor Plan (White Oak) takes ~33 hours and is rated Intermediate. The labor delta is roughly 110 hours, or one extra working day on the 4x8 ft Trellis-Side Arbor Plan (Western Red Cedar). If you are newer to outdoor woodworking, the 4x8 ft Trellis-Side Arbor Plan (White Oak) is the safer pick — it uses simpler joinery and fewer compound cuts.
Footprint & site fit
At 32 sq ft vs 32 sq ft, you are choosing between a focal-point garden structure and a focal-point garden structure. Allow at least 24 inches of clearance on every side for furniture and walking paths — that means the 4x8 ft Trellis-Side Arbor Plan (Western Red Cedar) needs a clear area of approximately 8×12 ft and the 4x8 ft Trellis-Side Arbor Plan (White Oak) needs 8×12 ft.
Material & durability
The 4x8 ft Trellis-Side Arbor Plan (Western Red Cedar) is built from Western Red Cedar, while the 4x8 ft Trellis-Side Arbor Plan (White Oak) calls for White Oak. The species choice drives the cost delta and the maintenance schedule. Pressure-treated southern yellow pine is the cheapest and most rot-tolerant for in-ground posts; western red cedar is the DIY favorite for visible parts; redwood and white oak are heritage choices that command a premium.
Verdict
For a builder weighing these two specifically, 4x8 ft Trellis-Side Arbor Plan (White Oak) is the faster build. If both fit your budget and yard, default to the design whose style language matches the rest of your house — a Craftsman bungalow looks awkward beside a modern slatted pergola, and vice versa.
Read each plan in full before committing: the complete 4x8 ft Trellis-Side Arbor Plan (Western Red Cedar) page and the complete 4x8 ft Trellis-Side Arbor Plan (White Oak) page. Both ship with full cut lists, hardware schedules, footing specs, and step-by-step build instructions.