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
| 18x24 ft Hip-Roof Pavilion Plan | 16x24 ft Outdoor Kitchen Pavilion Plan | |
|---|---|---|
| Category | Pavilions | Pavilions |
| Style | Hip-Roof | Outdoor Kitchen |
| Footprint | 18x24 ft (432 sq ft) | 16x24 ft (384 sq ft) |
| Wood species | Western Red Cedar | Composite (Trex / Azek) |
| Roof finish | aluminum louvered system | aluminum louvered system |
| Difficulty | Intermediate | Intermediate |
| Build time | ~51 hrs | ~28 hrs |
| Materials cost | $21,850–$34,150 | $40,550–$63,375 |
| Footing depth | 36″ × 6 posts | 36″ × 6 posts |
| Concrete | 12 × 60-lb bags | 12 × 60-lb bags |
| Cut-list items | 7 | 7 |
| Build steps | 12 | 12 |
Cost & budget
The 18x24 ft Hip-Roof Pavilion Plan lands in the $21,850–$34,150 range for materials in Western Red Cedar, while the 16x24 ft Outdoor Kitchen Pavilion Plan runs $40,550–$63,375 in Composite (Trex / Azek). The first plan is approximately 86% more expensive at typical 2026 lumber-yard pricing — driven mostly by the choice of Composite (Trex / Azek) over Western Red Cedar and the difference in cubic concrete volume between 6 and 6 footings.
Labor & difficulty
At ~51 hours, the 18x24 ft Hip-Roof Pavilion Plan is rated Intermediate. The 16x24 ft Outdoor Kitchen Pavilion Plan takes ~28 hours and is rated Intermediate. The labor delta is roughly 23 hours, or one extra working day on the 18x24 ft Hip-Roof Pavilion Plan. Both plans require the same skill level, so the deciding factor is footprint and aesthetics rather than your comfort with carpentry.
Footprint & site fit
At 432 sq ft vs 384 sq ft, you are choosing between a full outdoor room and a full outdoor room. Allow at least 24 inches of clearance on every side for furniture and walking paths — that means the 18x24 ft Hip-Roof Pavilion Plan needs a clear area of approximately 22×28 ft and the 16x24 ft Outdoor Kitchen Pavilion Plan needs 20×28 ft.
Material & durability
The 18x24 ft Hip-Roof Pavilion Plan is built from Western Red Cedar, while the 16x24 ft Outdoor Kitchen Pavilion Plan calls for Composite (Trex / Azek). 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, 18x24 ft Hip-Roof Pavilion Plan is the clear budget pick. 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 18x24 ft Hip-Roof Pavilion Plan page and the complete 16x24 ft Outdoor Kitchen Pavilion Plan page. Both ship with full cut lists, hardware schedules, footing specs, and step-by-step build instructions.