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
| 12x12 ft Modern Cube Gazebo Plan | 12x12 ft Modern Cube Gazebo Plan (Black Locust) | |
|---|---|---|
| Category | Gazebos | Gazebos |
| Style | Modern Cube | Modern Cube |
| Footprint | 12x12 ft (144 sq ft) | 12x12 ft (144 sq ft) |
| Wood species | Mahogany | Black Locust |
| Roof finish | aluminum louvered system | tensioned 320-gsm shade sail fabric |
| Difficulty | Beginner | Beginner |
| Build time | ~19 hrs | ~20 hrs |
| Materials cost | $11,625–$18,150 | $9,125–$14,250 |
| Footing depth | 36″ × 6 posts | 36″ × 6 posts |
| Concrete | 12 × 60-lb bags | 12 × 60-lb bags |
| Cut-list items | 6 | 6 |
| Build steps | 9 | 9 |
Cost & budget
The 12x12 ft Modern Cube Gazebo Plan lands in the $11,625–$18,150 range for materials in Mahogany, while the 12x12 ft Modern Cube Gazebo Plan (Black Locust) runs $9,125–$14,250 in Black Locust. The second plan is approximately 27% more expensive at typical 2026 lumber-yard pricing — driven mostly by the choice of Mahogany over Black Locust and the difference in cubic concrete volume between 6 and 6 footings.
Labor & difficulty
At ~19 hours, the 12x12 ft Modern Cube Gazebo Plan is rated Beginner. The 12x12 ft Modern Cube Gazebo Plan (Black Locust) takes ~20 hours and is rated Beginner. The labor delta is roughly 1 hours, or one extra working day on the 12x12 ft Modern Cube Gazebo Plan (Black Locust). 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 144 sq ft vs 144 sq ft, you are choosing between a generous patio cover and a generous patio cover. Allow at least 24 inches of clearance on every side for furniture and walking paths — that means the 12x12 ft Modern Cube Gazebo Plan needs a clear area of approximately 16×16 ft and the 12x12 ft Modern Cube Gazebo Plan (Black Locust) needs 16×16 ft.
Material & durability
The 12x12 ft Modern Cube Gazebo Plan is built from Mahogany, while the 12x12 ft Modern Cube Gazebo Plan (Black Locust) calls for Black Locust. 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, these two plans are close in cost and effort — your choice comes down to style and footprint. 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 12x12 ft Modern Cube Gazebo Plan page and the complete 12x12 ft Modern Cube Gazebo Plan (Black Locust) page. Both ship with full cut lists, hardware schedules, footing specs, and step-by-step build instructions.