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
| 20x20 ft 3-Point Triangular Shade Sail Frame Plan | 20x20 ft Drop-Down Awning Sail Shade Sail Frame Plan | |
|---|---|---|
| Category | Shade Sail Frames | Shade Sail Frames |
| Style | 3-Point Triangular | Drop-Down Awning Sail |
| Footprint | 20x20 ft (400 sq ft) | 20x20 ft (400 sq ft) |
| Wood species | Cypress | Redwood |
| Roof finish | tensioned 320-gsm shade sail fabric | tensioned 320-gsm shade sail fabric |
| Difficulty | Beginner | Intermediate |
| Build time | ~22 hrs | ~27 hrs |
| Materials cost | $5,375–$8,400 | $6,500–$10,150 |
| Footing depth | 48″ × 4 posts | 48″ × 4 posts |
| Concrete | 12 × 60-lb bags | 12 × 60-lb bags |
| Cut-list items | 4 | 4 |
| Build steps | 9 | 9 |
Cost & budget
The 20x20 ft 3-Point Triangular Shade Sail Frame Plan lands in the $5,375–$8,400 range for materials in Cypress, while the 20x20 ft Drop-Down Awning Sail Shade Sail Frame Plan runs $6,500–$10,150 in Redwood. The first plan is approximately 21% more expensive at typical 2026 lumber-yard pricing — driven mostly by the choice of Redwood over Cypress and the difference in cubic concrete volume between 4 and 4 footings.
Labor & difficulty
At ~22 hours, the 20x20 ft 3-Point Triangular Shade Sail Frame Plan is rated Beginner. The 20x20 ft Drop-Down Awning Sail Shade Sail Frame Plan takes ~27 hours and is rated Intermediate. The labor delta is roughly 5 hours, or one extra working day on the 20x20 ft Drop-Down Awning Sail Shade Sail Frame Plan. If you are newer to outdoor woodworking, the 20x20 ft 3-Point Triangular Shade Sail Frame Plan is the safer pick — it uses simpler joinery and fewer compound cuts.
Footprint & site fit
At 400 sq ft vs 400 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 20x20 ft 3-Point Triangular Shade Sail Frame Plan needs a clear area of approximately 24×24 ft and the 20x20 ft Drop-Down Awning Sail Shade Sail Frame Plan needs 24×24 ft.
Material & durability
The 20x20 ft 3-Point Triangular Shade Sail Frame Plan is built from Cypress, while the 20x20 ft Drop-Down Awning Sail Shade Sail Frame Plan calls for Redwood. 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 20x20 ft 3-Point Triangular Shade Sail Frame Plan page and the complete 20x20 ft Drop-Down Awning Sail Shade Sail Frame Plan page. Both ship with full cut lists, hardware schedules, footing specs, and step-by-step build instructions.