Metal Building Prices in Willacy County, Texas
Installed price ranges below are engineered to Willacy County's design loads — 142 mph design wind speed, TDI windstorm (WPI-8) certification, and no governing snow load. Pick a size for the full breakdown.
Serving Raymondville, Lyford, San Perlita and the rest of Willacy County.
| Design wind speed | 142 mph — High (near-coast) |
|---|---|
| Ground snow load | 0 psf — non-governing |
| Seismic design category | A — non-governing in TX |
| TDI windstorm (WPI-8) | Required — catastrophe area |
| Region / county seat | Rio Grande Valley · Raymondville |
| Permitting office | Willacy County Permits Office (Floodplain / Development) · 956-689-3393 |
Prices by size in Willacy County
| Size | Sq ft | Installed range |
|---|---|---|
| 12×20 | 240 | $4,300 – $7,700 |
| 20×20 | 400 | $7,100 – $13,100 |
| 20×30 | 600 | $10,700 – $19,000 |
| 24×30 | 720 | $13,100 – $23,200 |
| 30×30 | 900 | $16,100 – $29,200 |
| 24×40 | 960 | $17,300 – $30,900 |
| 30×40 | 1,200 | $20,200 – $35,700 |
| 30×50 | 1,500 | $25,000 – $44,600 |
| 40×40 | 1,600 | $26,800 – $47,600 |
| 30×60 | 1,800 | $29,800 – $53,600 |
| 40×60 | 2,400 | $39,900 – $71,400 |
| 50×50 | 2,500 | $41,700 – $74,400 |
| 50×60 | 3,000 | $50,000 – $78,500 |
| 40×80 | 3,200 | $53,600 – $83,900 |
| 40×100 | 4,000 | $66,600 – $104,700 |
| 50×80 | 4,000 | $66,600 – $104,700 |
| 60×80 | 4,800 | $79,700 – $125,500 |
| 50×100 | 5,000 | $83,300 – $130,900 |
| 60×100 | 6,000 | $100,000 – $157,100 |
| 60×120 | 7,200 | $120,200 – $188,600 |
| 80×100 | 8,000 | $133,300 – $209,400 |
Estimated range based on 2026 market data and Willacy County design requirements. Final pricing requires a dealer quote.
Building in Willacy County
Willacy County's 142 mph design wind speed is in the elevated-inland-coast band. This meaningfully changes the steel package: heavier columns, closer fastener spacing, and often rod-and-cable or portal bracing. Any reputable supplier will engineer to 142 mph for this county, and the price band on this page already reflects that added steel.
TDI windstorm certification (WPI-8) applies here
Willacy County is inside a Texas Department of Insurance (TDI) designated catastrophe area. To insure a structure through the Texas Windstorm Insurance Association (TWIA) — and often to satisfy the local building department — the building must be engineered to TDI standards and pass a WPI-8 windstorm inspection. In practice that means TDI-approved product evaluations, an engineer's design that meets the county wind load, and inspection at framing and completion so the installer can file for the WPI-8 certificate of compliance.
Budget for engineered, stamped plans and the inspection itself. Skipping certification can leave the building uninsurable against wind and hail in this county, so we've built the WPI-8 premium into the coastal price band rather than hiding it.
Foundation & slab in Willacy County
Steel is only half the job — the concrete under it is the other half. Rio Grande Valley ground is largely alluvial clay and silt with a shallow water table. Slabs benefit from good drainage detailing and edge reinforcement; a soils check is worth it before you pour. The slab range shown in the estimator is a Texas-typical figure; your final number depends on a soils report and the local ready-mix price.