Metal Building Prices in Cameron County, Texas
Installed price ranges below are engineered to Cameron County's design loads — 152 mph design wind speed, TDI windstorm (WPI-8) certification, and no governing snow load. Pick a size for the full breakdown.
Serving Brownsville, Harlingen, San Benito, La Feria, Los Fresnos, Port Isabel, South Padre Island and the rest of Cameron County.
| Design wind speed | 152 mph — Coastal high wind |
|---|---|
| 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 · Brownsville |
| Permitting office | Cameron County Dept of Transportation — Building Permits & Inspections · 956-247-3500 |
Prices by size in Cameron County
| Size | Sq ft | Installed range |
|---|---|---|
| 12×20 | 240 | $4,400 – $8,000 |
| 20×20 | 400 | $7,400 – $13,500 |
| 20×30 | 600 | $11,100 – $19,700 |
| 24×30 | 720 | $13,500 – $24,000 |
| 30×30 | 900 | $16,600 – $30,100 |
| 24×40 | 960 | $17,800 – $32,000 |
| 30×40 | 1,200 | $20,900 – $36,900 |
| 30×50 | 1,500 | $25,800 – $46,100 |
| 40×40 | 1,600 | $27,700 – $49,200 |
| 30×60 | 1,800 | $30,800 – $55,400 |
| 40×60 | 2,400 | $41,200 – $73,800 |
| 50×50 | 2,500 | $43,100 – $76,900 |
| 50×60 | 3,000 | $51,700 – $81,200 |
| 40×80 | 3,200 | $55,400 – $86,700 |
| 40×100 | 4,000 | $68,900 – $108,200 |
| 50×80 | 4,000 | $68,900 – $108,200 |
| 60×80 | 4,800 | $82,400 – $129,800 |
| 50×100 | 5,000 | $86,100 – $135,300 |
| 60×100 | 6,000 | $103,300 – $162,400 |
| 60×120 | 7,200 | $124,200 – $195,000 |
| 80×100 | 8,000 | $137,800 – $216,500 |
Estimated range based on 2026 market data and Cameron County design requirements. Final pricing requires a dealer quote.
Building in Cameron County
Cameron County is open-coast wind country at 152 mph design wind speed — among the highest in Texas. Buildings here are engineered for direct hurricane exposure: heavy-gauge frames, dense fastening, upgraded anchorage, and stamped drawings are not optional. This is the single biggest driver of the price band above, and it's why a building in Brownsville costs more than the same size inland.
TDI windstorm certification (WPI-8) applies here
Cameron 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 Cameron 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.