Metal Building Prices in Aransas County, Texas
Installed price ranges below are engineered to Aransas County's design loads — 154 mph design wind speed, TDI windstorm (WPI-8) certification, and no governing snow load. Pick a size for the full breakdown.
Serving Rockport, Fulton, Aransas Pass and the rest of Aransas County.
| Design wind speed | 154 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 | Coastal · Rockport |
| Permitting office | Aransas County Road & Bridge — Development / Floodplain Permits · 361-790-0152 |
Prices by size in Aransas 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 Aransas County design requirements. Final pricing requires a dealer quote.
Building in Aransas County
Aransas County is open-coast wind country at 154 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 Rockport costs more than the same size inland.
TDI windstorm certification (WPI-8) applies here
Aransas 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 Aransas County
Steel is only half the job — the concrete under it is the other half. Gulf Coast soils are typically soft coastal clay and sand with a high water table. Slabs here usually need a thicker turned-down edge, more reinforcement, and sometimes select fill — the concrete line item runs higher than the Texas average, and a soils report is money well spent. 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.