Metal Building Prices in Brazoria County, Texas
Installed price ranges below are engineered to Brazoria County's design loads — 149 mph design wind speed, TDI windstorm (WPI-8) certification, and no governing snow load. Pick a size for the full breakdown.
Serving Pearland, Angleton, Lake Jackson, Alvin, Freeport, Clute, Sweeny and the rest of Brazoria County.
| Design wind speed | 149 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 | Houston Metro · Angleton |
| Permitting office | Brazoria County Engineering — Development/Building Permits · 979-864-1265 |
Prices by size in Brazoria 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 Brazoria County design requirements. Final pricing requires a dealer quote.
Building in Brazoria County
Brazoria County is open-coast wind country at 149 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 Angleton costs more than the same size inland.
TDI windstorm certification (WPI-8) applies here
Brazoria 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 Brazoria County
Steel is only half the job — the concrete under it is the other half. The Houston metro sits on expansive Beaumont and Lissie clays that swell and shrink with moisture. A properly designed slab — often post-tensioned or with a stiffened edge and moisture control — is what keeps a metal building square over time. Don't cut the foundation to save money here. 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.