Key Findings — May 2026
- Steel +$395/ton from tariffs alone. Structural steel carries a 25% Section 232 tariff. Base price $1,580/ton → tariff-adjusted $1,975/ton.
- HVAC +$185/unit from tariffs. 10% tariff on equipment components adds $185 to every ton of residential HVAC capacity.
- Copper products +7.5% tariff surcharge. Applies to copper wire, plumbing copper, and electrical wire. On a 250ft roll of 12 AWG, that's +$5.40.
- Lumber, concrete, drywall, and roofing have zero tariff. Their price increases are entirely market-driven — and still significant.
- 12-month price increases compound the tariff hit. Steel total +26.1%, lumber +14.7%, copper +22.6% — only some of that is tariff-driven.
- A 2,000 sqft home: est. $4,200–$7,800 in tariff-driven material cost increase vs. 2024 pre-tariff budgets, based on BuildStackHub estimator data.
Current Tariff-Adjusted Prices
Live tariff rates applied to BuildStackHub's tracked base prices. Updated May 3, 2026.
Before vs. After Tariff — Full Comparison Table
All prices from BuildStackHub material tracking database. Tariff rates per USITC Section 232 and Section 301 schedules, effective 2025–2026.
| Material | Unit | Tariff Rate | Pre-Tariff Price | Tariff-Adjusted | $ Added by Tariff | 12-Mo Change | Tariff Category |
|---|---|---|---|---|---|---|---|
| Structural Steel | per ton | 25% | $1,580 | $1,975 | +$395 | +26.1% | Section 232 |
| HVAC Equipment | per ton capacity | 10% | $1,850 | $2,035 | +$185 | +12.5% | Section 301 |
| Copper Wire | per lb | 7.5% | $4.85 | $5.21 | +$0.36 | +22.6% | Section 301 |
| Electrical Wire (12 AWG) | per 250ft roll | 7.5% | $72.00 | $77.40 | +$5.40 | +20.4% | Section 301 |
| Plumbing Copper (3/4in) | per 10ft section | 7.5% | $28.00 | $30.10 | +$2.10 | +21.6% | Section 301 |
| Lumber (Framing) | per MBF | 0% | $450 | $450 | — | +34.8% | Market-driven |
| Concrete (Ready-Mix) | per cubic yard | 0% | $165 | $165 | — | +13.0% | Market-driven |
| Drywall (4x8 sheet) | per sheet | 0% | $14.50 | $14.50 | — | +15.1% | Market-driven |
| Roofing Shingles | per square (100 sqft) | 0% | $95.00 | $95.00 | — | +20.9% | Market-driven |
Source: BuildStackHub material price database. Base prices as of March 28, 2026. 12-month change: April 2025 vs. April 2026. Tariff rates per USITC schedules.
12-Month Price Trajectory — April 2025 to April 2026
Weekly tracked prices showing price escalation across all 9 materials. Monthly averages shown. Tariff-affected materials show accelerated price jumps starting Q4 2025.
| Month | Steel/ton | Lumber/MBF | Copper/lb | HVAC/unit | Concrete/yd | Roofing/sq | Drywall/sheet | Plumb. Cu/10ft | Elec. Wire/250ft |
|---|---|---|---|---|---|---|---|---|---|
| Apr 2025 | $1,267 | $409 | $3.96 | $1,629 | $153 | $79.99 | $12.86 | $23.15 | $60.16 |
| May 2025 | $1,258 | $386 | $3.95 | $1,656 | $153 | $80.37 | $12.99 | $23.53 | $60.82 |
| Jun 2025 | $1,257 | $385 | $4.03 | $1,700 | $154 | $81.19 | $12.90 | $23.63 | $61.04 |
| Jul 2025 | $1,267 | $404 | $4.04 | $1,716 | $155 | $81.54 | $13.03 | $23.77 | $61.58 |
| Aug 2025 | $1,298 | $388 | $4.15 | $1,703 | $157 | $83.08 | $13.16 | $24.20 | $62.40 |
| Sep 2025 | $1,355 | $398 | $4.22 | $1,718 | $150 | $85.43 | $13.36 | $24.62 | $64.77 |
| Oct 2025 | $1,393 | $411 | $4.35 | $1,750 | $154 | $87.39 | $13.57 | $25.30 | $66.26 |
| Nov 2025 | $1,471 | $409 | $4.51 | $1,802 | $154 | $89.82 | $13.94 | $26.21 | $68.70 |
| Dec 2025 | $1,491 | $412 | $4.53 | $1,798 | $152 | $92.35 | $14.06 | $26.83 | $69.92 |
| Jan 2026 | $1,480 | $421 | $4.53 | $1,770 | $154 | $93.10 | $14.00 | $27.25 | $70.83 |
| Feb 2026 | $1,516 | $426 | $4.64 | $1,801 | $155 | $94.51 | $14.18 | $27.19 | $71.99 |
| Mar 2026 | $1,570 | $451 | $4.79 | $1,825 | $155 | $95.02 | $14.34 | $27.39 | $71.37 |
| Apr 2026 | $1,602 | $476 | $4.84 | $1,842 | $164 | $93.58 | $14.44 | $28.03 | $71.78 |
Source: BuildStackHub material price tracking database. Monthly averages of weekly observations. 542 total data points across 9 materials, April 2025–April 2026.
Red = tariff-affected materials | Orange = market-driven increases | Data: BuildStackHub, 542 tracked observations
How Tariffs Translate to Project Cost Increases
Estimated tariff-driven cost additions by project type, based on BuildStackHub estimator material breakdowns.
| Project Type | Steel Exposure | Copper Exposure | HVAC Exposure | Est. Tariff Impact | Pre-Tariff Budget | Est. Impact % |
|---|---|---|---|---|---|---|
| Single-Family Home (2,000 sqft) | Low (wood frame) | Medium (wiring + plumbing) | 1–2 units | +$4,200–$7,800 | $280,000–$420,000 | +1.5–2.8% |
| Commercial Office Build-Out (5,000 sqft) | Medium (structural) | High (conduit, wiring) | 2–4 units | +$11,000–$22,000 | $350,000–$600,000 | +2.5–4.5% |
| Steel-Frame Warehouse (10,000 sqft) | Very High | Low | Medium | +$28,000–$55,000 | $500,000–$900,000 | +4.5–7% |
| Kitchen Remodel | None | Low (plumbing) | Optional | +$400–$1,200 | $35,000–$80,000 | +0.8–2% |
| Full Electrical Rewire (2,000 sqft) | None | Very High | None | +$1,800–$3,400 | $8,000–$18,000 | +15–22% |
Estimates based on BuildStackHub material breakdowns by project type. Tariff impact calculated using current USITC Section 232 (steel 25%) and Section 301 (copper/HVAC 7.5–10%) rates. Actual impact varies by project specifications.
Frequently Asked Questions About Construction Tariffs
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How much do tariffs add to construction costs in 2026?2026 tariffs add materially different amounts by material. Structural steel carries a 25% tariff adding approximately $395/ton (base $1,580 → $1,975/ton). HVAC equipment carries a 10% tariff adding $185 per ton of residential capacity (base $1,850 → $2,035). Copper wire and plumbing copper both carry a 7.5% tariff. For a typical 2,000 sq ft home, tariff-impacted materials add an estimated $3,500–$7,500 to material costs compared to pre-tariff pricing, per BuildStackHub estimator data.
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How much has steel gone up due to tariffs in 2026?Structural steel carries a 25% Section 232 tariff in 2026. Based on BuildStackHub's weekly tracked data, structural steel was $1,267/ton in April 2025 and reached $1,598/ton by April 2026 — a 26.1% increase. The tariff-adjusted price using the 25% rate is $1,975/ton. Market price appreciation beyond the tariff rate reflects sustained demand and supply chain adjustments. For a steel-frame commercial building, tariff impact alone adds $8–$18/sqft depending on steel intensity.
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Do tariffs affect lumber prices in 2026?Lumber framing does not carry a standalone tariff under current 2026 policy. However, BuildStackHub's weekly tracking shows lumber framing prices rose 34.8% from April 2025 ($409/MBF) to April 2026 ($476/MBF), driven by housing demand, mill capacity, and Canadian softwood lumber duties. Lumber price increases are market-driven, not Section 232/301 tariff-driven, in the current period.
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How do tariffs affect HVAC pricing for contractors?HVAC equipment carries a 10% tariff in 2026 on imported components. BuildStackHub's current tariff-adjusted price is $2,035/ton of residential capacity (base $1,850, tariff adds $185). For a typical 3-ton residential system, this translates to a $555 tariff surcharge per unit. HVAC contractors should factor this into bids — equipment prices have risen 13.1% from April 2025 to April 2026 including both tariff and market appreciation.
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Which construction materials are NOT affected by tariffs in 2026?As of May 2026, BuildStackHub's tracking shows zero tariff surcharge on concrete (ready-mix), lumber (framing), drywall (gypsum board), and roofing shingles. These materials have still increased in price due to market forces: concrete up 7.2%, drywall up 12.3%, roofing shingles up 17.0%, and lumber up 34.8% from April 2025 to April 2026 — but those increases are not tariff-driven.
Methodology
Data Collection & Tariff Calculation
Tracking period: April 13, 2025 through May 3, 2026 (weekly observations). Total: 542 data points across 9 materials.
Materials tracked: Structural steel (per ton), lumber framing (per MBF), copper wire (per lb), HVAC equipment (per ton capacity), concrete ready-mix (per cubic yard), roofing shingles (per square), drywall 4x8 sheets, plumbing copper 3/4in (per 10ft section), electrical wire 12 AWG (per 250ft roll).
Tariff rates applied:
- Structural steel: 25% — Section 232 National Security Tariff on steel mill products
- HVAC equipment: 10% — Section 301 tariff on HVAC components with high Chinese import content
- Copper wire, electrical wire, plumbing copper: 7.5% — Section 301 tariff on copper products
- Concrete, lumber, drywall, roofing shingles: 0% — not subject to Section 232 or Section 301 tariffs
Tariff-adjusted price formula: base_price × (1 + tariff_rate). Base prices from BuildStackHub's material estimating database, cross-referenced with BLS PPI data.
12-month change calculation: Monthly average of weekly observations, April 2025 vs. April 2026.
Data sources: BuildStackHub material price tracking database (primary), BLS Producer Price Index (cross-reference), USITC tariff schedules (rates).
Last updated: May 3, 2026.
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