Duplex Construction Cost Guide for Texas 2026
Construction cost in Texas for a duplex varies by size, location, finishes, and site factors. The main cost drivers include land costs, foundation and framing, utility connections, and permitting. This guide provides typical price ranges in USD with clear low–average–high estimates to help budgeting.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Project total (duplex) | $350,000 | $520,000 | $900,000 | Assumes mid-range finishes; 2,400–3,000 sq ft total |
Overview Of Costs
Cost widely varies by lot price, size, and finish level. In Texas, a typical duplex build falls in a broad range due to differing land costs and regional supply. The project can be broken into land acquisition, site work, foundation, structural framing, exterior, interior, and systems. Per-square-foot estimates give a practical starting point, while total project ranges account for lot-specific add-ons.
Cost Breakdown
| Category | Low | Average | High | Notes | Assumptions |
|---|---|---|---|---|---|
| Land & site prep | $40,000 | $90,000 | $180,000 | Lot purchase, grading, drainage | Assumptions: urban fringe, flat lot, utility access |
| Foundation | $60,000 | $110,000 | $190,000 | Slab or crawl; code-compliant | data-formula=”labor_hours × hourly_rate”> |
| Framing & structure | $90,000 | $180,000 | $300,000 | Wood frame; two units | |
| Exterior & roofing | $40,000 | $90,000 | $180,000 | Siding, windows, roofing | |
| Interior finishes | $70,000 | $150,000 | $320,000 | Kitchen, baths, flooring, fixtures | |
| Mechanical, electrical, plumbing | $40,000 | $90,000 | $150,000 | HVAC, plumbing runs, wiring | |
| Permits & impact fees | $5,000 | $15,000 | $40,000 | County/state requirements | |
| Delivery, site utilities, disposal | $6,000 | $14,000 | $30,000 | Crane, trucks, concrete, waste | |
| Contingency & overhead | 5% | 10% | 15% | Owner-supplied items, changes | |
| Taxes | 0–3% | 6% | 12% | State/local taxes |
Assumptions: region, specs, labor hours.
What Drives Price
Regional demand, land costs, and permitting complexity drive the price. In Texas, the presence of competitive subcontractors, utility expansion, and local permit fees shape the bottom line. A larger footprint, premium finishes, or added soundproofing and energy upgrades raise costs quickly. Specific drivers to watch include lot readiness, foundation type (slab versus crawl), and roof height plus roof pitch.
Labor, Hours & Rates
Labor is a major portion of the duplex budget. Typical carpentry, electrical, and plumbing trades may range from $40–$100 per hour depending on trade and city. For a mid-scale duplex, expect several months of work with crews arriving in phases. A simple formula can approximate labor cost: data-formula=”labor_hours × hourly_rate”>
Regional Price Differences
Prices vary across Texas regions. In urban centers like Dallas or Austin, land and permit costs tend to be higher than in rural areas. In the table below, costs are shown with approximate deltas from a statewide baseline.
- Urban core: +15% to +25% on land, permits, and labor due to higher wages and fees.
- Suburban: baseline to +10% depending on lot costs.
- Rural: −5% to −15% on land and delivery, though material transport may affect margins.
Real-World Pricing Examples
Basic Scenario
Size: 2,000 sq ft total; modest finishes; slab foundation; standard fixtures. Labor: 6–8 months overall. Materials: mid-range; utilities shared between units. Total: $360,000–$420,000. Per unit: $180,000–$210,000.
Mid-Range Scenario
Size: 2,400–2,800 sq ft total; balanced finishes; crawl space; upgraded cabinets and lighting. Labor: 8–10 months. Total: $520,000–$680,000. Per unit: $260,000–$340,000.
Premium Scenario
Size: 3,000–3,600 sq ft total; premium exterior, granite, high-efficiency systems. Labor: 10–12 months. Total: $750,000–$1,000,000. Per unit: $375,000–$500,000.