Custom Home Costs
What a custom home costs in 2026
The full picture: per-sq-ft ranges, where the budget actually goes, and the finish tiers that move the number.
Custom home cost in Puget Sound WA (2026): $250–$450 per sq ft of finished space. A 2,500 sq ft custom home typically costs $625,000–$1,125,000 for construction, plus design/engineering (8–12%), permits ($15,000–$40,000) and site work. Regional averages — not a quote.
| Finish Tier | Cost / sq ft | What It Looks Like |
|---|---|---|
| Comfort | $250–$320 | Quality stock cabinets, LVP/carpet, standard fixtures |
| Premium | $320–$380 | Semi-custom cabinets, quartz, hardwood, upgraded tile |
| Luxury | $380–$450+ | Custom millwork, stone, designer fixtures, smart systems |
| Phase | Share | Includes |
|---|---|---|
| Site & foundation | 12–18% | Excavation, footings, foundation, utilities |
| Framing & shell | 20–25% | Framing, roof, windows, exterior finishes |
| MEP systems | 15–18% | Electrical, plumbing, HVAC |
| Interior finishes | 28–35% | Drywall, cabinets, counters, flooring, paint |
| Design & permits | 8–12% | Architecture, engineering, city fees |
What moves the number
- Site: slope, soil, and utility distance can swing site costs 2×
- Complexity: corners, rooflines and cantilevers cost more than simple forms
- City: Seattle runs ~12% above Everett; Marysville ~3% below
- Timeline: 12–18 months design-to-keys is realistic for 2026
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