Costs vary significantly by scope and complexity. Production-grade baseboard and door casing for a 2,500 sq ft home typically runs $4,000–$8,000 installed. Crown molding adds $2,000–$6,000+ depending on room count and ceiling height. Board and batten or wainscoting for a single room runs $800–$3,000 installed. Custom built-in bookshelves run $3,000–$10,000+ depending on size and complexity. Coffered ceilings run $4,000–$15,000+ for a single room. Fireplace mantel surrounds run $1,500–$8,000+. RainFire Builders provides detailed line-item estimates covering material, labor, and finishing for every millwork scope.