Owner-Led
Custom Homebuilding

Sienna Building Company is a Bend-based custom home builder led by Steven McDowell. Steven works directly with each client throughout planning, pricing, design coordination, and construction.

Rather than separating design decisions from construction realities, Sienna brings architecture, interior design, landscape design, budgeting, and building together through one coordinated process.

This approach gives clients clearer information earlier, better control over cost, and a home that feels intentional from the site plan through the final finishes.

What Clients Can Expect

  • Direct access to the builder

  • Actual bid-based budgeting

  • Coordinated architectural, interior, and landscape design

  • Hands-on construction oversight

  • Clear communication from planning through completion

“We hired Sienna to build a custom home in Caldera Springs and highly recommend this builder! Easily reachable, a pleasure to work with, honest, and very experienced.”

— Carin Ruiz

Modern house in a forested area with a driveway and landscaped yard, featuring multiple level roofs and large windows.