Cost-Efficient, Modern Single-Story Steel House Design

I'm looking for an expert in lightweight steel structure design to help me create a cost-effective, modern single-story house.

Key Requirements:
- Design a lightweight steel structure for a single-story house
- Prioritize cost-effectiveness in the design
- Incorporate a modern aesthetic in the design

Ideal Skills and Experience:
- Extensive experience in steel structure design
- Strong understanding of cost-effective building strategies
- Portfolio of modern architectural designs