Modern Duplex Design with Estimation -- 2

I need a detailed design plan for a modern-style duplex, incorporating an outdoor patio. The design should be both aesthetic and functional.

Key Requirements:
- Modern architectural design for a duplex
- Inclusion of an outdoor patio in the design
- Detailed estimation of costs

Ideal Skills and Experience:
- Proven experience in duplex design
- Strong portfolio in modern architecture
- Expertise in cost estimation for construction projects

Please provide samples of previous work and a detailed proposal.