New duplex house design

Here's a modern duplex house design concept:

Name: Harmony Duplex

Layout:

Exterior:

Interior:

Design Elements:

Sustainability Features:

Floor Plan:

Here is a rough floor plan of the Harmony Duplex:

Unit 1:

Unit 2:

Total Living Area: 3,000 sqft

Total Square Footage: 4,200 sqft

This is just one example of a modern duplex house design. The design can be modified to fit your specific needs and preferences.