Simple Architectural Design and 3d Model for a Basic Building with Site Plan

We are seeking a skilled freelancer to develop a simple architectural design and 3D model for a basic building. The project requires the creation of fundamental structural elements including walls, a roof, floors, a staircase, windows, and doors. The design should be straightforward, focusing on the most essential components of a building.

Key deliverables include:
- A basic architectural plan incorporating all specified elements.
- A 3D model of the building.
- Integration of the building into an invented terrain, demonstrating basic site planning.
- A functional layout indicating the proposed use for each room within the building.

The goal is to create a clear and simple representation of a functional building, suitable for initial conceptualization. No complex details or advanced features are required, just a solid foundation for a basic structure.