Plumbing & Mechanical Drawings for Large Home

I need professional plumbing and mechanical drawings for a 5800 sq ft home. I already have the CAD drawings for the architectural layout.

Requirements:
- Plumbing Drawings: Water supply, drainage, and ventilation
- Mechanical Drawings: HVAC system, ductwork layout, and heating system
- Possible integration between plumbing and mechanical systems

Ideal Skills and Experience:
- Expertise in plumbing and mechanical system design
- Proficiency in CAD software
- Experience with large residential projects
- Knowledge of building codes and regulations

Please provide samples of similar work done.