Conceptual House Plan for Renovation

I'm looking for a professional architect or designer to create a conceptual house plan for an upcoming renovation project. The primary focus of this renovation will be structural changes, specifically to the walls and roof of the house. The main goals for these changes are to improve the home's aesthetics, increase its energy efficiency, and expand the living space.

Ideal skills and experience for the job include:
- Extensive knowledge in architectural design and structural changes
- Proven experience in interior and exterior redesign
- Expertise in energy-efficient design
- Ability to create plans for expanding living spaces

Please provide relevant samples of your previous work in your bid. Thank you.