The perimeter of theory in research is always focused on its topic and direction. It's better to focus on something specific. And under the topic, select and highlight certain concepts, and then-methodology.
This is how I understand the theoretical framework and conceptual framework in research.
For designing an ideal home project, we need to review and read many design magazines/books that feed us ideas for different styles of design: modern, traditional, vintage, etc. All these styles which are relevant to home design are the theoretical framework to support our interior home design project.
We know that our home will normally have many functional spaces: living space, foyer space, dry kitchen, wet kitchen, bedrooms, etc. For making a difference and creating a wow impact on this project, we develop the conceptual framework by blending some of the design styles that we have read cum some sustainable design elements/latest technologies to connect the spaces.
Eventually, a well-designed home with advanced technologies is created!