Custom Climate-Controlled Office/Gym Building

I'm seeking a skilled contractor to design and construct a unique accessory building on my property. This building will serve dual purposes as an office and a gym, with a bathroom and stairs to a loft area for storing seasonal items.

I want to have a vaulted ceiling at least on the side where the loft area is located...

Key Requirements:
- Design and construction of a dual-purpose office and gym building
- Sufficient storage space for seasonal items
- Installation of a reliable climate-control system throughout the building

Ideal Skills and Experience:
- Proven track record in designing and constructing similar accessory buildings
- Expertise in climate-control system installation
- Strong understanding of creating functional, multi-purpose spaces