1. General Contractor: A construction business with a general contractor specializes in managing and overseeing the entire construction process, including drawing up plans, obtaining permits, hiring and coordinating subcontractors, supervising the construction progress, and ensuring a quality final product.

2. Building Renovations and Remodeling: Using carpentry and other construction skills, a business could offer services that involve renovating or remodeling existing buildings.

3. Commercial Construction: This business specializes in constructing new buildings, from restaurants to office buildings, and focuses on the commercial market.

4. Home Building: A business focusing on constructing residential homes would include services such as framing, roofing, drywall, and siding.

5. Demolition: Companies specializing in demolition can utilize their construction skills to demolish and remove existing structures.

6. Landscaping and Outdoor Construction: Utilizing construction skills, businesses can provide services such as building decks and patios, constructing fences and pathways, and installing lighting and irrigation systems.

7. Home Improvement and Repair: Construction workers can specialize in providing services such as repairing home foundations, replacing broken windows and installing new doors.

8. Masonry: Companies specializing in masonry-related services can provide services such as bricklaying and stone masonry.