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Extensions and additions — General contractor
Describe the space to be added, its intended use and how it should connect to the existing building. Provide measured drawings where available and identify access restrictions, drainage or services near the proposed footprint. State whether internal fit-out is included or only a weather-tight shell.
Service scope
Construction of additional building space connected to an existing property. The work combines the new structure with interfaces to existing foundations, walls, roof and services, with design and approval requirements determined for the actual project and jurisdiction.
What is normally included
- Construction of a designed extension
- Connections to the existing building
- Coordination of agreed internal completion
What is not included
- Assumed permission to extend
- Foundation or structural design based only on floor area
Typical tasks
- Review the extension design and scope
- Assess existing-building interfaces
- Plan site access and temporary protection
- Construct the agreed addition
- Coordinate connection and completion records
What to include in your brief
- Proposed footprint and use
- Existing and proposed plans
- Design and approval status
- Site access and boundary constraints
- Shell-only or fully finished scope
Choosing the right professional
Compare the same level of completion and design assumptions. Ask how the connection to the existing property will be protected and who resolves structural, drainage and service interfaces before building starts.
Important considerations
- Existing foundations or services can affect the design
- Occupied-property access can constrain construction sequencing
Related services
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