Why We Added a Duplex Template

 Budgeting a duplex can be trickier than it looks. At first glance, it may seem like you can simply take a single-family new construction budget and double everything. But that is not always the case.

Some costs do need to increase because you are building two units. Other costs stay the same because you are still working on one lot, with one building, one site plan, one survey, and one overall development. This template helps you think through those details more clearly.

Built-In Reminders for Easy-to-Miss Costs

One of the biggest reasons budgets get blown is not always because a line item was slightly underpriced. Often, it is because a line item was missed completely. That is why this duplex template includes important reminder line items for costs that may or may not apply to your specific project.

For example, stormwater engineering and stormwater-related work can be easy to overlook. Not every project will need it, but duplex projects can create more land disturbance and impervious surface area, which may trigger additional permit or engineering requirements. If it applies to your project, you can add the correct cost. If it does not apply, you can remove it from your budget.

The point is to make sure you think about it before the project starts.

Built for Budgeting, Scope, and Scheduling

This template is more than a simple cost list. It is designed to help you organize the project from beginning to end, including:

• Budget categories
• Detailed line items
• Scope of work structure
• Cost allowances
• Project phases
• Integrated schedule items
• Items you can adjust based on your own market and contractors

The goal is to help you plan the project more clearly, track costs more effectively, and avoid starting with a budget that is missing important details.

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