Keep construction costs, professional fees, owner expenses, and contingencies in one working budget. This Excel workbook brings cost-detail entries into a linked summary so you can see your current budget and forecast final cost together.
Start with the example, then make it yours
The download includes an illustrative budget for a 2,500-square-foot single-family home in Ohio. It assumes moderate/custom quality, conventional construction, normal site conditions, and public utilities. Land acquisition and financing interest are excluded.
The figures are a worked planning example, not a bid or a current market estimate. Replace the sample allowances and project information with your own scope, local pricing, and project-specific costs before using the workbook to make decisions.
What’s in the workbook
- Budget Summary: linked totals for hard costs, soft costs, owner expenses, contingencies, and allowances, with current budget, forecast final cost, and variance.
- Cost Detail: 50 prepared rows for individual costs, categories, vendors, approved changes, commitments, payments, and remaining forecast costs.
- Read Me: instructions, the workbook’s color key, and notes on the budget calculations.
How to use the worksheet
- Save a working copy. Review the Read Me sheet, then update the project name, location, date, phase, and area on Budget Summary.
- Replace the example entries on Cost Detail. Choose the appropriate category for each item and enter your original budget and approved changes. Include site work, construction, professional fees, permits, owner purchases, and contingencies as applicable.
- Keep the formulas intact. Edit input cells rather than overwriting linked summary totals or calculated columns. The summary uses categories to roll up Cost Detail rows 5–54. If you need more rows, extend the summary formula ranges so the additional costs are included.
- Update commitments and forecasts. Enter total awarded or committed amounts and any additional costs still expected. Record payments separately for tracking.
- Review the summary regularly. Compare the forecast with your current budget after bids, scope changes, and new commitments. Save dated versions so decisions can be traced.
Understand the totals
- Current budget = original budget + approved changes.
- Forecast final = committed amounts + forecast to complete. Enter only additional amounts not already included in commitments in Forecast to Complete to avoid counting the same cost twice.
- Paid to date tracks payments separately; it is not deducted from commitments in the forecast calculation.
- Variance = current budget − forecast final. A positive value is within budget; a negative value indicates a forecast overrun.
The summary also includes an alternates area. Accepted alternate amounts do not automatically flow into the main budget: record their impact as an approved change on Cost Detail when accepted, taking care to include each cost only once.
Build a complete project budget
Use the worksheet alongside your project scope and estimates. Check what each contractor or consultant includes, identify exclusions, and keep allowances and contingencies visible. Add land, financing interest, or other excluded costs to your working copy if they are part of your total project budget.
For the broader planning process, read the house construction cost guide and use the Project Planning Checklist to track decisions from early planning through closeout.