Complete Cost Categories & Estimation Framework
Professional project cost estimation requires systematic accounting of all categories. Missing even minor components leads to underpricing and reduced profitability.
Calculate complete project budgets including materials, labor, overhead, and profit margins with comprehensive cost analysis and budget optimization.
Add materials, labor, and project parameters to calculate comprehensive project costs and budget analysis for your woodworking project.
Professional project cost estimation requires systematic accounting of all categories. Missing even minor components leads to underpricing and reduced profitability.
Total Cost = (Materials + Labor + Overhead) x (1 + Contingency%) x (1 + Profit%) + Tax | Project Type | Risk Level | Contingency Range | Notes |
|---|---|---|---|
| Repeat Design (Built Before) | Low | 10-12% | Known process, predictable costs |
| Standard Custom (Proven Methods) | Moderate | 15-18% | New design, established techniques |
| Complex Custom (New Techniques) | High | 20-25% | Unknown variables, learning curve |
| Experimental / Artistic | Very High | 25-35% | Unproven methods, material risks |
| Historic Restoration | Very High | 30-40% | Unknown conditions, matching challenges |
Professional bidding balances accurate cost recovery with competitive market positioning. Use fixed-price for well-defined projects, time-and-materials for unknown scope, and phased bidding for large projects.
Expenses directly attributable to a specific project: materials, direct labor, subcontractor costs. Also called Cost of Goods Sold (COGS).
Indirect business expenses not tied to specific projects: rent, utilities, insurance, equipment depreciation, administrative costs. Allocated across all projects.
Reserve added to project budget for unexpected costs. Covers material defects, design changes, labor overruns, and unforeseen complications. Typically 10-25%.
Percentage added above all costs to generate business profit. Covers business growth, owner compensation, slow periods, and reinvestment. Minimum viable: 15-18%.
Revenue level where total income equals total costs (zero profit). Below break-even, business loses money. Required Revenue = Fixed Costs / Contribution Margin %.
Overhead includes shop rent, utilities, insurance, tool maintenance, and administrative costs. Calculate monthly overhead expenses and divide by billable hours. Typical overhead ranges from 25-40% of direct labor costs depending on shop size and efficiency.
Profit margins vary by project type: Custom furniture 20-35%, Production work 15-25%, Repair work 25-40%. Consider market competition, project complexity, and business goals when setting margins.
Include 10-20% contingency for most projects. Complex custom work may need 25-30%. New techniques or unfamiliar projects require larger buffers. Track actual vs. estimated costs to refine future estimates.
Yes, always include design, planning, and consultation time. This can be 10-25% of total project time for custom work. Consider charging separately for extensive design work or include it in your hourly rate.
Include price escalation clauses for long projects, lock in material prices when possible, and add 5-15% buffer for price volatility. Consider timing purchases during market lows and building supplier relationships.
Include delivery fees, permits, disposal costs, specialty hardware, finishing materials, and tool wear. Do not forget travel time, setup/cleanup, and potential rework. Track these costs to improve future estimates.