{
  "slug": "diy-vs-contractor-cost",
  "title": "DIY vs Contractor Cost Calculator",
  "heading": "DIY vs Hiring a Contractor Calculator",
  "category": "financial",
  "url": "https://www.revenuelab.fyi/toolbox/diy-vs-contractor-cost",
  "summary": "Weigh the money you save doing it yourself against the value of your time and risk of mistakes.",
  "description": "DIY saves the labor markup a contractor charges, but costs you time, tool rental or purchase, and the risk of redo costs if something goes wrong. This calculator compares a contractor quote against your own materials cost plus tool costs plus the dollar value of the hours you'll spend, so you can see the real breakeven — not just the sticker price difference.",
  "formula": "DIY Total = Materials + Tool Cost + (Hours × Your Hourly Value) + Mistake Risk Buffer. Contractor Total = Contractor Quote.",
  "dateModified": "2026-09-06",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=diy-vs-contractor-cost",
  "inputs": [
    {
      "id": "contractorQuote",
      "label": "Contractor quote",
      "kind": "number",
      "hint": null,
      "default": 3200,
      "unit": "$",
      "min": 0,
      "max": null
    },
    {
      "id": "diyMaterials",
      "label": "DIY materials cost",
      "kind": "number",
      "hint": null,
      "default": 1400,
      "unit": "$",
      "min": 0,
      "max": null
    },
    {
      "id": "toolCost",
      "label": "Tools you need to buy/rent",
      "kind": "number",
      "hint": null,
      "default": 200,
      "unit": "$",
      "min": 0,
      "max": null
    },
    {
      "id": "hoursNeeded",
      "label": "Your estimated hours",
      "kind": "number",
      "hint": null,
      "default": 20,
      "unit": "hrs",
      "min": 0,
      "max": null
    },
    {
      "id": "hourlyValue",
      "label": "Value of your time",
      "kind": "number",
      "hint": null,
      "default": 40,
      "unit": "$/hr",
      "min": 0,
      "max": null
    },
    {
      "id": "mistakeRiskPct",
      "label": "Redo/mistake risk buffer",
      "kind": "number",
      "hint": null,
      "default": 10,
      "unit": "%",
      "min": 0,
      "max": 100
    }
  ],
  "outputs": [
    {
      "id": "winner",
      "label": "Lower total cost option",
      "format": "raw",
      "hint": null,
      "primary": true
    },
    {
      "id": "diyTotal",
      "label": "DIY total cost (incl. your time)",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "contractorTotal",
      "label": "Contractor total cost",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "diff",
      "label": "Difference",
      "format": "currency",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Contractor quote: 3200 $",
      "DIY materials cost: 1400 $",
      "Tools you need to buy/rent: 200 $",
      "Your estimated hours: 20 hrs",
      "Value of your time: 40 $/hr",
      "Redo/mistake risk buffer: 10 %"
    ],
    "outputs": [
      "Lower total cost option: DIY",
      "DIY total cost (incl. your time): $2,640",
      "Contractor total cost: $3,200",
      "Difference: $560"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter contractor quote ($).",
      "Enter diy materials cost ($).",
      "Enter tools you need to buy/rent ($).",
      "Enter your estimated hours (hrs).",
      "Enter value of your time ($/hr).",
      "Enter redo/mistake risk buffer (%).",
      "Read your lower total cost option on the right — it updates as you type.",
      "Hit Share to keep the scenario or send it to someone."
    ]
  },
  "scenarios": [
    {
      "name": "Conservative",
      "description": "Lower-end numbers — what if things land soft?",
      "values": {
        "contractorQuote": 1900,
        "diyMaterials": 850,
        "toolCost": 120,
        "hoursNeeded": 12,
        "hourlyValue": 25,
        "mistakeRiskPct": 5
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "contractorQuote": 3200,
        "diyMaterials": 1400,
        "toolCost": 200,
        "hoursNeeded": 20,
        "hourlyValue": 40,
        "mistakeRiskPct": 10
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "contractorQuote": 5100,
        "diyMaterials": 2250,
        "toolCost": 320,
        "hoursNeeded": 32,
        "hourlyValue": 65,
        "mistakeRiskPct": 15
      }
    }
  ],
  "limitations": [
    "Results are estimates before tax, fees, and inflation unless an input explicitly covers them.",
    "Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.",
    "This is educational maths, not financial advice. Check anything contractual with the lender or your accountant."
  ],
  "faq": [
    {
      "q": "Why include the value of my own time?",
      "a": "Because time spent on a DIY project is time not spent working, resting, or on other projects — pricing it honestly, even at a modest hourly rate, prevents DIY from looking artificially cheap."
    },
    {
      "q": "What counts as a mistake risk buffer?",
      "a": "First-time DIYers commonly need to buy extra materials, redo a step, or eventually call a pro to fix a mistake — a 10-20% buffer captures that realistically instead of assuming a flawless first attempt."
    },
    {
      "q": "Are permits and code compliance factored in?",
      "a": "No — add permit fees to your contractor quote or DIY materials line as applicable; some jobs (electrical, structural) may also require licensed work regardless of cost."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/contractor-hourly-rate",
    "https://www.revenuelab.fyi/toolbox/repair-vs-replace-appliance"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — DIY vs Contractor Cost Calculator (https://www.revenuelab.fyi/toolbox/diy-vs-contractor-cost)"
}