{
  "slug": "lawn-seeding-cost",
  "title": "Lawn Seeding Cost Calculator",
  "heading": "Lawn Seeding Cost Calculator",
  "category": "financial",
  "url": "https://www.revenuelab.fyi/toolbox/lawn-seeding-cost",
  "summary": "Grass seed, starter fertilizer, straw mulch, and labor for overseeding or new lawns.",
  "description": "Seeding a lawn from scratch or overseeding a thin one costs more than just the seed bag — a full job typically includes seed at a per-pound coverage rate, starter fertilizer, straw or hydro-mulch to hold moisture and prevent erosion, and labor for spreading and light tilling or aeration prep. This calculator uses your lawn's square footage and a seeding rate (which varies by grass type — cool-season blends like tall fescue need more seed per square foot than warm-season Bermuda) to size the seed cost, then adds fertilizer and mulch on a per-square-foot basis plus labor. 2026 US national averages run about $0.15-$0.45 per square foot for DIY material costs and $0.50-$1.50 per square foot if you hire a lawn care company to do a full seeding job including aeration and starter fertilizer. New lawn installs from bare dirt run toward the higher end since they also need topsoil prep; overseeding an existing lawn runs toward the lower end.",
  "formula": "Seed Cost = (Sq Ft / Coverage per lb) × Price per lb. Total = Seed Cost + (Sq Ft × Fertilizer Rate) + (Sq Ft × Mulch Rate) + Labor.",
  "dateModified": "2026-09-06",
  "run_url": "https://www.revenuelab.fyi/api/public/calc?tool=lawn-seeding-cost",
  "inputs": [
    {
      "id": "sqft",
      "label": "Lawn area",
      "kind": "number",
      "hint": null,
      "default": 5000,
      "unit": "sq ft",
      "min": 100,
      "max": 100000
    },
    {
      "id": "coveragePerLb",
      "label": "Seed coverage rate",
      "kind": "number",
      "hint": null,
      "default": 200,
      "unit": "sq ft/lb",
      "min": 50,
      "max": 400
    },
    {
      "id": "seedPricePerLb",
      "label": "Seed price",
      "kind": "number",
      "hint": null,
      "default": 4.5,
      "unit": "$/lb",
      "min": 1.5,
      "max": 15
    },
    {
      "id": "fertilizerRate",
      "label": "Starter fertilizer cost",
      "kind": "number",
      "hint": null,
      "default": 0.05,
      "unit": "$/sq ft",
      "min": 0,
      "max": 0.2
    },
    {
      "id": "mulchRate",
      "label": "Straw mulch cost",
      "kind": "number",
      "hint": null,
      "default": 0.06,
      "unit": "$/sq ft",
      "min": 0,
      "max": 0.25
    },
    {
      "id": "laborCost",
      "label": "Labor (0 if DIY)",
      "kind": "number",
      "hint": null,
      "default": 0,
      "unit": "$",
      "min": 0,
      "max": 5000
    }
  ],
  "outputs": [
    {
      "id": "totalCost",
      "label": "Total seeding project cost",
      "format": "currency",
      "hint": null,
      "primary": true
    },
    {
      "id": "seedLbs",
      "label": "Seed needed",
      "format": "decimal",
      "hint": null,
      "primary": false
    },
    {
      "id": "seedCost",
      "label": "Seed cost",
      "format": "currency",
      "hint": null,
      "primary": false
    },
    {
      "id": "perSqft",
      "label": "Cost per sq ft",
      "format": "currency",
      "hint": null,
      "primary": false
    }
  ],
  "worked_example": {
    "inputs": [
      "Lawn area: 5000 sq ft",
      "Seed coverage rate: 200 sq ft/lb",
      "Seed price: 4.5 $/lb",
      "Starter fertilizer cost: 0.05 $/sq ft",
      "Straw mulch cost: 0.06 $/sq ft",
      "Labor (0 if DIY): 0 $"
    ],
    "outputs": [
      "Total seeding project cost: $663",
      "Seed needed: 25",
      "Seed cost: $113",
      "Cost per sq ft: $0.133"
    ]
  },
  "how_to": {
    "title": "How to use this",
    "steps": [
      "Enter lawn area (sq ft).",
      "Enter seed coverage rate (sq ft/lb).",
      "Enter seed price ($/lb).",
      "Enter starter fertilizer cost ($/sq ft).",
      "Enter straw mulch cost ($/sq ft).",
      "Enter labor (0 if diy) ($).",
      "Read your total seeding project cost 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": {
        "sqft": 3000,
        "coveragePerLb": 120,
        "seedPricePerLb": 2.6999999999999997,
        "fertilizerRate": 0.03,
        "mulchRate": 0.036,
        "laborCost": 0
      }
    },
    {
      "name": "Typical",
      "description": "Defaults — the most common real-world setup.",
      "values": {
        "sqft": 5000,
        "coveragePerLb": 200,
        "seedPricePerLb": 4.5,
        "fertilizerRate": 0.05,
        "mulchRate": 0.06,
        "laborCost": 0
      }
    },
    {
      "name": "Ambitious",
      "description": "Higher-end numbers — what if things really pop?",
      "values": {
        "sqft": 8000,
        "coveragePerLb": 320,
        "seedPricePerLb": 7.2,
        "fertilizerRate": 0.08000000000000002,
        "mulchRate": 0.096,
        "laborCost": 0
      }
    }
  ],
  "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": "How much grass seed do I need per 1,000 square feet?",
      "a": "For overseeding an existing lawn, most cool-season blends call for 3-5 lbs per 1,000 sq ft; for a brand new lawn from bare soil, that rate roughly doubles to 6-10 lbs per 1,000 sq ft since you're establishing full coverage rather than filling gaps."
    },
    {
      "q": "Is hydroseeding cheaper than traditional seed and straw?",
      "a": "Hydroseeding usually costs somewhat more per square foot than seed-and-straw for small residential lawns, but it establishes faster and more evenly, which can make it cost-competitive on larger properties or slopes where erosion control is a bigger concern."
    },
    {
      "q": "Do I need to aerate before overseeding?",
      "a": "Aerating first significantly improves seed-to-soil contact and germination rates, especially on compacted or clay soil, and many lawn care companies bundle core aeration with overseeding for this reason — it's not required but it meaningfully raises success rates."
    },
    {
      "q": "How long until a newly seeded lawn is ready to walk on?",
      "a": "Most cool-season grasses need 3-4 weeks of establishment before regular foot traffic, though light walking can usually resume after the first two mowings, typically 3-4 weeks post-seeding depending on soil temperature and watering consistency."
    }
  ],
  "related": [
    "https://www.revenuelab.fyi/toolbox/mulch-delivery-cost",
    "https://www.revenuelab.fyi/toolbox/sprinkler-system-installation-cost",
    "https://www.revenuelab.fyi/toolbox/landscape-lighting-installation-cost"
  ],
  "license": "CC-BY-4.0",
  "citation": "RevenueLab — Lawn Seeding Cost Calculator (https://www.revenuelab.fyi/toolbox/lawn-seeding-cost)"
}