Home Renovation ROI Calculator

ANA›Life Services Authority›National Calculator Authority›Home Renovation ROI Calculator

.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }

Home Renovation ROI Calculator

Estimate the return on investment (ROI) for your home renovation project by comparing your costs against the expected increase in home value.

Current Home Value ($)

Total Renovation Cost ($)

Expected Home Value Increase ($)

Renovation Type

Custom / Enter My Own Kitchen Remodel (avg 60–80% ROI) Bathroom Remodel (avg 55–75% ROI) Deck Addition (avg 65–75% ROI) Roofing Replacement (avg 60–70% ROI) Window Replacement (avg 68–74% ROI) Siding Replacement (avg 75–83% ROI) Basement Finish (avg 50–75% ROI) Room Addition (avg 50–65% ROI)

Estimated Selling Costs (%) (agent fees, closing costs)

Financing / Interest Cost ($) (0 if paying cash)

Calculate ROI

function homCalc() { // --- Gather inputs --- const currentValue = parseFloat(document.getElementById('hom-current-value').value); const renoCost = parseFloat(document.getElementById('hom-reno-cost').value); const valueIncrease = parseFloat(document.getElementById('hom-value-increase').value); const sellingCostPct = parseFloat(document.getElementById('hom-selling-costs').value); const financingCost = parseFloat(document.getElementById('hom-financing-cost').value) || 0; const renoType = document.getElementById('hom-reno-type').value; const resultDiv = document.getElementById('hom-result');

// --- Validation --- const errors = []; if (isNaN(currentValue) || currentValue 20) errors.push("Selling costs must be between 0% and 20%."); if (financingCost currentValue * 0.5) errors.push("Value increase seems unrealistically high (> 50% of current home value). Please double-check.");

if (errors.length > 0) { resultDiv.style.display = 'block'; resultDiv.innerHTML = 'Please fix the following:' + errors.map(e => '').join('') + ''; return; }

// --- Core Calculations --- // Total investment = renovation cost + financing cost const totalInvestment = renoCost + financingCost;

// Net value gain after selling costs on the incremental value // Selling costs apply to the full sale price, but we attribute the // proportional selling cost to the renovation-driven value increase. const sellingCostOnIncrease = valueIncrease * (sellingCostPct / 100); const netGain = valueIncrease - sellingCostOnIncrease;

// ROI = (Net Gain - Total Investment) / Total Investment × 100 const roi = ((netGain - totalInvestment) / totalInvestment) * 100;

// Simple ROI (ignoring selling costs) — commonly cited figure const simpleRoi = (valueIncrease / renoCost) * 100;

// Cost recouped = value increase / renovation cost × 100 const costRecouped = (valueIncrease / renoCost) * 100;

// Net profit / loss const netProfitLoss = netGain - totalInvestment;

// New home value const newHomeValue = currentValue + valueIncrease;

// Benchmark ROI ranges by type const benchmarks = { kitchen: { low: 60, high: 80, label: "Kitchen Remodel" }, bathroom: { low: 55, high: 75, label: "Bathroom Remodel" }, deck: { low: 65, high: 75, label: "Deck Addition" }, roofing: { low: 60, high: 70, label: "Roofing Replacement" }, windows: { low: 68, high: 74, label: "Window Replacement" }, siding: { low: 75, high: 83, label: "Siding Replacement" }, basement: { low: 50, high: 75, label: "Basement Finish" }, addition: { low: 50, high: 65, label: "Room Addition" }, custom: null };

// --- Formatting helpers --- const fmt = v => v.toLocaleString('en-US', { minimumFractionDigits: 0, maximumFractionDigits: 0 }); const fmtD = v => '$' + fmt(Math.abs(v)); const fmtP = v => v.toFixed(1) + '%';

// --- ROI rating --- let rating, ratingColor; if (costRecouped >= 80) { rating = "Excellent"; ratingColor = "#2e7d32"; } else if (costRecouped >= 60) { rating = "Good"; ratingColor = "#388e3c"; } else if (costRecouped >= 40) { rating = "Fair"; ratingColor = "#f57c00"; } else { rating = "Poor"; ratingColor = "#c62828"; }

// --- Benchmark comparison --- let benchmarkHTML = ''; if (renoType !== 'custom' && benchmarks[renoType]) { const b = benchmarks[renoType]; const yourROI = costRecouped; let comparison; if (yourROI >= b.high) comparison = above the typical range (${b.low}–${b.high}%); else if (yourROI >= b.low) comparison = within the typical range (${b.low}–${b.high}%); else comparison = below the typical range (${b.low}–${b.high}%); benchmarkHTML = `

Industry Benchmark (${b.label}) ${b.low}–${b.high}%

Your Project vs. Benchmark ${comparison} `; }

// --- Build output --- resultDiv.style.display = 'block'; resultDiv.innerHTML = ` ### Renovation ROI Results

MetricValue

Current Home Value ${fmtD(currentValue)}

Renovation Cost ${fmtD(renoCost)}

Financing Cost ${fmtD(financingCost)}

Total Investment ${fmtD(totalInvestment)}

Expected Value Increase ${fmtD(valueIncrease)}

New Home Value ${fmtD(newHomeValue)}

Selling Costs on Increase (${fmtP(sellingCostPct)}) −${fmtD(sellingCostOnIncrease)}

Net Value Gain (after selling costs) ${fmtD(netGain)}

Cost Recouped (Simple ROI) ${fmtP(costRecouped)}

Net ROI (incl. all costs) ${roi >= 0 ? '+' : '−'}${fmtP(Math.abs(roi))}

Net Profit / Loss = 0 ? '#2e7d32' : '#c62828'}"> ${netProfitLoss >= 0 ? '+' : '−'}${fmtD(netProfitLoss)}

ROI Rating ${rating}

${benchmarkHTML}

Interpretation: You expect to recoup ${fmtP(costRecouped)} of your renovation cost through increased home value. After accounting for selling costs and financing, your net ${netProfitLoss >= 0 ? 'profit' : 'loss'} is ${netProfitLoss >= 0 ? '+' : '−'}${fmtD(netProfitLoss)}. ${costRecouped `; }

#### Formulas Used

Cost Recouped (Simple ROI): Cost Recouped (%) = (Expected Value Increase ÷ Renovation Cost) × 100

Net Value Gain: Net Value Gain = Value Increase − (Value Increase × Selling Cost %)

Total Investment: Total Investment = Renovation Cost + Financing Cost

Net ROI: Net ROI (%) = ((Net Value Gain − Total Investment) ÷ Total Investment) × 100

Net Profit / Loss: Net Profit/Loss = Net Value Gain − Total Investment

#### Assumptions & References

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References

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