Home Repair Budget Calculator
ANA›Life Services Authority›National Calculator Authority›Home Repair Budget 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 Repair Budget Calculator
Estimate your total home repair budget including labor, materials, permits, and a recommended contingency reserve.
Home Market Value ($)
Repair / Project Type
Minor Repairs (paint, fixtures, caulking) Moderate Repairs (flooring, plumbing, HVAC tune-up) Major Repairs (roof, foundation, full HVAC replacement) Full Renovation (kitchen, bathroom, addition) Custom — Enter Costs Manually
Materials Cost ($)
Labor Cost ($)
Permits & Inspections ($)
Contingency Buffer (%)
DIY Savings (% of labor you will do yourself)
Financing Interest Rate (% APR, 0 if paying cash)
Financing Term (months, 0 if paying cash)
Calculate Budget
(function(){ var typeSelect = document.getElementById('hom-repair-type'); var customSection = document.getElementById('hom-custom-section'); typeSelect.addEventListener('change', function(){ customSection.style.display = (this.value === 'custom') ? 'block' : 'none'; }); })();
function homCalc(){ var homeValue = parseFloat(document.getElementById('hom-home-value').value); var repairType = document.getElementById('hom-repair-type').value; var contingency = parseFloat(document.getElementById('hom-contingency').value); var diyPct = parseFloat(document.getElementById('hom-diy-pct').value); var finRate = parseFloat(document.getElementById('hom-financing-rate').value); var finMonths = parseFloat(document.getElementById('hom-financing-months').value); var resultDiv = document.getElementById('hom-result');
// ── Validation ────────────────────────────────────────────────────────────── if (isNaN(homeValue) || homeValue Please enter a valid home market value.'; return; } if (isNaN(contingency) || contingency 50){ resultDiv.innerHTML = 'Contingency must be between 0 and 50%.'; return; } if (isNaN(diyPct) || diyPct 100){ resultDiv.innerHTML = 'DIY savings must be between 0 and 100%.'; return; } if (isNaN(finRate) || finRate 30){ resultDiv.innerHTML = 'Financing rate must be between 0 and 30%.'; return; } if (isNaN(finMonths) || finMonths 360){ resultDiv.innerHTML = 'Financing term must be between 0 and 360 months.'; return; }
// ── Cost Benchmarks (% of home value, industry rule-of-thumb ranges) ──────── // Source: National Association of Home Builders & HomeAdvisor cost guides var materials, labor, permits;
if (repairType === 'minor'){ // 0.5% – 1% of home value; labor ≈ 40% of total, permits minimal var base = homeValue * 0.0075; materials = base * 0.60; labor = base * 0.40; permits = 0; } else if (repairType === 'moderate'){ // 1% – 3% of home value var base = homeValue * 0.02; materials = base * 0.55; labor = base * 0.40; permits = base * 0.05; } else if (repairType === 'major'){ // 3% – 7% of home value var base = homeValue * 0.05; materials = base * 0.50; labor = base * 0.42; permits = base * 0.08; } else if (repairType === 'renovation'){ // 10% – 20% of home value (kitchen/bath/addition) var base = homeValue * 0.15; materials = base * 0.48; labor = base * 0.44; permits = base * 0.08; } else { // custom materials = parseFloat(document.getElementById('hom-materials').value) || 0; labor = parseFloat(document.getElementById('hom-labor').value) || 0; permits = parseFloat(document.getElementById('hom-permits').value) || 0; if (materials Cost values cannot be negative.'; return; } }
// ── DIY Savings ───────────────────────────────────────────────────────────── // DIY reduces labor cost only var laborAfterDIY = labor * (1 - diyPct / 100); var diySavings = labor - laborAfterDIY;
// ── Base Project Cost ──────────────────────────────────────────────────────── var baseCost = materials + laborAfterDIY + permits;
// ── Contingency Reserve ────────────────────────────────────────────────────── // Contingency = baseCost × (contingency% / 100) var contingencyAmt = baseCost * (contingency / 100);
// ── Total Budget ───────────────────────────────────────────────────────────── var totalBudget = baseCost + contingencyAmt;
// ── Financing Cost (standard amortization) ─────────────────────────────────── // Monthly payment M = P × [r(1+r)^n] / [(1+r)^n − 1] var totalInterest = 0; var monthlyPayment = 0; var totalFinanced = 0; if (finRate > 0 && finMonths > 0){ var r = (finRate / 100) / 12; var n = finMonths; monthlyPayment = totalBudget * (r * Math.pow(1+r, n)) / (Math.pow(1+r, n) - 1); totalFinanced = monthlyPayment * n; totalInterest = totalFinanced - totalBudget; }
// ── 1% Annual Maintenance Rule Benchmark ───────────────────────────────────── var annualMaintBenchmark = homeValue * 0.01;
// ── ROI Estimate (resale value increase) ───────────────────────────────────── // Industry averages: minor 60-80%, moderate 50-70%, major 55-75%, renovation 60-80% var roiPct = {minor:0.70, moderate:0.60, major:0.65, renovation:0.70, custom:0.60}[repairType]; var estimatedROI = totalBudget * roiPct;
// ── Format helper ───────────────────────────────────────────────────────────── function fmt(n){ return '$' + n.toFixed(2).replace(/\B(?=(\d{3})+(?!\d))/g, ','); } function fmtPct(n){ return n.toFixed(1) + '%'; }
// ── Output ──────────────────────────────────────────────────────────────────── var finHtml = ''; if (finRate > 0 && finMonths > 0){ finHtml = 'Monthly Payment' + fmt(monthlyPayment) + '' + 'Total Interest Paid' + fmt(totalInterest) + '' + 'Total Financed Cost' + fmt(totalFinanced) + ''; } else { finHtml = 'Paying cash — no financing cost.'; }
resultDiv.innerHTML = '### Budget Estimate ' + '' + 'ItemAmount' + 'Materials' + fmt(materials) + '' + 'Labor (after DIY savings)' + fmt(laborAfterDIY) + '' + 'Permits & Inspections' + fmt(permits) + '' + 'DIY Savings−' + fmt(diySavings) + '' + 'Base Project Cost' + fmt(baseCost) + '' + 'Contingency Reserve (' + fmtPct(contingency) + ')' + fmt(contingencyAmt) + '' + 'Total Budget' + fmt(totalBudget) + '' + 'Financing' + finHtml + 'Benchmarks' + 'Annual 1% Maintenance Rule' + fmt(annualMaintBenchmark) + '/yr' + 'Est. Resale Value Added (~' + fmtPct(roiPct*100) + ' ROI)' + fmt(estimatedROI) + '' + ''; }
#### Formulas Used
Base Project Cost = Materials + Labor × (1 − DIY%) + Permits
Contingency Reserve = Base Project Cost × (Contingency% ÷ 100)
Total Budget = Base Project Cost + Contingency Reserve
Monthly Payment (amortized) = P × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1] where P = Total Budget, r = monthly rate (APR ÷ 12 ÷ 100), n = months
Total Interest = (Monthly Payment × n) − Total Budget
Estimated Resale Value Added = Total Budget × ROI% (type-specific average)
#### Assumptions & References
- Cost benchmarks are derived from the National Association of Home Builders (NAHB) and HomeAdvisor / Angi national cost guides (2023–2024).
- Minor repairs estimated at ~0.75% of home value; moderate ~2%; major ~5%; full renovation ~15%.
- A 10–20% contingency is recommended by the American Institute of Architects (AIA) for residential projects; default is 15%.
- The 1% annual maintenance rule (set aside 1% of home value per year) is a widely cited personal-finance guideline (Bankrate, NerdWallet).
- ROI estimates are based on Remodeling Magazine's Cost vs. Value Report averages; actual ROI varies by market and project quality.
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