Commercial Lease Cost Per Square Foot Calculator
ANA›Life Services Authority›National Calculator Authority›Commercial Lease Cost Per Square Foot 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; } }
Commercial Lease Cost Per Square Foot Calculator
Calculate the effective cost per square foot for a commercial lease, factoring in base rent, operating expenses (NNN), and total lease value over the lease term.
Total Rentable Square Footage (sq ft)
Annual Base Rent ($)
Annual Operating Expenses / NNN Charges ($ per year, 0 if gross lease)
Lease Term (months)
Annual Rent Escalation Rate (%, 0 if fixed)
Free Rent / Rent Abatement Period (months, 0 if none)
Calculate
function comCalc() { var resultDiv = document.getElementById('com-result'); resultDiv.style.display = 'none'; resultDiv.innerHTML = '';
var sqft = parseFloat(document.getElementById('com-total-sqft').value); var annualBase = parseFloat(document.getElementById('com-annual-base-rent').value); var annualOpex = parseFloat(document.getElementById('com-annual-opex').value) || 0; var termMonths = parseInt(document.getElementById('com-lease-term').value); var escalation = parseFloat(document.getElementById('com-annual-escalation').value) || 0; var freeRent = parseInt(document.getElementById('com-free-rent').value) || 0;
// --- Validation --- var errors = []; if (isNaN(sqft) || sqft 100) errors.push("Annual escalation rate must be between 0 and 100."); if (isNaN(freeRent) || freeRent = termMonths) errors.push("Free rent period must be less than the total lease term.");
if (errors.length > 0) { resultDiv.style.display = 'block'; resultDiv.innerHTML = ''; return; }
// --- Core Calculations --- // Monthly base rent for year 1 var monthlyBaseY1 = annualBase / 12; // Monthly opex var monthlyOpex = annualOpex / 12;
// Total lease cost with escalation, applied annually, with free-rent abatement // We iterate month by month for accuracy var totalLeaseCost = 0; var totalBaseOnly = 0; var paidMonths = 0;
for (var m = 1; m 0 ? totalLeaseCost / paidMonths : 0;
// --- Format helpers --- function fmt(n, dec) { dec = dec === undefined ? 2 : dec; return n.toLocaleString('en-US', {minimumFractionDigits: dec, maximumFractionDigits: dec}); } function fmtD(n) { return '$' + fmt(n); }
// --- Output --- var html = '### Results '; html += ''; html += 'MetricValue'; html += 'Year 1 Base Rent / sq ft / year' + fmtD(annualBase / sqft) + ''; html += 'Year 1 Total Cost / sq ft / year (incl. NNN)' + fmtD(simpleAnnualCostPerSqft) + ''; html += 'Year 1 Total Cost / sq ft / month' + fmtD(simpleMonthlyPerSqft) + ''; html += 'Effective Annual Cost / sq ft (over full term)' + fmtD(annualCostPerSqft) + ''; html += 'Effective Monthly Cost / sq ft (over full term)' + fmtD(monthlyCostPerSqft) + ''; html += 'Total Cost / sq ft (entire lease term)' + fmtD(totalCostPerSqft) + ''; html += 'Total Lease Cost (entire term)' + fmtD(totalLeaseCost) + ''; html += 'Average Monthly Rent (paid months)' + fmtD(avgMonthlyRent) + ''; html += 'Lease Term' + termMonths + ' months (' + fmt(leaseYears, 2) + ' years)'; html += 'Free Rent / Abatement Period' + freeRent + ' month(s)'; html += '';
// Year-by-year breakdown if escalation > 0 or term > 12 if (termMonths > 12 || escalation > 0) { html += '#### Year-by-Year Breakdown '; html += ''; html += 'YearAnnual Base RentAnnual NNNAnnual Total$/sq ft/yr'; var fullYears = Math.ceil(termMonths / 12); for (var y = 0; y freeRent) abatedMonths = 0; var abateFrac = abatedMonths / monthsInYear; var yTotalNet = yTotal * (1 - abateFrac); var yPerSqft = yTotalNet / sqft / (monthsInYear / 12); html += ''; html += 'Year ' + (y + 1) + (monthsInYear '; html += '' + fmtD(yBase * (1 - abateFrac)) + ''; html += '' + fmtD(yOpex * (1 - abateFrac)) + ''; html += '' + fmtD(yTotalNet) + ''; html += '' + fmtD(yPerSqft) + ''; html += ''; } html += ''; }
resultDiv.style.display = 'block'; resultDiv.innerHTML = html; }
#### Formulas Used
Year 1 Cost per Sq Ft (Annual): = (Annual Base Rent + Annual Operating Expenses) ÷ Total Square Footage
Monthly Cost per Sq Ft: = Annual Cost per Sq Ft ÷ 12
Escalated Monthly Base Rent (month m): = (Annual Base Rent ÷ 12) × (1 + Escalation Rate)^(floor((m−1) ÷ 12))
Total Lease Cost (with escalation & free rent): = Σ [Monthly Base Rent(m) + Monthly NNN] for each paid month m (free-rent months = $0)
Effective Annual Cost per Sq Ft: = (Total Lease Cost ÷ Lease Years) ÷ Square Footage
Total Cost per Sq Ft (full term): = Total Lease Cost ÷ Square Footage
#### Assumptions & References
- Rentable square footage includes the tenant's usable area plus a proportionate share of common areas (load factor), per BOMA standards (BOMA International, Standard Methods of Measurement).
- Reference: CCIM Institute — Commercial Real Estate Lease Analysis; CoStar Group — Commercial Lease Benchmarks.
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