Building Permit Cost Estimator

ANA›Life Services Authority›National Calculator Authority›Building Permit Cost Estimator

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Building Permit Cost Estimator

Estimate your building permit fees based on project type, total construction value, and regional cost factors. Results are approximations; always verify with your local building department.

Project Type

Residential – New Construction Residential – Addition / Remodel Commercial – New Construction Commercial – Tenant Improvement Accessory Structure (garage, shed, ADU) Demolition Mechanical / Electrical / Plumbing (MEP)

Total Construction Value ($)

Project Square Footage (sq ft)

Regional Cost Index

Low-Cost Region (rural / Midwest) Average Region (national baseline) High-Cost Region (Southeast / Mountain West) Very High-Cost Region (CA, NY, MA, WA)

Number of Stories

Include Plan Review Fee?

Yes No

Calculate

Fill in the fields above and click Calculate.

function buiCalc() { // ── Collect inputs ────────────────────────────────────────────────────────── const projectType = document.getElementById("bui-project-type").value; const constrValue = parseFloat(document.getElementById("bui-construction-value").value); const sqft = parseFloat(document.getElementById("bui-sqft").value); const regionIndex = parseFloat(document.getElementById("bui-region").value); const stories = parseInt(document.getElementById("bui-stories").value, 10); const includePlan = parseInt(document.getElementById("bui-plan-review").value, 10); const resultDiv = document.getElementById("bui-result");

// ── Validation ────────────────────────────────────────────────────────────── const errors = []; if (isNaN(constrValue) || constrValue 0) { resultDiv.innerHTML = "Please fix the following:" + errors.map(e => "").join("") + ""; return; }

// ── Base permit fee schedule (ICC / IBC sliding-scale model) ──────────────── // Fee tiers based on construction value (national average baseline): // $0 – $2,000 : flat $50 // $2,001 – $25,000 : $50 + $15 per $1,000 over $2,000 // $25,001 – $50,000 : $395 + $10 per $1,000 over $25,000 // $50,001 – $100,000 : $645 + $7 per $1,000 over $50,000 // $100,001 – $500,000 : $995 + $5 per $1,000 over $100,000 // $500,001+ : $2,995 + $3 per $1,000 over $500,000

let baseFee = 0; if (constrValue 2 stories adds 5% per additional story) ───────────── const storiesSurcharge = stories > 2 ? 1 + (stories - 2) * 0.05 : 1.0;

// ── Compute permit fee ────────────────────────────────────────────────────── const permitFee = baseFee * typeMult * regionIndex * storiesSurcharge;

// ── Plan review fee (typically 65% of permit fee for most jurisdictions) ──── const PLAN_REVIEW_RATE = 0.65; const planReviewFee = includePlan ? permitFee * PLAN_REVIEW_RATE : 0;

// ── State surcharge (approx. 10% of permit fee for state-level programs) ──── const STATE_SURCHARGE_RATE = 0.10; const stateSurcharge = permitFee * STATE_SURCHARGE_RATE;

// ── Per-square-foot inspection fee ($0.10/sq ft baseline, region-adjusted) ── const INSPECTION_RATE_PER_SQFT = 0.10; const inspectionFee = sqft > 0 ? sqft * INSPECTION_RATE_PER_SQFT * regionIndex : 0;

// ── Total ─────────────────────────────────────────────────────────────────── const totalFee = permitFee + planReviewFee + stateSurcharge + inspectionFee;

// ── Effective rate (% of construction value) ──────────────────────────────── const effectiveRate = constrValue > 0 ? (totalFee / constrValue) * 100 : 0;

// ── Format helpers ────────────────────────────────────────────────────────── const fmt = v => v.toLocaleString("en-US", { style: "currency", currency: "USD", maximumFractionDigits: 0 }); const fmtPct = v => v.toFixed(3) + "%";

const typeLabels = { residential_new: "Residential – New Construction", residential_addition: "Residential – Addition / Remodel", commercial_new: "Commercial – New Construction", commercial_tenant: "Commercial – Tenant Improvement", accessory: "Accessory Structure", demolition: "Demolition", mechanical: "Mechanical / Electrical / Plumbing" };

// ── Output ────────────────────────────────────────────────────────────────── resultDiv.innerHTML = ` ### Estimated Permit Cost Breakdown

Project Type ${typeLabels[projectType]}

Construction Value ${fmt(constrValue)}

Base Permit Fee ${fmt(permitFee)}

${includePlan ? Plan Review Fee (65% of permit fee) ${fmt(planReviewFee)} : ""}

State Surcharge (10% of permit fee) ${fmt(stateSurcharge)}

${sqft > 0 ? Inspection Fee ($0.10/sq ft × region index) ${fmt(inspectionFee)} : ""}

Estimated Total Permit Cost ${fmt(totalFee)}

Effective Rate (% of construction value) ${fmtPct(effectiveRate)}

⚠️ This is an estimate only. Actual fees vary by jurisdiction. Contact your local building department for official fee schedules.

`; }

#### Formula

Base Permit Fee — ICC/IBC sliding-scale tiered schedule:

Construction value ≤ $2,000 → flat $50
$2,001 – $25,000 → $50 + $15 per $1,000 over $2,000
$25,001 – $50,000 → $395 + $10 per $1,000 over $25,000
$50,001 – $100,000 → $645 + $7 per $1,000 over $50,000
$100,001 – $500,000 → $995 + $5 per $1,000 over $100,000
$500,000 → $2,995 + $3 per $1,000 over $500,000

Adjusted Permit Fee = Base Fee × Type Multiplier × Regional Cost Index × Stories Surcharge

Plan Review Fee = Adjusted Permit Fee × 0.65 (if selected)

State Surcharge = Adjusted Permit Fee × 0.10

Inspection Fee = Square Footage × $0.10 × Regional Cost Index

Total = Adjusted Permit Fee + Plan Review Fee + State Surcharge + Inspection Fee

Type Multipliers: Residential New 1.00 · Addition 0.85 · Commercial New 1.35 · Tenant Improvement 0.90 · Accessory 0.70 · Demolition 0.40 · MEP 0.60

Stories Surcharge: 1 + (stories − 2) × 0.05 for buildings over 2 stories

#### Assumptions & References

Base fee schedule follows the International Building Code (IBC) / ICC model fee ordinance, widely adopted across U.S. jurisdictions.
Plan review fee of 65% of the permit fee is the ICC-recommended standard (ICC Building Valuation Data).
State surcharge of 10% reflects common state-level building standards program fees (e.g., California BSAS, Washington State surcharge).
Inspection fee of $0.10/sq ft is a national average baseline; actual rates range from $0.05 to $0.25/sq ft.
Regional cost indices are derived from RSMeans Construction Cost Data city cost indexes.
Stories surcharge of 5% per story above 2 reflects increased inspection complexity per ASCE 7 and local amendments.
Demolition permits are typically assessed at 40% of equivalent new-construction permit value (ICC model ordinance).
MEP (mechanical/electrical/plumbing) permits are typically separate from the building permit and assessed at ~60% of the base rate.
Always verify fees with your local Authority Having Jurisdiction (AHJ) before budgeting.

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