Start With Real Scope
List the work you actually plan to complete instead of applying a single whole-home price per square foot.
Interior Renovation Budget Calculator
Build a detailed interior renovation budget from your own material prices, labor rates, project quantities, professional quotes, soft costs, tax, contingency, and available budget.
Quick answer: this is a project-detail planning model, not an area-times-market-price estimator. It uses only the costs and quotes you enter and produces Low, Expected, and High scenarios in USD or CAD.
🌎 Region
Choose the project currency and area unit. Switching regions clears the current project; no currency conversion is performed.
📐 Project Basics
Enter the floor area being renovated once. Wall areas and individual item quantities are not added to this floor-area figure.
🧱 Renovation Items
Add the actual work included in your project. Expected cost is the default; Low and High can be added when you have a price range.
Add your first renovation item
Add flooring, painting, drywall, cabinetry, countertops, demolition, doors, trim, another interior item, or a professional quote.
👷 Quick Professional Quotes
Electrical, plumbing, and HVAC use your existing fixed professional quote. FigureNorth does not generate contractor pricing for these trades.
Estimate disclaimer: This estimate is for planning purposes only. Actual costs may vary based on location, material prices, labor rates, taxes, fees, exchange rates, and project conditions.
📘 How It Works
🧱 Item Direct Cost = Materials + Labor + Equipment + Subcontractor Cost + Fixed Additional Cost.
🏢 Contractor Overhead = Direct Cost × Overhead Rate.
📈 Contractor Profit = Direct Cost × Profit Rate. Profit is not compounded on top of overhead.
🏗️ Construction Subtotal = Direct Cost + Contractor Overhead + Contractor Profit.
🏷️ Additional Tax = Taxable Subtotal × Tax Rate when entered prices do not already include tax.
🛡️ Contingency = (Construction Subtotal + Soft Costs) × Contingency Rate.
💰 Total = Construction Subtotal + Soft Costs + Additional Tax + Contingency.
🎯 When to Use
- 🏠 Whole-home interior renovation planning
- 🍳 Kitchen renovation budgets
- 🛁 Bathroom renovation budgets
- 🎨 Painting and finish projects
- 🪵 Flooring, cabinetry, and trim planning
- 👷 Comparing known contractor quotes
- 💵 Checking a project against an available budget
🧮 Worked Example Using the Production Formula
A 1,000 sq ft US interior renovation includes flooring, painting, cabinetry, an electrical contractor quote, disposal, and a permit. The example uses 10% contractor overhead, 10% contractor profit, 8% tax on marked taxable components, a 10% contingency, and a $50,000 available budget.
Low Scenario
$30,360.00
Expected Scenario
$39,205.00
High Scenario
$49,450.00
📐 Expected cost per square foot: $39.21. 💵 Expected budget balance: $10,795.00.
📋 Assumptions and Cost Scope
- 💵 All material prices, labor rates, equipment amounts, subcontractor quotes, and fixed costs are supplied by the user.
- 👷 Electrical, plumbing, and HVAC work use fixed user-supplied professional quotes; the calculator does not generate local trade pricing.
- 📦 Waste is applied at the individual item level. Labor follows the base quantity unless Labor Includes Waste is selected.
- 🏢 Contractor overhead and contractor profit are each calculated independently from direct cost.
- 🏷️ Tax applies only to components you mark taxable and to taxable disposal.
- 🛡️ Contingency applies to construction subtotal plus soft costs; additional tax is not part of the contingency base.
- 📊 Category breakdown contains renovation-item direct costs only. Disposal and later project additions are displayed separately.
- 📐 Cost per square foot or square metre uses renovated floor area as its denominator.
- 🚫 Structural work, exterior work, roofing, foundations, additions, and yard projects are excluded.
💡 Renovation Budget Guide
Use Your Own Prices
Enter supplier prices, installer rates, or known project amounts that match the products and scope you are considering.
Use Ranges When Useful
Expected can stand alone. Add Low and High values when quotes, products, or scope still have meaningful uncertainty.
Keep Professional Quotes Intact
Enter electrical, plumbing, and HVAC work as complete fixed subcontractor quotes rather than rebuilding the quote from estimated components.
Plan a Contingency
A contingency is a planning reserve, not an automatic prediction of cost overruns. Choose a rate that reflects the uncertainty in your scope.
Confirm Before Committing
Verify measurements, contracts, taxable treatment, permits, product quantities, labor scope, and final quotes before purchasing or signing agreements.
❓ Interior Renovation Budget Calculator FAQ
What does the Interior Renovation Budget Calculator include?
It combines user-entered renovation items, demolition and disposal, rates, equipment, fixed costs, professional quotes, soft costs, overhead and profit, tax, contingency, and an optional available budget.
Does this calculator use local renovation prices?
No. It uses the material rates, labor rates, equipment amounts, subcontractor quotes, fixed costs, and project amounts you enter.
How should I enter electrical, plumbing, or HVAC work?
Enter the complete user-supplied professional quote as a subcontractor amount. The calculator does not estimate local contractor pricing.
What are the Low, Expected, and High scenarios?
Expected is the main planning scenario. Optional Low and High values carry a range of quotes or prices through the same production formula.
How is contingency calculated?
Contingency is calculated from the construction subtotal plus soft costs. Additional calculated tax is not included in its base.
Are contractor overhead and profit included?
Yes, when you enter those percentages. Each is calculated independently from direct cost; profit is not compounded on overhead.
How does the calculator handle tax?
Additional tax applies only to components marked taxable, plus taxable disposal. If entered prices include tax, no additional tax is added.
What does cost per square foot or square metre mean?
The complete scenario total is divided by the renovated floor area. Wall areas and item quantities are not added to that denominator.
What work is excluded?
Structural work, exterior work, roofing, foundations, additions, and yard projects are outside this calculator's scope.
Is this a contractor quote?
No. It is a planning calculation based on your quantities, prices, assumptions, and professional quotes. Confirm final scope and pricing with qualified professionals.
✅ Calculation Scope and Review
The production formula was reviewed on August 23, 2026. Validation covers Low/Expected/High ordering, pricing bases, waste, professional quotes, taxable components, overhead and profit, soft costs, contingency, budget comparison, area conversion, numeric limits, derived overflow, and category conservation.
This calculator is a detailed planning tool, not a construction contract, professional estimate, code review, or local market-price database. Confirm project scope and final amounts with qualified contractors, suppliers, and other professionals before committing funds.