About this tool
Siding is the most ROI-positive home improvement (~75-80 percent return). Vinyl is cheapest, requires least maintenance, lasts 30+ years. Fiber cement (Hardie) is durable, fire-resistant, but heavier. Brick is most expensive but lasts 100+ years.
Material price benchmarks for 2026 (installed, US national average): vinyl $4-7/sqft, engineered wood (LP SmartSide) $5-9/sqft, fiber cement (James Hardie HardiePlank) $9-14/sqft, cedar shake $11-18/sqft, brick veneer $15-25/sqft, natural stone veneer $20-40/sqft. Regional multipliers run from 0.85 in the Southeast US to 1.35 in Northeast metro markets. Always add 8-10% waste factor on top of measured wall area to cover cuts, overlaps, and damaged panels during install.
How it works
Enter total wall area to be sided, pick material, choose whether to remove old siding, and pick region. The calculator returns total cost with line items.
Worked example: a 2,200 sqft wall area in Atlanta (regional multiplier 0.95) getting HardiePlank at $11/sqft installed with old vinyl removal at $1.50/sqft: (2,200 x 11 x 0.95) + (2,200 x 1.50) = $22,990 + $3,300 = $26,290. Add 9% waste = $28,656. Cosmetics like new soffit, trim wrap, and fresh paint typically add another $4-7,000.
How to use the Siding Cost Calculator
The Siding Cost Calculator is a browser-based tool that runs entirely on your device. Inputs you enter never reach a server - all calculations happen client-side in JavaScript. This means:
- Privacy: nothing is logged, sent, or stored by 3Tej. Inputs disappear when you close the tab.
- Speed: results update as you type. No network round trip.
- Offline use: once the page is cached, it works without internet.
- No signup: no account, no email, no rate limits.
Step by step
- Enter your inputs in the form above. Each field is labeled with its unit (currency, percent, kg, etc.) and the expected range.
- Read the result as it updates. The number reflects the formula commonly accepted in Siding Cost-related calculations.
- Adjust to see sensitivity: change one input at a time and watch how the output moves. This is the fastest way to understand which variable matters most.
- Copy or screenshot the result for later reference. The page state persists for the session if your browser allows it.
When you would use this
- Quick estimates: when you need a number now and don't want to open a spreadsheet.
- Sensitivity analysis: testing how a result changes as inputs vary, before committing to a real-world decision.
- Comparison: running the same calculation with different inputs to compare options side by side.
- Learning: building intuition for how the underlying math behaves.
- Documentation: capturing a snapshot of inputs and outputs at a point in time.
The formula explained
This calculator uses the following formula:
total = area × material_rate × region_multiplier + removal_cost
The reason this formula works is rooted in the underlying physics, finance, or biology of the problem. Behind every calculator is a published, peer-reviewed equation or a widely accepted convention. We do not invent formulas; we apply standard ones from textbooks, government tables, professional bodies, and academic literature.
If you are curious about the math, the simplest way to verify is to plug in two known numbers and compare against a known result. The calculator should match published examples to within rounding precision.
Frequently asked questions
Vinyl vs Hardie?
Vinyl: $5/ft², 30-year life, cheap. Hardie: $10/ft², 50-year life, fire-resistant, paint every 15 years.
DIY savings?
30-50% on labor. Vinyl is the most DIY-friendly. Brick requires masonry skills.
Removal vs over-side?
Code in most areas allows over-siding once. After that, must remove. Removal adds $1-2/ft².
Best ROI material?
Fiber cement returns 70-80% on resale. Vinyl 65-75%. Stone veneer accents return 100%+ in spots.
How long does siding installation take?
A typical 2,000 sqft single-story home takes 5 to 10 working days for a 3-person crew installing vinyl, 10 to 14 days for fiber cement (heavier panels, more cuts), and up to 4 weeks for full masonry or brick veneer. Add 2 to 4 days for old siding removal and any sheathing or wrap repair.
Do I need to permit a siding job?
Most US municipalities require a building permit for any siding replacement that involves sheathing, structural work, or hurricane straps; permits run $150 to $600. Pure overlay of vinyl on existing siding often qualifies as a repair and may be permit-exempt, but always check the local code and HOA covenants first.
Is the Siding Cost Calculator accurate?
The Siding Cost Calculator applies the standard formula for siding cost. Accuracy is limited only by your input precision. For decisions with material consequences, use the result as a starting point and verify with a qualified professional or the relevant official source.
Is the Siding Cost Calculator free?
Yes. 100% free, no signup, no payment, no API key. The site is funded by display ads that appear around the tool but not inside the calculation flow.
Are my inputs saved?
No. Inputs stay in your browser tab. Closing the tab discards them. The site uses Google Analytics for traffic measurement (anonymized) but does not see what you type into the form.
Can I use the Siding Cost Calculator on my phone?
Yes. The tool is responsive and tested on iOS Safari, Android Chrome, and major desktop browsers. Touch targets meet Apple's 44pt and Google's 48dp minimum guidance.
How do I report a bug or suggest improvement to the Siding Cost Calculator?
Email hi@3tej.com with the URL of this page and a description of what you saw vs expected. We typically respond within 72 hours and update calculators when rules or formulas change.
How accurate is the Siding Cost Calculator?
It applies the standard formula. Accuracy is limited only by your input precision. For decisions with material consequences (taxes, medical, legal, structural), use the result as a starting point and verify with a qualified professional in the relevant field.
Is the Siding Cost Calculator free to use?
Yes. 100% free, no signup, no payment, no API key. The site is funded by display ads around the tool but not inside the calculation flow.
Are my inputs saved anywhere?
No. All inputs stay in your browser tab. Closing the tab discards them. The site uses Google Analytics for traffic measurement (anonymized) but the analytics never see what you type into the form.
Does the Siding Cost Calculator work offline?
Yes. Once the page has loaded, it works without internet. The calculation runs in JavaScript on your device.
Can I share results from the Siding Cost Calculator?
Take a screenshot or copy the output. The page doesn't generate shareable URLs for specific calculations - inputs stay in your browser only.
Why are the results different from another siding cost tool?
Most likely: different formula assumptions, different default values, different rounding rules, or different applicable rates. Check the methodology if both tools document it. Both can be valid for different scenarios.