Does this include permits, design, or engineering?

No. Permit fees, designer or architect fees, and structural engineering are not explicitly included. Add them separately based on local requirements and your design team’s pricing.

What contingency percentage should I use?

Many remodelers suggest at least 10% for newer homes and 15–20% for older homes or known problem areas. If your bathroom has a history of leaks or you suspect subfloor damage, lean toward the higher end.

How should I budget for shower glass, niches, or custom features?

You can increase your tile/shower and fixtures allowances to cover custom glass, built‑in niches, benches, or specialty hardware. These items can add up quickly, especially in high‑end designs.

Where do lighting, paint, and fans fit?

Those items are typically folded into labor and allowances. If your electrical or lighting scope is significant, you may want to boost your labor per square foot or add a separate allowance for lighting and electrical.

How do I adjust for DIY work versus hiring pros?

You can reduce the labor per square foot to reflect tasks you plan to DIY (like painting or demolition). However, plumbing, waterproofing, and complex tile work are often best left to licensed professionals—keep realistic allowances for those trades.

construction calculator

Bathroom Remodel Cost Calculator

Estimate bathroom remodel cost by adding fixtures, tile, vanity, plumbing allowance, labor per sq ft, and contingency.

Results

Labor cost: $4,500
Contingency: $1,322
Estimated total cost: $14,542
Cost per sq ft: $0

Overview

Bathroom remodels can range from a simple cosmetic refresh to a full gut renovation with new plumbing, tile, and fixtures—and costs can swing wildly depending on scope. To avoid sticker shock, it helps to break the project into buckets: fixtures, tile and shower surfaces, vanity and counters, plumbing work, labor per square foot, and a contingency for surprises like water damage or code upgrades.

This bathroom remodel cost calculator turns those buckets into a structured estimate. You enter the bathroom size, allowances for key material categories, a labor-per‑square‑foot rate, a plumbing allowance, and a contingency percentage. The tool then estimates labor cost, aggregates your material and plumbing allowances into a base budget, adds contingency, and reports total cost and cost per square foot. You get a clearer picture of the budget range you’re working with before you start calling contractors.

How to use this calculator

Measure or approximate your bathroom’s floor area in square feet and enter it as bathroom size.
Enter a fixtures budget that covers toilet, tub/shower trim, valves, faucets, and accessories like towel bars or grab bars.
Enter a tile/shower budget covering floor tile, shower walls, shower pan or base, waterproofing materials, and related trim pieces.
Enter a vanity/counter budget that includes the vanity cabinet, countertop, sink(s), and associated faucet(s).
Enter a labor-per‑square‑foot rate that reflects demolition, framing, drywall, tile installation, painting, and finish carpentry. Rates vary by region and finish level.
Enter a plumbing allowance to cover rough‑in and finish plumbing, including new valves, potential fixture moves, and any necessary upgrades to supply or drain lines.
Set a contingency percentage (often 10–20%) based on the age of the home, known issues, and how much uncertainty you want to buffer.
Review the calculated labor cost, contingency amount, total project cost, and cost per square foot. Adjust allowances to model basic, mid‑range, and high‑end scenarios.

Inputs explained

Bathroom size (sq ft): The floor area of the bathroom, measured wall‑to‑wall, in square feet. Include any shower area that will be retiled; exclude adjacent closets or hallways unless they are part of the remodel.
Fixtures budget: An allowance for plumbing fixtures such as the toilet, tub or shower trim, showerhead, valves, and accessories. Increase this number for premium brands or multiple showerheads.
Tile/shower budget: The budget for tile, stone, or other shower‑surround materials, including shower floors, wall tile, mosaic accents, and waterproofing membranes. Larger showers and more intricate patterns require higher allowances.
Vanity/counter budget: The allowance for the vanity cabinet, countertop, sink(s), and faucet(s). This can range from a simple stock vanity to a custom double‑sink cabinet with a stone top.
Labor per sq ft: An estimated cost per square foot for demolition and installation work (tile, drywall, paint, fixtures, trim). Higher‑end finishes, complex tile layouts, or tight spaces may justify a higher rate.
Plumbing allowance: An allowance for rough and finish plumbing work, including moving drains or supplies, replacing shutoff valves, and tying in new fixtures. Increase this if you plan to move major fixtures or suspect aging pipes.
Contingency (%): A percentage of the base cost reserved for unexpected issues: hidden water damage, subfloor repairs, code upgrades, or last‑minute material upgrades. Many contractors and cost guides recommend 10–20% for bathroom projects.

How it works

Labor is modeled as a simple per‑square‑foot rate: Labor_cost = Bathroom_size × Labor_per_sqft. This roughly captures demolition, installation, and finishing work for the entire footprint.

We treat your line‑item allowances for fixtures, tile/shower, vanity/counter, and plumbing as lump‑sum budget categories. Base_cost = Fixtures_budget + Tile_budget + Vanity_budget + Plumbing_allowance + Labor_cost.

Contingency is calculated as a percentage of that base cost to cover unknowns: Contingency_amount = Base_cost × (Contingency_% ÷ 100). For bathroom projects, 10–20% is common, with the higher end reserved for older homes or known issues.

Total_estimated_cost = Base_cost + Contingency_amount. This is the number you can compare against contractor bids or use as a planning anchor.

Cost_per_sqft = Total_estimated_cost ÷ Bathroom_size. This normalizes the budget so you can compare across projects and track whether you’re in a typical per‑square‑foot range for your market and finish level.

The calculator doesn’t enforce specific unit prices; instead, it turns your allowances and rates into a coherent subtotal, contingency, and total, which you can refine as quotes come in.

Formula

Labor_cost = Size_sqft × Labor_per_sqft
Base_cost = Fixtures_budget + Tile_budget + Vanity_budget + Plumbing_allowance + Labor_cost
Contingency_amount = Base_cost × (Contingency_percent ÷ 100)
Total_cost = Base_cost + Contingency_amount
Cost_per_sqft = Total_cost ÷ Size_sqft

When to use it

Creating a first‑pass budget for a bathroom remodel before requesting quotes, so you have a realistic range in mind.
Comparing a simple cosmetic refresh (lower allowances, lower labor rate) versus a full gut renovation with high‑end finishes by adjusting each input.
Evaluating bathroom remodel ROI for a flip or rental property by looking at cost per square foot across units or properties.
Using the calculator as a communication tool with contractors to align on budget buckets and where you are willing to spend or save.
Testing how scope changes—like adding a curbless shower or upgrading to stone surfaces—impact the total project budget.

Tips & cautions

Increase the plumbing allowance if you plan to move the toilet, shift the shower location, or convert a tub‑shower combo into a large walk‑in shower—those changes can add significant labor and material cost.
Use a higher contingency percentage for older homes, bathrooms with known leaks or mold issues, or any project where tile and waterproofing will be opened up for the first time in many years.
Adjust labor per square foot based on finish complexity: large‑format tile, intricate mosaics, niches, benches, and glass installations often require more time and skill.
Group lighting, ventilation, and minor electrical upgrades into either the fixtures or labor allowance if your remodel includes new recessed lights, a fan, or outlet moves.
Get at least two or three contractor bids and compare their category breakdowns to your calculator outputs; large gaps can highlight where your assumptions differ from local market pricing.
Does not explicitly include permitting, design fees, architectural work, or structural changes such as moving walls—those should be added as separate line items.
Assumes a single‑phase remodel with one mobilization; phased projects or complex sequencing (for example, in multi‑unit buildings) can increase labor costs.
Does not itemize electrical or HVAC adjustments; those are assumed to be covered in the labor or allowances and may need separate budgeting for major upgrades.
Uses broad allowance buckets rather than detailed materials lists, so actual costs can vary depending on your specific selections and local labor rates.
Intended as a planning tool, not a formal estimate. Contractors will include overhead, profit, material price fluctuations, and unique job‑site constraints.

Worked examples

60 sq ft main bath, midrange finishes

Inputs: size = 60 sq ft; fixtures = $3,000; tile = $2,000; vanity = $1,200; labor_per_sqft = $45; plumbing = $1,000; contingency = 12%.
Labor_cost = 60 × $45 = $2,700.
Base_cost = 3,000 + 2,000 + 1,200 + 1,000 + 2,700 = $9,900.
Contingency_amount = 9,900 × 0.12 ≈ $1,188.
Total_cost ≈ 9,900 + 1,188 ≈ $11,088; Cost_per_sqft ≈ 11,088 ÷ 60 ≈ $184.80.

45 sq ft hall bath refresh

Inputs: size = 45 sq ft; fixtures = $1,500; tile = $1,200; vanity = $800; labor_per_sqft = $35; plumbing = $600; contingency = 10%.
Labor_cost = 45 × $35 = $1,575.
Base_cost = 1,500 + 1,200 + 800 + 600 + 1,575 = $5,675.
Contingency_amount = 5,675 × 0.10 ≈ $568.
Total_cost ≈ 5,675 + 568 ≈ $6,243; Cost_per_sqft ≈ 6,243 ÷ 45 ≈ $138.73.

80 sq ft upscale primary bath

Inputs: size = 80 sq ft; fixtures = $4,500; tile = $4,000; vanity = $3,000; labor_per_sqft = $60; plumbing = $2,000; contingency = 15%.
Labor_cost = 80 × $60 = $4,800.
Base_cost = 4,500 + 4,000 + 3,000 + 2,000 + 4,800 = $18,300.
Contingency_amount = 18,300 × 0.15 ≈ $2,745.
Total_cost ≈ 18,300 + 2,745 ≈ $21,045; Cost_per_sqft ≈ 21,045 ÷ 80 ≈ $263.06.

Deep dive

This bathroom remodel cost calculator helps you turn a rough scope—fixtures, tile, vanity, plumbing, labor, and contingency—into an estimated total project cost and cost per square foot.

Enter bathroom size, allowances for the major material categories, a labor‑per‑square‑foot rate, a plumbing allowance, and a contingency percentage to see a budget that reflects both planned spending and a realistic buffer for surprises.

Use the tool to sanity‑check contractor bids, compare light refresh versus full gut remodel scenarios, and communicate budget expectations early in the planning process.

FAQs

Does this include permits, design, or engineering?: No. Permit fees, designer or architect fees, and structural engineering are not explicitly included. Add them separately based on local requirements and your design team’s pricing.
What contingency percentage should I use?: Many remodelers suggest at least 10% for newer homes and 15–20% for older homes or known problem areas. If your bathroom has a history of leaks or you suspect subfloor damage, lean toward the higher end.
How should I budget for shower glass, niches, or custom features?: You can increase your tile/shower and fixtures allowances to cover custom glass, built‑in niches, benches, or specialty hardware. These items can add up quickly, especially in high‑end designs.
Where do lighting, paint, and fans fit?: Those items are typically folded into labor and allowances. If your electrical or lighting scope is significant, you may want to boost your labor per square foot or add a separate allowance for lighting and electrical.
How do I adjust for DIY work versus hiring pros?: You can reduce the labor per square foot to reflect tasks you plan to DIY (like painting or demolition). However, plumbing, waterproofing, and complex tile work are often best left to licensed professionals—keep realistic allowances for those trades.

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This bathroom remodel cost calculator is a planning aid only. Actual project costs vary widely by region, contractor, material selections, site conditions, and scope changes. Use it to frame conversations and budgets, but confirm pricing with qualified contractors and suppliers before committing to a project or signing contracts.