How Our Estimate Calculator Works?

Our calculator pulls together real contractor pricing data to give you a starting range. It’s not a quote. It’s a planning tool to help you understand what to expect before talking to contractors.

ZIP Code Adjustment

Labor rates vary dramatically by location. A shower-to-tub conversion in Phoenix costs different than the same job in Boston. Your ZIP code adjusts the estimate to reflect local market rates.

Project Variables

Tub type, surround material, and drain relocation complexity all interact. A basic alcove tub with acrylic surround where the drain stays close to its original location costs far less than a freestanding tub with custom tile requiring major drain work. The calculator weighs these factors against each other.

Why Ranges, Not Exact Numbers

No calculator can account for your specific conditions. Hidden damage behind old shower walls, subfloor condition, and exact material selections all affect final pricing. A range gives you realistic expectations without false precision.

Cost Surprises to Watch For

These are the things that blow budgets. Know them going in.

Drain Relocation on Concrete Slabs

The #1 budget surprise. Shower drains sit centered; tub drains sit at one end. On wood subfloors, this is manageable ($300-$1,000). On concrete slabs, cutting and patching concrete runs $1,000-$3,000. Always ask about your floor type upfront.

Hidden Water Damage

Old showers often hide moisture problems behind walls. Rotted studs, moldy drywall, or damaged subfloor can add $500-$3,000 in unexpected repairs. A good contractor includes inspection as part of demo and will flag issues early.

Water Heater Capacity

Showers use 15-20 gallons. Standard tubs use 40-50 gallons. Deep soaking tubs use 60-80+ gallons. If your water heater can’t fill the tub you want with hot water, you’ll need an upgrade. Check capacity before choosing a tub.

Permit Requirements

Most shower-to-tub conversions need permits because plumbing is involved. Factor in $100-$500 for permit fees. Skipping permits can cause problems at resale and may void insurance coverage for water damage.