Converting your bathtub to a walk-in shower is one of the most impactful bathroom modifications for staying safe and comfortable at home. No high step to navigate, no awkward maneuvering over a tub wall, and easier access whether you're standing or using a shower chair.
A walk-in shower conversion removes your existing bathtub and replaces it with a shower that has either no threshold or a very low threshold (typically 2 inches or less). The shower floor is level or nearly level with your bathroom floor, eliminating the need to step over a high tub wall.
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Types of Walk-In Shower Conversions
Curbless shower (zero threshold)
The shower floor is completely level with the bathroom floor. Water containment relies on proper floor slope and a linear drain. This is the most accessible option but requires specific drainage and waterproofing considerations.
Low-threshold shower
A small curb (1 to 2 inches high) contains water while keeping the step minimal. Easier to install than a curbless shower and works in more bathroom layouts.
Prefabricated walk-in shower insert
A complete shower unit designed to fit in your existing tub space. These come with built-in grab bars, seats, and storage. Installation is typically faster than custom tile work.
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Cost Breakdown
Basic prefabricated conversion
Includes removal of existing tub, installation of prefabricated shower unit with built-in seat and grab bars, basic plumbing modifications, and standard fixtures.
Mid-range custom tile conversion
Includes demolition, custom tile work, linear drain, built-in or fold-down seat, grab bars, glass door or curtain, and upgraded fixtures.
High-end curbless conversion
Includes structural modifications for zero threshold, premium tile or stone, multiple grab bars, built-in storage niches, rainfall showerhead, and high-end fixtures.
Additional costs to consider
Permits ($100 to 300), temporary bathroom setup ($200 to 500), flooring repairs outside shower area ($300 to 800), electrical work for additional lighting ($200 to 600).
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Finding the Right Contractor
Look for these qualifications
Licensed general contractor or bathroom remodeling specialist, CAPS (Certified Aging-in-Place Specialist) certification preferred, experience with accessible bathroom modifications, proper insurance and bonding.
Questions to ask potential contractors
How many walk-in shower conversions have you completed in the past year? Do you handle permits, or do I need to obtain them separately? What warranty do you provide on labor and materials?
Get multiple quotes for comparison
Get at least three detailed estimates that include materials, labor, timeline, and warranty information. The lowest bid isn't always the best value. Compare what's included in each quote.
Check references from recent projects
Ask for references from jobs completed in the past year, specifically walk-in shower conversions. Contact these references to ask about quality, timeliness, and how well the contractor handled any issues.
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The Conversion Process
Assessment and planning
A contractor will evaluate your current bathroom layout, plumbing, and structural requirements. They'll measure the space, check floor joists, and determine what modifications are needed for proper drainage.
Permits and approvals
Most conversions require a building permit. Your contractor should handle this, but expect 1 to 2 weeks for permit approval in most areas. Don't start work without proper permits.
Demolition
The existing tub, surrounding tile, and sometimes flooring are removed. This typically takes 1 to 2 days and creates significant dust and debris. Plan for temporary bathroom arrangements.
Installation and finishing
Critical waterproofing is applied, followed by the shower base, walls, and fixtures. Tile work, if included, happens during this phase. Grab bars, shower doors, and finishing touches complete the project.
Planning Your Conversion
Consider your long-term needs when choosing between curbless and low-threshold options. A curbless shower provides maximum accessibility but requires more complex installation and may not work in all bathrooms.
Plan for being without your main bathroom for 1 to 2 weeks. Set up a temporary washing station or arrange to use another bathroom during the conversion process.
Think about storage and seating needs. Built-in niches for toiletries and a fold-down or built-in seat make the shower more functional for daily use.
Don't rush the contractor selection process. A walk-in shower conversion is a significant investment, and proper installation is critical for both safety and preventing water damage.
Free Resources
- CAPS Directory (find contractors experienced in accessible bathroom modifications)
- AARP HomeFit Guide (bathroom modification planning and cost information)
- ADA Guidelines (technical specifications for accessible bathroom design)
- Area Agency on Aging (local resources and funding assistance for home modifications)