If you're planning to replace your old bathtub with a Home Depot fiberglass 3-wall shower tub combo, here's a breakdown of the costs you can expect, including both materials and labor:
Material Costs (Home Depot)
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Fiberglass tub & shower combo units from Home Depot typically range from $700 to over $3,400, depending on size, design, and configuration (The Home Depot).
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A more budget-friendly option like the Delta Classic 500 Alcove Bath/Shower Combo can be found for around $678–$868 (The Home Depot).
Labor + Overall Installation Costs
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Standard bathtub replacement (materials + labor, including removal of the old tub) averages around $2,100 (This Old House).
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Bathtub-to-shower conversions—depending on complexity and finishes—average about $3,000, but can span a wide range from $1,200 to $15,000 (This Old House).
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A detailed cost calculator (Homewyse, July 2025) puts the typical installation cost between $1,380 and $2,438, though this number can vary with site-specific factors (Homewyse).
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The Spruce reports that complete bathtub replacements average $5,990, with a range from $1,565 to $10,420, depending largely on materials and labor complexity (The Spruce).
User Insights from Professionals
From a contractor sharing on Reddit about installing a fiberglass shower (floor and tile walls):
“A legitimate contractor will be more than $4,000 for a basic proper install with a fiberglass floor and tile wall — this is without any major plumbing or glass door.” (Reddit)
While this covers a slightly different scenario (more focused on showers than combos), it suggests a realistic baseline cost for a properly executed, durable installation.
Estimated Total Cost Summary
| Component | Estimated Cost (USD) |
|---|---|
| Fiberglass tub & shower combo | $700 – $1,000 (mid-range) |
| Removal of old tub | Included in many packages |
| Professional labor | $1,380 – $3,000+ |
| Estimated total cost (typical) | $2,000 – $4,000 |
| High-end / complex installs | $4,000 – $6,000+ |
Example Scenarios:
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Basic replacement with mid-range combo and smooth install: ~$2,500–$3,000
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More customized or premium install (e.g., tile accents, high-end finishes): $4,000–$6,000+
Recommendations
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Choose Your Combo Wisely
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If you're budget-conscious, aim for combos around $700–$900.
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Get Multiple Contractor Quotes
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Rates can vary by region and contractor. Ask for a detailed breakdown (material vs. labor vs. disposal).
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Consider Scope of Work
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Does the plumber need to relocate fixtures?
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Is there water damage or subfloor concerns?
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Will finishes like tile or glass doors be added later?
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These factors can significantly affect final cost.
