A homeowner is unsure whether to accept a 1.5-inch drain for a new shower or break concrete to upsize to 2-inch, seeking input on functional and code compliance.

No existing solution clearly advises on functional safety vs. code strictness for 1.5-inch shower drains in tub-to-shower conversions.

Opp. Score

Severity

3Medium

Willingness to Pay

implied

Added

May 18, 2026

Implied Software Gaps

App that provides authoritative, location-specific code guidance for plumbing decisions without requiring a professional consultation

App Concept

CodeSmart Drain Advisor

A mobile app that helps DIYers and plumbers make code-compliant drainage decisions. Upload a photo or describe your situation, and the app gives clear, region-specific code guidance and practical recommendations, including whether to upsize or use existing drain.

Key Features

Photo-based drain measurement recognition
Local plumbing code lookup by address
Decision flowchart for drain sizing
Estimated cost/effort comparison for upsize vs. keep

Target Users: DIY homeowners and licensed plumbers in the U.S. working on shower or tub installations

Revenue Model: $4.99 per lookup or $19.99/month subscription for unlimited use and code updates

Part of App Idea

A homeowner is unsure whether to accept a 1.5-inch drain for a new shower or break concrete to upsize to 2-inch, seeking input on functional and code compliance.

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