Home renovator needs to connect shower and toilet drains to existing septic line with limited vertical space but is unsure of code-compliant fitting layout.

No easy-to-use, code-checking tool for DIY plumbing layouts.

Severity

3Medium

Willingness to Pay

implied

Added

Jun 4, 2026

Workarounds Described

posts question on Reddit asking for code advice
mentions measuring limited vertical space without a design tool

Implied Software Gaps

Code-compliant drain layout design tool with automatic fitting spacing rules

App Concept

DrainCode Pro

A mobile app that lets DIYers and plumbers sketch a drain layout, check it against local plumbing codes (IPC/UPC), and get instant feedback on fittings, distances, and venting. No more guessing or posting on forums.

Key Features

Drag-and-drop fitting palette with real-time code validation
Built-in code reference with local amendment lookup
3D visualization of drain slopes and distances
Shareable report for permit submission

Target Users: DIY home renovators and small plumbing contractors in residential construction

Revenue Model: Freemium with $9.99/month pro tier for unlimited plans and code updates

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