Marriott Design Standards Module 14 May 2026

Marriott International’s Design Standards are the architectural and operational Bible for franchisees, developers, and interior designers. While Modules 1 through 13 cover everything from lobbies (Module 4) to guest room casegoods (Module 7), is arguably the most critical—and notoriously strict—section regarding technical performance.

Download the official Marriott Design Standards Module 14 (Plumbing & Mechanical) from Marriott’s PartnerNet portal. Cross-reference every line with local code. And hire a plumbing engineer who has successfully delivered three Marriott properties minimum. Disclaimer: This article is a summary for informational purposes only. Always refer to the latest official Marriott Design Standards documentation available on Marriott PartnerNet. Marriott International reserves the right to update standards without notice. marriott design standards module 14

For hotel developers, mastering Module 14 means reduced maintenance costs, higher GSS scores, and faster Marriott approvals. Ignore it, and you risk costly change orders, delayed openings, and even franchise termination. Cross-reference every line with local code