NBC Occupancy Calculator

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About this app

NBC Occupancy Calculator is an essential utility designed specifically for civil engineers, architects, plumbing designers, and
urban planners. Developed by Harshz Technologies Private Limited, this powerful tool allows professionals to instantly calculate
the estimated occupancy population for any building project in strict accordance with the National Building Code (NBC) Part 9
guidelines.

Accurate population projection is the critical first step in designing sustainable water supply systems, determining sewage
treatment capacities, and calculating plumbing fixture limits. Instead of manually cross-referencing complex code tables and
performing repetitive arithmetic, simply select your building classification, input the physical specifications (like floor
area, number of beds, or seating capacity), and let the app handle the rest.

Key Features:
• Comprehensive Building Classifications: Supports accurate calculations across Residential, Commercial, Institutional,
Assembly, Industrial, and Storage facilities.
• Instant Population Projections: Instantly computes precise occupancy requirements tailored to your exact floor plan and
building usage.
• Built-In NBC Reference Guide: Includes an integrated quick-reference library for National Building Code Part 9 standards so
you can verify design requirements without ever leaving the app.
• Professional Reporting: Export your calculated specifications and occupancy requirements directly to professional PDF reports
or Excel spreadsheets. Easily save, print, or share them with your design team and municipality officials.
• Fast & Modern Interface: A clean, premium user experience optimized for rapid data entry whether you are on the construction
site or in the office.
Ensure your water supply and plumbing designs are accurate, compliant, and mathematically sound. Download the NBC Occupancy
Requirement app today and streamline your engineering workflow!

*Disclaimer: Verification with the local municipality and national standards is always advised before applying these
requirements to final water supply sizing or plumbing designs.
Calculate water supply and plumbing occupancy requirements based on NBC Part 9
Updated on
Jul 5, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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What’s new

Calculate Occupancy as per NBC