Household Waste Billing App

A household waste billing app for RT administrators: record residents' bills, flag arrears, and compile income reports. Built independently from user research and information architecture through to an interactive prototype.

Waste-fee collection at the neighbourhood level is usually still manual, so arrears are hard to trace and the monthly report has to be recalculated every period.

User research was carried out independently through interviews and observation, to understand how RT administrators record fees and chase arrears.

• Administrators think in groups of residents (RT), not individuals — the app's data structure has to follow that mental model.
• Arrears have to appear as a prominent status, not hidden inside a bill's detail.

The app splits into two experience sides: admin (login, dashboard, manage bills, reports) and resident (viewing bills and arrears).

Splash → Admin Login → Dashboard → Individual Bill → Group Bill Detail → Reports. Admin signs in → sees the income summary on the dashboard → opens a resident's bill → checks arrears per RT group → compiles the period report.

The interface was built in Figma on one visual language: bill status cards, arrears tables, and an income summary on the dashboard. Paid and overdue are distinguished by colour, not text alone.

Six screens: splash screen, admin login, dashboard, individual bill with arrears, group bill detail for RT 01 residents, and reports.

Doing everything alone, from research to prototype, meant every decision had to have a reason I could explain — not just look tidy.