Why is landlord compliance software built like enterprise property management?

I’m building LetDue for self-managing landlords with one to three properties, and I keep returning to a product-design question:

Why does software for remembering a handful of important property deadlines so often turn into a full property-management system?

The landlords I’m designing for do not necessarily need rent collection, tenant messaging, maintenance tickets, accounting and a new operating system. They need to know:

• Which evidence is missing?

• What expires next?

• When should they start acting?

• Can the certificate itself be stored with the reminder?

LetDue’s current answer is deliberately narrow: upload or enter gas safety, EICR, EPC, insurance and licence dates; receive a plain-English action list; then get reminders at 90, 30, 14 and 7 days plus the due date.

The tradeoff is that focus can look “too small” next to an all-in-one suite. My belief is that a narrow product can win if it removes setup, earns trust quickly and makes one recurring risk genuinely hard to forget.

I’d value honest feedback:

1. Is documents + deadlines + reminders a complete enough job to deserve its own product?

2. Where would you draw the line before it becomes another bloated property platform?

3. For a compliance-adjacent tool, what would make you trust the reminders?

The product is scheduled to launch here on 28 July, but I’m more interested in the boundary of the problem than prelaunch votes.