DomiProp

The problem

Landlords in the Dominican Republic have to handle ISR and IPI, keep Formato 606 expense records, write lease contracts that comply with Ley 85-25 and, from 2026, move to mandatory electronic invoicing. Generic rental trackers ignore all of it, and getting the details wrong costs people money.

The design

DomiProp is a “contador digital”: it turns those obligations into a guided monthly routine. An ISR calculator that figures rental income tax the way landlords here file it, an expense organizer that keeps deductible expenses in the shape the DGII wants for Formato 606, lease contracts that comply with Ley 85-25, reminders that surface filing dates before they turn into fines, a dashboard for income, expenses, ISR withheld and occupancy, and shared workspaces so a landlord can invite their accountant to work on the same data.

It’s a pnpm monorepo: a NestJS and Prisma API on PostgreSQL, a Next.js (React 19) web app and an Astro marketing site, all in TypeScript. The shape of the data is defined once and shared, so the tax logic can’t quietly drift apart between the backend and the frontend.

Where it stands

Built and getting ready for its first users ahead of the 2026 e-CF deadline. The code is private, so this page links to the live product instead of a repo.