Customer Stories / PropVista

How PropVista increased web conversion by 120% with Assumer (sample)

Real Estate Client Portal Published on 30 Jun 2026
PropVista Dashboard

The Challenge

PropVista (a fictional sample company) is a property management agency aiming to streamline its client portal and deal tracking system. However, they were bogged down by legacy code, an outdated user interface, and extremely slow development cycles that were failing to keep up with market demands. Their web conversion rates were suffering because prospective clients were frustrated with the clunky property search experience.

The Solution

The PropVista team ran Assumer, the AI coding agent, inside their existing repo. They used the plan agent to map the legacy portal, agreed on a step-by-step rebuild, then switched to the build agent to rewrite the React components and API calls, reviewing every diff and running the test suite before each pull request.

  • Rebuilt the portal's UI components file by file, each change reviewed as a diff.
  • Refactored state management for the deal tracking dashboard with tests kept green.
  • Kept team conventions in an Assumer.md rules file so every change followed them.

"Planning in read-only mode first, then reviewing every diff, let us modernize a legacy portal without losing control of our own codebase."

— Sample quote, PropVista (illustrative)

The Results

Illustrative sample numbers: within a month of launching the new portal, PropVista's web conversion rose 120%, the rebuild shipped in 6 weeks instead of the planned 4 months, and the team merged 85 reviewed pull requests along the way.