I don't let the AI touch the numbers

Description and use

<p>My renovation cost tool ships with an empty price book. Out of the box, it will not price a single line. I think that is the most useful design decision in the whole project, and I expect some of you to disagree.</p> <h2> The setup </h2> <p>I build HousingWizard, a set of open source agent skills for home buyers. One of them takes a floor plan image and turns it into a checked plan, a list of quantities (floor area, wall length, stair counts), a cost range, and per trade quote packages you can send to contractors.</p> <p>The obvious way to build this in 2026 is to hand the floor plan to a m

Problem

<p>My renovation cost tool ships with an empty price book. Out of the box, it will not price a single line. I think that is the most useful design decision in the whole project, and I expect some of you to disagree.</p> <h2> The setup </h2> <p>I build HousingWizard, a set of open source agent skills for home buyers. One of them takes a floor plan image and turns it into a checked plan, a list of quantities (floor area, wall length, stair counts), a cost range, and per trade quote packages you can send to contractors.</p> <p>The obvious way to build this in 2026 is to hand the floor plan to a m

Outcome

<p>My renovation cost tool ships with an empty price book. Out of the box, it will not price a single line. I think that is the most useful design decision in the whole project, and I expect some of you to disagree.</p> <h2> The setup </h2> <p>I build HousingWizard, a set of open source agent skills for home buyers. One of them takes a floor plan image and turns it into a checked plan, a list of quantities (floor area, wall length, stair counts), a cost range, and per trade quote packages you can send to contractors.</p> <p>The obvious way to build this in 2026 is to hand the floor plan to a m

Evidence

I don't let the AI touch the numbers

Source