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appraisal-OS home
In-app sketch

GLA math that runs as you draw.

Draw rooms on your phone or tablet — the tool computes ANSI Z765 finished-above-grade GLA in real time. Below-grade and non-finished areas split out automatically. No second app, no spreadsheet, no math errors.

Z765
ANSI compliant
Live
GLA recalculates on each edit
0
Separate sketch-app license
PWA
Runs on phone or tablet
The workflow

How it works, step by step.

  1. 01
    Pick graph scale

    Imperial or metric, grid snap on or off. The tool starts clean.

  2. 02
    Draw the exterior walls

    Tap corners. L-shapes and bays are first-class, not a hack.

  3. 03
    Add interior partitions

    Kitchen, living, bedrooms, baths — label each. Finished-above-grade flag per room.

  4. 04
    GLA panel updates live

    Right-hand panel shows finished above grade, below grade, and non-living-area totals.

  5. 05
    Export to the URAR

    Room count and GLA flow straight into the Improvements section. Sketch PDF attaches to the workfile.

What's included

Everything in this feature.

ANSI Z765 math

Finished-above-grade only for GLA, with proper below-grade and non-living separation.

L-shapes + bays

Non-rectangular geometry supported, including angled walls and radius corners.

Room tagging

Each room is a typed room (kitchen/LR/DR/BR1…) with finished/non-finished and above/below grade flags.

CubiCasa fallback

Prefer a phone walkthrough? The CubiCasa connector creates a professional floor plan without manual drawing.

Sketch PDF

One-click render of a clean floor plan PDF for the workfile and lender package.

Offline capable

The PWA stores sketches locally so you can draw in a no-signal basement. Syncs when you're back online.

FAQ

Quick answers.

  • Yes. The GLA math implements the ANSI Z765-2021 standard (finished above grade only), with below-grade split out for the Improvements section.

Ready to see it live?

Free for the founding cohort. No credit card. You can be working on a real order in under two minutes.