Can Real Estate Agents Use PlanSnapper for Listings?

Yes. PlanSnapper was built for appraisers, but real estate agents are one of the most common user groups. If you have a floor plan — from the seller, a prior MLS listing, a builder, or a scan service — you can verify square footage before it goes in the MLS. Here is how it works.

Why agents use PlanSnapper

Listing the wrong square footage creates problems. If you publish a number that is higher than what the appraiser measures, the loan appraisal may come in low and kill the deal. If you publish a lower number, you are leaving money on the table for your seller.

PlanSnapper lets you check the number yourself before it goes in the MLS — using the same exterior-perimeter methodology that appraisers follow. That means fewer surprises at closing.

The most common agent workflows

1. Verify before listing. The seller gives you a floor plan (or you order one from CubiCasa). Upload it to PlanSnapper, trace the perimeter, set one wall length. You get the above-grade GLA in under two minutes. Compare it to the tax record — if they match, proceed with confidence. If they diverge, you know before the appraiser does.

2. Check comparables. When building a CMA, you want to know whether the square footage on competing listings is accurate. If a nearby home sold for $400/sqft but its square footage was overstated by 15%, the effective price per foot was actually $460 — which changes your analysis. A quick PlanSnapper check on the floor plan from that listing catches the discrepancy.

3. Document finished basement area separately. ANSI Z765 and most appraisers do not count finished basements as GLA. If your listing has a fully finished walk-out basement, you can measure the above-grade and below-grade areas separately and list both — a much more accurate picture than combining them.

4. Support disclosure obligations. Many states require agents to disclose square footage to the best of their knowledge. Using a tool that measures from a to-scale floor plan gives you a defensible basis for the number you list.

What you need

You need a to-scale floor plan and one known wall measurement. That's it. The floor plan can be:

A photo of the builder's original floor plan (if the seller has it)
A floor plan from a prior MLS listing or appraisal
A CubiCasa, Matterport, or iGUIDE floor plan (takes 5 to 10 minutes to generate)
A PDF from an architect or draftsperson
A clear photo of a hand-drawn sketch (if drawn to scale)

If there is no floor plan available, a CubiCasa scan (around $20 to $30) is the fastest way to get one.

What PlanSnapper measures vs what to list

PlanSnapper measures whatever perimeter you define. For MLS purposes:

Above-grade GLA: trace only the above-grade floors (main level + upper levels), using exterior wall dimensions. This is the number that appraisers will use in their report.
Finished basement: measure separately and list it separately in your MLS remarks. Do not add it to the above-grade GLA number.
Garage: do not include in GLA. List garage square footage separately if relevant.

When in doubt, list above-grade GLA as the primary square footage and note additional finished areas in the remarks. This matches appraiser methodology and reduces the risk of a valuation shortfall.

A note on liability

PlanSnapper is a calculation tool — the accuracy of the output depends on the accuracy of the floor plan you provide and how precisely you set the scale. Using PlanSnapper does not replace a licensed appraiser measurement, and PlanSnapper measurements should not be represented as certified or appraiser-verified. They are a reliable verification tool, not a professional certification.

That said, a PlanSnapper measurement from a to-scale professional floor plan is typically within 1 to 2% of a field measurement. For pre-listing verification, that level of precision is more than adequate.

Verify before you list

Upload a floor plan and get accurate above-grade GLA in under two minutes.

PlanSnapper for Agents