PlanSnapper

Square Footage & Appraisal Guides

140+ guides covering GLA measurement, ANSI Z765, floor plan tools, appraisal requirements, and square footage rules for every property type.

Browse by Topic

How to Measure Square Footage
Methods, tools, and step-by-step guides for every property type.
GLA & Appraisal Standards
ANSI Z765, Fannie Mae, FHA, VA, and USDA requirements explained.
Square Footage by Property Type
What counts as GLA for condos, ADUs, barndominiums, and more.
Square Footage in Real Estate
How square footage affects value, taxes, insurance, and financing.
Floor Plan Measurement Tools
Compare 3D scanners, sketch software, and browser-based tools.
Tool Comparisons
Side-by-side breakdowns of floor plan capture and measurement tools.
Free Appraisal Calculators
Floor plan sqft, GLA rules, appraisal adjustments, price per sqft.

All Guides

Garage Conversion Square Footage: Does It Add to Your Home Value?
Can You Use Google Maps to Measure Square Footage?
How Big Is a 1,500 Square Foot House? Room Breakdown
How Big Is a 2,000 Square Foot House? Room Breakdown
How Big Is a 2,500 Square Foot House? Room Breakdown
How Big Is a 3,000 Square Foot House? Room Breakdown
How Many Square Feet Is an Acre? (With Lot Size Examples)
How to Calculate Price Per Square Foot (and Why It Often Misleads)
How to Calculate Square Footage of an L-Shaped House
How to Draw a Floor Plan by Hand: Step-by-Step Guide
How to Get a Floor Plan of an Existing Home
How to Measure Square Footage with Your Phone
How Accurate Is Redfin Square Footage? What Buyers Need to Know
Three-Bedroom House Square Footage: Average Sizes by Type and Era
Two-Bedroom House Square Footage: Average Sizes and What to Expect
Vaulted Ceiling Square Footage: Does It Count?
What Counts as Square Footage in a House? The Complete Rules
Square Footage by Property Type: What Counts and What Doesn't
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Frequently Asked Questions

What does the Learn library cover?

The Learn library has step-by-step guides on residential square footage measurement: ANSI Z765 methodology, GLA vs total square footage, county assessor records, MLS accuracy, finished basements, additions, multi-story homes, and how appraisers calculate square footage in practice.

Who are these guides for?

Real estate appraisers verifying GLA, agents preparing listings, homebuyers verifying square footage before making an offer, homeowners measuring for insurance or refinancing, and investors underwriting acquisition targets. Each guide assumes no prior appraisal training.

Where do I start if I'm new to square footage?

Begin with "How to Measure Square Footage: The Complete Guide" or "ANSI Z765 Square Footage Standard Explained." Both cover the foundations: what GLA is, how it's measured, what counts and what doesn't, and why different sources show different numbers.

How often are guides updated?

Foundational guides (ANSI Z765, GLA basics) are reviewed annually. Topical guides addressing changes in lender requirements (such as the 2022 Fannie Mae ANSI mandate) or new tool releases are updated as needed.

Are the guides written by an appraiser?

Yes. Content is written and reviewed by Austin, a California-licensed real estate appraiser with 14 years of experience. The guides reflect actual day-to-day appraisal practice, not just theory.