Many realtors and 3D Capture Pros use these sources to estimate or corroborate the square footage (SF) of a property and you can as well!
① Online Realtor Data sites
Many real estate sites provide the Square Footage (SF) to most existing residential properties:
Zillow.com | Realtor.com | Propertyshark.com
Simply enter the property address to get the size info.
② GPS Mapping Calculators
These are online tools that estimate SF using GPS measurements via Google Maps and other GPS sources.
The SF is calculated by requiring you to outline the aerial shape of the property from a rendered satellite image.
③ At-Location Measurement
This option simply involves physically measuring the length & width of each room that makes up the property, including hallways. Laser measuring devices can make this task much easier than physical measuring tape. We recommend the DTape model below which has a measurement reach of 328 feet, memory, and multi-angle features.

