I would note that CubiCasa is courting trouble with its blatant lies and misleading information. Software companies, generally speaking, are very careful not to promise anything. In fact, invariably they will state in their license agreements that by using the software, the user is assuming all risk. But even with such license agreements, they need to avoid contradicting them with advertisements to the contrary. -- They are very very cautious. CubiCasa, as a software company is totally reckless in its claims. It is not very smart at all. It could be sued for misleading advertising.
1. CubiCasa does not do exterior measurements, because it uses iPhones for measurement. iPhones have Lidar, but as I have already stated on this forum, they use Lidar wavelengths that will not damage eyesight if the laser is shined into an eye, most likely wavelengths around 905nm. - But, this puts them in the range that overlaps with sunlight - so that exterior measurements are usually
messed up by the sun - and this invariably happens because in taking exterior measurements the iPhone winds up being pointed almost directly at the sun at certain times. Now, drone Lidar is a different story - they use wavelengths around 15,000nm - which is not disrupted by sunlight - but if you stare into a 15,000nm laser for any length of time it can burn your corneas or cause cataracts. However, when drones are used for mapping they are usually on autofly and there is nobody staring at them - and certainly, that is the assumption, because they are constantly moving according to some pattern over the landscape. Drone Lidar can indeed make very accurate measurements of a structure in daylight, also considering the drone if flying overhead and pointing downwards - away from the sun.
2. CubiCasa can make accurate measurements of interiors if they are free of clutter and there are no disruptive objects. Many of the homes I have appraised are very cluttered, so cluttered you can't really see some of the walls. There are also bookshelves and embedded appliances. On top of these interior measurements, they add estimated thicknesses of walls to get exterior measurements. But this is not by any means any kind of measurement. It is certainly in no way a physical measurement of the exterior dimensions.
3. I would guess that CubiCasa makes liberal use of AI analysis of the associated photos and available property databases to reconcile problems. But this is guesswork - not measurement. As good as it may be in creating a final floor plan, it nonetheless is simply guesswork when it comes to exterior measurements and GLA calculations.
A final note - many in the real estate appraisal industry are engaging in blatant lies and misleading information -- at the highest levels. They seem to think they are so high and almighty, - that lower-level "peons" will just accept their proclamations. The problem is widespread. --- You should question everything no matter the source.
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