@gullfo said:

i'd probably done something a bit different - the opening is into the garage or other non-direct home access point - then a fixed size box which once the opening door is shut, a conveyor moves the package out and into the non-home room. video monitor warnings. etc. to try and prevent mischief. as a small edit - re-purpose some robotic vacuum/sweepers to perform the conveyance...

Thanks Gullfo for thee comment / suggestions. I take your point as regards installing the ParcelShute in a garage door of other position in the property walls.

My initial thinking was that it would be easier for the property owner to just upgrade toe front door and have a new front doo with a ParcelShute installed. However, I will give the options you mention some thought.