Deregulation of hotel license in Japan
In the case you advertise your real estate at website of airbnb and receive fee, most of cases, your activity is included in Hotel Business, Inn business, lodge business.
So, generally you needed to obtain Hotel license or Inn license or Lodge license (referred to “hotel license”) to operate it legally.
Private lodging Law
However, in 15th, June, 2018, new Minpaku law became effective.
In 15th, June, 2018, hotel business law is also scheduled to altered.
Before this alternation, hotel (western style hotel) and Inn (Japanese style hotel) were differently treated.
Before this alternation of law, in order to obtain hotel license, the rooms should be western style. You need to prepare bed. And each room should equip with key and each room should be separated by wall.
However after 15th, June, 2018,it is not problem any more.
And in order to obtain Hotel Inn License, room area should be ７square meters or more.
Depending on area of your real estate, you do not need to prepare Front desk as far as you can use ICT equipment (video camera etc. There is a company that provides such equipment. Your guest can enter your hotel by smartphone. So, you do not need to deliver key).
In the case of Lodge business license, you do not need to prepare front desk even before alternation, if capacity of guest is ten or less.
However you still need to be ready for solve emergency situation and confirm content of guest ledger. And you need to prevent from entering a person who is not guest of your Hotel.(Someone other than your guest will try to stay in your hotel with your guest).
Regulation relating to the number of lavatory will be removed. As far as you need to prepare suitable number of lavatory.
On the other hand, maximum amount of fine for non licensed operator ( a person who operates hotel business without license) becomes up to one million yen.
Each municipal government, city office, ward office can stipulate each ordinance. So, depending on city, you still need to prepare necessary facilities, including front desk and station of employee.
Even after alternation of hotel business law, you can not obtain hotel inn business license at exclusive residential zone.