Here I will explain about Roadside land price ( Rosenka ) in Japan.
In urban area, Japanese government prices roadsides land.
This price is used for calculation of inheritance tax, gift tax.
But, this price is sometimes used for reference of particular land value.
In this page, you can find roadsides land price.
In this map, 10480 means 10,480,000 yen.
So, land price of 1 ㎡ that faces to this road is 10,480,000 yen.
You can specify object lot by address, not lot number ( Chiban ).