Wat Paknam Japan has a vihāra and an ubosot built in authentic Thai style by carpenters invited from Thailand.

Several times a year, thousands of Thai residents in Japan gather at the temple for festivals, during which Buddhist sermons and other events take place.

[1] In the 20th century, Wat Paknam expanded its focus to include international missionary work, with branches in various cities in the United States, New Zealand, India, and Japan.

It serves as the center of Theravada Buddhist beliefs for Thai residents in the Greater Tokyo Area and Japan.

[9] Wat Paknam has ordained people of non-Thai nationalities, including both Bhikkhus and Maechi (female monastics).

[9] After Luang Pu Sodh's death in 1959, Wat Paknam's group spent more than 30 years and visited Japan 10 times to continue their missionary work.

[12] The purchase of the land was financed by the sales of the Thai resident's import and catering business and the main temple in Thailand.

From 2012 to 2020, new construction was carried out with donations and labor services from Thai residents, focusing on smaller facilities such as the kitchen, small shrine, bell tower, handbasin (Chōzuya), and rest area.

[23] Ubosot is the most conspicuous building in the Japan brunch with its blue roof, marble walls, and gold-colored decorations.

[9] The upper walls of the ubosot are decorated with scenes from Jataka and other Buddhist stories[24] and a golden Buddha image is enshrined in the back of the hall.

[23] On festival days, there is a lecture hall where sermons are given and a temporary consulate is set up to provide passport renewal and other services for Thai residents in Japan.