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Office · Tokyo · Professional services

Celm — Tokyo: a lounge called TAMARU BA, a beer tap on Thursdays and Fridays, and booths set out like a street

When attendance at Celm’s office fell to about one in ten during the pandemic, conversation stopped and managers struggled to hold teams together. The answer was not to order people back, but to make an office they would want to come to — in an era when, as Okamura puts it, you no longer have to.

Company Celm, Inc. (株式会社セルム) ↗Founded 2016Seating 100% free address, extended from sales to every departmentConcept TAMARU-BA — “a place where things gather”Booths Six fully closed work booths, always fullOffice design Okamura Corporation
The open work area
The open work area

Concept

Box, happening, and blank space

Celm had a culture of company clubs that the pandemic had stopped. Okamura proposed an office that would stand for its slogan, “Activate Your Potential”, and named the concept TAMARU-BA: a place where people and ideas gather, so that new things can sprout from what has built up.

It has three elements — hako, the box itself; koto, the things that make people want to come; and yohaku, blank space that leaves room for people to act on their own. Existing walls were kept where possible to hold down cost.

The work area
The work area

01 · Entrance

Where you say “I’m back”

A warm wooden sofa space greets you at the door — a meeting point for colleagues heading out together and a place to receive quick visitors.

The entrance
The entrance

02 · TAMARU BA

A curved wall you can write on

Beyond is the work lounge, TAMARU BA, the heart of the office. An existing curved wall has become a whiteboard. Lockers are at the back, so everyone passes through the lounge on the way in, and the work areas spread out from it without dividers.

TAMARU BA
TAMARU BA

03 · The kitchen counter

Beer day

TAMARU BA has a kitchen counter with high chairs and a beer server. The taps open on Thursday and Friday evenings — a small reason to come in on those days. In the mornings, the president can often be found sitting at the counter.

The kitchen counter
The kitchen counter

04 · Work area

See who is in before you go

The floor is open, almost without walls, and entirely free address, with big tables, family-restaurant booths and focus booths. It moves from lively near the lounge to quiet at the far end. A beacon-based system shows, even from outside, who is in the office and where they sit.

The work area
The work area
The work area
The work area

05 · Booths and courtyard

A street of booths, with a garden between

Six fully closed booths serve web meetings and online interviews; two are larger, for long solo online training. Instead of lining them up, Okamura staggered them like houses on a street. Three are set at angles around a triangle of plants, a small courtyard you can see from inside. Each booth has its own aroma.

The booths
The booths
The booths
The booths
CompanyCelm, Inc. ↗
DesignOkamura Corporation
Photography© Okamura Corporation (from Okamura’s Design Stories)
Sourceオカムラ Design Stories, “株式会社セルム様の事例”, re-reported by WALL ↗
PublishedOctober 2026
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