Atelier A5 Architecture, Architects Japan, Houses, Residential buildings, Design office

Atelier A5 Architects : Architecture Studio Japan

Japanese Architecture Practice. Tokyo design studio news and information

post updated 29 March 2026

Atelier A5 – Key Projects

Major Residential Projects by the Atelier A5 studio, alphabetical:

A.House, Zenpukuji, Suginami-ku, Tokyo, Japan
Date built: –
A single family home located in downtown Tokyo. The required functions of the combination live / work environment dictated the evolution and design of the residence which was also bound by local regulations for the site.

AK.house, Saitama, Japan
Date built: 2017

B House, Tokyo
Date built: 2005

IN.house, Tokyo, Japan
Date built: 2017

KA House, Setagaya, Tokyo
Date built: 2006

KAT.house, Kanagawa, Japan
Date built: 2017

OH.house, Tokyo, Japan
Date built: 2017

Y House, Zushi, Kanagawa Prefecture, Japan
Date built: 2005

More residential architecture projects by this Japanese architects studio online very soon

Location: Tokyo, Japan.

Tokyo Architecture Practice Information

A contemporary architect studio based in Tokyo, caoital of Japan.

Architects Office led by Sadahiro & Yuko Shimizu + Masatoshi Matsuzaki

Architecture practice established 2002

Japanese Architects

Recent design by this architecture firm:

17.05.11
HO.house

17.04.17
AO.building、FM.house

17.02.20
TZ.house

17.02.07
ID.house、G.house

17.02.02
OH.house

17.01.25
IN.house、KAT.house

17.01.12
SHA.house、O.house

16.11.07
KGA.house

16.08.23
OO.house

16.06.10
HA.house、AK.house

16.03.16
NR.house、MU.house、IS.house

Contact details for the design firm:

address
〒156-0052
東京都世田谷区経堂3-3-14

tel
03-6804-4931

fax
03-6804-4932

email
A5(at)a-a5.com

Tokyo Architect – design firm listings on e-architect

Website: www.a-a5.com

Atelier A5 Architects is a contemporary architecture studio based in Tokyo that focuses primarily on residential projects and custom houses. The practice was established in 2002 and is led by a design team including Sadahiro Shimizu, Yuko Shimizu, and Masatoshi Matsuzaki, among others.

The studio is known for designing compact, intelligently planned homes that respond to the dense urban conditions of Tokyo, often working with tight site constraints to maximize space, light, and privacy. Their work frequently features stacked volumes, carefully composed facades, and creative use of materials to reconcile interior functionality with exterior expression within limited footprints.

Key examples of Atelier A5’s work include projects such as A.house, SN.house, FW.house, and IN.house, all of which explore spatial innovation, urban living solutions, and site‑specific design in the greater Tokyo area.