Future house Toyota Dream Home PAPI was deisigned and developed by a Tron Architect, Ken Sakamura, in collaboration with Toyota Home, Inc.
Their design principle was based on what they call Factor Four. Factor Four is an idea that while they reduce environmental effect by half, they also attempt to increase comforts of the residence by twice. (4 times better than current living environment)
Another importance is the fact that this project is created by Toyota, who has developed car technology, and is now applying that technology to residential construction.
This issue thus features the technological development and design strategies of PAPI, by mainly focusing on the ideas of engineers who realized this project.


Osamu Ito (General Manager Housing Engineering & Development Division Toyota Motor Corporation)

A House of Sustainability: PAPI

Intelligent House in the Age of Ubiquitous Computing
Ken Sakamura (TRON Architect)

Illustrated PAPI
01 Ubiquitous Network
02 Ubiquitous Network/Home & Car
03 Home Theater
04 Intelligent Storage System
05 Smart Security System
06 Smart Auto Door
07 A Bedroom for High Quality Sleep
08 Comfortable Air Conditioning System
09 Blind Shutter
10 Residential Elevator
11 Micro EV with Shopping Cart
12 Eco Interior Furnishing
13 Unobtrusive Window Screens
14 LED-HID Lighting
15 A Power Outage Proof House
16 Solar Hot Water Supply and Heating System
17 Dye-sensitized Solar Cells
18 Residential Fuel Cells

Interview with Noritaka Shimizu and Ken Sakamura

Data Sheets