Forget supercar showrooms filled with carbon-fibre monsters and six-figure price tags. Deep in Gifu Prefecture, Japan, there is a place where old Nissan Skylines are treated less like obsolete machinery and more like endangered species.
Welcome to R31HOUSE.
Based in Sakahogi, Gifu, R31HOUSE is a specialist workshop dedicated primarily to the seventh-generation Nissan Skyline the R31. Founded by Taro Shibata, the company has become one of the world’s most recognizable names when it comes to restoring, modifying and preserving this often-overlooked chapter of Skyline history.
And calling it a workshop doesn’t really do it justice.
Behind the business sits what has become famous among Skyline enthusiasts as a kind of Skyline graveyard, a huge collection of R31s and donor cars accumulated over decades. Reports and footage of the facility have shown hundreds of vehicles waiting to be restored, dismantled for parts or used to keep another Skyline alive.
In other words, if you’re looking for an R31 part that Nissan stopped making decades ago, there is a very real chance Shibata-san has one somewhere.
It All Started With One Broken Skyline
The story of R31HOUSE is surprisingly simple.
Shibata’s obsession with the Skyline began when he was a university student and owned an R31 himself. According to his own account of the company’s history, the car was constantly breaking down, forcing him to learn how to repair it simply to keep it on the road.
That frustration eventually turned into an obsession.
R31HOUSE was established in 1997, according to Tokyo Auto Salon’s official exhibitor profile, initially developing into a specialist business covering vehicle sales, maintenance, tuning, restoration and original R31 parts.
What started as a passion for one troublesome Skyline eventually became a full-blown mission to preserve an entire generation of Nissan’s history.
The R31 Isn’t Just Another Skyline Here
The R31 arrived in the mid-1980s, sitting between the boxy R30 and the now-iconic R32. Today, the R32 GT-R, R33 GT-R and R34 GT-R dominate the JDM conversation.
The R31 often gets forgotten.
That is precisely why R31HOUSE exists.
The company describes itself as a specialist in the 7th-generation Skyline, providing everything from repairs and maintenance to restoration, tuning and the development of dedicated R31 parts.
Its official website currently lists services covering used-car sales, inspections, maintenance, R31 Skyline parts and even Skyline-related merchandise.
R31HOUSE has also demonstrated that its ambitions extend far beyond simply keeping old cars running.
At the 2015 Tokyo Auto Salon, the company displayed an R31 Skyline GTS-R and an R31HOUSE concept, demonstrating just how far the humble boxy Skyline could be pushed while retaining its original character.
And Then There’s the Graveyard
This is the part that makes R31HOUSE genuinely fascinating.
Most restoration shops have a few donor cars tucked away somewhere.
R31HOUSE appears to have taken the idea and multiplied it until it became an ecosystem.
Its enormous stockpile of Skyline shells and donor cars provides an invaluable source of components for restoration projects. Enthusiast reports have described hundreds of Skylines stored around the facility, while a 2025 feature reported the collection had reached roughly 700 donor cars.
To an ordinary person, it looks like a scrapyard.
To an R31 owner, it is Disneyland.
Every damaged bumper, faded trim piece, missing interior component or increasingly impossible-to-find mechanical part represents another chance to bring an old Skyline back from the dead.
And that is perhaps the most important thing R31HOUSE does.
It doesn’t simply restore cars.
It preserves the parts ecosystem required to keep an entire generation of cars alive.
From Restoration to Serious Performance
R31HOUSE isn’t interested in making every Skyline a museum piece.
The company also develops performance components and builds modified cars, including turbocharger kits and engine-management solutions for the RB20DET-powered R31.
One example documented in Japan was an HR31 Skyline fitted with an RB20DET, an R31HOUSE turbocharger kit and R31HOUSE Premium ROM engine management, alongside other performance upgrades.
That philosophy is important.
An R31 doesn’t have to remain completely original to be valuable.
It can be restored.
It can be modified.
It can be made faster.
It can even be turned into something completely wild.
As long as another R31 survives because of it, the mission continues.
R31HOUSE Became Bigger Than the R31
Over the years, the company’s influence expanded beyond restoration.
R31HOUSE eventually entered the hobby industry with radio-controlled cars and other products, while Shibata’s automotive business also became associated with Shibatire, a Japanese performance-tire brand.
But the Skyline remains at the heart of the operation.
That is what makes the place so unusual in an automotive world increasingly obsessed with new technology.
While manufacturers are busy developing EVs, autonomous systems and software-defined cars, R31HOUSE is fighting a completely different battle:
How do you stop a 40-year-old Nissan from disappearing?
The R31’s Second Life
There is something almost romantic about the whole operation.
The R31 Skyline was never destined to become the poster child of the JDM boom in the way the R32, R33 and R34 GT-Rs did.
Yet decades later, enthusiasts are rediscovering its sharp boxy styling, old-school proportions and RB-powered character.
And places like R31HOUSE are helping make that possible.
The company has even been recognized by major automotive events, with Tokyo Auto Salon describing R31HOUSE as a specialist covering R31 sales, maintenance, tuning, restoration and original parts development.
So while the rest of the world argues over which GT-R is the ultimate Skyline, R31HOUSE is quietly making a different argument.
Maybe the forgotten Skyline deserves another chance.
And judging by the sheer number of dead R31s waiting behind the workshop, Shibata-san has already collected enough spare parts to make sure that argument lasts for a very, very long time.
R31HOUSE is a reminder that the most important car collections aren’t always the ones filled with million-dollar Ferraris. Sometimes, the more fascinating story is a mountain of forgotten Japanese cars sitting behind a workshop in Gifu, waiting for someone stubborn enough to bring them back. The R31 may not have the instant celebrity status of an R34 GT-R, but R31HOUSE has turned its survival into a mission and that makes this place far more interesting than another shiny supercar showroom.
What do you think about R31HOUSE and its massive Skyline collection? Would you restore an R31, build one into a performance machine, or leave it completely original? Let us know in the comments.
Adhe is part of the 88 Eight Box Editorial Team, covering JDM culture, motorsport, automotive technology, and industry news. The team focuses on delivering original automotive stories, reviews, and insights for enthusiasts worldwide.
