This crazy tiny home is only 4 feet wide and costs $499,000 — take a look inside

Nearly a century before tiny homes were trendy, an ultra-slender duplex appeared in Seattle.

From the front, the mustard-colored home looks like a relatively normal house — it's about 56 feet long. But from the side, the railroad-style duplex measures just four-and-a-half feet wide. 

The house, which was built in 1925, is currently for sale, listed at $499,000. It was purchased in 2014 for $375,000 by an architect named Clay Wallace, who told Zillow that he couldn't resist the home's Spanish Colonial Revival charm.

"It just spoke to me," he said.

GIF by Zillow

Inside, the 860-square-foot house looks beautiful and surprisingly roomy. You enter in the middle of the two-story home, and there's a bedroom and bathroom on each floor.

There are multiple theories as to why it's so skinny. Here's an explanation and a tour of the house by Zillow:

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