The wealthiest Americans have a new attitude about homebuying — and it has led to a crisis in the luxury market
1187NorthHillcrest011
1187NorthHillcrest011

(A home on the market for $135 million in Beverly Hills, California.Courtesy of John Aaroe Group)

Before Zillow, Trulia, Redfin, and Realtor.com, someone interested in buying a home would have to consult a local realtor to access information about what was available on the market.

But as these online property databases rose to prominence, homebuyers became more picky. That is leading to some serious problems in the luxury market, where expensive homes are increasingly taking longer to sell.

Websites like Zillow and Trulia let consumers find what the current owners had paid for a particular home, the price per square foot compared with that of the rest of the neighborhood, and even how many people had viewed the listing page before you. Homebuyers today are better equipped to understand when a home they're seeing is overpriced, which could explain, in part, why some of America's most expensive homes have languished on the market.

The highest end of the American real-estate market has indeed seen a fair bit of softening over the past several months.

According to recent data from Trulia, since last year the US luxury real-estate market has seen a significant increase in for-sale homes needing to reduce their asking price. Trulia's analysis, which looked at for-sale listings at the metro and national level, showed that 11.99% of luxury listings — defined as the top third of all active listings — had experienced a price reduction since first appearing on the market.

That's an increase from 11.01% last year and higher than the 10.66% for all for-sale listings nationally.

"The luxury segment is slowing down more quickly this year than it had in the past. California markets, as well as markets in Texas, are the two major ones that have seen the largest increases in price reductions. Home prices got too high too quickly, and people who listed these homes for sale kind of got ahead of themselves," Trulia data scientist Mark Uh told Business Insider, noting that buyers who know more about the market could wait to make an offer until prices come down a bit.

"In the meantime, income hasn't caught up with such huge increases in real estate prices," he said. "There's not as many people who can afford those homes — supply has grown faster than demand."

one57 model residence 58 B
one57 model residence 58 B

(A model apartment in New York's One57 luxury condo building.Marco Ricca/Extell Development)

The situation has changed from just a few years ago, when the luxury market — especially in places like New York City and Miami — was hot and there wasn't much supply to go around. But now that so many luxury condo buildings have been completed or are nearing completion, supply is way up, and buyers have more options and no sense of urgency to choose between them.