building a custom home One couple recently had an unpleasant surprise when they visited the Florida location where they thought construction workers had been building a custom home of their dreams for six months — only to find their waterfront Hammock Dunes lot completely empty. The new homes builders had built the Missouri couple’s $680,000 beach house on the wrong lot.

According to Realty Biz News, new custom homes builders Keystone Homes had accidentally been building the three-story house on the lot next door.

“We are in total disbelief, just amazed this could happen,” Mark Voss, the owner of the home who also runs a real estate for sale company in Missouri, said of the accident.

Keystone Homes’ vice president said in a statement that the company is trying to figure out a settlement with the owners of the lot the home was built on, a couple who bought the land in 2003 for $355,000. The Vosses had bought their lot next door in June 2012 for $160,000.

Like most custom design homes, the Voss’ residence is outfitted with luxury features and amenities, and was meant to be a vacation home for the couple. Realty Biz News reports that the house has five bedrooms, five and a half bathrooms, a home theater, game room and even a screened-in pool to complement its oceanside view.

Keystone Homes says the location error took place when surveyors first misplaced their stakes in 2013; the foundation survey and construction plan were then based around the misplaced stakes, and the construction workers ended up building a custom home on someone else’s land.

Debi Peterson, executive officer of the Flagler Home Builders Association — the house was built in Flagler County — says mistakes like these do happen, however infrequently.

“I can think of 10 in Flagler County since I’ve been working here for 18 years,” Peterson says. “You just don’t hear about them because they are not a million-dollar home that faces the ocean. Building is a complicated process. A builder has to coordinate more than 30 subcontractors. There’s always a risk.”