Travis Kelce joins growing trend of building 'iceberg houses

NFL player Travis Kelce is reportedly constructing a man cave, featuring a golf simulator, beneath his new $6 million mansion in Leawood, Kansas. This move aligns with a growing trend among homeowners who are choosing to expand their living spaces underground rather than building upwards.

The concept of iceberg houses—homes with more space below ground than above—is gaining popularity. According to the Robb Report, these homes represent "the newest real estate flex for wealthy homeowners." Justin M. Riordan from Spade and Archer Design Agency explains that iceberg homes provide a modest exterior while hiding luxurious interiors below ground. He states, “The hidden opulence of iceberg homes reflects a modern understanding that true wealth is about the quality of life inside, not how much of it is on display."

These subterranean spaces often include amenities such as swimming pools and wellness centers. Real estate investor Ron Myers notes that basements offer additional space without needing to expand the home's footprint. However, building an iceberg house can be expensive; luxury developers estimate costs in Los Angeles may exceed $1 million.

Not everyone supports this trend. Cate Rogers, East Hampton councilwoman, advocates for more regulations on basement renovations since these lower-level finishes aren't included in home square footage calculations.

Iceberg homes have been popular in London for over a decade, with thousands of basements receiving planning permission between 2008 and 2017. This includes various amenities like gyms and wine cellars.

In the U.S., finished basements are attractive selling points in places like Atlanta and Phoenix due to their added space benefits without increasing energy costs for cooling.

While iceberg homes can also generate income when used as rental spaces, they come with potential risks such as structural complications during construction and environmental concerns due to concrete use. Moisture control remains crucial for maintaining livable conditions in these spaces.

Interior designer Susann Goerg suggests using reflective surfaces and layered lighting to brighten below-ground areas lacking natural light. Adding greenery can enhance the atmosphere by connecting occupants to nature.

Examples of notable iceberg houses include the Underground House in Las Vegas with its extensive subterranean features and an Aspen property designed by Sterling McDavid featuring luxurious amenities like guest suites and a spa.