Israeli couple Adi Tatarko and Alon Cohen found the process of revamping their house in Palo Alto back in 2009 far more difficult than they expected. “We had a hard time finding good resources and inspiration to help us articulate a vision for our home and to find the right professionals to make our vision a reality,” Tatarko, who is CEO, told CNNMoney.

The couple, who Tatarko said had “always loved interior design,” were inspired to set up an online platform to make home renovation easier. That year, they launched Houzz, which connects users with interior designers and architects.

Today, the site has more than 40 million unique monthly users, according to its founders. Related: One slogan made this T-shirt company millions One year after launching Houzz, Tatarko and Cohen quit their jobs — she worked in financial planning, he was an engineer at eBay (EBAY) — to work on the business full time.

Cohen coded the first version of the site. Houzz grew by word of mouth, enabling them to hire their first employees in 2010.

Four years later, the company expanded into the United Kingdom, its first market outside the United States. Homeowners can brainstorm ideas with professionals, preview what pieces look like in their home using virtual reality, and buy furniture on the site. Read more from…

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