I know two women in the real estate business - both regularly fuck male (and sometimes female) clients.
One of the two is my wife KK's best friend, Becky. She's KK's non-vanilla confidant, female lover/girlfriend, and "running buddy." Becky is extraordinarily successful, a licensed agent/broker, runs her own agency, handling sales, property management, and a few of her own lease and rental properties. Becky has fucked hundreds of clients over the years, from sealing the deal, celebratory fuck encounters, to repeat client transactions. She's absolutely fucking stunning, gorgeous, flame-red hair, porcelain complexion, great legs, ass and tits - KK says none of her male clients can resist her charms, that Becky has her pick, married or not.
KK and Becky have enjoyed FMF threesomes at the properties Becky shows and manages - many of the managed properties are fully furnished, offering a free, often high-end fuck venue. Becky has lots of corporate clients that need temporary living arrangements. A recent encounter took place in one of Becky's residential properties - she took KK along for a showing with a new client, the CFO of a well-known corporation. They spent a full half day fucking the guy's brains out.
Lisa, the other of the two is a former affair partner. She's relatively new to real estate, about 18-months in. Lisa is divorced at present. She's gorgeous, affable, outgoing, and almost always horny. About six months after she got licensed, Lisa "accidentally" allowed herself to be seduced by a male client. That experience amped up her interest in clients as potential sex partners, and she's taken off like she's on fire. I talk with her regularly, and get the dirty details of her sexy sales encounters.
As I understand it, this is more common in the business than not - that's insight from both Becky and Lisa. It's a mix of personality type, opportunity, including venue, and timing.