Mauricio Umansky Building South L.A. Homes with Habitat For Humanity

Mauricio Umansky‘s not just trying to sell homes … he’s also giving them away for free — this after he and his daughters help finish building them that is!

We caught up with The Agency founder and CEO Thursday at a construction site in South Los Angeles — where the reality star and his daughters were helping build brand new houses alongside Habitat for Humanity in what was clearly a team effort.

Umansky explained they’re in the middle of one of their many build days … a partnership with Habitat that sees members of The Agency dedicate their own time and money to building houses for people who are in need.

MU’s making it a family affair too … with his daughters helping out at the building site with drills and staple guns in hand. Mauricio couldn’t help but give them a hard time — saying dad’s not comin’ to the rescue next time they need a lightbulb changed!

In fact, Umansky’s daughter Alexia — who he shares with Kyle Richards — even gave us a tour of the soon-to-be-finished house … including the heartfelt messages she and her dad wrote on one of the kitchen walls

Ultimately, Mauricio kept harping on how great it is to give back to the community … almost certainly thinking of his own humble beginnings before The Agency really took off.

BTW … Mauricio didn’t mention Kyle during our talk Thursday — instead choosing to focus on the great work The Agency’s doing.