One of the biggest mortgage lenders in the U.S. said it would pay $1.75 billion to buy a well-known real-estate brokerage. The deal, once it goes through, could have major consequences for millions of home buyers.

Rocket Companies agreed to acquire Seattle-based Redfin in a $1.75 billion deal that will bring together the nation's largest mortgage

Redfin CEO Glenn Kelman on the benefits of joining Rocket: "Homes.com is running a Super Bowl ad, and Redfin might not be able to afford that. At least not on our own, but Rocket ran a Super Bowl ad."

Dan Gilbert's Rocket Companies plans to buy the online real estate brokerage firm Redfin, a $1.75 billion deal that would expand Rocket's presence in all things residential real estate. The all-stock deal was announced Monday morning and, pending approval by Redfin shareholders, is expected to close in the second or third quarter.

Rocket Companies’ planned $1.75 billion acquisition of Seattle-based brokerage Redfin sparked questions about a potential competitive threat to fellow Seattle real estate company Zillow Group, another key player in the digital real estate arena.

Redfin is being acquired in an all-stock transaction that values the real estate listing platform at $1.75 billion.

The Detroit-based financial technology group will pay $12.50 for every Redfin share in an all-stock transaction, according to a statement Monday that confirmed an earlier Bloomberg News report. The price represents a premium of 63% over the volume-weighted average price of Redfin’s common stock for the 30 days through Friday.

Rocket Companies announced a $1.75 billion deal to acquire Redfin. The mortgage titan hopes to leverage Redfin to take market share.

Redfin CEO Glenn Kelman on the benefits of joining Rocket: "Homes.com is running a Super Bowl ad, and Redfin might not be able to afford that. At least not on our own, but Rocket ran a Super Bowl ad."