The nation’s largest homebuilder is among investors in a San Francisco startup’s recent $325 million capital raise.

Opendoor said Wednesday that it raised the money in a fifth round of financing co-led by the Miami-based Lennar Corp. (NYSE: LEN), General Atlantic and Access Technology Ventures.

Opendoor facilitates the quick sale of homes by offering to buy eligible houses for a fee of about 7 percent, paid by home sellers, plus an extra cost to offset repairs that would be required in a traditional…