"I want a bit of stability in my career, I'm 26 and I've got a young family as well, so I want to settle," Davenport said.
"I haven't just come up here for six months away from West Ham with a view to going back - I'm hopefully coming here to get in the team, perform well and convince the manager and fans that I can add something to the squad.
"Then, hopefully, something might happen in the summer. The foundations are here at Sunderland. They stayed up last year, so it's a case of kicking on, which is something that West Ham have done since getting back into the Premier League.
"They're sitting in eighth now. I don't think that happens overnight: it's a progression.
"One of the things with West Ham is you couldn't train properly because the pitches were always waterlogged. The facilities here are brilliant, it's nice to be able to train whatever the weather."
The Bedford-born former England Under-21 international began his career at Coventry, before moving to Tottenham five years ago in a £1.3 million deal and then switching to Upton Park in a £3m transfer two years ago.
"It was a relief to get something sorted in January," Davenport added.
"From West Ham's point of view, I think they were only interested in doing something on a permanent basis, but Sunderland could only do something on loan, so that dragged it out a bit.
"For me, that time of year (the transfer window) is a nightmare. I just want to establish myself somewhere and feel at home somewhere, instead of it being 'He's going there' or 'He's not staying'. I want my name not to appear in the transfer gossip columns next window."
Davenport, who arrived on loan with Manchester City defender Tal Ben Haim, has been warned he faces a fight for a place in the Sunderland side by manager Ricky Sbragia.
That is due to the impressive recent performances of central defensive pairing Anton Ferdinand and Danny Collins.
"They are playing out of their skins," said Sbragia. "They have been consistent, reliable and are growing in confidence as well. They are there to defend and that's what they have done in recent weeks.
"Danny did remarkably well against Stoke on Saturday, he didn't give (James) Beattie much and won a lot in the air, he's been fantastic in general."
"The others will have to be patient," he said. "It would be unfair to change it at the minute."