The phrase "are planning to settle" is correct and usable in written English.
You can use it when discussing future intentions or arrangements regarding establishing a residence or making a permanent decision.
Example: "They are planning to settle in the countryside after retirement."
Alternatives: "intend to establish" or "are looking to reside".
Word is spreading that UNRWA is planning to settle us in a new camp of makeshift houses.
Now signed to Berlin-based !K7 Records, he's planning to settle down in London for a while after a long period of being "glamorously homeless".
The News of the World is believed to be planning to settle a court case which threatens to disclose further evidence of the involvement of its journalists in illegal information-gathering by private investigators.
'He had a cutting from a local paper that said that he was a British spy which he said he was going to have framed.' Everybody who knew him said he was planning to settle down and was as happy as he had ever been.
Burgess was less conventional — a more reckless drunk, and incautiously homosexual — but in the days before he disappeared he had told a friend that he could never live abroad and was planning to settle down to "his great task, the addition of a final volume to Lady Gwendolen Cecil's biography of the Tory Prime Minister, Lord Salisbury, which he thought the best biography in English".
If you're planning to settle down, buy.
The myth goes that in 1620, the Pilgrims were planning to settle further south, but decided to remain further north because their beer supply was running low.
Disagreements over whether a study met the inclusion criteria were planned to settle through joint discussion among the members of the research team; although there were no discrepancies The search process that we followed is illustrated in Figure 1.
In an unusual move, a group of McCain fund-raisers is planning to help Mr. Giuliani raise money to settle about $2 million in campaign debts, Mr. McCain's advisers said.
