The longer the lock period, the more the loan will cost you. Lenders do not know what the interest rates will be in the near future; they hedge the risk by offering higher rates or charging fees for longer lock periods.
Find the optimum combo
Look for the sweet spot when pricing out a rate lock. The sweet spot is the combination of interest rate, term and cost you need to achieve that optimum deal. Most lenders won't lock you for less than 30 days unless you're ready to close and often offer the same rate for a 15- and 45-day period. Ask about the rate for several lock periods: 15, 21, 30, 45 or 60 days. Anything longer than 60 days gets pricey, so it might be smarter to wait until you get nearer to the closing and check again.
Watch, then act
If you feel that you have to keep your finger on the pulse of the market, Terry Connelly, an economic expert and dean emeritus at Golden Gate University in San Francisco, advises you to monitor one factor: "Watch the 10-year bond prices. As they move up, interest rates move down."
The key is to get your rate on a down day and lock for a term long enough to close the loan.
How it works
Grab it while you can. Here's an example: Brian Rubin was visiting Hershey Park with his family when he received an email from me, his mortgage loan officer. The Rubins were buying a four-bedroom, 2,200-square-foot home in Westchester County, New York, and the rates had just dropped. Rubin could lock in at 4.375 percent for 45 days and needed to give the OK. He did via email while strolling with his family. "I was happy with the rate and could now concentrate on other things that were keeping me up like packing, moving and school starting," he says.
If you cannot close by the end of the lock period, most lenders will extend the rate or allow you to relock, but be sure to know how your lender treats it. Learn the process and the costs.
Compare a lineup of interest rates
Inquire about a lineup of mortgage rates instead of zeroing in on just one. Lenders refer to the array of interest rates as buckets, and often there is disparity among rates depending on a bank's investors.
"Think of the lender buying buckets of money at a certain interest rate and then reselling the money to the consumer," says Lou Maldonado, an account executive at Plaza Home Mortgage's New York office. Lenders are able to obtain better pricing on certain rates and should pass it on to the consumer. Ask about a series of interest rates; what will it cost to get a 3.9, 4, 4.25 or 4.375 percent rate locked in for the same period?
Factor different levels of points
Paying discount points (one point equals 1 percent of the loan amount) might be worth it if you can get a lower rate. Divide the monthly savings into the cost to find how many months you need to recoup the expense. Compare the interest rates quoted at different prices, and you might be surprised that higher discount points, combined with a lower rate, could cost less overall.
Pick a rate that you can be happy with, and when it hits, lock the rate. The key is to be happy with the rate you were able to get and not look back.
Jennifer Lerner from Wilmington, Delaware, a second-time homebuyer, was waiting to lock one day. At the time, the rate was 4.25 percent, but her lender thought it could drop a little lower.
Is it really worth waiting for the possible drop? Jennifer waited a few days and then locked at a slightly higher rate: "We locked in at 4.375 and we are not looking back!" she says.