What a difference two months (and 1.11%) makes: Higher rates mean this Brisbane condo would now pencil out to $254 more a month (Kiesha Stephens/Redfin)

Mortgage interest rates are on a tear. Last week they registered their sharpest one-week spike in years, hitting 4.46% for a fixed-rate 30-year home loan, according to Freddie Mac. Less than two months earlier, the rate was 3.35%.

Today’s Chronicle looks at the impact on the housing market; click here for the story.

Is a percentage more really that big a deal? Well, just ask all the folks who refinanced to carve that 1% off their mortgage rate.

Those who have not yet refinanced, perhaps because they were either underwater or close to it (lacking that magic 20% equity) are getting worried they may be out of luck. It’s a balancing act to see what will happen faster: Higher home values to increase their equity or higher mortgage rates that will make a refi less attractive.

Some home buyers, as well as those refinancing, may see the rising rates as motivation to get in the game.

“The rate increase spurred a lot of people to pull the trigger,” said Jay Voorhees, owner/broker of JVM Lending in Walnut Creek. “We’ve had an uptick in volume recently with both purchases and refinances.”

In his blog, mortgage broker Julian Hebron of RPM Mortgage in San Francisco discusses the possibility that rates could hit 5% in the near future.

While many experts say the housing market as a whole is likely to shrug off the higher rates, for some individual buyers, especially those on a shoestring budget, the impact will be stronger.

Consider these two homes now on the market, a condo very close to the Bay Area median, and a more high end home. Assuming a standard 20% down payment, look at what the monthly mortgage payments would be under today’s rate, and what it would have been in early May with the 3.35% rate.

This Brisbane two-bedroom condo “steps from the great outdoors,” (at top) is listed at $499,000. At today’s rate of 4.6%, monthly mortgage payments would be $2,017.  Monthly payments at 3.35% would be $1,763, or $254 less.

This San Jose 5-bedroom with an “inviting floor plan” and “lush backyard” in the Cambrian neighborhood (below)  lists at $889,000. The monthly cost at 4.6%: $3,587.  At 3.35%: 3,135. The difference: $452 a month. (Caveat: In reality this jumbo mortgage might mean a higher rate, but the spread between two months ago and now would be consistent.)

Carolyn Said is a San Francisco Chronicle staff writer. For Bay Area real estate news and insights, follow  her on Twitter: @csaid

This 5-bedroom in San Jose’s Cambrian neighborhood lists for $889,000. (Ashley Rabello/Redfin)

Article source: http://blog.sfgate.com/ontheblock/2013/06/30/mortgage-interest-rates-on-upswing-heres-the-pocketbook-impact/