If you plan to finance your San Francisco home with a conforming interest only mortgage, get your loan application submitted no later than this Friday, June 18. 

Starting next week, Fannie Mae is clamping down on the popular loan product.

An “interest only” mortgage is exactly what its name implies — a mortgage for which the monthly payments consist entirely of interest with no principal reduction. Because there’s no amortization, payments are less costly on a month-to-month basis.

For example, assuming principal + interest payments at 5 percent, a $250,000 mortgage carries a monthly payment of $1,342.  The payment on a comparable interest only mortgage, however, drops to $1,042.

That’s a payment difference of $300 and the size of the cost savings, not surprisingly, is the biggest reason why Fannie Mae is making its changes.

In its official announcement, Fannie Mae says it wants the give the interest only option to “borrowers who are in a position to choose it as a financial management tool” rather than allowing homeowners use it as an affordability tool for their budgets.

Going forward, there are new minimum standards for interest only home loans.

• Applicants must have a 720 credit score or better
• Applicants must have at least 24 months of reserves
• The property type may not be a 2-unit, 3-unit or 4-unit
• The property must be a primary residence, or vacation home

Furthermore, only purchase and rate-and-term refinances are eligible.  Cash out refinances are prohibited.

Interest only home loans aren’t for everyone, but if you plan to finance with a Fannie Mae mortgage and interest only is your preference, get your loan application submitted as soon as possible. Starting Monday, approvals will be tougher to come by.

A new loan quality initiative from Fannie Mae is making it harder for home buyers and refinancing homeowners everywhere to close on a mortgage.

Beginning June 1, 2010, with all new applications, Fannie Mae wants lenders to verify that borrowers have not taken on new debt during the underwriting phase of the mortgage.

If new debts are found, the mortgage is subject to a re-underwrite and a possible turndown.

For Fannie Mae, the goal is to reduce the number of loans that go bad because of new, non-disclosed debt. Lenders have the freedom to verify in whatever manner they wish, but in most cases, the verification process will amount to a credit re-pull made just prior to closing.

The underwriters will be looking for 3 things in particular — even after your loan is approved.

First, your updated credit report will show your current credit card bills and minimum monthly payments.  Those numbers will replace your original numbers made at the time of application.  If the debts exceed a certain threshold, your loan will be denied.

Second, underwriters will be looking at your updated credit score. If your FICO has dropped below minimum lending standards, your loan will be denied. Or, you may be subject to a new loan-level pricing adjustment.

Loan level pricing adjustments are mandatory loan fee based on your credit score.

And, lastly, underwriters will be looking at your credit report’s Credit Inquiry section. The goal is to see if you’ve been applying for credit elsewhere. Underwriters can use this information at their discretion.

Fannie Mae’s Loan Quality Initiative is just one more way that the government-backed group is trying to improve its loan pools. Unfortunately, it’ll mean more turndowns for mortgage applicants.

Therefore, take extra care of your credit between the time of application and the time of closing. Don’t buy new cars, don’t buy new appliances, and — most definitely — don’t open new credit cards.  Be extra safe with your credit because a mortgage application that’s supposedly cleared-to-close can be revoked at the eleventh hour.

When in doubt, talk to your loan officer about what may or may not trigger the Loan Quality Initiative.  Your loan approval is at stake.

Because of strife in Greece, Spain and North Korea, conforming mortgage rates are back to all-time lows. They’re at levels not seen in 50 years.  For homeowners that missed the Refi Boom of November 2009, it’s a second chance.

In this well-presented, 3-minute video from NBC’s The Today Show, you’ll get tips getting low rates and choosing the best time to lock in.

Some of the topics covered include:

• Why were the experts wrong about rates moving higher this summer?
• How much money can you save with a 1 point drop in your interest rate?
• Should you buy a bigger home now that rates have fallen?

The advice in the piece is matter-of-fact and centered.  There is no cheerleading and the message is honest. Mortgage rates are low and they likely won’t stay that way.  If you’ve been thinking about a refinance, talk to your loan officer as soon as possible.

With home prices still relatively low and mortgage rates trolling near their all-time best levels, it’s no surprise that home affordability is extraordinarily high in most U.S. markets.

According to the quarterly Home Opportunity Index as published by the National Association of Home Builders, more than 72 percent of all new and existing homes sold between January-March 2010 were affordable to families earning the national median income.

It’s the second highest reading in the survey’s history.

Of course, on a city-by-city basis, home affordability varies.

In the first quarter of 2010, for example, 98.7% of homes sold in Bay City, Michigan were affordable for families earning the area’s median income and in Indianapolis, the percentage was almost 95 percent.

Indianapolis has held the top quarterly ranking for close to 5 years now.

On the opposite end of the spectrum, the New York-White Plains, NY-Wayne, NJ region earned the “least affordable” metropolitan area for the 8th consecutive quarter.  Just 20.9% of homes are affordable to families earning the local median income.

The rankings for all 225 metro areas are available on the NAHB website but regardless of where your town ranks, home affordability remains high as compared to historical values but it likely won’t last long.  Home values are recovering in many markets and mortgage rates won’t stay this low forever.

All things equal, buying a home may never come this cheap again. If you were planning to buy later this year, consider moving up your timeframe.

After starting the day in the red, mortgage rates rebounded Wednesday afternoon after the Federal Reserve released its April 27-28, 2010 meeting minutes.

It’s good news for home buyers and would-be refinancers.  Mortgage rates continue to troll along multi-year lows.

“Fed Minutes” are lengthy, detailed recaps of Federal Open Market Committee meetings, not unlike the minutes you’d see after a corporate conference, or condo association gathering. The Federal Reserve publishes Fed Minutes 3 weeks after each respective FOMC get-together.

The Fed meets 8 times annually.

Because of the minutes’ content and density, it’s of tremendous value to Wall Street and investors.  Fed Minutes provide a glimpse into the conversations and debates that shape the country’s monetary policy.

The broad scope of the published meeting minutes are in sharp contrast to the more well-known, post-meeting press release which reads more like a policy summary.

And the extra words matter.

Here’s some of what the Fed discussed last month:

• On Greece : A crisis in Greece could slow U.S. domestic growth
• On housing : Despite government support, growth appears to have stalled
• On its mortgage buyback program : There’s little reason to sell mortgage bonds right now

When the markets saw the Fed Minutes, what had been a down day for bond markets turned positive. The less-than-sunny outlook for the near-term U.S. economy sparked bond sales, pushing prices higher.

Mortgage rates move opposite mortgage bond prices.

Wall Street is always in search of clues from inside the Fed about what’s next for the economy and post-FOMC minutes usually give good fodder.  April’s meeting was no different.

For now, mortgage rates remain near all-time lows but once the Eurozone issues are settled, rates are likely to rise. If you haven’t locked a mortgage rate, your window may be closing.  Once the economy is turning around for certain, mortgage bonds will be among the first of the casualties.

As expected, Existing Home Sales fell in February, slipping 30,000 units versus January’s numbers. It’s the 4th straight month in which Existing Home Sales were lower, month-over-month.

An “existing” home is one that is previously owned and lived-in (i.e. not new construction).

Existing Home Sales peaked in November 2009, just as the First-Time Home Buyer Tax Credit was set to expire. Immediately thereafter, according to the National Association of Realtors®, monthly sales plunged 17 percent in December, then another 7 percent in January.

Comparatively, February’s dip is a modest 0.6 percent and is more in line with the pre-tax-credit Existing Home Sales trend.  The real estate market is rediscovering its normal.

But “normal” may not last for long.

When the federal home buyer’s tax program was extended last year, the new rules stated that home buyers must be under contract for their new, respective homes on, or before, April 30, 2010 in order to claim up to $8,000 in federal money.  That deadline is approaching and many markets are experiencing a surge in buyer traffic as April 30 nears.

The Existing Home Sales data doesn’t reflect this new demand, nor the number of new contracts written. It only accounts for home closings and, in February, closings were down.

For today’s buyers, the market looks favorable. The federal tax credit is in place, mortgage rates stubbornly stick near all-time lows, and home prices are staying in check.

Existing Home Sales should gain through March and April, pressuring home prices higher. And, by the time the press reports the gains, the best deals in the city may already be gone.  Consider acting sooner rather than later.

Homes are more affordable across the nation as the housing market emerges from a slow winter season with mortgage rates still near 5 percent.

Soft housing and low rates are an excellent combination for home buyers but whereas home values rise with a gradual pace, mortgage rates change in an instant.  It’s something worth watching.

Each 0.25% increase to conventional or FHA rates adds approximately $16 per month for each $100,000 borrowed. Mortgage rate volatility can change your household budget.

If you’re trying to gauge whether rates will be rising or falling, one keyword for which to listen is “inflation”. Mortgage rates are highly responsive to inflation.

By definition, inflation is when a currency loses its value; when what used to cost $2.00 now costs $2.15. As consumers, we perceive inflation as goods becoming more expensive.  However, it’s not that goods are more expensive, per se. It’s that the dollars used to buy them are worth less.

This is a big deal to mortgage rates because mortgage bonds are denominated, bought, and sold in U.S. dollars.  As the dollar loses value to inflation, therefore, so does the value of every mortgage bond in existence. When bonds lose their value, investors don’t want them and bond prices fall.  Mortgage rates move opposite of bond prices.

Prices down, rates up.

In today’s market, the relationship between inflation and mortgage rates is helping home buyers. The Cost of Living made its smallest annual gain in 6 years last month and the Fed has repeatedly said that inflation will stay low for some time. The combination is driving investors to buy mortgage bonds which, in turn, is suppresses rates.

So long as it lasts, the cost of homeownership will remain relatively low. Combined with the expiring tax credit, the timing to buy a home may be as good as it gets.

If your mortgage is set to adjust this year, the smart move may be to let it. Today’s conforming mortgages are adjusting lower than ever before — as low as 3 percent.  It may not be what you expected when you signed for your ARM several years ago.

The reason why ARMs are adjusting lower is because of how they’re made.

When conforming adjustable-rate mortgages adjust, they adjust according to a pre-determined formula. The formula is the sum of a constant and a variable.  The constant is usually 2.25 percent and the variable is a daily-changing interest rate called LIBOR.

The formula looks like this:

New Mortgage Rate = LIBOR + 2.250 percent

LIBOR is an acronym for London Interbank Offered Rate.  It’s an interest rate at which banks borrow money from each other. In Fall 2008, when Lehman Brothers fell and sparked a global banking fear, LIBOR spiked as the risk of inter-bank borrowing jumped.

Since then, however, LIBOR is down.

Normalcy is returning to banking and the timing couldn’t be better for homeowners with ARMs. 15 months ago, a homeowner’s ARM may have adjusted to 6 1/2 percent.  Today, that same ARM falls to just above 3.

As a strategy play, it might make sense to let your ARM adjust. Or, because fixed rates are still near 5 percent, converting that ARM to a long-term fixed-rate product might make sense, too.  The decision is a balance between how low do you want your payment, and how long might you live in your home.

The longer you stay, the more it might make sense to switch to fixed-rate, even though ARM rates are so low.

If you’ve got an adjusting ARM, talk to your loan officer about your choices. Once March ends and the Fed withdraws its mortgage market support, mortgage rates may rise and the fixed-rate option may be gone.