How to figure out the best time to buy a home, according to a mortgage analyst

According to Lewis, many people think they need to wait until they get married before buying a home. "I think being single is not a reason to hold off," he said. "When you buy a home sooner, you're building equity sooner."

The Washington Post reported in that 18% of the home purchases made in 2017 were made by single women. That figure includes older women who are widowed or divorced, as well as younger women ready to invest in real estate and put down roots.

In 2012-2017, the number of starter homes on the market reached its peak between October and December in 70 of the 100 largest US metros, according to a 2017 report by Trulia. This means that there are more options for those looking to buy their first homes in the fall.

But it may be worth waiting until winter to make an offer, as Trulia also reported a decline in the prices of starter homes between January and March 2017. Additionally, Lewis said that prices tend to be highest in June and July and take a tumble by January or February.

While the number of houses for sale goes down in the winter, the number of buyers declines even more, so you'll face less competition for the homes that are on the market, Lewis said. And sellers with homes on the market in the winter may be more likely to negotiate, according to a US News report.

Lewis said that this trend holds true even in the places that snowbirds flock to in the winter months. "There's even a difference in prices in places like Orlando and Phoenix," he said. "That really surprised me."

"Each city and even different neighborhoods might be different," Lewis added. "The best thing to do is ask an experienced local real estate agent."

Lewis said mortgage rates have remained low for the past 15 years, despite predicting that they would rise.

"I've been following mortgage rates now for 17 years and I can't tell you how many Januarys I've predicted, ‘This is the year when mortgage rates are going to rise substantially,' and every year it hasn't happened," Lewis said.

Lewis recommends resisting the pressure to either rush or delay buying a home based on mortgage rate predictions. "You have at least a 50% chance of being wrong," he said, so don't let this affect your timing of when you want to buy a home.

You might have more options for home financing than you realize. Some states, such as Pennsylvania and California, offer homebuyers help with financing, including down payment assistance. Even if your state doesn't offer any special programs, you might be eligible for an FHA loan, which may only require a down payment of 3.5%.

The VA offers home-buying programs to active-duty military, veterans, and some surviving spouses of servicemembers. "If you are a veteran or in the military, really look into VA loans," Lewis said. "They are a great deal."

There is also first-time homebuyers' assistance at the local level. San Francisco has a special program to help local teachers, and New York City's HomeFirst program provides up to $40,000 in down payment or closing cost assistance to homebuyers.

In expensive markets like these, assistance programs can make a big difference, Lewis said. Invest a bit of your time to research what support is available where you live.