When I got my first apartment after college, I needed my mom to co-sign my lease.

The landlord required proof that I made three times the rent, but since I wasn’t making nearly enough, I called Mom to sign on that second dotted line.

Then, in my mid-20s, when I bought my first condo, I needed a co-signer again. Once again, my mom was there for me.

Now I’m almost 30, married, and expecting our first child. Both my husband and I are gainfully employed and have good credit histories, so you’d think we wouldn’t need any parent co-signing for us to rent a home! But alas, we’d recently moved to New York City, where rents were so high, snagging a half-way decent apartment would require Mom to co-sign once again.

What’s going on? Would I need my mother to co-sign forever?

Of course, I feel lucky to have a parent who’s so supportive. But I can’t help but think that there’s something wrong with me, where I was choosing to live, or perhaps the housing system in general.

So, I started looking into why co-signing is so often required, even in cases where it seems unnecessary. Here’s what I learned, and some words of wisdom from experts that could help you get through the inconvenient (and embarrassing) cycle.

Why co-signers are required

What bothered me most about needing a co-signer was that I felt like I wasn’t being taken seriously as a tenant. I had a good job and a college degree, why couldn’t I be trusted to pay my rent?

As it turns out, many people face this problem.

While landlords may have differing requirements, the industry standard is that your take-home income must be three times what you pay in rent. So if you make $3,000 a month, your monthly rent should not exceed $1,000.

But is this realistic with today’s runaway rent prices?

For instance, in 2013, as a fresh college graduate, I paid $1,600 a month for a one-bedroom, third-floor walk-up in Los Angeles. So based on the three-times rule, I should have been earning $4,800 a month, or $57,600 a year.

A salary that size was an unattainable dream for me right out of college. Even though I had a great sales job and a minimum-wage side hustle, I was making only about twice the annual rent, or $40,000.

And I was one of the lucky ones. The minimum wage in California is $12 an hour, but in 2013 it was $8. To afford a monthly rent of $1,600 in 2013, a minimum-wage worker would have needed to put in 150 hours a week.

Is the three-times rent rule realistic?

Because I needed a co-signer, I couldn’t help but wonder about the three-times rent rule, and the reason for it. Did this mean I’d overextended myself?

As it turns out, I had no reason for worry. With a monthly rent of $1,600, I had another $1,600 left for other expenses, and it was more than enough.

So I started wondering: If twice my income worked just fine for my bills, why do landlords want proof that renters make three times their rent?

“The exact origins of the three-times rule is unknown,” says Michael Dinich of Your Money Geek. Nonetheless, this rule has remained the industry standard—for renters and home buyers alike.

“Mortgage lenders have often used the guideline that housing costs should be no more than 30% of income,” Dinich says. “The three-times rule is likely a handy approximation based on those old guidelines.”

This guideline may even contribute to younger generations’ low rates of homeownership.

“The income of many people, particularly younger adults, has not kept up with home prices in many areas,” says Andrew Latham, managing editor of SuperMoney. “This is why millennials have lower homeownership rates than previous generations.”

Plus, experts say that most landlords (even the nice ones) don’t necessarily care if people aren’t making as much money as they used to. They care more about finding a renter who will be able to pay their rent on time. And if that means sticking to the tried-and-true method of renting to those who can prove they have plenty of income to spare, or can at least get a co-signer, they’ll do it.

How I pay my rent without a co-signer today

While it’s tough for young renters and home buyers almost everywhere to cover their housing costs, it’s even worse in New York City.

Sure, my mom agreed to co-sign the lease, as always. Yet with a baby on the way, my husband and I decided that, rather than taking my mom up on her kind offer, I’d try to find an apartment with a rent that fell comfortably within the three-times rule.

We started crossing things off our wish list. We moved our search from Manhattan to Brooklyn. We stopped looking at homes near subway stations and cute cafes and started touring apartments that were a bit farther out. In the end, we found a studio we liked, and the low rent didn’t require a co-signer.

For more smart financial news and advice, head over to MarketWatch.

By Jillian Pretzel who is a Southern California writer who covers lifestyle, relationships, home, and money management.

We are ready to help you find the best possible mortgage solution for your situation. Contact Sheila Siegel at Synergy Financial Group today.