There are often people who think that the net profit is simply the rent minus the loan principal and interest. One family looking to purchase their first rental property in Philadelphia calculated this way, but after adding property taxes, insurance, and management fees, they found their expected cash flow was significantly different. Cash flow calculations should not just subtract the loan principal and interest from the rent; they must also account for taxes, insurance, management fees, and vacancies to get closer to the actual numbers.

The difference becomes even more pronounced when comparing Philadelphia with the nearby suburbs of Montgomery County. The average rent in Philadelphia is $1,600, which is 17 percent lower than the national average (Zillow, as of August 2026). A one-bedroom averages $1,490, while a two-bedroom is around $1,760. In contrast, the average rent in nearby Montgomery County is $1,969, which is higher than in the city, so it's important to compare purchase prices and rents to see the true return on investment.

Property taxes also differ between the two areas. The real estate tax rate in Philadelphia is 1.3998 percent, divided into the city portion of 0.6159 percent and the school district portion of 0.7839 percent. For a $200,000 home, the annual tax would be about $2,800. Montgomery County has a rate of 1.35 percent, which is not significantly different, but the way school district and local government rates are combined varies slightly, so it's advisable to check the specific address before purchasing.

Philadelphia, like the rest of Pennsylvania, does not have rent control. However, tenant protections at the city level are quite robust. There is a Good Cause Eviction ordinance that prevents landlords from refusing to renew leases without just cause, and starting November 1, under the Safe Healthy Homes Act signed in May 2026, landlords will not be able to file eviction lawsuits without a rental suitability certificate. While rent itself can be adjusted freely, the procedures are becoming more stringent than before.

Let's also look at loan conditions. Investment loans require a down payment of 15 to 25 percent, which is higher than for owner-occupied homes, and a credit score of at least 620 is needed for approval, but a score above 740 is necessary to secure favorable interest rates. Lenders will only recognize 75 percent of the expected rental income as qualifying income, so be sure to factor this in when making your initial calculations.

In Philadelphia, there is significant variation in school district quality, so even for investment purposes, it's wise to check the school district ratings. Refer to ratings from GreatSchools or Niche, but keep in mind that school district boundaries change frequently, so verify the assigned school for the specific address before purchasing. In contrast, the suburbs of Montgomery County generally have consistently good school ratings, making them a popular area for Korean families seeking rental properties.

If you are moving to Philadelphia from another state, I recommend comparing property taxes, school districts, and rents between the city and the suburbs side by side. The city has lower rents but greater variability in school quality, while the suburbs have higher rents and property taxes but more stable school districts. Ultimately, which option is better depends on your budget and priorities.

It's also a good idea to consider home inspections. Cities like Philadelphia, which have many older homes, may have outdated plumbing or electrical systems, so carefully reviewing inspection reports before purchasing can help reduce significant repair costs later. It's advisable to factor in these initial repair costs when calculating cash flow as well.

During the operational phase, it's wise to budget for management fees of 8 to 12 percent of the monthly rent and maintenance costs of about 1 percent of the property value annually. At the time of sale, you can defer capital gains taxes through a 1031 exchange. It's best to plan for cash flow conservatively and generously from the start, which will provide peace of mind. This article does not constitute investment or legal advice, and it is recommended to consult with a professional before finalizing any contracts.