It's one of the hottest markets in the US right now with so much population growth, job growth, and companies moving/developing here (26B Intel headquarters being built here, 68K+ enrollment in Ohio State University, Amazon, FB, Google, Honda, Nationwide, Anduril, etc.).

They are not good on equity growth side of things.  

Population growth creates increased demand for housing, pushing rents higher.Rapid and Sustained Appreciation: In cities with abundant, low-cost land, new construction is often preferred over existing properties, limiting appreciation potential.

All the suggestions above are great and I'm sharing my personal opinion.  

@Allen Zhu -Reading, along with many other eastern Pennsylvania markets are seeing significant growth compared to other areas in the state/ country.

This is because RE prices reflect a lot of parameters including anticipated rent growth. 

A city with a metro population greater than 1 million that shows significant and sustained population growth.

Metro, the rising median household income and population growth in the D.C.

*This is a VERY simplified example, you'll want to use amortization tables and more to be precise.For maximum portfolio growth, you might consider buying a new primary every 12 months.

If they aren't sending you personalized investment deals that meet your buying criteria, they are NOT a good agent!