Let's take the case of a family that moved to Arlington Heights last month. This family, who just arrived from Korea, initially looked for a 2-bedroom unit but eventually changed their contract to a 3-bedroom as their children progressed in school. The confirmed rental prices and square footage for different units illustrate the characteristics of the Arlington Heights market.

Studios are reported to rent for around $1,500 per month, averaging 520 square feet. These units are primarily sought after by single individuals commuting to downtown Chicago, and there is a concentration of them near the Metra station.

1-bedroom units average around $1,800 per month and about 780 square feet. They are $300 more expensive than studios, but due to the area's good school districts, many newlyweds choose them as their first home.

2-bedroom units are around $2,250 per month, averaging 1,080 square feet. This was the range the family initially considered, and it has been confirmed that while it is sufficient for one child, it becomes tight for two or more children.

3-bedroom units are reported to rent for around $2,800 per month, averaging 1,350 square feet. Most families moving to Arlington Heights for the school district ultimately choose these units, especially those with two or more children or those accommodating parents.

In terms of supply, there are the most 1-bedroom and 2-bedroom units available, and recent developments are primarily composed of these two types. The proportion of 3-bedroom units in new constructions is relatively low, so families moving for the school district should plan their contract timing accordingly.

Here's a summary of the rent by unit type:

• Studio: $1,500 per month, about 520 square feet
• 1-bedroom: $1,800 per month, about 780 square feet
• 2-bedroom: $2,250 per month, about 1,080 square feet
• 3-bedroom: $2,800 per month, about 1,350 square feet

The difference between studios and 1-bedrooms is $300, between 1-bedrooms and 2-bedrooms is $450, and between 2-bedrooms and 3-bedrooms is $550, indicating that as the number of rooms increases, the gap widens. This can be interpreted to mean that in areas like Arlington Heights, where there is a clear demand for school districts, there is a greater premium on larger units.

For Korean families, starting with a 2-bedroom unit is manageable when children are in early elementary school, but if they are approaching middle school, it is advisable to look for a 3-bedroom unit from the start to avoid moving twice. School district assignments vary by complex, so be sure to check the school assignments directly before signing a lease.