This article follows the journey of a young professional in their early 30s who moved to Pasadena. Starting from a studio near Caltech, they transitioned to a one-bedroom ahead of their wedding a year later, and are now looking for a two-bedroom as they plan for children. Here's a breakdown of the rental prices they encountered along the way.

The studio they rented at the beginning was 616 square feet and cost $2,435 per month. This was exactly in line with the average for studios in Pasadena according to RentCafe, and its location with good access to Old Town made it highly competitive among freelancers and young professionals.

A year later, they moved to a one-bedroom that was 750 square feet and cost $2,935. This was an increase of 134 square feet and $500 in rent. They recall that this area was popular among newlyweds and graduate students from Caltech and the Art Center, and listings would quickly disappear.

Currently, they are looking at a two-bedroom that is 1,108 square feet and costs $3,691. This represents an increase of $756 compared to the one-bedroom, appealing to newlyweds planning for children and roommate combinations. While there isn't precise average data for three-bedrooms, other sources estimate prices between $4,400 and $4,900 for around 1,400 square feet.

Pasadena continues to see new mid-rise buildings being constructed near Old Town and Caltech, with a particularly high proportion of studios and one-bedrooms. Three-bedrooms are mostly found in single-family rentals closer to South Pasadena, making it relatively challenging to find them within apartment complexes.

• Studio 616 sqft, $2,435
• One-bedroom 750 sqft, $2,935
• Two-bedroom 1,108 sqft, $3,691
• Three-bedroom approximately 1,400 sqft, estimated $4,400–$4,900

As seen in this professional's case, the trend of moving from a studio to a one-bedroom and then to a two-bedroom is commonly observed in Pasadena. Each additional room typically increases rent by about $500 to $800, making it easier to manage costs by upgrading units gradually rather than jumping straight to a three-bedroom.

For Korean families targeting Pasadena's excellent school district, it's often practical to stay within apartment complexes up to a two-bedroom, and then consider single-family rentals or nearby cities when a three-bedroom becomes necessary.

The overall average rent in Pasadena is $3,161, reflecting a 0.26 percent increase from the previous year. It's also worth noting the significant disparity between neighborhoods with high demand, like Old Town and Caltech, and relatively more affordable areas like East Pasadena, which is comparable to the differences seen across unit types.

Ultimately, as this professional's experience illustrates, a gradual approach to increasing the number of rooms in Pasadena is a realistic way to manage rental costs rather than making a sudden leap.

Considering the three-bedroom they are contemplating, Pasadena is a city where rents nearly double from studios to three-bedrooms. This reflects the clear premium associated with school districts and access to Old Town.

Among Korean parents, it's common to see families endure in a two-bedroom within Pasadena's excellent school district until their children enter middle school, at which point they often transition to a three-bedroom or a single-family home in a nearby city. This professional is likely to make a similar choice in the coming years.

Breaking down the demand for different unit types, studios cater to students and young singles, one-bedrooms are popular with newlyweds and graduate students, two-bedrooms are suited for families with one child and roommates, and three-bedrooms are typically for larger Korean families. Following a single case closely reveals how unit types align with life stages.