This article examines the forecast for new apartment supply in the St. Louis metro area for 2026. According to the 2026 St. Louis outlook from MMG Real Estate Advisors, the amount of new completions this year is about 60 percent lower than the five-year average. The number of units under construction is also 32 percent lower than the ten-year average. It is projected to be the quietest year for new construction in the last decade.

Despite the declining supply trend, the rental gap between new and existing properties currently on the market has already widened significantly. According to RentCafe, the average rent for the entire St. Louis area in 2026 is $1,439. In contrast, the average rent for newly constructed apartments is $2,173, which is $734 higher than the overall average and more than 50 percent higher. This gap is much larger than the commonly known new construction premium of 10 to 20 percent.

Understanding the reasons behind this gap is straightforward. New units often feature the latest insulation and smart home technologies, resulting in lower electricity and heating/cooling costs compared to existing properties. They also come with construction warranties. The climate in central Missouri, with its recurring summer humidity and winter freezing, tends to accelerate the aging of plumbing and roofs. Buildings over 20 years old may be approaching the point of needing major repairs.

For families looking to rent in St. Louis with a budget around $2,000, the trend becomes clearer. In new developments, this budget often limits them to one-bedroom units, while in existing buildings, it is common to find two-bedroom units within the same budget. However, when considering existing properties, it is essential to inquire about recently replaced fixtures and the history of roof and plumbing inspections before signing a lease.

If purchasing is also being considered, mortgage rates should be taken into account. It is advisable to refer to the trends in 30-year fixed mortgage rates published by Freddie Mac and to calculate the increased loan principal when buying new versus the expected repair costs after purchasing an existing property.

According to comparison data compiled by NAR and Angi, it is worth noting that new constructions typically have minimal repair cost burdens during the warranty period, but this difference diminishes significantly once the warranty expires.

On the other hand, existing properties have clear advantages. They often offer more spacious layouts, mature landscaping, and established neighborhood atmospheres that are not easily found in new developments. The local infrastructure, including schools, public transportation, and grocery stores, is already well-established. Many of the neighborhoods preferred by Korean families are older residential areas that possess these advantages. While school ratings can be checked through resources like GreatSchools or Niche, it is important to verify the assigned school for a specific address before signing a lease, as boundaries can change frequently.

For investors looking at rental income, it is important to interpret the new construction premium differently. While high rents may indicate a faster return on initial investment, it is also necessary to consider that the vacancy rates for existing properties may decrease as supply diminishes. However, market prices can change at any time, making it difficult to assert that they will always rise.

Additionally, it is important to consider insurance costs. Missouri is known for frequent hail and storm damage, and home insurance premiums can vary significantly based on the condition of the roof and the year of construction. New constructions often meet the latest material and construction standards, resulting in relatively lower insurance premiums, while existing properties may have different insurance requirements based on whether the roof has been replaced. When comparing properties, it is essential to consider not only the rent or sale price but also the insurance costs to accurately assess the actual monthly burden.

Families relocating to St. Louis from other states should be aware that property tax and insurance calculation methods may differ from those in their previous state. Since tax rates vary by county in Missouri, it is necessary to verify the actual burden individually.

For those who have just arrived from Korea and are choosing their first settlement location, it may be helpful to first determine whether the low management fee structure of new developments or the verified living infrastructure of existing neighborhoods better suits their current lifestyle.

Investment and legal-related content is not advice, and it is recommended to consult with real estate, tax, and, if necessary, immigration professionals before making any contracts.