Two months before the lease expires, the landlord sends a renewal notice. The new rent is $80 higher than before. At this moment, many tenants start calculating for the first time. They wonder if it would be better to pay a mortgage instead. For tenants living in St. Louis, this question feels particularly relevant.

According to Redfin, the median home price in St. Louis is $255,000 based on the last three months. This is a 6.2% increase from a year ago. The average rent as of August 2026, according to Zumper, is $1,295. RentCafe reports it as $1,439, which is a 2.37% increase from a year ago. This means home prices have risen by about 6%, while rent has increased by around 2%. In terms of speed, home prices are rising more steeply.

A way to see the relationship between these two is through the price-to-rent ratio. This is the home price divided by the annual rent. In St. Louis, dividing the $255,000 home price by the annual rent of $15,540 gives a ratio of 16.4. Typically, a value below 15 indicates that buying is more favorable, while a value above 20 suggests renting is better. A ratio in the 16 range indicates a balance, meaning it doesn't strongly favor either side.

When looking at St. Louis by city and county, the situation changes. According to Redfin, the median home price in St. Louis City is $250,000, while in St. Louis County, it is $312,000, indicating that the county is significantly higher. This means that even within the same metro area, the calculation can vary depending on the neighborhood. This article uses the overall average of $255,000, but when looking at actual listings, it's advisable to check the individual market prices of the areas of interest.

However, a single number does not provide a definitive conclusion. Just comparing monthly expenses can lead to different answers. The rent of $1,295 and the payment for a $255,000 home purchased with a 20% down payment, leaving a remaining mortgage of $204,000, will differ. Assuming a 7% interest rate, the principal and interest payment would be around $1,360 per month, and when adding property taxes and insurance, it can often exceed $1,600. Compared to the rent of $1,295, this results in a difference of over $300 per month, but a significant portion of this difference contributes to building equity, which ultimately becomes part of your assets.

Whether you have the down payment ready becomes a crucial factor. A 20% down payment would require around $50,000 based on St. Louis standards. If you don't have this amount yet, there is no rush to buy. It may be safer to continue renting while saving more funds. Conversely, if you already have the down payment ready and plan to stay in the area for more than five years, the situation changes. Since part of the mortgage payment goes toward principal repayment, over time, it becomes more advantageous in terms of net worth compared to renting.

If your stay is short or there is a possibility of moving in the future, you should also consider the closing costs associated with buying and the agent fees when selling. If there is a chance of moving again within 2-3 years, renting appears to be the safer choice. On the other hand, if you are certain about staying in one place for a long time due to school issues for your children, then at the current ratio of 16, buying could be a viable option.

In cities like St. Louis, where the price-to-rent ratio is in the middle range, it helps to check whether the increase during each rent renewal is similar to the market average. RentCafe reports an annual increase rate of 2.37%, so if this renewal shows a significantly larger increase, there may be room for negotiation with the landlord. Conversely, if the increase is at the average level, it might be a good opportunity to assess how much down payment money has been saved and reconsider the buying calculations.

St. Louis has significant differences in property tax rates by county within Missouri. If you are considering buying, be sure to check the property tax rates and school district assignments for the areas of interest. School district information can be referenced on sites like GreatSchools or Niche, but since assignment boundaries change frequently, it is necessary to verify based on actual addresses. This article is not investment or legal advice, and it is recommended to consult with a real estate professional and accountant before making any actual contracts.