The St. Louis First Apartment Checklist

What is actually in it

• The money due before you get a key. Application fee, administrative fee, deposit, first month, utility deposits, water activation, internet install, renters insurance. A fillable column so you end up with your own number instead of a guess.
• What the utilities cost to turn on. Deposit rules for Ameren Missouri, Spire, Ameren Illinois and both American Water companies, taken from the rate books those companies file with the state regulators.
• What it costs every month after that. The line most people only find out in January.
• Your deposit and how to get it back. Missouri and Illinois, each with its own rules and its own citation.
• The move-in walkthrough that decides the deposit argument twelve months before you have it.
• The questions to ask before you hand over an application fee, and the two things that should stop you cold.

Three things in here that most guides get wrong

The administrative fee is not the application fee. It is a separate charge, it is often the larger of the two, and it will not be in the rent number on the listing. One Metro East property publishes a $25 application fee and a $250 administrative fee on the same page.

Utility deposits are refundable, and they can be split. Ameren will let you pay a residential deposit in three installments if you start service between April and October, or five between November and March. Almost nobody knows to ask.

Illinois changed its deposit law and most guides never updated. The Security Deposit Return Act used to apply only to buildings with five or more units. That limit was removed effective January 1, 2024, which means it now reaches the small landlords who own most of the Metro East.

Why a REALTOR wrote a renting checklist

Because the questions are the same questions. Type “how much money do I need for my first apartment” into Google and the first thing it suggests is “how much money do I need to buy my first house.” That is Google’s own data. The person working out whether they can afford a first apartment is the same person who, somewhere between one and five years later, works out whether they can afford a first house. Nobody teaches either one.

So this is not a lead magnet with a house pitch stapled to the back. It is the renting version of the same arithmetic, and it is useful whether or not buying is ever on your list.

General education, not legal, financial, lending or insurance advice. Figures verified September 2026 and sourced inside the document. Laws, rates and fees change, and your own city may add rules the state does not.