St. Charles County Multifamily Buyer
Sell Your Commercial Property In St. Charles County, MO
St. Charles County sits northwest of St. Louis across the Missouri River and includes St. Charles, O’Fallon, St. Peters, and Wentzville. Its rental market is largely suburban garden and townhome-style communities serving commuters and families.
- Clear feedback on your deal, typically within 48 hours
- 5 to 100+ units, stabilized or distressed, listed or off-market
- Owners, agents, and brokers welcome — every conversation is confidential
We buy:Tired landlordsEstate & trust sales1031 exchangesDeferred maintenanceHigh vacancyPartnership splits
Cities We Cover: O’Fallon · St. Charles · St. Peters · Wentzville — County seat: St. Charles
St. Charles County
Where We Buy In St. Charles County
We evaluate apartment buildings of 5+ units across St. Charles County — in each city below, plus smaller towns and unincorporated areas countywide.
Local Market Data
St. Charles County Apartment Market
Figures gathered October 2026 from public market data.
Anyone planning to sell commercial property in St. Charles County, MO should start with the renter base. St. Charles County counted 31,413 renter households in the Census Bureau's 2020-2024 American Community Survey, 19.5% of the 161,311 occupied homes, well below the 31.9% renter share across Missouri. O'Fallon, St. Charles, St. Peters and Wentzville together hold 24,470 of those renter households, about 77.9% of the county total.
Median gross rent in St. Charles County reached $1,370, up 31.6% from the 2015-2019 survey. Rental vacancy stands at 6.2%, and 11.2% of housing units sit in buildings of five or more units. HUD's FY2027 two-bedroom Fair Market Rent for the St. Louis metro area is $1,349, just under the county median. Rents and vacancy shift from city to city across St. Charles County.
A county of 414,535 residents
St. Charles County grew 5.1% to 414,535 residents between the 2015-2019 and 2020-2024 ACS, adding 20,245 people.Rent up 31.6% in five years
Median gross rent in St. Charles County rose from $1,041 to $1,370 between the two ACS survey periods, outpacing the state's rent growth.Wentzville's fast-growing renter base
Wentzville's renter households grew 28.5% and its 5+ unit stock grew 61.0%, the fastest pace among the county's covered cities.Who rents in St. Charles County
Renters make up 19.5% of St. Charles County households, well under the 31.9% Missouri share, per the Census Bureau's 2020-2024 American Community Survey. Owners hold the other 129,898 occupied homes in St. Charles County. St. Charles city carries the highest renter share among the covered cities at 32.0%, with 9,728 renter households. O'Fallon's 6,734 renter households are a smaller slice of a bigger city, just 19.0% of its 35,471 occupied homes.
St. Peters counts 5,156 renter households, 21.0% of its occupied homes, and Wentzville counts 2,852, or 17.5%. Wentzville's renter base grew 28.5% between the two survey periods, the fastest pace of the four cities. St. Charles County's apartment stock is concentrated in St. Charles city, where 20.0% of units sit in buildings of five or more units, nearly double the countywide 11.2% share.
Rents, growth and affordability
St. Charles County's median gross rent climbed 31.6%, from $1,041 to $1,370, between the 2015-2019 and 2020-2024 surveys. Household income grew 23.2% over the same span, to $104,692, so rent gains outpaced income in St. Charles County. Renter households rose 10.6%, adding 3,004 households, while units in 5+ unit buildings grew just 11.5%.
Rent burden is real in St. Charles County: 42.4% of renters paid 30% or more of income on gross rent in the 2020-2024 survey. HUD's FY2027 two-bedroom Fair Market Rent for the St. Louis metro area is $1,349, about $21 below the county's median gross rent, unusual among Missouri counties. Rental vacancy in St. Charles County held at 6.2%, a tighter market than many of its covered cities.
City-by-city comparison
Rents across St. Charles County's four largest cities range from $1,251 in St. Charles city to $1,443 in O'Fallon. Vacancy swings far more widely, from 1.5% in O'Fallon to 9.1% in St. Peters. St. Charles city pairs the lowest rent with the highest renter share and the densest apartment stock of the group.
| City | Median gross rent | Renter share | Share of units in 5+ buildings | Rental vacancy |
|---|---|---|---|---|
| O'Fallon | $1,443 | 19.0% | 10.2% | 1.5% |
| St. Charles | $1,251 | 32.0% | 20.0% | 6.8% |
| St. Peters | $1,321 | 21.0% | 12.2% | 9.1% |
| Wentzville | $1,345 | 17.5% | 8.0% | 4.1% |
O'Fallon's 1.5% vacancy rate signals a tight rental market with little room for new tenants, while St. Peters' 9.1% gives buyers more lease-up risk to underwrite. Wentzville posted the fastest rent growth of the four cities at 33.3%, just ahead of St. Peters' 33.4%. St. Charles city's lower median rent reflects its older housing stock, with a median year built of 1986 against 2008 in Wentzville.
Property taxes and assessment in St. Charles County
Missouri assesses residential property at 19% of market value and commercial property, including apartment buildings, at 32%, under RSMo 137.016. St. Charles County real property is reassessed in odd-numbered years, so a recent sale price can feed the next assessed value on an apartment building in St. Charles County. The St. Charles County Assessor's office sets the assessed value; local taxing districts then apply their own levies on top.
Because the state sets the 32% commercial ratio statewide, the swing factor for an owner selling in St. Charles County is the local tax rate stack, not the assessment ratio itself. Pull the current parcel tax bill before pricing a building, since school, fire, and municipal levies all stack on the county's base rate.
What this means if you sell in St. Charles County
If you plan to sell commercial property in St. Charles County, MO, you are selling into a below-average renter share, at 19.5% against 31.9% for Missouri, but a tight 6.2% rental vacancy rate. That combination means fewer renter households chasing units, yet little slack in the ones that exist. Buyers will weigh a building's city against county norms; a St. Peters property faces more vacancy risk than one in O'Fallon.
Missouri's 2025 preemption law, RSMo 441.043, bars any St. Charles County city from capping rents or security deposits, so state rules govern lease terms rather than local ordinances. If you plan to sell an apartment building in St. Charles County, bring your rent roll, T-12 and current tax bill. As a multifamily buyer in St. Charles County, we review 5+ unit buildings in O'Fallon, St. Charles, St. Peters and Wentzville on those numbers.
Local Knowledge
Selling Multifamily In Missouri
What we factor into every St. Charles County offer:
More about Missouri →- Missouri caps security deposits at two months' rent, returnable within 30 days under RSMo 535.300.
- RSMo 441.043 bars St. Charles County cities from local rent or deposit caps as of August 2025.
- Apartment buildings are assessed at 32% of market value statewide; real property reassesses in odd years.
- Rental vacancy varies from 1.5% in O'Fallon to 9.1% in St. Peters; check city-level occupancy before pricing.
Property Tax
Property Tax In St. Charles County For Apartment Owners
Homeowners in St. Charles County pay a median of $3,480 a year in property tax on a median home value of $320,800, an effective rate of about 1.08%, according to the Census Bureau’s 2020-2024 American Community Survey. That is above the Missouri statewide average of 0.89%.
How property tax works in Missouri: classes, assessment and appeals →Estimate a building’s tax bill with the property tax calculator →
- Those figures describe owner-occupied homes. An apartment building can be assessed on a different basis or in a different class, so its bill as a share of value may differ.
- A sale can reset the assessed value. Before you price a St. Charles County building, check how Missouri reassesses property after a transfer and model the buyer’s new tax bill.
- Pull the actual tax bill from the St. Charles County assessor or tax collector. City, school and special-district levies stack on top of the county rate.
Seller Guides
Selling A Building In St. Charles County
Learn More
Taxes & Rules For St. Charles County Property
The Missouri rules that shape any deal in St. Charles County: what a sale costs in tax, how buildings are taxed, what landlords must follow, and how to defer gains.
Our Buy Box
What We Buy In St. Charles County
Asset Type
Multifamily, 5+ Units
Apartment buildings and income-producing residential.
Size
5 – 100+ Units
Sweet spot: 15–25 units.
Condition
Stabilized To Distressed
Value-add, mismanaged, and high-vacancy properties welcome.
Deal Types
Listed Or Off-Market
Direct-to-owner, pocket listings, portfolios.
How Selling To Us Works
- 01
Submit The Deal
Send the address, unit count, asking price, and a rent roll or T-12 if you have them.
- 02
Initial Review
We review it against our buy box and give clear feedback — typically within 48 hours.
- 03
Underwriting & LOI
If it fits, we underwrite in detail and submit a written letter of intent.
- 04
Diligence & Close
Inspections and financing on the agreed timeline, then a professional, predictable closing.
St. Charles County Seller FAQ
What is the renter share in St. Charles County?
Renters held 19.5% of St. Charles County's 161,311 occupied homes in the Census Bureau's 2020-2024 American Community Survey, well below Missouri's 31.9% share. St. Charles city has the highest renter share of the covered cities at 32.0%.
How much have rents risen in St. Charles County?
Median gross rent in St. Charles County rose from $1,041 in the 2015-2019 survey to $1,370 in 2020-2024, a 31.6% gain. HUD's FY2027 two-bedroom Fair Market Rent for the St. Louis metro area is $1,349.
Does St. Charles County have rent control?
No. RSMo 441.043, as amended in 2025, bars Missouri cities and counties from capping rent or security deposits. Lease terms in St. Charles County follow state law and market conditions, not local ordinances.
How are apartment buildings taxed in St. Charles County?
Missouri assesses commercial property, including apartment buildings, at 32% of market value under RSMo 137.016, versus 19% for residential property. St. Charles County reassesses real property in odd-numbered years.
How do I sell commercial property in St. Charles County, MO?
Send the address, unit count, and any financials. We review St. Charles County apartment buildings of 5+ units, give feedback typically within 48 hours, and follow with a written letter of intent if it fits.
Do you buy apartment buildings throughout St. Charles County?
Yes. We evaluate multifamily properties across St. Charles County, including O’Fallon, St. Charles, St. Peters, and Wentzville, as well as smaller towns and unincorporated areas. Every property is reviewed on its own fundamentals.
What size St. Charles County properties do you buy?
Apartment buildings and income-producing residential properties with 5 or more units. Our sweet spot is 15–25 units, and we review larger communities with capital partners.
Will you buy a property that needs work or has high vacancy?
Yes. We underwrite value-add, mismanaged, and distressed properties as they are today — no repairs or lease-up required before selling.
Is it possible to sell rental property in St. Charles County without evicting tenants?
It is. We buy apartment buildings occupied, and tenants stay on their current leases. Skyline Capital Investments is a commercial real estate buyer of 5+ unit buildings, so occupied properties are the norm for us.
Do I need a broker to sell my apartment building in St. Charles County?
No. You can work with us directly, or your broker can bring the deal to us. Either way, conversations stay confidential.
How do property taxes factor into a St. Charles County offer?
Property is assessed at the county level (the county seat is St. Charles), within Missouri rules. Missouri assesses residential property at 19% of market value and reassesses in odd-numbered years. We model the tax bill based on the likely post-sale valuation.
Submit A Deal
Have A Property In St. Charles County?
Tell us about it. Owners, agents, brokers, and deal finders are all welcome — conversations are confidential.
