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225 S Main St, O Fallon, MO 63366
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Property summary
AI-generated overview
This exceptional 10,987 square foot executive office building, constructed in 1985, is situated on a 0.71-acre lot at 225 S Main Street in O'Fallon, Missouri, zip code 63366. Located in St. Charles County, this property boasts a highly visible street presence in O'Fallon's thriving commercial district, offering excellent exposure to high foot traffic. The building features a modern and attractive facade, creating a professional and inviting atmosphere. With 44 parking spaces available, ample parking is ensured for employees and clients. Its strategic location provides convenient access to major highways and public transportation, enhancing connectivity to the broader St. Louis metropolitan area. Surrounded by a diverse mix of businesses, restaurants, and retail outlets, this property presents a unique opportunity for businesses seeking a prime location with high visibility and accessibility. The asking price for this versatile property is $1,012,000. This property is ideally suited for a variety of commercial uses, including retail, office space, or a mixed-use development.
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1985
Total area
10,987 SF
Lot
0.71 ac (30,928 SF)
Zoning code
AB2
APN
2-057A-S029-00-0024.0000000
UPID
US48-0150466
Cap rate & NOI
Priority signal for investors
Implied cap rate, NOI & suggested price
Cap rate vs submarket · NOI estimate · 3 price anchors
Current use
Occupant on record · Public records
-
Dental Office
-
Law Firm
-
Training Center
-
Hair Salon
-
Spa & Massage Center Alternative Medicine Practice
Location
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
$1.29M
Blend (final)
Blend
$765k
Owner & transaction history
since 2022
Last sale
$750,000
3 recorded transactions
Zoning & alternative use
AB2 · O Fallon, MO
Top alternative use upside
Auto repair, garage
$1.9M
+22.0%
Retail stores
$1.8M
+17.6%
Neighborhood: shopping center
$1.6M
+0.0%
Comparables
6 recent transactions · within 1.5 miComparable in this city
6 recent transactions
Comparable in this City
Similar Nearby for Sale
Similar Nearby for Lease
Recent comparable sales
Sale price & price/SF · Sale date & distance · Adjustments & confidence
Value estimation
Instant AI valuation built from comps, income signals, and proprietary benchmarks. A defensible range, not a single guess.
Unlock the complete Valuation workflow
Full NOI reconstruction, selected comps, alternative-use scenarios, data audit and PDF export.
Full NOI build-up · 6 steps
All 4 comparables with addresses
4 alternative uses screened
Sensitivity value band
Source audit · 6 inputs
PDF export
Professional Plan · 30 reports
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Summary
1
Valuation conclusion
Included free
Estimated market value
$765k
Value range
$689k – $842k
±10% around blend
Estimated value / SF
$70 / SF
Confidence
Low
4 county-verified comps
Property data
88
Market benchmarks
67
Comparable evidence
40
Income certainty
100
$689k
blend $765k
$842k
Market-derived valuation under stabilized market assumptions. Desktop analysis. No physical inspection performed.
2
Subject property
Included free
GBA
10,987 SF
Lot area
0.71 ac
Year built
1985
Stories
2
APN
2-057A-S029-00-0024.0000000
Zoning
AB2
Assessed value
$270,864
3
Income approach: direct capitalization
Partial preview
Estimated Stabilized NOI, derived from market rent, vacancy and expense benchmarks. Actual property income not reported.
Estimated market rent / SF
Potential gross income
Vacancy allowance
Effective gross income
Benchmark operating expenses
Stabilized NOI
Selected cap rate
4
Sales comparison
Partial preview
Sales approach indication
$1.97M
Weighted, 4 comps · low confidence
Evidence
4 found · 4 selected
County-verified recorded sales
Comparable
Sale dateSale price$ / SF
13.1 mi away · 11,090 SF
16.5 mi away · 13,052 SF
20.4 mi away · 8,180 SF
5
Sensitivity & risk
Partial preview
Downside
−10%
Base
$765k
Upside
+10%
Bounds of the ±10% band vs the blend — never simulated scenarios.
6
Current market position
Included free
Benchmark
Observed band ($/SF)AverageSubject delta
Submarket 44 sales
$142
-51%
County 88 sales
$140
-50%
Band = middle half (Q1–Q3) of recorded sale $/SF for this use type per geography; the diamond marks the subject at $70/SF. Delta below average reads as headroom. Source: Realmo CRE sales derivatives (county records).
7
Alternative use screening
Partial preview
Top alternative use
Auto Repair, Garage
Gross theoretical uplift
+22%
vs current-use indication
Retail Stores
Neighborhood: Shopping Center
Office Building · current use
Values shown before conversion costs, entitlement costs, capital expenditures and stabilization risk.
8
Data & methodology
Included free
Building area
County record
Property tax
Not available
Assessed value
County record
Zoning designation
County record
Operating expenses
Modeled
Market rent
Market benchmark
Not analyzed due to unavailable source data: actual rent roll, tenant leases, physical condition and capital
requirements are outside a desktop analysis.
Cost Approach excluded: income and sales evidence cover the value conclusion.
Automated valuation analysis, not a licensed appraisal. Figures are derived from public
records and proprietary models. Desktop analysis: no physical inspection, tenant leases or reported
property income. Verify with a licensed appraiser before transacting.
Cap rate
Cap rate calculated from real income and expense signals, benchmarked against sales of similar assets nearby.
Unlock the complete Cap Rate workflow
Full market tables, editable assumptions, comparable evidence, saved work and exports.
9-scenario matrix
Comparable evidence · 4 sales
NOI build-up · 9 steps
Market rates by use type
PDF export
Professional Plan · 30 reports
from $99/month
from $99/month
Overview
No cap rate is computable for this property yet: no recorded sale, income signal or market-rate row for its use type.
Price sensitivity
The rate is the decision lever; valuation is the consequence.
Test a cap rate
Implied value$2.69M
Move the market yield to see immediate price impact.
Value / SF
$245
Vs. selected
Base
Derivation
NOI ÷ cap
Arithmetic over the derived NOI * — not market scenario modeling.
NOI × cap matrix
Preview
Preview of 9 modeled outcomes.
NOI
5.00%7.00%9.00%
$169k
$3.39M
$2.42M
$1.88M
$188k
$3.76M
$2.69M
$2.09M
$207k
$4.14M
$2.96M
$2.30M
NOI sensitivity ±10% across the 5 / 7 / 9% anchors — derivation of the NOI above.
Comparable evidence
Partial preview
Recorded sales nearby
4 found
Low confidence · county-verified
Closest comparable
$1.75M
10.8 mi · Dec 2025 · $192/SF
Property tax & assessments
Property tax & assessments
Assessed value
$270,864
Assessed 2023
Previous assessed
$273,196
-0.9% YoY
Land market value
$162,372
Improvement market value
$684,077
Total market value
$846,449
Applied tax rate
2.0000
Automated cap rate analysis. Based on public records, market benchmarks and proprietary
models. Verify with a licensed professional before transacting.
Property description
Physical attributes from public recordsBuilding & lot
Public records
Property type
Office buildings
Use group
OFFICE BUILDING
Status
For Sale
Year built
1985
Heating
CENTRAL
Cooling
YES
Stories
2
Total area
10,987 SF
Lot
0.71 ac (30,928 SF)
Zoning code
AB2
APN
2-057A-S029-00-0024.0000000
UPID
US48-0150466
Jurisdiction
ST CHARLES
Zoning & alternative use
AB2 · O Fallon, MOZoning AB2 · permitted uses
AB2 · O Fallon, MO
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Alternative use value scenarios
Repositioning upside vs current use
Alternative use deep dive — conversion cost, permits, timeline
Conversion cost estimate · Permit path & risks · Stabilized NOI per option
Building & site characteristics
From public records
Year built
1985
Heating
CENTRAL
Cooling
Yes
Stories
2
Lot
0.71 ac
Zoning
The recorded zoning designation, what the district officially allows, and the municipal source it comes from.
Zoning designation
County-recorded code
AB2
Jurisdiction
O Fallon, MO
Recorded code
AB2
Ownership Intelligence
Find the owner behind the property.
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Ownership report
Owner identityResolved entity and name variants
Portfolio holdingsLinked properties and estimated value
Deal signalsSell-side activity worth following
Debt & historyRecorded loans and transaction history
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Owner of record and activity signals are derived from public records and modeled classifications.
They do not confirm beneficial ownership or intent to transact.
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