Entity Owned 
For Sale
1 / 4
$675,000
3505 College Ave, Alton, IL 62002
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Property summary
AI-generated overview
This one-story medical office building at 3505 College Ave in Alton, Illinois contains nearly 3,600 square feet of finished space and is configured as two separate areas within the same building, with each space currently occupied. The property includes a large on-site parking lot and features a newer HVAC system. The building is positioned with convenient access from College Avenue, with proximity to Homer Adams Pkwy and I-255.
Property profile
Verified
Property type
Other office properties
Use group
OFFICE (GENERAL)
Year built
2000
Total area
3,600 SF
Lot
0.57 ac (24,829 SF)
APN
23-1-08-08-09-101-052-001
UPID
US28-3326769
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
-
Physician
-
Physician
-
Physician
-
Department Store
Location
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
$375k
CAP Approach
CAP
$540k
Comparable Approach
Comparable
$500k
Blend (final)
Blend
$520k
Owner & transaction history
since 2005
7 recorded transactions
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 5 comparables with addresses
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
$520k
Value range
$468k – $572k
±10% around blend
Estimated value / SF
$144 / SF
Confidence
High
5 county-verified comps
Property data
88
Market benchmarks
100
Comparable evidence
50
Income certainty
100
$468k
blend $520k
$572k
Market-derived valuation under stabilized market assumptions. Desktop analysis. No physical inspection performed.
2
Subject property
Included free
GBA
3,600 SF
Lot area
0.57 ac
Year built
2000
Stories
1
APN
23-1-08-08-09-101-052-001
Assessed value
$183,240
Annual tax
$16,076
3
Income approach: direct capitalization
Partial preview
Income approach indication
$540k
Direct capitalization · @ 6.5% CAP return
@ 6% CAP return
$585k
@ 6.5% CAP return
$540k
@ 7% CAP return
$500k
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
Property tax
$16,076
Selected cap rate
4
Sales comparison
Partial preview
Sales approach indication
$209k
Weighted, 5 comps · high confidence
Evidence
5 found · 5 selected
County-verified recorded sales
Comparable
Sale dateSale price$ / SF
2.1 mi away · 3,498 SF
2.8 mi away · 3,850 SF
3.0 mi away · 2,520 SF
3.0 mi away · 2,522 SF
5
Sensitivity & risk
Partial preview
Downside
−10%
Base
$520k
Upside
+10%
Bounds of the ±10% band vs the blend — never simulated scenarios.
6
Current market position
Included free
Benchmark
Observed band ($/SF)AverageSubject delta
ZIP 138 sales
$77
+87%
Submarket 138 sales
$77
+87%
County 888 sales
$107
+35%
Band = middle half (Q1–Q3) of recorded sale $/SF for this use type per geography; the diamond marks the subject at $144/SF. Delta below average reads as headroom. Source: Realmo CRE sales derivatives (county records).
7
Data & methodology
Included free
Building area
County record
Property tax
County record
Assessed value
County record
Zoning designation
Not available
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 · 5 sales
NOI build-up · 9 steps
Market rates by use type
PDF export
Professional Plan · 30 reports
from $99/month
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Overview
Selected market yield
9.40%
Selected cap rate for this other office properties
Derived from the Alton market rent, vacancy and expense benchmarks for this use type.
Lower yield / higher price
Higher yield / lower price
5.0%
This property · 9.40%
9.0%
NOI (est.)
$57k *
* derived from a real price signal at a 7% cap
Price sensitivity
The rate is the decision lever; valuation is the consequence.
Test a cap rate
Implied value$607k
Move the market yield to see immediate price impact.
Value / SF
$169
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
8.90%9.40%9.90%
$51k
$577k
$546k
$518k
$57k
$641k
$607k
$576k
$63k
$705k
$667k
$634k
NOI sensitivity ±10% across the selected-rate band (±0.5 pp) — derivation of the NOI above.
Comparable evidence
Partial preview
Recorded sales nearby
5 found
High confidence · county-verified
Closest comparable
$135k
0.7 mi · Nov 2025 · $40/SF
Property tax & assessments
Tax year 2022Property tax & assessments
Tax year 2022
Tax billed
$16,076
Tax year 2022
Assessed value
$183,240
Assessed 2022
Previous assessed
$183,240
+0.0% YoY
Effective rate
8.77%
On assessed value
Assessed land
$41,160
Assessed improvement
$142,080
Land market value
$123,604
Improvement market value
$426,667
Total market value
$550,271
Applied tax rate
200.0000
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
Other office properties
Use group
OFFICE (GENERAL)
Status
For Sale
Year built
2000
Heating
NONE
Cooling
YES
Stories
1
Total area
3,600 SF
Lot
0.57 ac (24,829 SF)
APN
23-1-08-08-09-101-052-001
UPID
US28-3326769
Jurisdiction
MADISON
Zoning & alternative use
Zoning · permitted uses
No zoning code is on file for this parcel. Zoning coverage grows with every catalog release.
Building & site characteristics
From public records
Year built
2000
Heating
NONE
Cooling
Yes
Stories
1
Lot
0.57 ac
Zoning
The recorded zoning designation, what the district officially allows, and the municipal source it comes from.
No zoning code is on file for this parcel. Zoning coverage grows with every catalog release — check back, or open Location Intelligence for use analysis of this corner.
Ownership Intelligence
Find the owner behind the property.
Unlock the evidence behind ownership: portfolio, transactions, debt and signals that help you decide who to contact next.
What opens after registration
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
Private report access
See the ownership record for this address.
Registration is required before any owner information is shown.
One complete report on every paid plan · 30 · 300 reports per month.
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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Ask anything about this address in plain English.
“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
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