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Property profile & analytics
OFF-MARKET
Estimated value
$1,560,000
Office buildings
225 Mason St Milwaukee, WI 53202-3667
Entity Owned
2-yr Hold
Free & Clear
Property ID
US92-0382126
Property summary
AI-generated overview
The Sentinel Building, a historic 10-story building at 225 E Mason St, Milwaukee, WI 53202, offers 30,848 square feet of prime office space in the Downtown submarket. This Class B building, constructed in 1892, features a variety of office suite options, suitable for traditional, creative, or executive office uses. The property boasts 12 total suites, with a minimum divisible space of 733 square feet and a maximum contiguous space of 3,231 square feet. Currently, 25,463 square feet is available for lease. The building sits on a 0.09-acre lot and is zoned C9F(B). While there is no on-site parking, the building does include elevators. The main level provides excellent street visibility, while the second floor offers a wide-open layout with high exposed ceilings. Divisible office suites are available from the third floor to the tenth. Ownership is open to collaborating with prospective tenants on build-out options. This unique property presents a rare opportunity in a highly desirable location.
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1892
Total area
30,848 SF
Lot
0.09 ac (3,900 SF)
Zoning code
C9F(B)
APN
392-0683-000
UPID
US92-0382126
Cap rate & NOI
Priority signal for investors
Implied cap rate, NOI & suggested price
Cap rate vs submarket · NOI estimate · 3 price anchors
Implied cap rate, NOI & suggested price
Cap vs submarket · NOI estimate · 3 price anchors
Current use
Occupant on record · Public records
-
Trae Properties Real Estate Agency
-
Sims Capital Management Financial Advisor
-
Black & Veatch Engineering Consultant Engineer
-
North Shore Homes Real Estate Agency
-
Breakaway Bicycle Courier Courier Service Postal Service
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
$1.56M
CAP Approach
CAP
by Request
Comparable Approach
Comparable
by Request
Blend (final)
Blend
$1.56M
Owner & transaction history
Maq Sentinel LLC · 2 yrs held
Maq Sentinel LLC
since 2023
Last sale
$1.2M
5 recorded transactions
Zoning & alternative use
C9F(B) · Milwaukee, WI
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Cap rate
Implied · in-place · derived from last sale + estimated NOI
Implied Cap rate
#1
Implied · in-place · NOI ÷ last sale
In-place · derived from last sale + estimated NOI
Cap rate, NOI & submarket benchmark
Implied cap rate vs Milwaukee submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Milwaukee submarket · NOI estimate · typical band, median & reading
Refine your cap rate
8-question underwriting flow
1.
Property current status — Going-In vs Stabilized
2.
Price for denominator — asking / offer / market
3.
Leasing status & lease structure (NNN / Gross)
4.
Tenant risk profile & vacancy assumption
5.
Upload T12 / rent roll / OM (optional)
Refine in 60 seconds, get exact suggested price
T12 upload · Submarket benchmarks · Sensitivity grid
Suggested price · 3 cap rate anchors
Income approach @ 5% / 7% / 9% — aggressive / typical / conservative
Suggested price at 5% / 7% / 9% cap
Aggressive / typical / conservative · Implied $/SF per anchor · Sensitivity grid
Suggested price at 5% / 7% / 9% cap
Aggressive / typical / conservative · implied $/SF · sensitivity
Value
AI, CAP & Alternative Use estimations · Realmo proprietary blendValue Estimations
Based on Realmo’s proprietary methodology
AI Approach
Method
Estimation
Statistic approach
$1,560,000
ML approach
$1,560,000
CAP Approach
CAP Return
Estimation
6%
by Request
6.5%
by Request
7%
by Request
Blend value · Realmo final
$1.56M
Range $1.40M – $1.72M · ±10% · vs last sale $1.20M (Oct 27 2023)
Last sale anchor
$1.20M
Oct 27 2023
Realmo estimate · informational only.
These numbers are calculated by our models from public records and may not reflect actual market value.
Not an appraisal.
Verify with a licensed appraiser before transacting. Realmo accepts no liability for divergence from real-world outcomes.
View the full estimation — every method, every assumption
Confidence drivers & risk notes · Custom comparable set · Free for first 3 / day
Full estimation methodology
Every method · every assumption · confidence drivers
Price per SF
Sale + rent benchmarks
Subject property
$51 / SF
Submarket sale & rent benchmarks
Median sale $/SF · Asking & closed rent · Submarket vacancy
Submarket sale & rent benchmarks
Median sale $/SF · asking & closed rent · submarket vacancy
Property tax & assessments
Tax year 2022Property tax & assessments
Tax year 2022
Tax billed
$49,211
Tax year 2022
Assessed value
$2,066,800
Assessed 2022
Previous assessed
$2,066,800
+0.0% YoY
Effective rate
2.38%
On assessed value
Assessed land
$273,000
Assessed improvement
$1,793,800
Land market value
$273,000
Improvement market value
$1,793,800
Total market value
$2,066,800
Applied tax rate
1.0000
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
Recent comparable sales
Sale price & $/SF · sale date & distance · adjustments
Property description
Physical attributes from public recordsBuilding & lot
Public records
Property type
Office buildings
Use group
OFFICE BUILDING
Status
Off-Market
Year built
1892
Heating
YES
Stories
10
Units
15
Total area
30,848 SF
Lot
0.09 ac (3,900 SF)
Zoning code
C9F(B)
APN
392-0683-000
UPID
US92-0382126
Jurisdiction
MILWAUKEE
Zoning & alternative use
C9F(B) · Milwaukee, WI
Zoning C9F(B) · permitted uses
C9F(B) · Milwaukee, WI
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Milwaukee. Always verify with local authorities before improvements.
Building & site characteristics
From public records
Year built
1892
Heating
YES
Stories
10
Units
15
Lot
0.09 ac
Current owner
From public records · entity-resolved
Maq Sentinel LLC
Entity
Free & Clear · 2 yrs held
Mailing address
6221 W ATLANTIC BLVD, MARGATE, FL 33063-5128
Ownership since
2023
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
5 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Oct 27, 2023
$1,195,000
Maq Sentinel LLC
Sentinel Suites LLC
Warranty Deed
—
Jan 23, 2023
—
Sentinel Suites LLC
Mason St Ventures LLC
Warranty Deed
—
Feb 12, 2021
$2,100,000
Mason St Ventures LLC
Sentinel Suites LLC
Warranty Deed
$1,900,000 · Sentinel Suites LLC
Sep 4, 2018
$1,525,000
Sentinel Suites LLC
225 East Mason Property LLC
Warranty Deed
—
May 11, 2004
$1,900,000
225 East Mason Property LLC
Two Twenty Five Partners
Warranty Deed
—
Coming soon
Costs & Benchmarks
Operating expenses, capex projections, utility benchmarks, and submarket comparables — all in one view.
Coming soon
Risks
Flood, climate, environmental, title, and tenant-concentration risk — surfaced with mitigations and source citations.
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