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Property profile & analytics
OFF-MARKET
Estimated value
$560,000
Office Spaces
21 Railroad Ave 9, Duxbury, MA 02332-3871
Entity Owned
10-yr Hold
Free & Clear
Property ID
US38-1483838
Property profile
Verified
Property type
Office Spaces
Use group
CONDOMINIUM OFFICES
Year built
1996
Total area
3,073 SF
APN
DUXB M:106 B:741 L:102 U:I
UPID
US38-1483838
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
-
Newport ONE Association / Organization
-
DesRosiers & Tierney, LLC Law Firm
-
law office of christine p coughlin Law Firm
-
Megan Mc Millin Law Office Law Firm
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
$448k
Blend (final)
Blend
$560k
Owner & transaction history
Beacon Bay LLC · 10 yrs held
Beacon Bay LLC
since 2015
2 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Retail stores
$635,000
+2.7%
Auto repair, garage
$635,000
+2.4%
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 Duxbury submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Duxbury 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
by Request
ML approach
by Request
CAP Approach
CAP Return
Estimation
6%
by Request
6.5%
by Request
7%
by Request
Alternative Use
Use
Estimation
OFFICE BUILDING
$620,000
Current use
RETAIL STORES
$635,000
Change: +3% · Conversion: Moderate
AUTO REPAIR, GARAGE
$635,000
Change: +2% · Conversion: Difficult
COMMERCIAL (GENERAL)
$560,000
Change: -10% · Conversion: Easy
Blend value · Realmo final
$560k
Range $504k – $616k · ±10%
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
$182 / 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 2024Property tax & assessments
Tax year 2024
Tax billed
$6,332
Tax year 2024
Assessed value
$629,400
Assessed 2024
Previous assessed
$629,400
+0.0% YoY
Effective rate
1.01%
On assessed value
Assessed improvement
$629,400
Comparables
6 recent transactions · within 1.5 miComparable in this city
6 recent transactions
Comparable in this City
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 Spaces
Use group
CONDOMINIUM OFFICES
Status
Off-Market
Year built
1996
Heating
FORCED AIR
Cooling
YES
Buildings
1
Stories
2
Units
8
Rooms
1
Bathrooms
4
Total area
3,073 SF
APN
DUXB M:106 B:741 L:102 U:I
UPID
US38-1483838
Jurisdiction
DUXBURY
Metro division
BOSTON-QUINCY, MA METROPOLITAN DIVISION
Zoning & alternative use
Zoning · permitted uses
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Alternative use value scenarios
Repositioning upside vs current use
OFFICE BUILDING Current
Est. value
$620,000
RETAIL STORES
Est. value
$635,000
AUTO REPAIR, GARAGE
Est. value
$635,000
COMMERCIAL (GENERAL)
Est. value
$560,000
OFFICE BUILDING Current
RETAIL STORES
AUTO REPAIR, GARAGE
COMMERCIAL (GENERAL)
Alternative use deep dive — conversion cost, permits, timeline
Conversion cost estimate · Permit path & risks · Stabilized NOI per option
Alternative use deep dive
Conversion cost · permit path · stabilized NOI per option
Building & site characteristics
From public records
Year built
1996
Heating
FORCED AIR
Cooling
Yes
Stories
2
Buildings
1
Units
8
Rooms
1
Bathrooms
4
Current owner
From public records · entity-resolved
Beacon Bay LLC
Entity
Free & Clear · 10 yrs held
Mailing address
21 RAILROAD AVE STE #2, DUXBURY, MA 02332-3871
Ownership since
2015
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
2 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Jul 15, 2015
$400,000
Beacon Bay LLC
Millbrook Square LLC
Quit Claim Deed
related
—
—
—
21 Railroad Avenue LLC
—
Deed Of Trust
related
$2,000,000 · Citizens Bk/ri
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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