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Property profile & analytics
OFF-MARKET
Estimated value
$935,000
Office buildings
405 Washington St Duxbury, MA 02332-4546
Entity Owned
8-yr Hold
Free & Clear
Property ID
US38-1431134
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1800
Construction
STONE
Total area
3,416 SF
Lot
0.85 ac (37,026 SF)
Zoning code
RC
APN
DUXB M:119 B:146 L:405
UPID
US38-1431134
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
-
Consider the Lilies (Bike/Boat/Book/etc) Store Florist
-
Tidegate Capital LLC Investment Company Property Investment Company
-
Bernice Wahler Landscapes Landscaping (Bike/Boat/Book/etc) Store
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
$1.17M
Comparable Approach
Comparable
$762k
Blend (final)
Blend
$935k
Owner & transaction history
Diamond Sinacori LLC · 8 yrs held
Diamond Sinacori LLC
since 2017
2 recorded transactions
Zoning & alternative use
RC · Duxbury, MA
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Retail stores
$710,000
+2.7%
Auto repair, garage
$705,000
+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%
$1,270,000
6.5%
$1,170,000
7%
$1,090,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$690,000
Current use
RETAIL STORES
$710,000
Change: +3% · Conversion: Moderate
AUTO REPAIR, GARAGE
$705,000
Change: +2% · Conversion: Difficult
COMMERCIAL (GENERAL)
$620,000
Change: -10% · Conversion: Easy
Blend value · Realmo final
$935k
Range $842k – $1.03M · ±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
$274 / 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
$10,768
Tax year 2024
Assessed value
$1,070,400
Assessed 2024
Previous assessed
$1,070,400
+0.0% YoY
Effective rate
1.01%
On assessed value
Assessed land
$519,300
Assessed improvement
$551,100
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 buildings
Use group
OFFICE BUILDING
Status
Off-Market
Year built
1800
Construction
STONE
Heating
HOT WATER
Cooling
YES
Buildings
1
Stories
2
Units
1
Rooms
11
Bathrooms
1
Total area
3,416 SF
Lot
0.85 ac (37,026 SF)
Zoning code
RC
APN
DUXB M:119 B:146 L:405
UPID
US38-1431134
Jurisdiction
DUXBURY
Metro division
BOSTON-QUINCY, MA METROPOLITAN DIVISION
Zoning & alternative use
RC · Duxbury, MA
Zoning RC · permitted uses
RC · Duxbury, MA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Duxbury. Always verify with local authorities before improvements.
Alternative use value scenarios
Repositioning upside vs current use
OFFICE BUILDING Current
Est. value
$690,000
RETAIL STORES
Est. value
$710,000
AUTO REPAIR, GARAGE
Est. value
$705,000
COMMERCIAL (GENERAL)
Est. value
$620,000
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
1800
Construction
STONE
Heating
HOT WATER
Cooling
Yes
Stories
2
Buildings
1
Units
1
Rooms
11
Bathrooms
1
Lot
0.85 ac
Current owner
From public records · entity-resolved
Diamond Sinacori LLC
Entity
Free & Clear · 8 yrs held
Mailing address
PO BOX 348, DUXBURY, MA 02331-0348
Ownership since
2017
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
Nov 1, 2017
$7,000,000
Diamond Sinacori LLC
Battelle Memorial Inst
Quit Claim Deed
related
—
Nov 1, 2017
$8,000,000
Ditch Digger LLC
Diamond Sinacori LLC
Quit Claim Deed
related
$4,900,000 · Farm Credit Svcs
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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