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Property profile & analytics
OFF-MARKET
Estimated value
$46,825,000
Office buildings
33 Arch St, Boston, MA 02110-1424
Entity Owned
25-yr Hold
Free & Clear
Property ID
US38-0368310
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1965
Construction
CONCRETE
Total area
348,308 SF
Lot
0.53 ac (23,104 SF)
Zoning code
C
APN
CBOS W:03 P:04643 S:010
UPID
US38-0368310
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
-
Workday - Boston (Bike/Boat/Book/etc) Store Corporate Office
-
EverTrue (Bike/Boat/Book/etc) Store Corporate Office
-
MP Boston Construction Company General Contractor
-
Congress Group Inc Construction Company General Contractor
-
CBRE Real Estate Agency
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
$29.95M
Comparable Approach
Comparable
$44.76M
Blend (final)
Blend
$46.83M
Owner & transaction history
Arch St Tower LLC · 25 yrs held
Arch St Tower LLC
since 2001
2 recorded transactions
Zoning & alternative use
C · Boston, MA
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 Boston submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Boston 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%
$32,445,000
6.5%
$29,950,000
7%
$27,810,000
Blend value · Realmo final
$46.83M
Range $42.14M – $51.51M · ±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
$134 / 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
$2,277,636
Tax year 2024
Assessed value
$90,132,018
Assessed 2024
Previous assessed
$93,354,382
-3.5% YoY
Effective rate
2.53%
On assessed value
Assessed land
$6,598,939
Assessed improvement
$83,533,079
Comparables
6 recent transactions · within 1.5 miComparable in this city
6 recent transactions
Comparable in this City
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
1965
Construction
CONCRETE
Heating
NONE
Buildings
1
Total area
348,308 SF
Lot
0.53 ac (23,104 SF)
Zoning code
C
APN
CBOS W:03 P:04643 S:010
UPID
US38-0368310
Jurisdiction
BOSTON
Metro division
BOSTON-QUINCY, MA METROPOLITAN DIVISION
Zoning & alternative use
C · Boston, MA
Zoning C · permitted uses
C · Boston, MA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Boston. Always verify with local authorities before improvements.
Building & site characteristics
From public records
Year built
1965
Construction
CONCRETE
Heating
NONE
Buildings
1
Lot
0.53 ac
Current owner
From public records · entity-resolved
Arch St Tower LLC
Entity
Free & Clear · 25 yrs held
Mailing address
33 ARCH ST FL, BOSTON, MA 02110-1424
Mailing matches property
Yes
Owner-occupied
Yes
Ownership since
2001
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
Jun 19, 2001
—
Arch St Tower LLC
—
Deed Of Trust
related
$150,000,000 · Fleet National Bank
Jun 7, 2001
$117,977
Arch St Tower LLC
Bra
Grant 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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“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
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