311 ARSENAL ST
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Location
311 ARSENAL ST
Mblu
1301/ 1/ 1311A/ /
Acct#
12469
Owner
ARE-MA REGION NO. 75 LLC
Total Market Value
$101,750,400
PID
12469
Building Count
1
Current Value
Assessment
Valuation YearImprovementsLandTotal
2026$101,750,400$0$101,750,400

Owner of Record
OwnerARE-MA REGION NO. 75 LLC
Co-OwnerC/O ALEXANDRIA REAL ESTATE
AddressPO BOX 847
CARLSBAD, CA 92018
Sale Price$525,500,000
Certificate
Book & Page 73848/56
Sale Date12/18/2019
Instrument1O

Ownership History
Ownership History
OwnerSale PriceCertificateBook & PageInstrumentSale Date
ARE-MA REGION NO. 75 LLC $525,500,000 73848/561O12/18/2019
ATHENA ARSENAL LLC $168,500,000 61782/351U05/13/2013
HARVARD UNIVERSITY $162,641,904 32863/5261D05/15/2001
CHARLES RIVER BUS CTR ASSOC. $20,100,00029502/09229502/0921O12/10/1998
UNITED STATES OF AMERICA$7,500,00029012/42229012/4221E08/25/1998

Building Information
Building 1 : Section 1
Year Built: 1862
Living Area: 386,100
Replacement Cost: $114,928,786
Building Percent Good: 87
Replacement Cost
Less Depreciation:
$99,988,000
Building Attributes
FieldDescription
StyleOffice Bldg
ModelCommercial
GradeSuperb
Stories4
Exterior Wall 1Brick
Exterior Wall 2 
Roof StructureFlat
Roof CoverMembrane
Int Wall 1Drywall
Int Wall 2 
Int Floor 1Concrete
Int Floor 2 
Heat FuelGas
Heat TypeForced H/A
AC Percent100
Full Baths0
Half Baths20
FrameSteel
Plumbing 
Wall Height16.00
Fireplace(s)0
Fireplace RatingAverage
Kitchen RatingNone
% Sprinkler100
Half Bath RatingGood
Living Units1
Full Bath RatingNone
Kitchens0
Bsmt Garage0
FoundationSlab
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
FUSFinished Upper Story 237,600 237,600
BASBase Floor 118,800 118,800
FHSFinished Half Story 59,400 29,700
   415,800 386,100

Extra Features
Extra Features
CodeDescriptionSizeValueBldg #
ELV1Pass Elev 1-3stop4.00 UNITS$115,0001
ELV1Pass Elev 1-3stop4.00 UNITS$306,4001
MSC18Crane50.00 UNITS$1,5001

Land
Land Use
Use Code404C
DescriptionR+D BLD  
Zone
NeighborhoodCE
Alt Land ApprNo
Category
Land Line Valuation
Size (Acres)0
Frontage
Depth
Total Market Land$0

Outbuildings
Outbuildings
CodeDescriptionSub CodeSub DescriptionSizeValueBldg #
LT2W/Double Light  1.00 UNITS$15,5001
LT1Lights-In W/Pl  2.00 UNITS$2,1001
PAV1Paving-Asphalt  22800.00 S.F$83,9001
Valuation History
Assessment
Valuation YearImprovementsLandTotal
2025$398,835,500$134,308,400$533,143,900
2024$407,715,992$92,626,500$500,576,992
2023$337,262,900$67,724,000$405,221,400

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