23 ELM ST 29
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Location
23 ELM ST 29
Mblu
1236/ 4/ G/ /
Acct#
3264
Owner
WATERTOWN 23 ELM OWNER LLC
Total Market Value
$50,576,700
PID
3264
Building Count
1
Current Value
Assessment
Valuation YearImprovementsLandTotal
2026$40,515,400$10,061,300$50,576,700

Owner of Record
OwnerWATERTOWN 23 ELM OWNER LLC
Co-Owner
Address125 CAMBRIDGE PK DR STE 301
CAMBRIDGE, MA 02140
Sale Price$55,691,512
Certificate
Book & Page 83034/7
Sale Date07/23/2024
Instrument1AL

Ownership History
Ownership History
OwnerSale PriceCertificateBook & PageInstrumentSale Date
WATERTOWN 23 ELM OWNER LLC$55,691,512 83034/71AL07/23/2024
ELM STREET PROPERTY OWNER, LLC $7,250,000 74520/2051C01/04/2020
LUCY LEWIS LEE, TRUSTEE$016459/44516459/4451F09/26/1985

Building Information
Building 1 : Section 1
Year Built: 2023
Living Area: 87,201
Replacement Cost: $49,531,698
Building Percent Good: 99
Replacement Cost
Less Depreciation:
$37,758,000
Building Attributes
FieldDescription
StyleResearch/Devel
ModelCommercial
GradeGood
Stories3
Exterior Wall 1High Pressure Laminate
Exterior Wall 2Glass
Roof StructureFlat
Roof CoverMembrane
Int Wall 1Drywall
Int Wall 2 
Int Floor 1Engineered Composite
Int Floor 2Ceramic/Ston
Heat FuelGas
Heat TypeForced H/A
AC Percent100
Full Baths3
Half Baths30
FrameSteel
Plumbing 
Wall Height14.00
Fireplace(s)0
Fireplace RatingAverage
Kitchen RatingNone
% Sprinkler100
Half Bath RatingAverage
Living Units1
Full Bath RatingAverage
Kitchens0
Bsmt Garage0
FoundationConcrete
Building Photo Building Photo
Building Layout Building Layout
Building Sub-Areas (sq ft)
CodeDescriptionGross
Area		Living
Area
FUSFinished Upper Story 56,374 56,374
BASBase Floor 28,187 28,187
FSTUtility, Finished 4,400 2,640
FGRGarage 37,731 0
   126,692 87,201

Extra Features
Extra Features
CodeDescriptionSizeValueBldg #
ELF1Frt Elev 1-3 Stop1.00 UNITS$44,6001
ELV1Pass Elev 1-3stop1.00 UNITS$34,7001
SP1Solar Panels NV1.00 UNITS$01
RDCKRoofdeck1512.00 UNITS$38,6001
XFLABLab Space Fit Out 23787.00 UNITS$2,354,9001

Land
Land Use
Use Code404C
DescriptionR+D BLD  
Zone
NeighborhoodCF
Alt Land ApprNo
Category
Land Line Valuation
Size (Acres)1
Frontage
Depth
Total Market Land$10,061,300

Outbuildings
Outbuildings
CodeDescriptionSub CodeSub DescriptionSizeValueBldg #
FN3Fence-6' Chain  475.00 L.F.$13,8001
PAV1Paving-Asphalt  26085.00 S.F$83,5001
PAT1Patio-Avg  1950.00 UNITS$27,3001
ELSExtraordinary Landscape  8000.00 S.F.$120,0001
LIILevel Ii Ev Charger  4.00 UNITS$40,0001
Valuation History
Assessment
Valuation YearImprovementsLandTotal
2025$30,616,200$10,061,300$40,677,500
2024$10,758,100$9,940,000$20,841,600
2023$0$8,507,600$8,507,600

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