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Property profile & analytics
OFF-MARKET
Estimated value
$29,435,000
Office buildings
100 5th Ave, Waltham, MA 02451-8703
Entity Owned
10-yr Hold
~
Est. High Equity
Property ID
US38-1285824
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1982
Construction
STEEL FRAME
Total area
95,981 SF
Lot
4.45 ac (193,637 SF)
APN
WALT M:031 B:006 L:0001
UPID
US38-1285824
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
-
Castle Edge Insurance Agency Insurance Agency
-
Counter Tack Security Service
-
Coldwell Banker Realty Real Estate Agency
-
Coldwell Banker Realty - Premier Communities Real Estate Agency
-
Coldwell Banker: New England Corporate Headquarters Real Estate Agency
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
$19.25M
Blend (final)
Blend
$29.44M
Owner & transaction history
Nwalp Phop Property Owner · 10 yrs held
Nwalp Phop Property Owner
since 2015
4 recorded transactions
Zoning & alternative use
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 Waltham submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Waltham 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
$30,625,000
Current use
COMMERCIAL (GENERAL)
$27,900,000
Change: -9% · Conversion: Easy
RESTAURANT
$27,865,000
Change: -9% · Conversion: Moderate
AUTO REPAIR, GARAGE
$27,015,000
Change: -12% · Conversion: Difficult
NEIGHBORHOOD: SHOPPING CENTER
$26,595,000
Change: -13% · Conversion: Difficult
RETAIL STORES
$25,875,000
Change: -16% · Conversion: Moderate
Blend value · Realmo final
$29.44M
Range $26.49M – $32.38M · ±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
$307 / 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
$787,897
Tax year 2024
Assessed value
$38,044,300
Assessed 2024
Previous assessed
$38,044,300
+0.0% YoY
Effective rate
2.07%
On assessed value
Assessed land
$5,246,600
Assessed improvement
$32,797,700
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
1982
Construction
STEEL FRAME
Heating
ELECTRIC
Cooling
YES
Buildings
1
Stories
8
Units
1
Bathrooms
16
Total area
95,981 SF
Lot
4.45 ac (193,637 SF)
APN
WALT M:031 B:006 L:0001
UPID
US38-1285824
Jurisdiction
WALTHAM
Metro division
CAMBRIDGE-NEWTON-FRAMINGHAM, 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
$30.6M
COMMERCIAL (GENERAL)
Est. value
$27.9M
RESTAURANT
Est. value
$27.9M
AUTO REPAIR, GARAGE
Est. value
$27.0M
NEIGHBORHOOD: SHOPPING CENTER
Est. value
$26.6M
RETAIL STORES
Est. value
$25.9M
OFFICE BUILDING Current
COMMERCIAL (GENERAL)
RESTAURANT
AUTO REPAIR, GARAGE
NEIGHBORHOOD: SHOPPING CENTER
RETAIL STORES
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
1982
Construction
STEEL FRAME
Heating
ELECTRIC
Cooling
Yes
Stories
8
Buildings
1
Units
1
Bathrooms
16
Lot
4.45 ac
Current owner
From public records · entity-resolved
Nwalp Phop Property Owner
Entity
Mailing address
575 5TH AVE FL, NEW YORK, NY 10017-2422
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
4 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Oct 14, 2021
—
Nwalp Phop Prop Owner LLC
—
Deed
related
$277,000,000 · Rbc Re Capital Corp
Dec 18, 2015
—
Nwalp Phop Property Owner
Mscp Prospect Hill Fee
Quit Claim Deed
related
$59,000,000 · Miscellaneous Ins Co
Dec 22, 2005
$59,300,000
Broadway Prospect Hl LLC
Prospect Hill Acquisit T
Grant Deed
related
$45,000,000 · Lehman Brothers Bank Fsb
Jul 1, 2004
—
Prospect Hill Acquisition
—
Deed Of Trust
related
$15,277,073 · Principal Mutual Life Ins
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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