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Property profile & analytics
OFF-MARKET
Estimated value
$7,710,000
Office buildings
600 Main St Waltham, MA 02452-5581
Individually Owned
27-yr Hold
~
Est. High Equity
Property ID
US38-1697591
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1890
Construction
STEEL FRAME
Total area
37,154 SF
Lot
1.19 ac (51,867 SF)
APN
WALT M:060 B:021 L:0001
UPID
US38-1697591
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
-
RTN Federal Credit Union Credit Union
-
Kirk Nahabedian Realtor Real Estate Agency
-
Raytheon Credit Union Credit Union
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
$8.00M
Blend (final)
Blend
$7.71M
Owner & transaction history
William H Norris · 27 yrs held
William H Norris
since 1999
3 recorded transactions
Zoning & alternative use
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Commercial (general)
$10.8M
+14.1%
Restaurant
$10.8M
+14.0%
Auto repair, garage
$10.5M
+10.5%
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
$9,465,000
Current use
COMMERCIAL (GENERAL)
$10,800,000
Change: +14% · Conversion: Easy
RESTAURANT
$10,785,000
Change: +14% · Conversion: Moderate
AUTO REPAIR, GARAGE
$10,455,000
Change: +10% · Conversion: Difficult
NEIGHBORHOOD: SHOPPING CENTER
$10,295,000
Change: +9% · Conversion: Difficult
RETAIL STORES
$10,015,000
Change: +6% · Conversion: Moderate
APARTMENT HOUSE (5+ UNITS)
$8,560,000
Change: -10% · Conversion: Easy
Blend value · Realmo final
$7.71M
Range $6.94M – $8.48M · ±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
$208 / 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
$128,282
Tax year 2024
Assessed value
$6,194,200
Assessed 2024
Previous assessed
$6,194,200
+0.0% YoY
Effective rate
2.07%
On assessed value
Assessed land
$1,474,000
Assessed improvement
$4,720,200
Comparables
6 recent transactions · within 1.5 miComparable in this city
6 recent transactions
Comparable in this City
Similar Nearby for Sale
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
1890
Construction
STEEL FRAME
Heating
FORCED AIR
Cooling
YES
Buildings
1
Stories
3
Units
1
Bathrooms
8
Total area
37,154 SF
Lot
1.19 ac (51,867 SF)
APN
WALT M:060 B:021 L:0001
UPID
US38-1697591
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
$9.5M
COMMERCIAL (GENERAL)
Est. value
$10.8M
RESTAURANT
Est. value
$10.8M
AUTO REPAIR, GARAGE
Est. value
$10.5M
NEIGHBORHOOD: SHOPPING CENTER
Est. value
$10.3M
RETAIL STORES
Est. value
$10.0M
APARTMENT HOUSE (5+ UNITS)
Est. value
$8.6M
OFFICE BUILDING Current
COMMERCIAL (GENERAL)
RESTAURANT
AUTO REPAIR, GARAGE
NEIGHBORHOOD: SHOPPING CENTER
RETAIL STORES
APARTMENT HOUSE (5+ UNITS)
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
1890
Construction
STEEL FRAME
Heating
FORCED AIR
Cooling
Yes
Stories
3
Buildings
1
Units
1
Bathrooms
8
Lot
1.19 ac
Current owner
From public records · entity-resolved
William H Norris
Individual
Mailing address
600 MAIN ST, WALTHAM, MA 02452-5581
Ownership since
1999
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
3 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Apr 1, 2002
—
Joseph E Fagan
—
Deed Of Trust
related
$10,635 · Rtn FCU
Nov 28, 2000
—
Stephen J Graceffa
—
Deed Of Trust
related
$75,000 · Rtn FCU
Apr 23, 1999
$269,900
William H Norris
610 Trapelo Rd RT
Grant Deed
$180,000 · Resource Bancshares Mtg Group
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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