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Property profile & analytics
OFF-MARKET
Estimated value
$735,000
Medical Office Space
12 Putnam Ave 40 Cos Cob, CT 06807
Entity Owned
11-yr Hold
Free & Clear
Property ID
US15-0732917
Property profile
Verified
Property type
Medical Office Space
Use group
MEDICAL BUILDING
Year built
1976
Construction
FRAME
Total area
8,000 SF
Lot
0.54 ac (23,522 SF)
Zoning code
R-7
APN
GREE M:08 B:1594/S
UPID
US15-0732917
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
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
$485k
CAP Approach
CAP
by Request
Comparable Approach
Comparable
$983k
Blend (final)
Blend
$735k
Owner & transaction history
40 East Putnam Ave LLC · 11 yrs held
40 East Putnam Ave LLC
since 2015
1 recorded transaction
Zoning & alternative use
R-7 · Cos Cob, CT
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Restaurant
$1.2M
+91.2%
Auto repair, garage
$805,000
+30.4%
Commercial (general)
$790,000
+27.6%
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 Cos Cob submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Cos Cob 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
$485,000
CAP Approach
CAP Return
Estimation
6%
by Request
6.5%
by Request
7%
by Request
Alternative Use
Use
Estimation
MEDICAL BUILDING
$620,000
Current use
RESTAURANT
$1,185,000
Change: +91% · Conversion: Difficult
AUTO REPAIR, GARAGE
$805,000
Change: +30% · Conversion: Difficult
COMMERCIAL (GENERAL)
$790,000
Change: +28% · Conversion: Easy
RETAIL STORES
$720,000
Change: +17% · Conversion: Difficult
APARTMENT HOUSE (5+ UNITS)
$715,000
Change: +16% · Conversion: Moderate
INDUSTRIAL (GENERAL)
$505,000
Change: -18% · Conversion: Difficult
Blend value · Realmo final
$735k
Range $662k – $809k · ±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
$92 / 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 2023Property tax & assessments
Tax year 2023
Tax billed
$35,839
Tax year 2023
Assessed value
$3,080,000
Assessed 2023
Previous assessed
$3,207,540
-4.0% YoY
Effective rate
1.16%
On assessed value
Assessed land
$1,787,310
Assessed improvement
$1,292,690
Applied tax rate
124.0000
Comparables
6 recent transactions · within 1.5 miComparable in this city
6 recent transactions
Comparable in this City
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
Medical Office Space
Use group
MEDICAL BUILDING
Status
Off-Market
Year built
1976
Construction
FRAME
Heating
FORCED AIR
Buildings
1
Stories
2
Rooms
11
Total area
8,000 SF
Lot
0.54 ac (23,522 SF)
Zoning code
R-7
APN
GREE M:08 B:1594/S
UPID
US15-0732917
Jurisdiction
GREENWICH
Zoning & alternative use
R-7 · Cos Cob, CT
Zoning R-7 · permitted uses
R-7 · Cos Cob, CT
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Cos Cob. Always verify with local authorities before improvements.
Alternative use value scenarios
Repositioning upside vs current use
MEDICAL BUILDING Current
Est. value
$620,000
RESTAURANT
Est. value
$1.2M
AUTO REPAIR, GARAGE
Est. value
$805,000
COMMERCIAL (GENERAL)
Est. value
$790,000
RETAIL STORES
Est. value
$720,000
APARTMENT HOUSE (5+ UNITS)
Est. value
$715,000
INDUSTRIAL (GENERAL)
Est. value
$505,000
MEDICAL BUILDING Current
RESTAURANT
AUTO REPAIR, GARAGE
COMMERCIAL (GENERAL)
RETAIL STORES
APARTMENT HOUSE (5+ UNITS)
INDUSTRIAL (GENERAL)
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
1976
Construction
FRAME
Heating
FORCED AIR
Stories
2
Buildings
1
Rooms
11
Lot
0.54 ac
Current owner
From public records · entity-resolved
40 East Putnam Ave LLC
Entity
Free & Clear · 11 yrs held
Mailing address
5047 BROADWAY, NEW YORK, NY 10034-1131
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
1 recorded event · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Jan 5, 2015
—
40 East Putnam Ave LLC
Ralph F Infanti
Warranty 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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