New search
Property profile & analytics
OFF-MARKET
Office buildings
40 Nassau Ave, Islip, NY 11751-3629
Entity Owned
Free & Clear
Property ID
US63-4079674
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Lot
0.03 ac (1,307 SF)
Zoning code
GSD
APN
0500-370.00-02.00-070.009
UPID
US63-4079674
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
-
Town of Islip Economic Development City Government Office
-
Town of Islip Assessor Office City Tax Office
-
Islip Purchasing City Government Office
-
Islip Board of Appeals City Government Office
-
Islip Receiver of Taxes City Government Office
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
by Request
Blend (final)
Blend
by Request
Owner & transaction history
TOWN ISLIP
TOWN ISLIP
Zoning & alternative use
GSD · Islip, NY
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 Islip submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Islip 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
CAP Approach
Comparable Approach
Alternative Use
Get a detailed, property-specific estimation — fast and free
Price per SF
Sale + rent benchmarks
Subject property
—
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 2020Property tax & assessments
Tax year 2020
Assessed value
$56,500
Assessed 2023
Previous assessed
$56,500
+0.0% YoY
Assessed land
$6,400
Assessed improvement
$50,100
Land market value
$87,912
Improvement market value
$688,187
Total market value
$776,099
Applied tax rate
472,802.0000
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
Heating
NONE
Lot
0.03 ac (1,307 SF)
Zoning code
GSD
APN
0500-370.00-02.00-070.009
UPID
US63-4079674
Jurisdiction
SUFFOLK
Metro division
NASSAU-SUFFOLK, NY METROPOLITAN DIVISION
Zoning & alternative use
GSD · Islip, NY
Zoning GSD · permitted uses
GSD · Islip, NY
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Islip. Always verify with local authorities before improvements.
Building & site characteristics
From public records
Heating
NONE
Lot
0.03 ac
Current owner
From public records · entity-resolved
TOWN ISLIP
Individual
Free & Clear · 0 yrs held
Mailing address
655 MAIN ST, ISLIP, NY 11751-3651
Mailing matches property
Yes
Owner-occupied
Yes
Ownership since
—
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
No recorded transactions
No recorded transactions found for this property.
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.
Try Rey
Ask anything about this address in plain English.
“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
You own 40 Nassau Ave?
List it free. Reach 20,000 daily buyers.
We’ve already pulled the facts. Confirm photos + price and you’re live in 2 minutes.
List this address →
Full reports are paid
Unlock the full Property Analytics report
Start free for 7 days — no card required. Full owner contacts, all 4 valuations with methodology, refine flow, comparable adjustments, foot-traffic deep dive, export to PDF / CSV.
