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Property profile & analytics
OFF-MARKET
Estimated value
$7,665,000
Office buildings
507-511 Flatbush Ave Brooklyn, NY 11225
Entity Owned
17-yr Hold
Free & Clear
Property ID
US63-0930921
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING (MULTI-STORY)
Year built
1930
Total area
29,000 SF
Lot
0.23 ac (10,115 SF)
Zoning code
C8-2
APN
01197-0001
UPID
US63-0930921
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
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
by Request
Blend (final)
Blend
$7.67M
Owner & transaction history
Petrina Holdings LLC · 17 yrs held
Petrina Holdings LLC
since 2009
1 recorded transaction
Zoning & alternative use
C8-2 · Brooklyn, 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 Brooklyn submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Brooklyn 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
$264 / 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
$163,611
Tax year 2024
Assessed value
$1,805,850
Assessed 2024
Previous assessed
$1,599,750
+12.9% YoY
Effective rate
9.06%
On assessed value
Assessed land
$136,350
Assessed improvement
$1,669,500
Land market value
$303,000
Improvement market value
$3,710,000
Total market value
$4,013,000
Applied tax rate
4.0000
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 (MULTI-STORY)
Status
Off-Market
Year built
1930
Heating
NONE
Buildings
1
Stories
3
Units
6
Total area
29,000 SF
Lot
0.23 ac (10,115 SF)
Zoning code
C8-2
APN
01197-0001
UPID
US63-0930921
Jurisdiction
KINGS(BROOKLYN)
Metro division
NEW YORK-WHITE PLAINS-WAYNE, NY-NJ METROPOLITAN DIVISION
Zoning & alternative use
C8-2 · Brooklyn, NY
Zoning C8-2 · permitted uses
C8-2 · Brooklyn, NY
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Brooklyn. Always verify with local authorities before improvements.
Building & site characteristics
From public records
Year built
1930
Heating
NONE
Stories
3
Buildings
1
Units
6
Lot
0.23 ac
Current owner
From public records · entity-resolved
Petrina Holdings LLC
Entity
Free & Clear · 17 yrs held
Mailing address
403 HBR CV, PIERMONT, NY 10968-1086
Ownership since
2009
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
Mar 20, 2009
—
Petrina Holdings LLC
Pat-rich Associates
Grant 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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“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
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