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Property profile & analytics
OFF-MARKET
Estimated value
$102,460,000
Office buildings
520-530 135th St New York, NY 10031
Entity Owned
2-yr Hold
Free & Clear
Property ID
US63-4245650
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING (MULTI-STORY)
Year built
1915
Total area
43,000 SF
Lot
0.37 ac (15,987 SF)
Zoning code
R8A
APN
01988-0053
UPID
US63-4245650
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
$102.46M
CAP Approach
CAP
by Request
Comparable Approach
Comparable
by Request
Blend (final)
Blend
$102.46M
Owner & transaction history
Bldg Holdings II LLC · 2 yrs held
Bldg Holdings II LLC
since 2024
Last sale
$102.5M
3 recorded transactions
Zoning & alternative use
R8A · New York, NY
Permitted uses
Permitted uses
Allowed · conditional · prohibited
Top alternative use upside
Auto repair, garage
$99.4M
+261.9%
Industrial (general)
$88.9M
+223.7%
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 New York submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs New York 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
$102,460,000
ML approach
$102,460,000
CAP Approach
CAP Return
Estimation
6%
by Request
6.5%
by Request
7%
by Request
Alternative Use
Use
Estimation
AUTO REPAIR, GARAGE
$99,390,000
Change: +262% · Conversion: Difficult
INDUSTRIAL (GENERAL)
$88,920,000
Change: +224% · Conversion: Difficult
Blend value · Realmo final
$102.46M
Range $92.21M – $112.71M · ±10% · vs last sale $102.46M (Jan 31 2024)
Last sale anchor
$102.46M
Jan 31 2024
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
$2,383 / 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
$368,538
Tax year 2024
Assessed value
$3,665,300
Assessed 2024
Previous assessed
$3,447,450
+6.3% YoY
Effective rate
10.05%
On assessed value
Assessed land
$313,200
Assessed improvement
$3,352,100
Land market value
$696,000
Improvement market value
$7,036,000
Total market value
$7,732,000
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
1915
Heating
NONE
Buildings
1
Stories
3
Units
1
Total area
43,000 SF
Lot
0.37 ac (15,987 SF)
Zoning code
R8A
APN
01988-0053
UPID
US63-4245650
Jurisdiction
NEW YORK(MANHATTAN)
Metro division
NEW YORK-WHITE PLAINS-WAYNE, NY-NJ METROPOLITAN DIVISION
Zoning & alternative use
R8A · New York, NY
Zoning R8A · permitted uses
R8A · New York, NY
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
New York. Always verify with local authorities before improvements.
Alternative use value scenarios
Repositioning upside vs current use
AUTO REPAIR, GARAGE
Est. value
$99.4M
INDUSTRIAL (GENERAL)
Est. value
$88.9M
AUTO REPAIR, GARAGE
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
1915
Heating
NONE
Stories
3
Buildings
1
Units
1
Lot
0.37 ac
Current owner
From public records · entity-resolved
Bldg Holdings II LLC
Entity
Free & Clear · 2 yrs held
Mailing address
417 5TH AVE FL, NEW YORK, NY 10016-2204
Ownership since
2024
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
Jan 31, 2024
$102,460,000
Bldg Holdings II LLC
Dorian S Goldman
Deed
—
Jan 9, 2024
—
Bldg 520 West 135th Street LLC
I Bldg Co., INC.
Deed
—
Aug 7, 2020
—
I Bldg Co INC
Dupont Associates INC
Quit Claim 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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