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Property profile & analytics
OFF-MARKET
Estimated value
$2,860,000
Office Spaces
156 William St S3, New York, NY 10038-2609
Entity Owned
4-yr Hold
~
Est. High Equity
Property ID
US63-5165014
Property profile
Verified
Property type
Office Spaces
Use group
CONDOMINIUM OFFICES
Year built
1955
Total area
8,690 SF
Lot
0.44 ac (19,103 SF)
Zoning code
C6-4
APN
00093-1004
UPID
US63-5165014
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
-
Home Renovation NYC Construction Company General Contractor
-
Devonshire Claims Services Inc Insurance Agency
-
J R Brodsy Associates Insurance Agency
-
David J. Phillips, M.D. Physician Medical Clinic
-
Presbyterian Downtown Hospital Hospital
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
by Request
Comparable Approach
Comparable
by Request
Blend (final)
Blend
$2.86M
Owner & transaction history
Phc William Street Condo, LLC · 4 yrs held
Phc William Street Condo, LLC
since 2021
7 recorded transactions
Zoning & alternative use
C6-4 · New York, 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 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
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
APARTMENT HOUSE (5+ UNITS)
$4,700,000
Change: -15% · Conversion: Easy
Blend value · Realmo final
$2.86M
Range $2.57M – $3.15M · ±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
$329 / 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
$87,205
Tax year 2024
Assessed value
$908,722
Assessed 2024
Previous assessed
$902,461
+0.7% YoY
Effective rate
9.60%
On assessed value
Assessed land
$124,710
Assessed improvement
$784,012
Land market value
$255,713
Improvement market value
$1,573,871
Total market value
$1,829,584
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 Spaces
Use group
CONDOMINIUM OFFICES
Status
Off-Market
Year built
1955
Heating
NONE
Buildings
1
Stories
12
Units
1
Total area
8,690 SF
Lot
0.44 ac (19,103 SF)
Zoning code
C6-4
APN
00093-1004
UPID
US63-5165014
Jurisdiction
NEW YORK(MANHATTAN)
Metro division
NEW YORK-WHITE PLAINS-WAYNE, NY-NJ METROPOLITAN DIVISION
Zoning & alternative use
C6-4 · New York, NY
Zoning C6-4 · permitted uses
C6-4 · 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
APARTMENT HOUSE (5+ UNITS)
Est. value
$4.7M
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
1955
Heating
NONE
Stories
12
Buildings
1
Units
1
Lot
0.44 ac
Current owner
From public records · entity-resolved
Phc William Street Condo, LLC
Entity
Mailing address
251 LITTLE FLS DR, WILMINGTON, DE 19808-1674
Ownership since
2021
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
7 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Jul 14, 2021
—
Phc William Street Condo, LLC
Blue School Real Estate LLC
Deed
—
Jun 24, 2021
$20,000,000
Phc William Street Condo, LLC
Blue School Real Estate LLC
Deed
—
Oct 2, 2018
—
Blue School Real Estate LLC
—
Grant Deed
related
$4,160,000 · Build Nyc Rsrc Corp
Apr 20, 2018
—
Blue School Real Estate LLC
—
Loan Modification
related
$24,650,000 · Us Bk
—
—
156 William Street Owner LLC
—
Deed Of Trust
related
$46,500,000 · Manufacturers & Traders Tr
—
—
Blue School Real Estate LLC
—
Loan Modification, Consolidation And Extension
related
$20,470,000 · * Other Institutional Lenders
—
—
Blue School Real Estate LLC
—
Loan Modification
related
$10,791,333 · Us Bk
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
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“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
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