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Property profile & analytics
OFF-MARKET
Office buildings
550 Del Rey Ave Sunnyvale, CA 94085-3528
Entity Owned
Free & Clear
Property ID
US09-4943522
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1981
Construction
CONCRETE
Total area
18,480 SF
Lot
1.23 ac (53,622 SF)
Zoning code
M1
APN
165-42-011
UPID
US09-4943522
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
by Request
Owner & transaction history
Apple INC
Apple INC
since 2025
Last sale
$365.0M
4 recorded transactions
Zoning & alternative use
M1 · Sunnyvale, CA
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 Sunnyvale submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Sunnyvale 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 2024Property tax & assessments
Tax year 2024
Tax billed
$79,041
Tax year 2024
Assessed value
$6,760,782
Assessed 2024
Previous assessed
$6,760,782
+0.0% YoY
Effective rate
1.17%
On assessed value
Assessed land
$6,760,782
Applied tax rate
9.0000
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
Year built
1981
Construction
CONCRETE
Heating
NONE
Stories
1
Total area
18,480 SF
Lot
1.23 ac (53,622 SF)
Zoning code
M1
APN
165-42-011
UPID
US09-4943522
Jurisdiction
SANTA CLARA
Zoning & alternative use
M1 · Sunnyvale, CA
Zoning M1 · permitted uses
M1 · Sunnyvale, CA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Sunnyvale. Always verify with local authorities before improvements.
Building & site characteristics
From public records
Year built
1981
Construction
CONCRETE
Heating
NONE
Stories
1
Lot
1.23 ac
Current owner
From public records · entity-resolved
Apple INC
Entity
Free & Clear · 0 yrs held
Mailing address
PO BOX 64733, LOS ANGELES, CA 90064-0733
Ownership since
2025
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
4 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Sep 25, 2025
$365,000,000
Apple INC
Kr 555 Mathilda LLC
Grant Deed
—
Dec 18, 2012
$7,600,000
Kr 555 Mathilda LLC
Sequoia 552 LLC
Grant Deed
$1,357,774 · Kilroy Realty Finance Ptshp LP
Oct 15, 2012
$5,550,000
Sequoia 552 LLC
Silicon Valley Ca-i LLC
Grant Deed
—
—
—
Kr 555 Mathilda LLC
—
Loan Modification
related
$1,607,974 · Kilroy Realty Fin Ptshp LP
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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