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Property profile & analytics
OFF-MARKET
Estimated value
$10,890,000
Office buildings
288 Sunnyvale Ave Sunnyvale, CA 94086
Individually Owned
1-yr Hold
Free & Clear
Property ID
US09-2748822
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1978
Construction
WOOD
Total area
27,000 SF
Lot
0.47 ac (20,363 SF)
Zoning code
C3
APN
209-10-061
UPID
US09-2748822
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
$10.72M
CAP Approach
CAP
$9.85M
Comparable Approach
Comparable
by Request
Blend (final)
Blend
$10.89M
Owner & transaction history
Silicon Valley Clean Energy · 1 yrs held
Silicon Valley Clean Energy
since 2025
Last sale
$11.5M
7 recorded transactions
Zoning & alternative use
C3 · 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
Method
Estimation
Statistic approach
by Request
ML approach
$10,715,000
CAP Approach
CAP Return
Estimation
6%
$10,670,000
6.5%
$9,850,000
7%
$9,145,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$17,020,000
Current use
RETAIL STORES
$14,695,000
Change: -14% · Conversion: Moderate
Blend value · Realmo final
$10.89M
Range $9.80M – $11.98M · ±10% · vs last sale $11.50M (Feb 24 2025)
Last sale anchor
$11.50M
Feb 24 2025
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
$403 / 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 2022Property tax & assessments
Tax year 2022
Assessed value
$13,446,360
Assessed 2023
Previous assessed
$11,118,000
+20.9% YoY
Assessed land
$5,306,040
Assessed improvement
$8,140,320
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
1978
Construction
WOOD
Heating
NONE
Cooling
YES
Stories
2
Total area
27,000 SF
Lot
0.47 ac (20,363 SF)
Zoning code
C3
APN
209-10-061
UPID
US09-2748822
Jurisdiction
SANTA CLARA
Zoning & alternative use
C3 · Sunnyvale, CA
Zoning C3 · permitted uses
C3 · 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.
Alternative use value scenarios
Repositioning upside vs current use
OFFICE BUILDING Current
Est. value
$17.0M
RETAIL STORES
Est. value
$14.7M
OFFICE BUILDING Current
RETAIL STORES
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
1978
Construction
WOOD
Heating
NONE
Cooling
Yes
Stories
2
Lot
0.47 ac
Current owner
From public records · entity-resolved
Silicon Valley Clean Energy
Individual
Free & Clear · 1 yrs held
Mailing address
339 S SAN ANTONIO RD STE 2B, LOS ALTOS, CA 94022-3699
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
7 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Feb 24, 2025
$11,500,000
Silicon Valley Clean Energy
Ssa 65 Owner LLC
Grant Deed
—
May 27, 2022
—
Ssa 65 Owner LLC
—
Deed
related
$15,566,032 · Wells Fargo Bank NA
Mar 17, 2021
$10,900,000
Ssa 65 Owner LLC
Hai Ran Chang
Grant Deed
—
Dec 2, 2020
—
Haiyun Chang Charitable Trust
Chang Living Trust
Quit Claim Deed
related
—
Mar 11, 2019
—
Chang Living Trust
Change,yun S
Affidavit Of Death
related
—
Oct 15, 1998
—
Chang Trust
De Anza Building LP
Grant Deed
related
—
—
—
Deanza Building
—
Deed Of Trust
related
$935,000 · Sumitomo Bank
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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