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Property profile & analytics
OFF-MARKET
Office buildings
3580 Joseph Siewick Dr Fairfax, VA 22033-1717
Entity Owned
Absentee Owner
Free & Clear
Property ID
US87-2395318
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Zoning code
C-3(OFFICE)
APN
045-2-01-0041-L8
UPID
US87-2395318
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
-
Reston Ear Nose and Throat Physician Medical Clinic
-
Life with Cancer Therapist-Maureen Medical Clinic Hospital
-
Inova Schar Cancer Institute - Fair Oaks Medical Clinic Hospital
-
Inova Fairfax West Infusion Center Medical Clinic Hospital
-
Center for Advanced Radiation Oncology - Inova Fair Oaks Hospital Medical Clinic 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
by Request
Owner & transaction history
INOVA HEALTH CARE SERVICES
INOVA HEALTH CARE SERVICES
Zoning & alternative use
C-3(OFFICE) · Fairfax, VA
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 Fairfax submarket · NOI estimate · Typical band, median & reading
Implied cap rate, NOI & submarket benchmark
Cap vs Fairfax 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
$46,337
Tax year 2024
Assessed value
$3,610,180
Assessed 2024
Previous assessed
$4,183,400
-13.7% YoY
Effective rate
1.28%
On assessed value
Assessed improvement
$3,610,180
Improvement market value
$3,610,180
Total market value
$3,610,180
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 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
Zoning code
C-3(OFFICE)
APN
045-2-01-0041-L8
UPID
US87-2395318
Jurisdiction
FAIRFAX
Metro division
WASHINGTON-ARLINGTON-ALEXANDRIA, DC-VA-MD-WV METROPOLITAN DIVISION
Zoning & alternative use
C-3(OFFICE) · Fairfax, VA
Zoning C-3(OFFICE) · permitted uses
C-3(OFFICE) · Fairfax, VA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Permitted & conditional uses
Allowed · special-permit conditions · prohibited
Fairfax. Always verify with local authorities before improvements.
Current owner
From public records · entity-resolved
INOVA HEALTH CARE SERVICES
Individual
Free & Clear · 0 yrs held
Mailing address
8095 INNOVATION PARK DR, FAIRFAX, VA 22031-4868
Mailing matches property
Different — outreach signal
Owner-occupied
No
Ownership since
—
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
No recorded transactions
No recorded transactions found for this property.
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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