Back to Search
Property profile & analytics
OFF-MARKET
Estimated value
$23,360,000
Office buildings
3620 Joseph Siewick Dr Fairfax, VA 22033-1756
Entity Owned
14-yr Hold
~
Est. High Equity
Property ID
US87-1356275
Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Total area
102,882 SF
Lot
1.55 ac (67,670 SF)
Zoning code
C-3(OFFICE)
APN
045-2-01-0041-L3
UPID
US87-1356275
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
-
Lab Corporation Medical Laboratory
-
Tracy E. Boles, DPT Physician
-
Brittany L. Clements, PT Physician
-
Schou Lillemour Physician
-
Ketan K. Trivedi, MD, FACC Physician
Value estimations
Realmo proprietary · 4 methods
AI Approach
AI
by Request
CAP Approach
CAP
$31.96M
Comparable Approach
Comparable
by Request
Blend (final)
Blend
$23.36M
Owner & transaction history
Sp II Fairfax LLC · 14 yrs held
Sp II Fairfax LLC
since 2012
2 recorded transactions
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
Method
Estimation
Statistic approach
by Request
ML approach
by Request
CAP Approach
CAP Return
Estimation
6%
$34,625,000
6.5%
$31,960,000
7%
$29,675,000
Alternative Use
Use
Estimation
OFFICE BUILDING
$38,845,000
Current use
NEIGHBORHOOD: SHOPPING CENTER
$37,930,000
Change: -2% · Conversion: Difficult
INDUSTRIAL (GENERAL)
$34,995,000
Change: -10% · Conversion: Difficult
AUTO REPAIR, GARAGE
$34,350,000
Change: -12% · Conversion: Difficult
Blend value · Realmo final
$23.36M
Range $21.02M – $25.70M · ±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
$227 / 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
$264,306
Tax year 2024
Assessed value
$20,592,580
Assessed 2024
Previous assessed
$21,543,180
-4.4% YoY
Effective rate
1.28%
On assessed value
Assessed land
$2,256,250
Assessed improvement
$18,336,330
Land market value
$2,256,250
Improvement market value
$18,336,330
Total market value
$20,592,580
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
Heating
NONE
Stories
4
Total area
102,882 SF
Lot
1.55 ac (67,670 SF)
Zoning code
C-3(OFFICE)
APN
045-2-01-0041-L3
UPID
US87-1356275
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.
Alternative use value scenarios
Repositioning upside vs current use
OFFICE BUILDING Current
Est. value
$38.8M
NEIGHBORHOOD: SHOPPING CENTER
Est. value
$37.9M
INDUSTRIAL (GENERAL)
Est. value
$35.0M
AUTO REPAIR, GARAGE
Est. value
$34.4M
OFFICE BUILDING Current
NEIGHBORHOOD: SHOPPING CENTER
INDUSTRIAL (GENERAL)
AUTO REPAIR, GARAGE
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
Heating
NONE
Stories
4
Lot
1.55 ac
Current owner
From public records · entity-resolved
Sp II Fairfax LLC
Entity
Mailing address
PO BOX 92129, SOUTHLAKE, TX 76092-0102
Ownership since
2012
Owner contacts — direct phone, email, and related entities
Decision-maker phone · Verified email · Related entities & filings
Owner contacts
Email · phone · related entities
Sales History
2 recorded events · public records
Date
Price
Buyer
Seller
Deed Type
Mortgage
Apr 13, 2012
—
Sp II Fairfax LLC
—
Deed Of Trust
related
$19,500,000 · Regions Bank
Apr 14, 2010
—
Sp II Fairfax LLC
—
Deed Of Trust
related
$17,300,000 · Middleburg 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.
Try Rey
Ask anything about this address in plain English.
“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
You own 3620 Joseph Siewick Dr?
List it free. Reach 20,000 daily buyers.
We’ve already pulled the facts. Confirm photos + price and you’re live in 2 minutes.
List this address →
Full reports are paid
Unlock the full Property Analytics report
Start free for 7 days — no card required. Full owner contacts, all 4 valuations with methodology, refine flow, comparable adjustments, foot-traffic deep dive, export to PDF / CSV.
