Entity Owned 
For Lease
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Contact for pricing
381 Elden St, Herndon, VA 20170
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Property profile
Verified
Property type
Office buildings
Use group
OFFICE BUILDING
Year built
1986
Construction
STEEL FRAME
Total area
184,600 SF
Lot
6.51 ac (283,400 SF)
Zoning code
CO(COMMERCIAL OFFICE)
APN
017-1-02-0006
UPID
US87-0741513
Cap rate & NOI
Priority signal for investors
Implied cap rate, NOI & suggested price
Cap rate vs submarket · NOI estimate · 3 price anchors
Current use
Occupant on record · Public records
-
Federal Government Office
-
Pediatrician Physician
-
Medical Clinic
-
Physician
-
Pediatrician Physician
Location
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
since 2025
Last sale
$8.9M
6 recorded transactions
Zoning & alternative use
CO(COMMERCIAL OFFICE) · Herndon, VA
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
Value estimation
Instant AI valuation built from comps, income signals, and proprietary benchmarks. A defensible range, not a single guess.
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Unlock the complete Valuation workflow
Full NOI reconstruction, selected comps, alternative-use scenarios, data audit and PDF export.
Full NOI build-up · 6 steps
All 8 comparables with addresses
Source audit · 6 inputs
PDF export
Analytics Standard · 5 reports
from $99/month
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Summary
1
Valuation conclusion
Included free
Realmo’s models returned no estimation for this property yet.
2
Subject property
Included free
GBA
184,600 SF
Lot area
6.51 ac
Year built
1986
Stories
4
APN
017-1-02-0006
Zoning
CO(COMMERCIAL OFFICE)
Assessed value
$27,980,490
Annual tax
$431,879
3
Income approach: direct capitalization
Partial preview
Estimated Stabilized NOI, derived from market rent, vacancy and expense benchmarks. Actual property income not reported.
Estimated market rent / SF
Potential gross income
Vacancy allowance
Effective gross income
Benchmark operating expenses
Stabilized NOI
Property tax
$431,879
Selected cap rate
4
Sales comparison
Partial preview
Sales approach indication
$15.50M
Weighted, 8 comps · high confidence
Evidence
8 found · 6 selected
County-verified recorded sales
Comparable
Sale dateSale price$ / SF
13.4 mi away · 135,102 SF
13.9 mi away · 151,935 SF
15.0 mi away · 153,941 SF
16.6 mi away · 239,241 SF
16.6 mi away · 239,241 SF
5
Current market position
Included free
Benchmark
Observed band ($/SF)AverageSubject delta
ZIP 66 sales
$280
-70%
Submarket 170 sales
$290
-71%
County 837 sales
$289
-71%
Band = middle half (Q1–Q3) of recorded sale $/SF for this use type per geography; the diamond marks the subject at $84/SF. Delta below average reads as headroom. Source: Realmo CRE sales derivatives (county records).
6
Data & methodology
Included free
Building area
County record
Property tax
County record
Assessed value
County record
Zoning designation
County record
Operating expenses
Modeled
Market rent
Market benchmark
Not analyzed due to unavailable source data: actual rent roll, tenant leases, physical condition and capital
requirements are outside a desktop analysis.
Cost Approach excluded: income and sales evidence cover the value conclusion.
Automated valuation analysis, not a licensed appraisal. Figures are derived from public
records and proprietary models. Desktop analysis: no physical inspection, tenant leases or reported
property income. Verify with a licensed appraiser before transacting.
Cap rate
Cap rate calculated from real income and expense signals, benchmarked against sales of similar assets nearby.
17% off on annual
Unlock the complete Cap Rate workflow
Full market tables, editable assumptions, comparable evidence, saved work and exports.
9-scenario matrix
Comparable evidence · 8 sales
NOI build-up · 9 steps
Market rates by use type
PDF export
Analytics Standard · 5 reports
from $99/month
from $99/month
Overview
No cap rate is computable for this property yet: no recorded sale, income signal or market-rate row for its use type.
Price sensitivity
The rate is the decision lever; valuation is the consequence.
Test a cap rate
Implied value$10.02M
Move the market yield to see immediate price impact.
Value / SF
$54
Vs. selected
Base
Derivation
NOI ÷ cap
Arithmetic over the derived NOI * — not market scenario modeling.
NOI × cap matrix
Preview
Preview of 9 modeled outcomes.
NOI
5.00%7.00%9.00%
$631k
$12.63M
$9.02M
$7.02M
$702k
$14.03M
$10.02M
$7.80M
$772k
$15.44M
$11.03M
$8.58M
NOI sensitivity ±10% across the 5 / 7 / 9% anchors — derivation of the NOI above.
Comparable evidence
Partial preview
Recorded sales nearby
8 found
High confidence · county-verified
Closest comparable
$37.00M
9.2 mi · Sep 2025 · $183/SF
Property tax & assessments
Tax year 2024Property tax & assessments
Tax year 2024
Tax billed
$431,879
Tax year 2024
Assessed value
$27,980,490
Assessed 2024
Previous assessed
$28,929,450
-3.3% YoY
Effective rate
1.54%
On assessed value
Assessed land
$3,861,600
Assessed improvement
$24,118,890
Land market value
$3,861,600
Improvement market value
$24,118,890
Total market value
$27,980,490
Automated cap rate analysis. Based on public records, market benchmarks and proprietary
models. Verify with a licensed professional before transacting.
Property description
Physical attributes from public recordsBuilding & lot
Public records
Property type
Office buildings
Use group
OFFICE BUILDING
Status
For Lease
Year built
1986
Construction
STEEL FRAME
Heating
OTHER
Cooling
YES
Stories
4
Total area
184,600 SF
Lot
6.51 ac (283,400 SF)
Zoning code
CO(COMMERCIAL OFFICE)
APN
017-1-02-0006
UPID
US87-0741513
Jurisdiction
FAIRFAX
Metro division
WASHINGTON-ARLINGTON-ALEXANDRIA, DC-VA-MD-WV METROPOLITAN DIVISION
Zoning & alternative use
CO(COMMERCIAL OFFICE) · Herndon, VAZoning CO(COMMERCIAL OFFICE) · permitted uses
CO(COMMERCIAL OFFICE) · Herndon, VA
Permitted & conditional uses
Allowed uses · Special-permit conditions · Prohibited uses
Building & site characteristics
From public records
Year built
1986
Construction
STEEL FRAME
Heating
OTHER
Cooling
Yes
Stories
4
Lot
6.51 ac
Zoning
The recorded zoning designation, what the district officially allows, and the municipal source it comes from.
Zoning designation
County-recorded code
CO(COMMERCIAL OFFICE)
Jurisdiction
Herndon, VA
Recorded code
CO(COMMERCIAL OFFICE)
Ownership Intelligence
Find the owner behind the property.
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What opens after registration
Ownership report
Owner identityResolved entity and name variants
Portfolio holdingsLinked properties and estimated value
Deal signalsSell-side activity worth following
Debt & historyRecorded loans and transaction history
Private report access
See the ownership record for this address.
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Owner of record and activity signals are derived from public records and modeled classifications.
They do not confirm beneficial ownership or intent to transact.
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