Financial
Distress signals
Property profile

510 Spring St Herndon, VA 20170

FOR LEASE
Office buildings
Property ID
US87-3656991
61,981 SF 4.5 ac lot Built 1999
Last sale Nov 2020 · $6,500,000
Entity Owned Owner of record is a legal entity (LLC / corporation). 5-yr Hold Held for 5 years. Absentee Owner Owner mailing address differs from the property address. Free & Clear No active or open recorded mortgage detected.
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Property summary

AI-generated overview

An office building located in Herndon, Virginia, within about 1 mile of the Fairfax County Parkway and the Dulles Toll Road. The building contains approximately 26,390 square feet of office space and is described as having Class B amenities. It offers ample parking with a ratio of about 4.4 spaces per 1,000 square feet and provides potential for building signage. The property includes an on-site backup generator and supports 24/7 access through key card security. Locker rooms and showers are

Ownership intelligence

Who controls the opportunity?

Resolved identity, portfolio, hold profile and investor signals. Included in the full report.

Owner contacts

Can we reach the decision maker?

Skip-traced phones and e-mails of the owner. Included with the full report.

Mortgages

What is owed, to whom, and when it comes due

Recorded lenders, amounts and estimated maturities of the owner's loan book — in the full report.

Property tax · 2024

What does the county charge?
$80k
Tax billed · 2024
Assessed value$4.71M
Assessed land$1.24M
Assessed improvement$3.47M
Effective rate1.70%

Value estimate

· Sep 2026
$6.19M
$5.57M – $6.80M
AI approach$6.27M
Sales comparison$8.85M
NOI build-up
Gross scheduled income$1.83M
Vacancy & credit loss−$265k
Operating expenses−$391k
NOI · 4,888,675.00% cap applied$1.17M

Realmo valuation models over county records and 3 qualifying comparable sales.

Recently sold

What actually traded nearby?
$280/SF
ZIP average, outlier-cleaned · 66 recorded sales of this use type
Observed band · Q1–Q3$230 – $346
Qualifying comparables3

Cap rate analysis

How does the asset earn?
4,888,675.00%
$1.17M estimated NOI · market benchmarks for this use type

Price anchors at 6 / 6.5 / 7% — in the full report.

Zoning insight

What can be built here?
O&L I(OFFICE &LIGHT INDUS
JurisdictionFAIRFAX

Location intelligence

Which uses thrive at this corner?
Best fit: Electrical Service
Demand heat for this use is drawn on the map · LocInt grid
Demand index
Electrical Service10.3
Storage Facility10.3
Tailor Shop10.3

Location

510 Spring St Herndon, VA 20170
County assessor Recorded deeds · 3 transfers 3 qualifying comp sales Zoning catalog

Every figure names its source: public record, benchmark, or modeled. Coverage varies by property — thin data is stated as missing, never invented.

Comparables

6 recorded sales · 16 properties nearby
Recent sales nearby
6 recorded sales in this ZIP, last 8 years
Address Sale price Sold Size
503 Carlisle, Herndon, VA 20170-4883 $4,150,000 Jun 2023 26,997 SF
194 Van Buren, Herndon, VA 20170 $14,179,200 Aug 2022 107,898 SF
196 Van Buren, Herndon, VA 20170-5346 $17,820,800 Aug 2022 107,898 SF
560 Herndon, Herndon, VA 20170-5286 $41,250,000 Jul 2021 52,528 SF
365 Herndon, Herndon, VA 20170-5613 $11,000,000 May 2021 53,912 SF
460 Springpark, Herndon, VA 20170-5272 $20,375,000 Feb 2021 63,912 SF
Sale prices and dates as our records hold them, one row per building. A deed can cover more of a building than the size shown, so read the price against the size rather than dividing one by the other.
Comparable nearby
6 properties of the same type nearby
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“Is 15.6% cap rate sustainable?” · “Best tenant mix for BU1?” · “What’s the redev upside?”
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