Herndon Square II Building D

510 Spring St., Herndon, VA 20170

Property Information

  • For Lease $24.00/SF/YR
  • Property Type Office - Government Office
  • Property Size 61,981 SF
  • Units 9
  • Lot Size 4.5 Acre
  • Parking Spaces Avail. 260
  • Parking Ratio 4.41 / 1,000 SF
  • Property Tenancy Multi-Tenant
  • Building Class B
  • Year Built 1999
  • Year Renovated 2014
  • Date Updated Jun 17, 2026

Description

Set in the heart of Herndon, VA, Herndon Square Office Space offers an unparalleled location for office, institutional, and governmental investors and tenants looking to establish a strategic presence in the Washington, D.C. market. The property boasts various amenities, including the renowned Reston Town Center, the Herndon Centennial Golf Course, and proximity to Washington Dulles International Airport. With its proximity to major corporations and government agencies, this prime location provides an exceptional opportunity for those seeking to tap into the thriving commercial landscape of the nation's capital.K&M Commercial Real Estate invites you to discover the exceptional features of this prime property at 510 Spring St. It offers the competitive advantage of below-market asking rents, making it an attractive opportunity for prospective tenants. With the potential for building signage, tenants can enhance their visibility and brand presence. The generous parking ratio of 4.4/1,000 SF ensures convenient and ample parking for employees and visitors. Additionally, the property's proximity to the Silver Line Metro, along with its adjacency to the W&OD Hike & Bike Trail, provides accessibility and connectivity for occupants. Tenants will appreciate the added convenience of 24/7 access, key card security, and on-site men's and women's locker rooms and showers, further enhancing the appeal of this space for discerning lessees.

Highlights

  • 24/7 Access, Key Card Secured
  • Below Market Asking Rents
  • Building Signage Potential
  • Men's & Women's Locker Rooms/Showers
  • Parking ratio 4.4/1,000 SF
  • Within 1 mile of Silver Line Metro - Adjacent to the W&OD hike & bike trail

4 Spaces Available

100

Space Type

General Office

Lease Rate

$24.00/SF/YR

Total Space

6,593 SF

Floor

1st

Divisible Space

6,593 - 11,807 SF

Available Date

Immediate

Lease Type

Full Service

Renewal Option

Yes

Sublease

No

The existing space was built out for Inovalon. The suite has an open floor plan for cubicles and offices, a kitchen, and a private bathroom.

100B

Space Type

General Office

Lease Rate

$24.00/SF/YR

Total Space

5,214 SF

Floor

1st

Divisible Space

5,214 - 11,807 SF

Available Date

Immediate

Lease Type

Full Service

Renewal Option

Yes

Sublease

No

Suite 200

Space Type

General Office

Lease Rate

$24.00/SF/YR

Total Space

20,789 SF

Floor

2nd

Divisible Space

20,789 - 26,390 SF

Available Date

Immediate

Lease Type

Full Service

Renewal Option

Yes

Sublease

No

This 891 sq ft facility features a comprehensive layout, including conference rooms, a full-size break room, a generously sized IT room with dedicated air conditioning, and designated SCIF space. The SCIF, constructed to the 705 standard, comprises two sections: a smaller room, currently DCSA-certified for Secret Storage, and a larger area formerly NSA-accredited as a SCIF (last active in 2015). As of April 2024, the SCIF is inactive and no longer accredited. While reactivation is possible, updated standards require modifications to bring it back into compliance.

Suite 240

Space Type

General Office

Lease Rate

$24.00/SF/YR

Total Space

4,766 SF

Floor

2nd

Divisible Space

4,766 - 25,555 SF

Available Date

Immediate

Lease Type

Full Service

Renewal Option

Yes

Sublease

No

Suite 240 was previously a NOC (Network Operating Center), operating 24/7 with a server room. The suite features multiple conference rooms and an open cubicle area.

Contacts

Location

Contact Listing Broker
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