UNISON HISTORIC DISTRICT NOMINATIONS

Unison’s Historic Districts

Understanding the village, battlefield, and proposed County overlay

Unison is recognized through two established state and federal historic districts:

The Unison Historic District, centered on the village, and
The much larger Unison Battlefield Historic District.

Loudoun County is also considering a separate local Historic Overlay District. Each designation serves a different purpose and has different implications for property owners.

What Prospective Residents Need to Know About Unison

Unison and the Unison Battlefield are listed on the National Register of Historic Places. Inclusion on the National Register of Historic Places provides important recognition of the historic significance of Unison and the Unison Battlefield.

Unison village and the Unison Battlefield are also listed on the Virginia Landmarks Registry [https://www.dhr.virginia.gov/historic-registers/053-0692/]. These federal and state designations protect Unison's historic buildings and countryside from certain federal and state actions, but they do not impose any restrictions on private development, alteration, or demolition.

Unison is working with Loudoun County to protect Unison's historic character and resources by establishing a County Historic Overlay District. Following approval of the Unison Historic Overlay District, property owners will be required to obtain a "Certificate of Appropriateness" from the county's Historic District Review Committee before completing major additions, exterior modifications, or demolitions.

Approval of the Unison Historic Overlay District is expected by the end of calendar year 2026. FAQs about Loudoun County Historic Overlay districts can be found here [https://www.loudoun.gov/m/faq?catx#question-431].

Prospective residents should also be aware that, like many other communities in western Loudoun County, Unison properties can face serious well and septic challenges — this is especially true of properties on smaller lots in the historic village. Read "Well, Well, Well" in our latest newsletter. We recommend that people considering buying a property in Unison or its environs exercise a high degree of diligence to understand the conditions and potential challenges at that property.

Finally, prospective residents can be assured that the Unison community is passionate about preservation and welcomes new members to our close-knit, mutually supportive rural community.

Proposed County Historic Overlay District

Loudoun County is currently considering a local Historic Overlay District for Unison and developing associated design guidelines. The proposed district has not yet been adopted.

The County will hold a community meeting on Tuesday, September 22, 2026, at 6:30 p.m. at the Unison Store. Residents and property owners may review the proposal, examine the proposed boundary, and submit comments through the County’s project page.

Historic overlay districts are subject to specific land use regulations via the county’s Zoning Ordinance and have architectural or design guidelines to help protect the historic character of these culturally significant communities. The establishment of an historic overlay district and the associated guidelines are meant to preserve the village’s character, managing growth while allowing for compatible development in the years to come

View the County Project

Three Historic Designations

Unison Historic District — Village

The Unison Historic District covers approximately 70 acres centered on the crossroads of Unison and Bloomfield Roads. It includes about twenty properties and documents Unison as one of Loudoun County’s best-preserved rural villages.

The settlement developed from land acquired by William Galliher in 1802. Part of the property was divided into half-acre lots in 1812, when the community was known as Greenville. The Virginia General Assembly formally established a twenty-acre town named Union in 1813. It was later renamed Unison.

During the early and mid-nineteenth century, Unison served the surrounding agricultural community as a residential, commercial, religious, educational, and social center. Its distance from railroads and major highways limited later growth but also helped preserve its historic character.

The district was recognized for its architectural significance, with a period of significance extending from 1802 through 1952. The nomination identifies 44 contributing resources, including residences, domestic and agricultural outbuildings, the Methodist church, former school, Unison Store, and former saddle-maker’s shop.

Its buildings represent vernacular, Federal, Greek Revival, Italianate, Queen Anne, and Craftsman traditions and commonly employ stone, brick, log, and wood-frame construction.

Read the Village Nomination PDF

Official DHR Record

Unison BATTLEFIELD HISTORIC District

The battlefield district recognizes the landscape associated with the Battle of Unison, fought November 1–3, 1862. Its significance includes Civil War history, archaeological resources, historic roads, stone walls, farmsteads, waterways, fields, and viewsheds.

The village district lies within this much larger battlefield district. State and federal registration does not, by itself, impose local design controls on private property.

Official DHR Record

The Unison Battlefield Historic District encompasses approximately 8,000 acres extending through southwestern Loudoun and northern Fauquier counties. It reaches from the Philomont area through Unison toward Upperville and the historic Ashby’s Gap Turnpike.

The district commemorates the Battle of Unison, a series of cavalry engagements fought from November 1 through November 3, 1862. Confederate cavalry commanded by Maj. Gen. J. E. B. Stuart repeatedly delayed Union cavalry under Brig. Gen. Alfred Pleasonton as it led Maj. Gen. George B. McClellan’s Army of the Potomac south through the Loudoun Valley.

The nomination connects this delay and McClellan’s failure to execute President Abraham Lincoln’s military plan with Lincoln’s decision to remove McClellan from command on November 5.

The battlefield was recognized as nationally significant for its association with Civil War military history and for its archaeological value. Its surviving landscape includes rolling fields, stream valleys, historic farmsteads, old road alignments, dry-laid stone walls, and the ford across the North Fork of Beaverdam Creek.

At the time of the 2011 nomination, more than half of the battlefield district’s acreage was protected by conservation easements. The nomination describes the district as retaining exceptional integrity despite its location in a rapidly developing region.

Read the Battlefield Nomination PDF

NEW Proposed Loudoun County Historic Overlay District

Local zoning overlay
Status: Proposed and under County review

The proposed County Historic Overlay District is separate from the existing state and federal listings. If adopted, it would establish a local review process intended to protect the village’s historic character while allowing compatible development.

The overlay would not replace a property’s underlying zoning. It would add historic-design review for certain work within the adopted district boundary.

Follow the County Process

What the Designations Mean

Do the existing state and federal listings restrict private property?

Not by themselves. Listing on the Virginia Landmarks Register or National Register of Historic Places recognizes a place’s historic importance.

Certain projects involving federal or state agencies, funding, licenses, permits, or approvals may be subject to historic-resource review. Registration alone, however, does not prohibit a private owner from altering, developing, or demolishing property using private funds and without qualifying government involvement.

Is the County Historic Overlay District already in effect?

No. The Unison Historic Overlay District remains a proposal undergoing County review, development of design guidelines, and public engagement.

Until an overlay district is formally adopted, it does not create a new Certificate of Appropriateness requirement for properties within the proposed boundary.

What could change if the County overlay is adopted?

Property owners within the adopted boundary could be required to obtain a Certificate of Appropriateness before undertaking certain work, including:

New construction
Additions to existing buildings
Changes to exterior materials
Reconstruction or relocation
Partial or complete demolition

Under Loudoun County’s current historic-district procedures, some minor work may be reviewed administratively. Repainting, interior alterations, and replacement of existing materials in kind generally do not require a Certificate of Appropriateness. The final requirements for Unison will depend on the ordinance and design guidelines ultimately adopted by the County.

Learn About Certificates of Appropriateness

Learn More and Participate

You can follow the application's progress in the County's land application system [https://www.loudoun.gov/3362/Land-Application-Information-Comments].

Preserving Unison’s historic character depends on informed residents, thoughtful property stewardship, and community participation.

Follow the Historic Overlay Project

See the Piedmont Environmental Council's Rural Landowner Manual [https://pecva.org/land-conservation/rural-landowner-manual-a-resource-guide-for-the-northern-piedmont/].

Follow and Explore Unison History

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