ADU & Backyard Home Builder in Fauquier County
Fauquier County permits one accessory dwelling per single-family home in most rural and residential districts — interior, attached, over an outbuilding, or fully detached — generally capped at about 800 sq ft (up to 1,000 sq ft on 5-plus acre RA/RC lots, and larger for certain pre-2013 conversions), limited to two bedrooms. Health Department approval is required on septic. SB 531 confirms by-right ADUs statewide on July 1, 2027 and caps the permit fee at $500.
Building an ADU on Fauquier hunt-country land
Fauquier's larger rural lots are well suited to a detached backyard home, and the county already allows freestanding units in most districts. The usual gating items are the size cap tied to lot size, two-bedroom limits, and septic capacity — a drainfield review comes early. As hunt-country builders, we know Fauquier's rural and design expectations firsthand.
How we build backyard homes in Fauquier County
Start with a free Quick-Fit Check. If your lot is a candidate, our Readiness Assessment maps your path, then we design, permit, and build — one accountable team. A Hearthstone Design Build brand.
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See also: all Virginia counties · ADU cost · financing
See what your Fauquier County lot can do.
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