Urbanna

Middlesex County does NOT maintain a standalone accessory-dwelling-unit ordinance with dedicated definitional and dimensional standards. ADUs in Middlesex County are regulated indirectly through the Zoning Ordinance's treatment of 'accessory use,' 'accessory structure,' 'guest house / guest cottage,' and 'family-occupied second dwelling' in combination with the per-district use schedules. In the A-R Agricultural / Rural Residential district, which covers the majority of county acreage outside the village / waterfront clusters, a 'family-member dwelling' or farm-labor tenant dwelling is typically permitted subject to minimum lot area (commonly 2 to 5 acres depending on the specific allowance), demonstrated agricultural or family-member use, and Zoning Administrator approval; a fully independent second dwelling for non-family occupancy typically requires a Special Use Permit from the Board of Supervisors after Planning Commission recommendation. In the R-1 Limited Residential and R-2 General Residential districts (which cover the concentrated waterfront residential areas around Deltaville, Stingray Point, Hartfield, Topping, and the Rappahannock / Piankatank frontage more broadly), a 'guest cottage' or detached accessory structure without independent kitchen facilities is generally permitted as a by-right accessory structure subject to setback, height, and lot-coverage standards; a second independent dwelling on the same waterfront parcel requires an SUP and typically encounters Chesapeake Bay Preservation District RPA-buffer constraints that make siting difficult. In the V-C Village Center and W-C Waterfront Commercial districts, mixed-use and limited residential-above-commercial configurations may be permitted by right or by SUP depending on the specific use. Applicants should confirm current ordinance text with the Zoning Administrator before committing to a project pro forma — the ordinance is amended periodically and specific ADU-like allowances vary by district and by interpretation of the 'customarily incidental' accessory-use standard.

Middlesex County administers several overlay regimes that bear materially on ADU projects, and coastal / tidal exposure is the single most important physical constraint on county land use. The relevant overlays are: (1) a Floodplain Management Overlay District tied to FEMA Special Flood Hazard Areas, which covers a large share of the county because Middlesex County is a tidewater peninsular jurisdiction (low elevation, extensive Rappahannock River, Piankatank River, and Chesapeake Bay frontage at Stingray Point, with deep internal tidal creeks and marsh systems including Jackson Creek, Fishing Bay, Locklies Creek, Urbanna Creek, Wilton Creek, and Sturgeon Creek); (2) Chesapeake Bay Preservation Act jurisdiction across the entire county (Middlesex is a Tidewater locality designated under Va. Code § 62.1-44.15:67 et seq.), with Resource Protection Area (RPA) buffers of 100 feet from perennial water bodies and tidal wetlands and Resource Management Area (RMA) coverage on nearly all remaining landward extent; (3) Virginia Marine Resources Commission (VMRC) tidal-wetlands and subaqueous-bottom jurisdiction reaching any project touching tidal waters, wetlands, dunes, or beaches, and oyster-ground lease jurisdiction covering extensive Rappahannock and Piankatank bottom acreage where working-waterman aquaculture is a material economic use; (4) locally-relevant historic sites and NRHP-listed corridors including the Urbanna Historic District (administered by the Town of Urbanna, not the county, covering a notably well-preserved colonial-port streetscape), Christ Church and the broader Christchurch vicinity, and numerous NRHP-listed plantations and village cores across the county; (5) state conservation parcels and scattered Virginia Outdoors Foundation easements that restrict development on specific parcels. Middlesex County has NO California-style coastal commission (Virginia has no coastal-commission analog; coastal regulation flows through the CBPA, the VMRC for tidal-wetlands permits, and local ordinances), NO CalFire-equivalent WUI regulatory overlay (Virginia has no statewide WUI overlay), and NO seismic-retrofit overlay. However, the combination of pervasive floodplain, pervasive CBPA, regular VMRC joint-permit triggers, and the co-location of working-waterfront aquaculture alongside residential waterfront makes this one of the more overlay-dense rural counties in Virginia despite its modest population of roughly 10,500.

• Floodplain Management Overlay District
• Chesapeake Bay Preservation Act (CBPA) Resource Protection Area and Resource Management Area
• Virginia Marine Resources Commission (VMRC) tidal-wetlands, subaqueous-bottom, sand-dune, and oyster-ground jurisdiction
• Urbanna Historic District, Christchurch vicinity, and NRHP-listed plantations
• Hummel Field Airport (W75) approach-protection reach

Middlesex County's Department of Planning and Zoning handles zoning permits, Special Use Permits, site plan review, subdivision review, and Chesapeake Bay Preservation District administration for every parcel in the county except those inside the Town of Urbanna (which administers its own zoning and permitting) and state / federal land. Building Inspections issues building permits and trade permits for the same non-town territory. A typical ADU-like permit bundle (where a second dwelling is permitted) includes: (1) a Special Use Permit from the Board of Supervisors with Planning Commission recommendation, unless the parcel qualifies for an A-R family-member or farm-labor dwelling allowance, (2) a Zoning Permit confirming use compliance and district setback compliance, (3) a Building Permit with stamped residential plans, (4) Electrical, Plumbing, and Mechanical trade permits, (5) a Virginia Department of Health (VDH) - Three Rivers Health District construction permit for well and/or septic on parcels not served by public water or sewer (which is the great majority of parcels — public sewer coverage is limited to small service-district pockets in and around Saluda, Urbanna, and Deltaville), (6) a Floodplain Development Permit if any portion of the parcel is within the mapped Special Flood Hazard Area — which is a LARGE fraction of parcels in Middlesex County because the county is a low-lying peninsular tidewater jurisdiction with the Rappahannock River to the north, the Piankatank River to the south, the Chesapeake Bay to the east at Stingray Point, and extensive internal tidal creek and marsh systems, (7) a Chesapeake Bay Preservation Act review — Middlesex County IS a Tidewater locality subject to the CBPA, with Resource Protection Area (RPA) and Resource Management Area (RMA) rules applying across nearly the entire county given its tidal geometry, (8) a Virginia Marine Resources Commission (VMRC) permit for any work below mean high water or encroaching on tidal wetlands, (9) a US Army Corps of Engineers permit where federal waters are involved, and (10) Historic overlay review if the parcel is within a designated local historic overlay (Urbanna's colonial port core is inside town jurisdiction and separately administered; portions of the Christchurch vicinity and scattered NRHP-listed sites on county territory require case-by-case review).