Unincorporated Northumberland County, Virginia requires a building permit before covered construction begins and locally enforces the statewide building code12. The county administers zoning in its unincorporated areas and publishes building, trade, zoning and land-disturbing permit forms34. Onsite sewage permits go through the Virginia Department of Health's Three Rivers Health District5.
At a glance
- Building permit
- Required before covered construction begins under Virginia's statewide building code16
- Zoning (unincorporated county)
- Yes, administered by the county Building & Zoning Department3
- Septic permit
- Required through VDH's Three Rivers Health District57
- Owner-builder
- Conditional licensing exemption for one owned primary residence for personal use in a 24-month period8
- RV living
- Not confirmed for private land; ask county Building & Zoning9
- Tiny home
- No county-specific occupancy rule confirmed; zoning and building rules still apply1011
- Private well
- Permit, inspection, well-driller report and satisfactory drinking-water sample required12
- Septic soil suitability
- About 4.4% of county land lacks severe limits for a conventional drain field13
Who to call
Building permits
Northumberland County Building & Zoning Department
Building permits, permit searches, inspections, zoning requirements and land-use violations
P.O. Box 129, 72 Monument Place, Heathsville, VA 22473
Septic permits
Northumberland County Health Department, Environmental Health
Environmental Health contact for onsite sewage and private-well services in Northumberland County
6373 Northumberland Highway, Suite B, P.O. Box 69, Heathsville, VA 22473
Contact details are copied from each office’s official page and were checked against it on October 12, 2026.
Off-grid gear
Going off-grid in Northumberland County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Northumberland County, Virginia?
Yes. Northumberland County requires a permit before covered construction, removal or improvement begins, subject to listed exemptions and special rules for emergency work1. Virginia adopts the Uniform Statewide Building Code, and Northumberland County's local building department enforces it6. The current statewide adoption includes the 2021 I-codes and 2020 National Electrical Code, effective January 18, 202414. Permit-related inspections do not apply to listed exempt activities unless the owner requests a permit, but work in a special flood hazard area may still need approval15. A qualifying farm building is exempt only when it is nonresidential, located where farming occurs and used primarily for a covered farm purpose; the exemption does not cover a licensed on-farm restaurant16.
Who issues Northumberland County building and zoning permits?
The Northumberland County Building & Zoning Department reviews development plans, enforces zoning ordinances, investigates land-use violations and provides zoning information9. Call (804) 580-8910 or visit 72 Monument Place, Heathsville, VA 22473; mail goes to P.O. Box 129 at the same locality9. The department publishes building, electrical, mechanical, plumbing, zoning and land-disturbing forms and directs applicants to email completed Building and Zoning forms to its administrative assistant4. The county fee schedule lists a $75 zoning permit and a building fee of $0.12 per square foot, including a double-wide, but the schedule may change during the fiscal year17. The published material does not give a complete review timeline18.
Does Northumberland County, Virginia have zoning?
Northumberland County administers zoning for unincorporated parcels3. The Town of Kilmarnock, which reaches into Northumberland County, controls zoning within its boundaries; onsite sewage and private-well approvals remain with Three Rivers Health District195.
In Northumberland County's R-1 Residential General and R-2 Residential Waterfront districts, structures need 35 feet from a street right-of-way at least 50 feet wide, or 60 feet from the center line of a narrower right-of-way; corner lots also need a 35-foot side-street setback2021. Approved R-1 and R-2 variances in 2024 were parcel-specific, not blanket reductions; a later R-2 notice describes a request, not an approval222324. Ask Building & Zoning for the parcel's full setback schedule, including side and rear yards259.
Minimum lot area is 1 acre in A-1 and R-2, and 3/4 acre in R-1 and R-4; R-4 allows 1/2 acre with both public water and sewer26272829. R-3 has no fixed minimum, but lots using individual sewage disposal need Health Official area approval; public water and sewer systems are exempt from area regulations30.
How do septic and well permits work in Northumberland County?
The Virginia Department of Health's Three Rivers Health District handles onsite sewage and private-well approvals in Northumberland County5. Call Environmental Health at (804) 580-8827 or visit 6373 Northumberland Highway, Suite B, Heathsville, VA 2247331. An onsite-system construction permit covers a specified location, remains valid for 18 months and does not transfer when ownership changes7. After installation and inspection, the Health Department's operation permit is needed for the local building official's certificate-of-occupancy process32. A new private well requires a permit and Health Department inspection, a well driller's construction report and, for drinking water, a satisfactory sample showing no bacteria12. When a private well serves a property with onsite sewage, the well must be approved before the sewage-system operation permit can be issued12. Only about 4.4% of county land lacks severe limits for a conventional drain field, so make the site-and-soil evaluation an early purchase contingency13.
Can you live in an RV or tiny home in Northumberland County?
We could not confirm a Northumberland County rule that broadly allows or prohibits living in an RV on private land; ask the Building & Zoning Department about the parcel's district and proposed occupancy9. Virginia's temporary-campground rule does not answer private-parcel RV living because it applies to permitted campground operations33. We also could not confirm a county-specific tiny-home occupancy rule. A foundation-built tiny home still goes through the county's building-permit and zoning processes134. A manufactured home follows a different statewide path: placement must be allowed in qualifying agricultural districts, while placement in certain other residential districts requires conversion to real property, an individual lot and a timely certificate of occupancy35.
What are the steps to build in Northumberland County?
- Ask the Building & Zoning Department to identify the parcel's zoning district and full setback schedule before finalizing a site plan925.
- Start onsite sewage and private-well review with Three Rivers Health District early because conventional drain-field suitability is severely limited across most county land513.
- Select the county's published building, trade, zoning and land-disturbing forms, then email the completed Building and Zoning forms as directed4.
- File with the county building official before covered construction begins1.
- For an owner-built primary residence, file the written licensing-exemption statement and proof of required taxes or license fees before building-permit issuance; the exemption covers no more than 1 owned primary residence for personal use per 24 months and still requires building-code compliance36.
- Complete building, septic and well inspections; the onsite system needs a Health Department operation permit before the local certificate-of-occupancy process can finish153212.
- Obtain the certificate of occupancy before occupying the building or changing its occupancy, subject to the listed accessory-structure and residential-addition exceptions37.
- Obtain a VDOT land-use permit before constructing or changing an entrance on a VDOT-maintained highway38.
What should you check before buying Northumberland County land?
Confirm the parcel's zoning, setbacks and intended use with Northumberland County Building & Zoning before closing349. A proposed land division needs subdivision review; the published fee document lists $50 per plat and $5 per lot, but ask Building & Zoning to confirm the current charges and design standards399.
For rentals lasting fewer than 30 consecutive days, Northumberland County generally requires $75 annual registration by January 1, or within 60 days of the initial offering; specified exemptions apply40. Registration does not replace zoning approval: vacation rentals in R-3 need a conditional use permit, and the application requires approved sanitation, bedroom-based occupancy limits and 1 off-street parking space per bedroom41.
Check septic feasibility and the seller's approval: only about 4.4% of county land lacks severe conventional drain-field limitations, and septic construction permits do not transfer with ownership137. A private-well permit costs $300; a replacement-well fee is refundable after receipt of the old well's abandonment report12. Otherwise exempt work may need a building permit in a special flood hazard area42. Farmland averages about $3,890 per acre; the effective property-tax rate is about 0.5%, with a median annual bill of $1,602434445.
Watch-outs
- A septic construction permit lasts 18 months and does not transfer to a new owner, so verify permit status before relying on a seller's approval7.
- Northumberland County's RV, tiny-home, minimum-size, lot-coverage and height rules could not be confirmed; get a parcel-specific answer from the Building & Zoning Department9.
- The owner-builder exemption covers contractor licensing, not building-code compliance or other county approvals; before selling, obtain a certificate of occupancy unless the purchaser gives the statutory written acknowledgment and consent836.
Sources
- 13VAC5-63-80. Section 108 Application for permit, quoted and re-checked
- Building & Zoning, quoted and re-checked
- Building & Zoning, quoted and re-checked
- Building & Zoning, quoted and re-checked
- Environmental Health Services - Three Rivers Health District, quoted and re-checked
- Virginia Uniform Statewide Building Code (USBC), quoted and re-checked
- Environmental Health Services - Three Rivers Health District, quoted and re-checked
- § 54.1-1101. Exemptions; failure to obtain certificate of occupancy; penalties, quoted and re-checked
- Northumberland County Building & Zoning Department (co.northumberland.va.us)
- Northumberland County - Building and Zoning (2026 county census)
- Building & Zoning (2026 county census)
- Environmental Health Services - Three Rivers Health District, quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Codes, quoted and re-checked
- 13VAC5-63-80. Section 108 Application for permit, quoted and re-checked
- Code of Virginia § 36-99. Provisions of Code; modifications (Virginia statewide rule), quoted and re-checked
- Chapter 68. Fee Schedule, quoted and re-checked
- Forms & Permits, quoted and re-checked
- Town of Kilmarnock: Planning & Zoning - Kilmarnock, Virginia (Northumberland County), quoted and re-checked
- Article IV: Residential General District R-1 - Northumberland County, VA, quoted and re-checked
- Article V: Residential Waterfront District R-2 - Northumberland County, VA, quoted and re-checked
- Building & Zoning, quoted and re-checked
- Building & Zoning, quoted and re-checked
- Notice of Public Hearing — August 5, 2025, quoted and re-checked
- Article II: Conservation District C-1 - Northumberland County, VA, quoted and re-checked
- Article III: Agricultural District A-1, quoted and re-checked
- Article V: Residential Waterfront District R-2, quoted and re-checked
- Article IV: Residential General District R-1, quoted and re-checked
- Article VII: Residential Recreational District R-4, quoted and re-checked
- Article VI: Residential Restricted District R-3, quoted and re-checked
- Northumberland County Health Department, Environmental Health (vdh.virginia.gov)
- Environmental Health Services - Three Rivers Health District, quoted and re-checked
- 12VAC5-450 Rules and Regulations Governing Campgrounds (Virginia statewide rule), quoted and re-checked
- Building & Zoning, quoted and re-checked
- § 15.2-2290. Uniform regulations for manufactured housing (Virginia statewide rule), quoted and re-checked
- § 54.1-1101. Exemptions; failure to obtain certificate of occupancy; penalties, quoted and re-checked
- 13VAC5-63-160. Section 116 Certificates of occupancy, quoted and re-checked
- Land use permits (Virginia statewide rule), quoted and re-checked
- Chapter 68. Fee Schedule, quoted and re-checked
- Northumberland County Code for Short-Term Rental Registry, quoted and re-checked
- Northumberland County Code for Short-Term Rental Registry, quoted and re-checked
- 13VAC5-63-80. Section 108 Application for permit (Virginia statewide rule), quoted and re-checked
- Farmland value per acre (USDA census): Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written October 12, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.