Building permits, zoning and septic in Town of Blacksburg, Virginia

At a glance

Building permits

Town Building Safety Division; required for home construction²¹

Zoning

Town zoning; lot size and setbacks vary by district³

Septic permits

VDH New River Health District; construction permit required⁵⁷

RV living

Prohibited, except as otherwise provided in the ordinance or for maintenance⁴

Owner-builder

Contractor-license exemption for a qualifying personal primary residence; building code still applies⁸

Private wells

New River Health District provides evaluation and permitting⁹

Who to call

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Do you need a building permit in Town of Blacksburg, VA?

A new home in Town of Blacksburg needs a building permit before construction begins under Virginia’s statewide building code.¹ Blacksburg’s Building Safety Division reviews construction plans, issues building permits, inspects construction and issues certificates of occupancy.² The town department enforces both the Virginia Uniform Statewide Building Code and the town’s zoning ordinance, so building-code approval and zoning compliance belong in the same project plan.²

Virginia’s owner-builder exemption concerns contractor licensing for a qualifying primary residence owned and used by the builder; the exemption does not remove building-code obligations.⁸

Who issues building permits and zoning approvals in Town of Blacksburg?

For building permits in Town of Blacksburg, contact the Building Safety Division at 540-443-1325.² The Planning and Building Department accepts applications online through OpenGov, accessible from the department’s official page.² The town’s Zoning Administrator reviews zoning permits, zoning verification letters and variance requests.² For planning and zoning questions, use the department’s general number, 540-443-1300.²

These town services cover building and zoning matters; septic and private-well evaluation and permitting are provided by New River Health District Environmental Health.²⁹

Does Town of Blacksburg have zoning, lot-size rules and setbacks?

Town of Blacksburg has zoning with district-specific development standards.³ In the R-4 Low Density Residential District, the minimum lot area is 10,000 square feet and minimum frontage is 40 feet.¹⁰ R-4 baseline setbacks are 30 feet front, 10 feet side and 25 feet rear; a street-facing side yard on a corner lot is 20 feet, and specified front-yard reductions may apply.¹¹

Rural Residential 1 has no minimum lot size, but maximum density is one dwelling unit per acre excluding acreage within the 100-year floodplain, with 20 feet of frontage on a publicly maintained street.¹² A small lot therefore does not automatically establish the right to build in Rural Residential 1; the density standard still applies.¹²

How do septic permits and private wells work inside Town of Blacksburg?

Septic permitting for Montgomery County properties is administered through VDH’s New River Health District, rather than the town building-permit counter.⁵⁶ Virginia requires a written septic construction permit before construction, expansion or modification of a sewage disposal system.⁷ New River Health District Environmental Health provides site evaluation for septic-system and private-well design and permitting.⁹ Contact the Montgomery County Health Department at (540) 585-3300 for the local health office.¹³

Septic inspection requirements depend on the design: installations certified by a licensed professional engineer or onsite soil evaluator use the certifier’s inspection-report route, while other covered installations require local health-department inspection and approval before covering or use.¹⁴

Can you live in an RV or tiny home in Town of Blacksburg?

Town of Blacksburg prohibits using a recreational vehicle for living or business purposes or connecting an RV to utilities, except for maintenance or as otherwise provided in the zoning ordinance.⁴ Ask the town’s Zoning Administrator whether a specific ordinance exception applies before planning to occupy an RV during home construction.⁴²

We could not confirm a townwide tiny-home occupancy rule or minimum dwelling floor area; ask the Planning and Building Department to review the proposed dwelling and parcel.² District-specific lot standards still matter: Blacksburg’s Rural Residential 1 density limit applies even though that district has no minimum lot size.¹²

What are the steps to building a home in Town of Blacksburg?

1. Request zoning verification from Blacksburg’s Zoning Administrator and identify the parcel’s district before fixing the house location.²³
2. Resolve sewage disposal: if the project needs septic, obtain the required construction permit through the health-department framework before septic construction.⁷⁵
3. Submit the building application through the town’s OpenGov platform and obtain a building permit before covered construction begins.²¹⁵
4. Arrange the applicable building inspections as construction reaches each inspection stage, including work before concealment and the final inspection.¹⁶
5. Obtain the required certificate of occupancy before occupying the new home.¹⁷

For a parcel outside town limits, use the Montgomery County guide for the county’s building and zoning answers; incorporated areas are under municipal zoning jurisdiction.¹⁸

Watch-outs

• Blacksburg’s water and sewer connection schedule covers a connection from an existing main to the lot line, not extension of a main where none exists; ask the town for current charges and service availability.¹⁹
• A building official may require a permit for otherwise exempt work in a special flood hazard area; ask Blacksburg’s Planning and Building Department to review floodplain implications for the parcel.²⁰²
• We could not confirm Blacksburg’s current accessory-dwelling standards; ask the town’s Zoning Administrator before treating a second dwelling as allowed.²

Sources

1. 13VAC5-63-80. Section 108 Application for permit (Virginia statewide rule), quoted and re-checked
2. Town of Blacksburg Planning and Building Department — Building Safety Division (blacksburg.gov)
3. Blacksburg Zoning Ordinance, § 3023—Rural Residential 1 development standards (Town of Blacksburg), quoted and re-checked
4. Blacksburg Zoning Ordinance, § 5201—General regulations for parking (Town of Blacksburg), quoted and re-checked
5. VDH New River Health District - Environmental Health (2026 county census)
6. § 32.1-164. Powers and duties of Board; regulations; fees; onsite soil evaluators; letters in lieu of permits; inspections; civil penalty (Virginia statewide rule), quoted and re-checked
7. 12VAC5-610-240. Permits; general (Virginia statewide rule), quoted and re-checked
8. § 54.1-1101. Exemptions; failure to obtain certificate of occupancy; penalties (Virginia statewide rule), quoted and re-checked
9. VDH New River Health District Environmental Health (vdh.virginia.gov)
10. Blacksburg Zoning Ordinance, § 3042—R-4 Low Density Residential site development regulations (Town of Blacksburg), quoted and re-checked
11. Blacksburg Zoning Ordinance, § 3042—R-4 Low Density Residential site development regulations (Town of Blacksburg), quoted and re-checked
12. Blacksburg Zoning Ordinance, § 3023—Rural Residential 1 development standards (Town of Blacksburg), quoted and re-checked
13. Montgomery County Health Department — VDH New River Health District (vdh.virginia.gov)
14. 12VAC5-610-320. Inspection and correction (Virginia statewide rule), quoted and re-checked
15. 13VAC5-63-80. Section 108 Application for permit (Virginia statewide rule), quoted and re-checked
16. 13VAC5-63-130. Section 113 Inspections (Virginia statewide rule), quoted and re-checked
17. 13VAC5-63-160. Section 116 Certificates of occupancy (Virginia statewide rule), quoted and re-checked
18. § 15.2-2280. Zoning ordinances generally (Virginia statewide rule), quoted and re-checked
19. Water and Sanitary Sewer Connection Fees—July 2025 through June 2026 (Town of Blacksburg), quoted and re-checked
20. 13VAC5-63-80. Section 108 Application for permit (Virginia statewide rule), quoted and re-checked

Written October 11, 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.