Montgomery County, VA Building Permits, Zoning & Septic Rules

Unincorporated Montgomery County, Virginia requires a building permit, and the county Building Inspections Office enforces the statewide code locally¹. County zoning also applies, while zoning inside the two towns is handled by their respective governments²³. A private-septic home follows a septic-permit, zoning-approval, then building-permit sequence⁴.

At a glance

Building permit: Required in unincorporated Montgomery County, issued by the Building Inspections Office¹
Zoning: County zoning applies outside the two towns; town governments handle zoning within their boundaries²³
Septic: A Health Department construction permit comes before county zoning approval for a private-septic home⁵⁴
Owner-builder: Available for one personally owned primary residence in 24 months, but building-code compliance still applies⁶
Manufactured home: Allowed in agricultural zoning districts; must be converted to real property elsewhere⁷
Driveway onto a state highway: Needs a VDOT land use permit before you build the entrance⁸
Building-permit fee: Published residential rate is $0.22 per square foot, with a $45 minimum plus applicable levies⁹
Septic soils: Only about 9% of soils rate free of severe limits for a conventional drain field¹⁰

Who to call

Building permits

Montgomery County Building Inspections Office

Building permit plan review, permit issuance, and inspections for unincorporated Montgomery County

540-382-5750

[email protected]

755 Roanoke St., Suite 1D, Christiansburg, VA 24073

Online permits →

Zoning

Montgomery County Planning & GIS Services

Zoning verification letters and zoning permits for dwellings, manufactured homes, and additions in unincorporated Montgomery County

540-394-2148

[email protected]

755 Roanoke St., Suite 2A, Christiansburg, VA 24073

Septic permits

Montgomery County Health Department (VDH New River Health District)

Septic (onsite sewage) construction permits and inspections for Montgomery County

540-585-3300

210 South Pepper Street, Suite A, Christiansburg, VA 24073

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

Do you need a building permit in Montgomery County, Virginia?

Yes. Unincorporated Montgomery County requires a building permit, and the Building Inspections Office enforces the Virginia Uniform Statewide Building Code and inspects construction in the unincorporated county¹¹¹. The published residential fee is $0.22 per square foot with a $45 minimum; the schedule also adds a 2% state levy and a 2% technology fee with a $10 minimum⁹. An eligible owner-builder may personally perform or supervise work on one owned primary residence for personal use during a 24-month period, but that contractor-licensing exemption does not waive building-code compliance⁶. Before occupying a regulated home, obtain a certificate of occupancy after final inspection; IRC accessory structures and certain additions have stated exceptions¹². Qualifying nonresidential farm buildings are exempt from the building code, subject to the state's conditions and flood-area rules¹³.

Who is the Montgomery County building department, and how do you reach them?

The Montgomery County Building Inspections Office, at 755 Roanoke St., Suite 1D in Christiansburg, handles building permits and inspections in the unincorporated county¹¹. Call 540-382-5750 or email [email protected], and use the office's online inspection-request portal once work is underway¹¹. The office recommends requesting inspections about 36 hours ahead because of workload¹¹. Building Inspections is not the first stop for a new private-septic home: county procedure calls for zoning verification, a septic construction permit, zoning application and checklist approval, and then the building permit⁴. Public-water or public-sewer parcels require service verification from the applicable county or town utility provider¹⁴.

Does Montgomery County have zoning?

Yes. Montgomery County applies its zoning ordinance across county-administered areas, but zoning inside the two towns is handled by the respective town governments and councils²³. For county-administered land, use the zoning map to identify the district and the County Code to check that district's allowed uses and definitions¹⁵. Planning & GIS Services provides zoning verification and zoning permits for dwellings, manufactured homes and additions¹⁶. County zoning approvals are generally completed within 1 to 2 business days after submittal, but that timing does not replace the need for septic or utility documentation⁴. The available materials do not establish one countywide minimum home size, setback, lot-size, RV-occupancy or tiny-home rule; ask Planning & GIS Services at 540-394-2148 or [email protected] about the parcel's district before designing or buying¹⁶.

How do septic permits work in Montgomery County?

For a Montgomery County dwelling, manufactured home or addition using private septic, obtain a septic construction permit from the Montgomery County Health Department before county zoning approval⁵⁴. The local VDH New River Health District office is at 210 South Pepper Street, Suite A in Christiansburg and can be reached at 540-585-3300¹⁷. The bedroom limit on the septic permit must match the building plans, or a conditional septic permit is required; a room with both a means of egress and a closet is treated as a bedroom regardless of its label⁵. Only about 9% of Montgomery County soils rate free of severe limitations for a conventional drain field, so establish septic feasibility before fixing the house footprint and bedroom count¹⁰. If public water and sewer serve the parcel instead, obtain service verification from the applicable county or town utility provider¹⁴.

Can you live in an RV or tiny home on your land in Montgomery County?

We could not confirm a county rule that allows long-term RV residence or a tiny home as a dwelling on every parcel in unincorporated Montgomery County. County zoning districts have their own definitions and approved uses, so ask Planning & GIS Services to check the parcel and proposed use before buying or placing a unit¹⁵¹⁶. Virginia's licensed-campground rule addresses stays of 14 days or less within a 60-day period and does not establish a right to live permanently in an RV on private land¹⁸. Manufactured homes have a separate statewide rule: qualifying homes must be permitted on individual lots in agricultural or similar districts where site-built housing is allowed, while placement in other districts generally depends on conversion to real property⁷. A tiny home intended as a residence still needs the county's zoning and building approvals applicable to its proposed use⁴.

Building a home in Montgomery County: the steps, in order

Ask Planning & GIS Services to verify the parcel's zoning district and the proposed dwelling use¹⁵¹⁶.
For private septic, obtain the Health Department's septic construction permit; make its bedroom limit match the house plans⁵.
For public water or sewer, obtain service verification from the applicable county or town utility provider¹⁴.
Submit the required zoning review, site plan and building drawings to Planning & GIS Services; county zoning approvals generally take 1 to 2 business days after submittal⁴.
After zoning approval, apply to Building Inspections and pay the applicable permit fee and levies⁴⁹.
Request required inspections as work reaches each stage, allowing about 36 hours when possible¹⁹¹¹.
Pass final inspection and obtain the certificate of occupancy before moving into the home¹².

What to check before you buy land in Montgomery County

Confirm whether the parcel is under county zoning or one of the two town governments, then verify the district's approved uses in the applicable code³¹⁵. Test septic feasibility early because only about 9% of Montgomery County soils rate free of severe limitations for a conventional drain field¹⁰. For a subdivision plat involving floodplain land, county review requires mapped flood zones and applicable Flood Insurance Rate Maps; larger subdivisions meeting the stated lot or acreage threshold also require calculated base-flood elevations²⁰. A new or modified entrance on a VDOT-maintained highway requires a VDOT land-use permit⁸. Confirm public water and sewer availability with the applicable service provider instead of assuming nearby lines can serve the parcel¹⁴. Montgomery County's median property-tax bill is about $2,174 per year, with an effective rate near 0.8%²¹²².

Watch-outs

For a private-septic home, Montgomery County's published order is zoning verification, septic construction permit, zoning approval, then building permit⁴.
A septic permit's bedroom limit must match the building plans, and a room with a closet and means of egress counts as a bedroom regardless of its label⁵.

Sources

Written September 29, 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.

How Montgomery County scores

Seclusion40100% ev.

Self-Sufficiency59100% ev.

Admin Boringness3990% ev.

Durability84100% ev.

Property Autonomy66100% ev.

Carry Cost75100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$350kTypical home

0.8%Property tax

$5,743Land / acre

42.6"Annual rain

0.7% of yrsSevere drought

1.2 / yr (+1.1)Mid-century 100°F days

13.3 daysMid-century dry spell

1.7" (+9.8%)Mid-century 1-day rain

1.56×Wildfire change factor

100%Forward climate coverage

$1,094Home insurance / yr

2.5% / yrInsurance growth

1%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

103,532People within 30 min

1,685,945People within 2 hr

129,988Radius comparison (15 mi)

255.1People / sq mi

8.9%Federal land

34.9%Land at 15% slope or less

8.5%Septic soil without severe limits

20,827 acWorkable land screen

72.6%Wooded land

53.3 tonsBiomass / forest ac

53.7°FAvg temp

Answers from the rulebook for Montgomery County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Montgomery County rules

County-wide zoningPresent
Applied county zoning ordinance coverage in Montgomery County, excluding separate municipal administration where applicable.
- For zoning information in either of the two towns, the county GIS layer directs users to the respective town governments and councils.
“current coverage of applied Zoning ordinance throughout the County.”
Zoning Layer ↗Re-checked Sep 25, 2026
Local zoningVaries (with conditions)
Aggregate county record for local zoning; county zoning applies in county areas while the two towns are directed to their respective governments and councils.
- This is an aggregate conclusion and does not mean the county administers each municipal ordinance.
- Municipal zoning information must be obtained from the respective town governments and councils.
“For Zoning information in either of the two Towns, see guidance from respective Town Governments and Councils.”
Zoning Layer ↗Re-checked Sep 25, 2026
Zoning districtsPublished
County zoning districts and applied zoning coverage in Montgomery County.
- The county GIS layer directs users to the County Code for detailed zone definitions and approved land uses.
- For either of the two towns, users are directed to the respective town governments and councils.
“See County Code for detailed Zone definitions and approved land uses.”
Zoning Layer ↗Re-checked Sep 25, 2026
Septic permitRequired
Dwellings, manufactured homes, and additions using private septic systems in Montgomery County.
- The number of bedrooms or employee occupancy limitations on the septic permit must match the building plans, or a conditional septic permit is required.
- Rooms with means of egress and a closet are treated as bedrooms regardless of labeling.
- Nonresidential uses are limited by employee count or occupancy.
“Apply for and obtain a septic construction permit from the Montgomery County Health Dept.”
Zoning Permits ↗Re-checked Sep 25, 2026
Mandatory utility hookupConditional
Dwellings, manufactured homes, additions, and accessory structures where public water or sewer service may be available.
- For parcels served by public water and sewer, verification of service from Montgomery County PSA, Montgomery County Utilities, the Town of Blacksburg, or the Town of Christiansburg is required as applicable.
- Private septic systems follow a separate septic-permit process.
“Verification of water and sewer service [...] will be required if parcel is served by public water and sewer.”
Zoning Permits ↗Re-checked Sep 25, 2026
Building in a floodplainLimited
Subdivision plat review where floodplain information is implicated.
- The checklist requires identification of flood zones and applicable Flood Insurance Rate Maps.
- HUD/FEMA-designated 100-year floodplain and base flood elevations must be shown.
- For five or more lots or 50 or more acres, base flood elevations must be calculated.
base flood elevation calculation threshold: 5+ lots or 50+ acres
“Base flood elevations calculated (if 5+ lots or 50+ acres)”
Family Subdivision Checklist ↗Re-checked Sep 25, 2026
Permit feesPublished (with conditions)
County building permits and related construction in unincorporated Montgomery County.
- The schedule is labeled effective June 2018.
- Fees are rounded to the nearest dollar.
- A Virginia State Levy of 2% and Technology Fee of 2% apply; the technology fee has a $10 minimum.
- Residential construction is listed at $0.22 per square foot with a $45 minimum.
- Non-residential construction is listed at $0.32 per square foot with a $45 minimum.
- Manufactured housing fees are listed as $190 single-wide, $230 double-wide, and $300 triple-wide.
- The Building Official may assess additional fees.
residential construction fee: 0.22 USD per square foot (minimum $45) · non-residential construction fee: 0.32 USD per square foot (minimum $45) · Virginia State Levy: 2 percent · technology fee: 2 percent (minimum $10)
“Residential Construction [...] $0.22 per sq. ft. Minimum $45 fee”
Building Inspections Department Fee Schedule ↗Re-checked Sep 25, 2026
Permit processPublished (with conditions)
Residential construction, manufactured homes, additions, accessory structures, and related zoning/building approvals in unincorporated Montgomery County.
- Private-septic projects require zoning verification, septic construction permit, zoning application/checklist approval, and then a building permit.
- Public-sewer projects require a zoning review form, site plan, floor plan, elevation plan, service verification when applicable, and then a building permit.
- Accessory structures require zoning review materials and then a building permit.
- County zoning approvals are generally completed within 1 to 2 business days after submittal.
typical zoning approval time: 1 to 2 business days (generally, after submittal)
“Approvals are generally done within 1 to 2 business days of submittal.”
Zoning Permits ↗Re-checked Sep 25, 2026
Building permitRequired
The county Building Inspections Office enforces the Virginia Uniform Statewide Building Code, issuing permits and inspecting new construction in the unincorporated county.
Montgomery County, VA - Building Permits & Inspections ↗Scouted from the county site, not yet independently re-checked

Virginia rules that apply here

Owner-builder exemptionAvailable (with conditions)
A person constructing, removing, repairing, or improving no more than one primary residence owned by that person for personal use during any 24-month period.
- The owner-builder exemption is from Virginia contractor-licensing provisions, not an exemption from the Uniform Statewide Building Code.
- The person must comply with the USBC.
- Other listed statutory exemptions have separate conditions.
- A certificate of occupancy is required before conveyance in specified cases unless the purchaser consents in writing to acquire without one.
primary residences per period: 1 residence per 24 months (owned by the person and for the person's own use)
“Any person who performs or supervises the construction, removal, repair, or improvement of no more than one primary residence owned by him”
§ 54.1-1101. Exemptions; failure to obtain certificate of occupancy; penalties ↗Re-checked Sep 25, 2026
Building code adoptedAdopted (with conditions)
Construction of new buildings, structures, and additions; maintenance, repair, renovation, and changes in use of existing buildings and structures throughout Virginia.
- The Board of Housing and Community Development adopts and amends the USBC.
- Enforcement is the responsibility of the local government's building inspections department.
- The Uniform Statewide Building Code does not supersede other state-agency regulations governing building-related activities not covered by the USBC, including public water supply systems, wastewater treatment and disposal systems, and solid waste facilities.
- The Code does not supersede specified proffered conditions, special exceptions, special or conditional use permits, variances, clustering and open-space development conditions, airport or highway overlay-district requirements, historic-district requirements, or local floodplain regulations adopted for participation in the National Flood Insurance Program.
current adopted code edition: 2021 Uniform Statewide Building Code · effective date: 2024-01-18 · adopted referenced electrical code: 2020 National Electrical Code
“The effective date of the 2021 Uniform Statewide Building Code, 2021 Statewide Fire Prevention Code, 2021 Industrialized Building Safety Regulations and the 2021 Amusement Device Regulations is Jan. 18, 2024.”
Virginia Uniform Statewide Building Code (USBC) ↗Re-checked Sep 21, 2026
InspectionsRequired
Construction or permits subject to the Virginia Uniform Statewide Building Code, with inspections administered by the applicable local building official or approved inspection agency.
- The building official must conduct the listed minimum inspections when applicable to the construction or permit.
- The minimum inspections include footings, foundations, preparatory concrete work, structural members and fasteners before concealment, electrical/mechanical/plumbing systems before concealment, energy-conservation materials before concealment, and final inspection.
- Where construction cost is less than $2,500, an inspection may be waived at the inspecting authority's discretion.
- The permit holder must provide ladders, scaffolding, or test equipment necessary for a requested inspection and must notify the building official when an inspection stage is reached.
- Approved third-party inspection reports may be accepted under the building official's written policy.
- A final inspection is required upon completion of construction for which a permit was issued.
construction cost threshold for discretionary inspection waiver: < 2500 USD (inspection may be waived at the discretion of the inspecting authority)
“The following minimum inspections shall be conducted by the building official when applicable to the construction or permit:”
13VAC5-63-130. Section 113 Inspections ↗Re-checked Sep 21, 2026
Certificate of occupancyRequired
Occupancy or change of occupancy of buildings or structures regulated by the Virginia Uniform Statewide Building Code.
- A certificate of occupancy must be obtained before occupancy or change of occupancy.
- The building official issues it within five working days after approval of the final inspection and determination of compliance with the code and pertinent laws or ordinances.
- A certificate of occupancy is not required for an IRC accessory structure.
- A new certificate of occupancy is not required for an addition to an existing Group R-5 building that already has a certificate of occupancy.
- A temporary certificate may be issued before completion if the portion can be occupied safely without endangering life or public safety.
- For certain contractor-license exemptions, a certificate of occupancy must still be obtained before conveying the property to a third-party purchaser unless the purchaser acknowledges in writing that none was issued and consents to acquire without one.
certificate issuance deadline after final inspection approval: 5 working days (when the building or structure is determined to comply with the code and pertinent laws or ordinances)
“Prior to occupancy or change of occupancy of a building or structure, a certificate of occupancy shall be obtained in accordance with this section.”
13VAC5-63-160. Section 116 Certificates of occupancy ↗Re-checked Sep 21, 2026
One more reviewed finding on this topic
- Required — Occupancy or change of occupancy of buildings and structures in Montgomery County.
  “Prior to occupancy or change of occupancy of a building or structure, a certificate of occupancy shall be obtained in accordance with this section.”
  13VAC5-63-160. Section 116 Certificates of occupancy ↗Re-checked Sep 25, 2026
Manufactured homesLimited
Placement and occupancy of manufactured homes in Virginia localities that adopt and enforce zoning ordinances.
- In agricultural zoning districts, or similarly classified districts where agricultural, horticultural, or forest uses are dominant and site-built housing is allowed, placement of manufactured homes must be permitted.
- In other zoning districts where site-built housing is allowed, the manufactured home must be converted to real property under § 46.2-653.1, have its certificate of occupancy issued within five years following the manufacture date on the data plate, and be placed on an individual lot.
- Localities may adopt uniform standards applying to all residential structures in the zoning district, but those standards may not exclude manufactured housing compliant with the Virginia Manufactured Housing Construction and Safety Standards Law.
- Restrictive covenants may continue to impose obligations.
- Local zoning and land-use controls that do not affect construction or installation remain in force; site preparation, utility connections, skirting, and maintenance must meet the Uniform Statewide Building Code.
certificate of occupancy deadline from manufacture date: <= 5 years (date listed on the home's data plate) · placement requirement: individual lots
“the placement of manufactured homes shall be permitted for manufactured homes that are (i) converted to real property in accordance with § 46.2-653.1”
§ 15.2-2290. Uniform regulations for manufactured housing ↗Re-checked Sep 21, 2026
Who permits septicState
Statewide supervision and control of onsite sewage systems, alternative discharging sewage systems, and treatment works affecting public health and welfare.
- Local or district health departments administer application, inspection, and permit functions under the statewide framework.
- Alternative discharging sewage systems are also subject to applicable State Water Control Board regulations and permits.
“The Board shall have supervision and control over the safe and sanitary collection, conveyance, transportation, treatment, and disposal of sewage by onsite sewage systems and alternative discharging sewage systems, and treatment works as they affect the public health and welfare.”
§ 32.1-164. Powers and duties of Board; regulations; fees; onsite soil evaluators; letters in lieu of permits; inspections; civil penalty ↗Re-checked Sep 21, 2026
Septic inspectionLimited
Installation of sewage disposal systems statewide.
- For installations not pursuant to a design certified by a licensed professional engineer or onsite soil evaluator, no part may be covered or used until inspected, corrected if necessary, and approved by the district or local health department, unless expressly authorized.
- Installations under a certified professional engineer or onsite soil evaluator design are exempt from the local-health-department inspection requirement in 12VAC5-610-320 and instead require the certifier's inspection report under 12VAC5-610-330.
- The rule is inapplicable to a Type III septage disposal facility.
“This section shall not apply to any sewage disposal system installation that is pursuant to a design certified by a licensed professional engineer or onsite soil evaluator.”
12VAC5-610-320. Inspection and correction ↗Re-checked Sep 21, 2026
Agricultural exemptionConditional
Farm buildings and structures under the Virginia Uniform Statewide Building Code.
- A farm building or structure is not used for residential purposes, is located on property where farming operations take place, and is used primarily for a listed farm use.
- The exemption does not apply to a building or portion of a building on a farm that is operated as a restaurant and licensed by the Board of Health under Chapter 2 (§ 35.1-11 et seq.) of Title 35.1.
- Farm buildings and structures in a flood plain or mudslide-prone area remain subject to applicable flood-proofing or mudslide regulations.
- A qualifying agritourism farm building or structure where the public is invited to enter and which is used for display, sampling, or sale described in § 36-99 must have portable fire extinguishers, a simple written emergency plan, and the required exemption sign.
“Notwithstanding the provisions of this section, farm buildings and structures shall be exempt from the provisions of the Building Code, except for a building or a portion of a building located on a farm that is operated as a restaurant as defined in § 35.1-1 and licensed as such by the Board of Health pursuant to Chapter 2 (§ 35.1-11 et seq.) of Title 35.1.”
Code of Virginia § 36-99. Provisions of Code; modifications ↗Re-checked Sep 21, 2026
Subdividing landRegulated (with conditions)
Subdivision of land and its development in every Virginia locality.
- The governing body of every locality must adopt the ordinance; the resulting subdivision controls are administered through the applicable locality's ordinance.
“The governing body of every locality shall adopt an ordinance to assure the orderly subdivision of land and its development.”
Code of Virginia § 15.2-2240. Localities to adopt ordinances regulating subdivision and development of land ↗Re-checked Sep 21, 2026
Driveway accessRequired
Construction or modification of entrances connecting to VDOT-maintained highways and activities in VDOT highway right-of-way.
- The requirement applies to state-maintained highways and right-of-way under VDOT jurisdiction.
- Entrance location and design must comply with VDOT access-management regulations and design standards.
- Applications are typically obtained through the VDOT district or residency office serving the locality.
- An existing entrance also requires a land-use permit when modified because of a change in land use, traffic volume, or type of traffic.
“Anyone who plans to work or perform an activity on or crossing any right of way under the jurisdiction of the Department must first obtain a land use permit. These include activities such as installation of utilities, construction of private and commercial entrances, landscaping, the temporary use of the right-of-way, as well as numerous other types of activities.”
Land use permits ↗Re-checked Sep 21, 2026
Short-term rentalsLimited
Residential dwelling use as a short-term rental in Virginia.
- Existing local authority to regulate short-term rentals through general land-use and zoning authority is preserved.
- A locality may adopt a registration ordinance, and a registration ordinance may impose a penalty up to $500 per violation for an operator required to register.
- A locality may limit a lessee or sublessee to one short-term rental within the locality.
- For a residential dwelling also legally occupied by the property owner as the primary residence, a local ordinance enacted after December 31, 2023, or a later amendment, may not require a special exception, special use, or conditional use permit for short-term rental use.
- Private contracts, condominium instruments, common-interest-community declarations, cooperative instruments, and property-owners-association declarations are not superseded.
registration penalty: <= 500 USD per violation (Only where a locality adopts a registry ordinance and the operator is required to register.) · owner-occupied primary residence special-use permit prohibition date: > 2023-12-31 (Applies to local ordinances enacted after this date or subsequent amendments.)
“Except as provided in this section, nothing herein shall be construed to prohibit, limit, or otherwise supersede existing local authority to regulate the short-term rental of property through general land use and zoning authority.”
Code of Virginia, Chapter 9. General Powers of Local Governments ↗Re-checked Sep 21, 2026
Campground & park staysLimited
Temporary camping in a Virginia campground regulated under 12VAC5-450.
- Campground construction, renovation, or addition requires plan submission and written approval by the Health Commissioner before construction begins, except that temporary campground owners or operators submit the plans as part of the permit application and do not need separate written plan approval.
- A valid campground permit is required before operation.
- Local plumbing, building, electrical, and zoning ordinances also apply.
- Temporary permits are limited to temporary camping of 14 days duration or less; a temporary permit may be valid for 60 days or less, but total operation may not exceed 14 days during any 60-day period.
temporary camping permit duration: <= 14 days (temporary permit may be valid for 60 days or less, but total days of operation may not exceed 14 days during any 60-day period) · campsite minimum area: >= 1600 square feet · campsite minimum narrowest width: >= 25 feet
“to allow temporary camping of 14 days duration or less.”
12VAC5-450 Rules and Regulations Governing Campgrounds ↗Re-checked Sep 21, 2026
county zoning authorityGeneral
Virginia counties adopting and administering zoning ordinances over unincorporated territory statewide.
- The zoning power is exercised by county governing bodies through ordinance.
- County zoning jurisdiction covers unincorporated territory; incorporated areas are under municipal jurisdiction.
- The statute permits regulation of land uses, structures, dimensional standards, open spaces, and excavation or mining, including residential and flood-plain uses.
“For the purpose of zoning, the governing body of a county shall have jurisdiction over all the unincorporated territory in the county, and the governing body of a municipality shall have jurisdiction over the incorporated area of the municipality.”
§ 15.2-2280. Zoning ordinances generally ↗Re-checked Sep 21, 2026
county building authorityGeneral
Virginia counties administering and enforcing the Uniform Statewide Building Code and issuing building permits for construction, including residential construction, in county jurisdiction.
- Virginia's building code is a Uniform Statewide Building Code adopted by the State Board; it supersedes county building codes and regulations.
- The county's role is local administration and enforcement through a local building department, not independent adoption of a conflicting county building code.
- A county without a building department or local board of Building Code appeals must enter an agreement with another county, municipality, agency, or approved state agency for enforcement and appeals.
- A town with a population of less than 3,500 may elect to administer and enforce the Building Code; if it does not, the county administers and enforces the Code for that town.
- Buildings may be inspected before completion and are not deemed compliant until approved by the inspecting authority; inspections under $2,500 construction cost may be waived at the inspecting authority's discretion.
- Building permit and enforcement fees may be levied by the local governing body.
- Farm buildings and structures are exempt from the Building Code except for a farm building or portion operated as a licensed restaurant; farm buildings in flood plains or mudslide-prone areas remain subject to applicable flood-proofing or mudslide regulations.
small-town population threshold: < 3500 people (The town may elect to administer and enforce the Building Code; otherwise the county administers it for the town.) · inspection-waiver construction cost threshold: < 2500 USD (The inspecting authority may waive inspection at its discretion.)
“Enforcement of the provisions of the Building Code for construction and rehabilitation shall be the responsibility of the local building department. [...] Whenever a county or a municipality does not have such a building department or board of Building Code appeals, the local governing body shall enter into an agreement with the local governing body of another county or municipality or with some other agency, or a state agency approved by the Department for such enforcement and appeals resulting therefrom.”
§ 36-98. Board to promulgate Statewide Code; other codes and regulations superseded; exceptions ↗Re-checked Sep 21, 2026

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

Minimum dwelling size — Minimum dwelling size requirements in unincorporated Montgomery County.
Minimum lot size — Minimum lot size requirements in unincorporated Montgomery County.
Setbacks — Setback requirements in unincorporated Montgomery County.
Lot coverage — Lot coverage requirements in unincorporated Montgomery County.
Building height — Building-height requirements in unincorporated Montgomery County.

5 more unanswered

Living in an RV
Camping on your land
Tiny homes
Accessory dwellings
Off-grid sanitation

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Montgomery County, Virginia

Is Montgomery County a good place to live off-grid or homestead?

Montgomery County scores 65/100 on the Bolthole Index, a strong county profile. Its strengths: a durable current and mid-century hazard profile and manageable long-term carry cost. Watch-outs: more administrative friction around building and land use and about 103,532 people within a 30-minute drive.

Do you need a building permit in Montgomery County, Virginia?

Montgomery County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Virginia Department of Health - New River Health District (Montgomery County Health Department). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Montgomery County, Virginia?

Land in Montgomery County runs about $5,743 per acre, based on the latest county data.

What is the water situation in Montgomery County?

Montgomery County gets about 42.6" of rain a year, with severe drought in roughly 0.7% of years.

How remote is Montgomery County?

A representative private-land location has about 103,532 people within a 30-minute drive and 1,685,945 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

Building permits, zoning and septic rules in Montgomery County, Virginia

At a glance

Who to call

Do you need a building permit in Montgomery County, Virginia?

Who is the Montgomery County building department, and how do you reach them?

Does Montgomery County have zoning?

How do septic permits work in Montgomery County?

Can you live in an RV or tiny home on your land in Montgomery County?

Building a home in Montgomery County: the steps, in order

What to check before you buy land in Montgomery County

Watch-outs

Sources

Montgomery County in Virginia

How Montgomery County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Montgomery County

Montgomery County rules

Virginia rules that apply here

Still unanswered

Living off-grid in Montgomery County, Virginia

Is Montgomery County a good place to live off-grid or homestead?

Do you need a building permit in Montgomery County, Virginia?

How much does land cost in Montgomery County, Virginia?

What is the water situation in Montgomery County?

How remote is Montgomery County?

How Montgomery compares in Virginia