Loudoun County Addition Permit Cost (2026)
Residential addition permit fees in Loudoun County, Virginia, pulled from the Loudoun County Building and Development Residential Fee Schedule (effective July 1, 2022 - the most recent published version on Loudoun's Building and Development site as of November 2026). Loudoun bundles the building permit, the plan review, and the county zoning permit into a single $395 flat fee for residential additions of 1,000 sq ft or less, and Loudoun's published schedule explicitly lists "addition" under this flat-rate path alongside decks and sheds. Loudoun's published fees do not say whether the required 2% Virginia state levy is already included; if it is added on top it adds up to $4.60 (2% of the $100 building permit and $130 plan review, never the $165 zoning permit), so the addition permit cost is $395.00 to $399.60 for any addition of 1,000 sq ft or less, regardless of declared construction value, scope, or whether the addition is a bump-out, sunroom, family-room expansion, or kitchen addition. A 200 sq ft mudroom and an 800 sq ft family room cost the same $395.00 to $399.60 under the published schedule. Additions over 1,000 sq ft fall outside the bundled path and use a 1%-of-construction-value formula plus a separate $335 plan review fee and the county zoning permit, with the 2% levy, if not already included, on the building permit and plan review. Source-age caveat applies - the July 2022 schedule is over three years old as of 2026.
This guide covers: Loudoun County, Virginia residential addition permit fees as published in the Loudoun County Building and Development Residential Fee Schedule (effective July 1, 2022). Coverage includes the bundled $395 flat fee that combines the building permit, plan review, and county zoning permit for residential additions of 1,000 sq ft or less (the path Loudoun's published schedule explicitly assigns to "addition"); the 2% Virginia USBC state levy, which Loudoun's published fees do not show and which can only apply to the $230 building permit and plan review portion ($395.00 to $399.60 total); and a worked-example walkthrough of the over-1,000 sq ft pricing path (1% of declared construction value + $335 separate plan review + county zoning permit + the 2% levy, if not already included) for larger additions that fall outside the bundled flat path.
This guide does NOT cover: Trade permit fees (electrical, plumbing, mechanical) for additions with utility scope - Loudoun does NOT publish itemized residential trade permit fees in PermitPrice's verified data set, and trade permits are filed separately on top of the building permit, with each trade permit also carrying the 2% Virginia state levy; commercial additions or commercial-use conversions of residential space; new accessory dwelling units (ADUs - separate permit path under Loudoun's residential schedule, not covered by the addition line); detached garages or stand-alone outbuildings (use the shed permit guide or the detached garage path); zoning approvals required before permit submission (rear-yard setback, side-yard setback, lot coverage caps, conservation district overlays, BMP stormwater requirements, well/septic upgrades on rural parcels); HOA architectural review (not a county process - check your covenants); the cost of materials, labor, or the addition construction itself; downstream property tax reassessment that follows a permitted addition.
Source-age caveat (read before budgeting): The Loudoun residential fee schedule referenced here is effective July 1, 2022, and is the most recent published version on Loudoun's Building and Development site as of the November 4, 2026 re-verification. Loudoun may have updated rates internally without a new published PDF, or may publish a revised schedule between PermitPrice's verification cycles. Before relying on the $395.00 to $399.60 figure for a load-bearing budget decision on an under-1,000 sq ft addition, or on the 1% + $335 formula for a larger addition, confirm the current bundled rate and the over-1,000 sq ft pricing with Loudoun Building and Development at (703) 777-0220 or through the BD Apply Online portal. PermitPrice will refresh the source.json on the next verification cycle (due March 20, 2027).
Note on the 1,000 sq ft threshold: Loudoun's published schedule splits residential additions into two pricing paths at the 1,000 sq ft boundary (residential alterations are priced on a separate path: 1% of construction cost, minimum $65, plus a $130 plan review fee). Under 1,000 sq ft: bundled $395 flat regardless of declared value. Over 1,000 sq ft: 1%-of-construction-value formula plus a separate $335 plan review fee (the bundled-flat path no longer applies). The threshold is square footage of the addition only, not square footage of the resulting full home. A 200 sq ft mudroom is well within the bundled path; a 1,200 sq ft second-story addition is on the over-1,000 sq ft path. The pricing difference can be large: a $150,000 declared 1,200 sq ft second-story addition runs $1,835.00 to $1,871.70 plus the county zoning permit vs $395.00 to $399.60 if it qualified for the bundled path. Verify with Loudoun Building and Development which path applies before filing a budget.
A residential addition permit in Loudoun County costs $395.00 to $399.60 for any addition of 1,000 sq ft or less - the $395 bundled flat fee (covering the $100 building permit, $130 plan review, and $165 county zoning permit), plus the 2% Virginia state levy on the $230 building permit and plan review portion ($4.60) if it is not already included. Loudoun's published fees do not say whether the required levy is already included, and it never applies to the zoning permit. The fee is size-independent and value-independent below the 1,000 sq ft ceiling: a 200 sq ft mudroom bump-out, a 500 sq ft sunroom, and an 800 sq ft family-room addition all cost $395.00 to $399.60 under the published schedule. Additions over 1,000 sq ft use a different path - 1% of declared construction value + $335 separate plan review + the county zoning permit, with the 2% levy, if not already included, on the permit and plan review. A 1,200 sq ft second-story addition at $150,000 declared runs $1,835.00 to $1,871.70 plus the county zoning permit under the over-1,000 sq ft path. The source schedule is effective July 1, 2022 - verify with Building and Development before relying on this figure for budgeting.
- Loudoun's residential addition permit splits at the 1,000 sq ft boundary into two pricing paths. Under 1,000 sq ft: bundled flat $395 (building permit + plan review + zoning permit), $395.00 to $399.60 with the 2% Virginia state levy on the permit and plan review portion, regardless of declared construction value. Over 1,000 sq ft: 1% of declared value building permit + $335 separate plan review + county zoning permit, with the 2% levy, if not already included, on the permit and plan review.
- For typical residential additions of 1,000 sq ft or less (mudrooms, sunrooms, family-room expansions, master-suite bump-outs, kitchen additions), the fee is a flat $395, or $395.00 to $399.60 with the levy. A 200 sq ft mudroom and an 800 sq ft family room both cost the same $395.00 to $399.60 under the published schedule - the bundled-flat structure produces predictable pricing but does not reward smaller additions or penalize larger ones below the 1,000 sq ft threshold.
- For additions over 1,000 sq ft (large second-story additions, primary-suite over garage, multi-room family-room + bedroom + bath addition), the 1% + $335 path applies. A $150,000 declared 1,200 sq ft second-story addition runs approximately $1,500 building permit + $335 plan review = $1,835 subtotal, plus up to $36.70 levy, for $1,835.00 to $1,871.70 plus the county zoning permit. The over-1,000 path scales with declared construction value and adds the separate plan review.
- The 2% Virginia state levy is required by Code of Virginia Section 36-137 and USBC Section 107.2. It can apply only to building-code fees (at most the $100 building permit and $130 plan review under the bundled path, or the 1% + $335 under the over-1,000 path), never to the county zoning permit. Loudoun's published fees do not say whether that levy is already included or whether it is charged on plan review, so PermitPrice shows each Loudoun total as a range: the published amount up to 2% more on the building permit and plan review portion (the levy never applies to the zoning permit). The levy is a state-collected pass-through to the Virginia Department of Housing and Community Development - same statutory authority every Virginia jurisdiction operates under.
- Trade permits (electrical, plumbing, mechanical) for additions with new circuits, fixtures, or HVAC equipment are filed SEPARATELY in Loudoun on top of the building permit. Loudoun does NOT publish itemized residential trade permit fees in PermitPrice's verified data. A typical mid-range family-room addition might include one electrical permit (range $135-$400 in most DMV jurisdictions), one plumbing permit if a wet bar or half-bath is added (similar range), and one mechanical permit if HVAC ductwork is extended. Each trade permit also carries the 2% Virginia state levy. Verify trade permit costs directly with Loudoun Building and Development at (703) 777-0220.
- The "declared construction value" field on the Loudoun addition permit application is collected but does not change the bundled fee at 1,000 sq ft or less. Under the over-1,000 sq ft path, declared value directly drives the 1% building permit fee math, so honest declaration matters significantly. Under-declaring construction value on a large addition can save permit money short-term but can trigger administrative correction requests, re-inspection delays, or downstream property assessment complications. Inspectors typically verify declared value against the as-built scope.
- Loudoun's bundled flat fee at 1,000 sq ft or less is jurisdiction-unique in the DMV - no other verified Virginia county or city combines building permit, plan review, AND zoning permit into a single bundled fee at this scale. The structure produces predictable pricing for typical residential additions but lands more expensive than value-based jurisdictions like Henrico County (capped at $693.60 all-in) or Richmond City (uncapped value formula) for low-value additions, and more expensive than Fairfax County, which prices additions per square foot under Appendix Q FY2027 ($0.15 per sq ft wood frame, $141.75 minimum permit) and lands at $158.77 all-in for any wood-frame addition up to 945 sq ft.
- For a $50,000 declared family-room addition of 1,000 sq ft or less, Loudoun's $395.00 to $399.60 sits in the upper middle of the DMV. Virginia Beach charges approximately $121.70 for a 500 sq ft heated addition with counter plan review. Henrico County charges $377.40 ($100 + 45 x $6 + 2% levy). Chesterfield County charges $456.98 (flat $399 + $50 EE + 2% levy). Fairfax County charges $158.77 for a 500 sq ft addition ($141.75 minimum area-based permit + $2.84 levy + $14.18 technology surcharge - FY2027 prices additions by area, not value). Richmond City charges approximately $361.45 (uncapped value formula). See the Virginia addition permit guide for the full cross-jurisdiction comparison.
Loudoun Addition Permit Fee Components
Loudoun's residential addition permit fee splits into two distinct component structures depending on whether the addition is under or over 1,000 sq ft. Under 1,000 sq ft, the bundled $395 flat building permit + plan review + zoning permit is a single line, and the required 2% Virginia state levy, if not already included, applies only to the $230 building permit and plan review portion - the same $395.00 to $399.60 regardless of declared construction value. Over 1,000 sq ft, the building permit becomes 1% of declared construction value, a separate $335 plan review fee is added, the county zoning permit is separate (not included below), and the 2% levy, if not already included, applies to the permit and plan review subtotal. Virginia requires a 2% state levy on building-code permit fees (USBC Section 107.2), but Loudoun's published fees do not say whether that levy is already included or whether it is charged on plan review, so PermitPrice shows each Loudoun total as a range: the published amount up to 2% more on the building permit and plan review portion (the levy never applies to the zoning permit). The breakdown below shows component math at both pricing paths.
| Component | 200 sq ft mudroom ($25k) | 500 sq ft sunroom ($50k) | 800 sq ft family room ($80k) | 1,200 sq ft second-story ($150k) |
|---|---|---|---|---|
| Bundled building permit (under 1,000 sq ft path) | $395.00 | $395.00 | $395.00 | N/A (over-threshold) |
| 1% building permit (over 1,000 sq ft path) | N/A | N/A | N/A | $1,500.00 |
| Separate plan review (over 1,000 sq ft only) | N/A (bundled) | N/A (bundled) | N/A (bundled) | $335.00 |
| Building permit subtotal | $395.00 | $395.00 | $395.00 | $1,835.00 |
| 2% Virginia state levy (upper bound, permit + plan review only) | $0 to $4.60 | $0 to $4.60 | $0 to $4.60 | $0 to $36.70 |
| All-in addition permit total | $395.00 to $399.60 | $395.00 to $399.60 | $395.00 to $399.60 | $1,835.00 to $1,871.70 + zoning |
Source: Loudoun County Building and Development Residential Fee Schedule (effective July 1, 2022 - most recent published version). The bundled $395 flat fee combines the building permit, plan review, and county zoning permit for residential additions of 1,000 sq ft or less; the published schedule lists "addition" under this flat-rate path. The 1%-of-construction-value formula plus the $335 separate plan review applies to additions over 1,000 sq ft. The 2% state levy is required by Code of Virginia Section 36-137 and USBC Section 107.2; Loudoun's published fees do not show it; PermitPrice treats it as an upper bound on the building permit and plan review portion only (the $165 zoning permit inside the $395 bundle is not a building-code permit fee and carries no levy). The county zoning permit on the over-1,000 path is not included. Trade permit fees (electrical, plumbing, mechanical) are excluded - Loudoun does not publish itemized residential trade permit fees in PermitPrice's verified data.
Worked Examples - Real Addition Projects in Loudoun County
The first three worked examples below all return $395.00 to $399.60 because the bundled flat fee is size-independent and value-independent under the 1,000 sq ft ceiling. The fourth example crosses the 1,000 sq ft threshold and uses the 1% + $335 path. The declared construction value should reflect the honest contractor invoice or materials-plus-labor figure - under-declaring saves nothing under the bundled path and risks administrative complications under the over-1,000 sq ft path where declared value directly drives the math.
A homeowner extends the kitchen rear wall by 200 sq ft to add a mudroom with cubbies, a coat closet, and a tile floor. New exterior wall, new roof framing, one window, one exterior door, and minor electrical (two outlets, two overhead lights wired to a switch on existing circuits). Total addition area: 200 sq ft. Contractor invoice: $25,000 (framing, finish work, basic finishes).
- Addition area: 200 sq ft (well under the 1,000 sq ft bundled threshold)
- Declared value: $25,000 (recorded but does not change the fee)
- Bundled building permit + plan review + zoning permit: $395.00
- 2% Virginia state levy on the $230 permit + plan review portion, if not already included: $0 to $4.60
- Building permit total: $395.00 to $399.60
Note: the electrical work for the mudroom (two outlets, two lights on existing circuits) likely requires a separate residential electrical permit on top of the $395.00 to $399.60 building permit. Loudoun does not publish itemized trade permit tiers in PermitPrice's verified data - verify trade permit cost directly with Loudoun Building and Development at (703) 777-0220 before total project budgeting.
A homeowner adds a 500 sq ft glass-roof sunroom on a slab foundation off the rear of the home. New exterior walls (three sides glass curtain wall), engineered roof structure, four overhead lights with switches, three outlets, and zoned mini-split HVAC. Total addition area: 500 sq ft. Contractor invoice: $50,000 (premium glazing, finish flooring, HVAC, electrical rough-in).
- Addition area: 500 sq ft (still under the 1,000 sq ft bundled threshold)
- Declared value: $50,000 (recorded but does not change the fee)
- Bundled building permit + plan review + zoning permit: $395.00
- 2% Virginia state levy on the $230 permit + plan review portion, if not already included: $0 to $4.60
- Building permit total: $395.00 to $399.60
Note: this $50,000 sunroom would cost $377.40 in Henrico County ($100 + 45 x $6 = $370 + 2% levy = $377.40), $361.45 in Richmond City ($63 + 48 x $6.07 = $354.36 + 2% levy = $361.45), and $158.77 in Fairfax County (500 sq ft x $0.15 = $75, below the $141.75 minimum permit, x 1.12 for the levy and technology surcharge). Loudoun's $395.00 to $399.60 lands in the upper-middle of the DMV. Trade permits for the electrical and HVAC scope are not included and would add separately.
A homeowner adds an 800 sq ft single-story addition combining a family room and a bedroom off the rear of the home. New foundation, framed exterior walls, full roof structure, six windows, two exterior doors, full electrical (eight circuits, ceiling fans, overhead lighting, eleven outlets), and zoned forced-air HVAC extension. Total addition area: 800 sq ft. Contractor invoice: $80,000 (full-build addition, finished interior, HVAC, electrical, finish carpentry).
- Addition area: 800 sq ft (still under the 1,000 sq ft bundled threshold)
- Declared value: $80,000 (recorded but does not change the fee)
- Bundled building permit + plan review + zoning permit: $395.00
- 2% Virginia state levy on the $230 permit + plan review portion, if not already included: $0 to $4.60
- Building permit total: $395.00 to $399.60
Note: Fairfax County no longer prices additions by value. Under Appendix Q FY2027 (effective July 1, 2026) the same 800 sq ft addition is area-based: 800 x $0.15 = $120, below the $141.75 minimum permit, so Fairfax lands at $158.77 all-in ($141.75 + $2.84 levy + $14.18 technology surcharge) regardless of the $80,000 declared value. Loudoun's $395.00 to $399.60 is roughly 2.5 times the Fairfax price for the same project. Loudoun's bundled path is structurally favorable against the value-based jurisdictions (Richmond, Henrico, DC) at high declared values, not against Fairfax. Trade permits not included.
A homeowner builds a 1,200 sq ft second-story addition over the existing ranch home - new master suite with sitting room, two secondary bedrooms, a full bath, and a half bath. Structural steel reinforcement of the existing first-floor framing, new staircase, full electrical (twelve circuits), full HVAC second zone with new air handler, full plumbing (two full baths + half bath rough-in). Total addition area: 1,200 sq ft. Contractor invoice: $150,000 (structural retrofit, framing, exterior shell, full mechanical, full plumbing, full electrical, interior framing, drywall, paint, finished flooring).
- Addition area: 1,200 sq ft (crosses the 1,000 sq ft threshold)
- Declared value: $150,000 (load-bearing under the 1% formula)
- 1% building permit: $150,000 x 0.01 = $1,500.00
- Separate plan review fee: $335.00
- County zoning permit: separate, not included
- Building permit subtotal: $1,835.00
- 2% Virginia state levy on $1,835, if not already included: $0 to $36.70
- Building permit total: $1,835.00 to $1,871.70 plus the county zoning permit
Note: this is the structural pricing flip when a Loudoun addition crosses the 1,000 sq ft threshold. The same $150,000 second-story addition would cost $201.60 all-in in Fairfax County (1,200 sq ft x $0.15 = $180 area-based permit, x 1.12 for the levy and technology surcharge - Fairfax is structurally cheapest for high-value additions because its fee ignores declared value), $693.60 in Henrico County (caps at $680 building permit + $13.60 levy), and $980.59 in Richmond City (uncapped $63 + $6.07/$1k formula). Loudoun's over-1,000 path lands above Richmond, Henrico and Fairfax at this scale; Fairfax's area-based $201.60 is the structural winner for any high-value addition. Trade permits, plumbing fixture permits, and the HVAC second-zone permit are not included and would add separately on top of the $1,835.00 to $1,871.70 and the county zoning permit.
Calculate Your Loudoun Addition Permit
The PermitPrice fee calculator supports Loudoun County's bundled flat-fee approach directly for additions of 1,000 sq ft or less. Pick "Loudoun County, VA" in the calculator; there is no separate Addition option for Loudoun, but the Deck, Porch and Shed options use the same published $395 bundle and return $399.60, the top of the $395.00 to $399.60 range, because the bundled fee does not scale with declared construction value or footprint within the under-1,000 path. The over-1,000 sq ft path (1% of value + $335 PR + county zoning permit + the 2% levy, if not already included) is documented in this guide with worked-example math but is not currently wired into the calculator UI as a primary path - confirm pricing with Loudoun Building and Development for any addition that crosses the 1,000 sq ft threshold.
Calculator coverage for Loudoun additions: the bundled $395 flat building permit + plan review + zoning permit, plus the 2% Virginia state levy, if not already included, on the permit and plan review portion, is calculator-supported through the Deck, Porch and Shed options, which use the same bundle. The over-1,000 sq ft path (1% + $335 PR) is documented here but not currently wired as a primary calculator path - confirm with Loudoun Building and Development at (703) 777-0220 for additions over 1,000 sq ft.
Open the Permit Fee CalculatorTrade Permits for Additions in Loudoun
Residential additions with electrical, plumbing, or mechanical scope require separate trade permits beyond the building permit in every Virginia jurisdiction. Loudoun is not an exception - most additions include new electrical circuits, light fixtures, and HVAC ductwork, and additions with kitchens, bathrooms, or wet bars also require plumbing permits. Each trade permit is filed separately and carries the 2% Virginia state levy on top of its trade fee.
Itemized residential trade permit fees for Loudoun are NOT in PermitPrice's verified data. Loudoun's residential fee schedule (effective July 1, 2022) bundles the building permit, plan review, and zoning permit for sub-1,000 sq ft additions into the $395 flat fee, but does NOT include itemized electrical, plumbing, or mechanical trade permit tiers for residential work in the source.json record PermitPrice maintains. Verify trade permit costs directly with Loudoun Building and Development at (703) 777-0220 or through the BD Apply Online portal before budgeting any addition with utility scope.
For rough budgeting only (not verified Loudoun-specific trade-permit data), DMV-area residential trade permit fees typically run $135-$400 per trade depending on amperage, fixture count, or zone count. A typical $50,000 sunroom addition with electrical + HVAC trade permits could add $300-$700 on top of the $395.00 to $399.60 building permit. A typical $80,000 family-room addition with electrical + HVAC + minor plumbing could add $400-$900. Treat any trade permit cost as an estimate until confirmed directly with Loudoun. PermitPrice will refresh the Loudoun source.json with itemized trade permit data on the next verification cycle if the published schedule expands its residential trade detail.
Loudoun Addition Permit Cost vs Virginia Neighbors and DC
Loudoun's bundled $395 flat fee at 1,000 sq ft or less is structurally unique in the DMV. The table below compares the all-in cost of a typical $50,000-$80,000 declared family-room addition of 1,000 sq ft or less across DMV jurisdictions. Loudoun's predictability favors smaller and mid-range additions against the value-based jurisdictions (Henrico, Richmond, DC) at high declared values; Fairfax County, which prices additions per square foot under Appendix Q FY2027, is cheaper than Loudoun for any sub-1,000 sq ft addition.
| Jurisdiction | Addition Pricing Method | $50k-$80k Addition Under 1,000 sq ft |
|---|---|---|
| Loudoun County | Bundled $395 flat + the 2% levy, if not already included, on $230 | $395.00 to $399.60 |
| Virginia Beach | $50 + $7/100 sq ft heated + $25 counter PR + $10 tech + 2% levy | $121.70-$203.84 |
| Richmond City | $63 + $6.07/$1,000 over $2,000 + 2% levy | $361.45-$547.19 |
| Henrico County | $100 + $6/$1,000 over $5,000 (cap $680) + 2% levy | $377.40-$561.00 |
| Chesterfield County | $399 flat + $50 EE + 2% levy | $456.98 |
| Norfolk City | $0.15/sq ft + tiered PR + $15 + 2% levy | $126.50-$625.50 |
| Fairfax County | $0.15/sq ft (min $141.75) + 2% levy + 10% tech | $158.77 |
| Washington, DC | 4-tier alteration formula + 10% Enhanced + 0.13% GBF | $1,233.10-$1,937.36 |
"$50k-$80k addition of 1,000 sq ft or less" assumes a typical mid-range residential addition of 1,000 sq ft or less at $50,000-$80,000 declared construction value. Building permit only - trade permits excluded across all jurisdictions. Virginia Beach's range reflects $121.70 for 500 sq ft heated addition with counter PR up to $203.84 for 800 sq ft heated. Richmond's range reflects $50k-$80k declared at the $63 + $6.07/$1k formula. Henrico's range reflects $50k-$80k declared at the $100 + $6/$1k formula. Norfolk's range reflects 500 sq ft heated ($126.50) up to 800 sq ft heated ($188.60 at the formula) - the $625.50 figure reflects a 3,500 sq ft heated addition for a tier comparison. Fairfax's $158.77 reflects the area-based FY2027 formula: 500-800 sq ft x $0.15 falls below the $141.75 minimum permit, so the floor of $141.75 + 2% levy + 10% technology surcharge applies regardless of declared value. DC's range reflects the Tier 3 alteration formula ($30 + 2% of value over $1k) plus 10% Enhanced plus 0.13% GBF + 10% Enhanced. Virginia requires a 2% state levy on building-code permit fees (USBC Section 107.2), but Loudoun's published fees do not say whether that levy is already included or whether it is charged on plan review, so PermitPrice shows each Loudoun total as a range: the published amount up to 2% more on the building permit and plan review portion (the levy never applies to the zoning permit).
For a full breakdown of how Loudoun and other Virginia jurisdictions price additions, see the statewide guide.
Frequently Asked Questions
Sources
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Loudoun County Building and Development - Residential Fee Schedule Effective July 1, 2022 (FY2023) - Loudoun County Government - Primary source for the bundled $395 flat fee covering building permit, plan review, and county zoning permit for residential additions of 1,000 sq ft or less, and for the 1%-of-construction-value formula plus the $335 separate plan review fee for additions over 1,000 sq ft. Source schedule is the most recent published Loudoun residential version as of the November 4, 2026 re-verification - source-age caveat applies; this schedule is over three years old as of 2026. Caveat
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Loudoun BD Apply Online - Permit Portal Accessed April 5, 2026 - Loudoun County Building and Development - Official online portal for submitting building, electrical, plumbing, and mechanical permits in Loudoun; the destination for verifying current bundled-flat vs over-1,000 sq ft pricing classification and for confirming trade permit costs not itemized in PermitPrice's source data
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Code of Virginia Section 36-137 - USBC State Levy Authority Current - Virginia General Assembly - Authorizing statute for the statewide 2% building permit surcharge applied in Virginia jurisdictions, which PermitPrice treats as an upper bound on Loudoun's building permit and plan review fees (up to $4.60 on the $230 permit and plan review portion of the $395 bundle; never on the county zoning permit), because Loudoun's published fees do not show it
Calculate your specific Loudoun addition permit cost, see all Loudoun fee categories, or compare against Virginia neighbors.