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Fairfax County Shed Permit Cost (2026)

Storage shed permit fees in Fairfax County, Virginia, pulled from the official Appendix Q Land Development Services Fee Schedule (FY2025, effective July 1, 2024). Fairfax does not require a building permit for residential storage sheds 256 square feet or under that have no plumbing or electrical scope - most pre-fab garden sheds from big-box retailers fall under this exemption. Sheds over 256 sq ft, or any shed (regardless of size) that includes plumbing or electrical work, require a building permit. Fairfax's shed permit uses the same percentage-of-construction-value formula as the residential alteration and repair tier: 3% of declared construction value with a $72 minimum building permit fee, plus 50% plan review, plus the 2% Virginia state levy on the combined subtotal. For a 260 sq ft storage shed with electrical at $12,000 declared value, the all-in building permit cost is $550.80. Smaller permit-required sheds bottom out at the minimum fee of $110.16 all-in.

Under 256 sq ft (no utilities)
No permit required - $0
Over 256 sq ft or with utilities
3% of value + 50% PR + 2% levy
Minimum All-In Fee
$110.16 ($72 + $36 + $2.16)
260 sq ft Shed, $12k declared
$550.80 all-in
Last Verified
March 15, 2026
Fee Status
Appendix Q FY2025
What This Guide Covers - and What It Does Not

This guide covers: Fairfax County, Virginia residential storage shed permit fees as published in the Appendix Q Land Development Services Fee Schedule (FY2025, effective July 1, 2024). Coverage includes the 256 sq ft exemption threshold and its conditions (no plumbing, no electrical), the 3% residential percentage-of-construction-value formula that governs permit-required sheds, the $72 minimum building permit fee, the 50% plan review surcharge, the 2% Virginia state levy applied to the building permit + plan review subtotal, and the relationship between the building permit and the separately-filed electrical, plumbing, and mechanical trade permits.

This guide does NOT cover: Detached garages (treated as new construction under the Fairfax garage_new fee schedule with sq-ft-based pricing by construction type, not the shed alteration formula); accessory dwelling units or ADUs (separate scope, see Fairfax ADU treatment on the jurisdiction page); commercial storage structures; zoning approvals required before permit submission (rear-yard setback, side-yard setback, lot-coverage analysis, conservation district overlays for Mount Vernon and other historic areas); Resource Protection Area (RPA) review for properties near Bull Run, Pohick Bay, or other RPA-designated streams; HOA architectural review (not a county process - check your HOA covenants); the cost of the shed itself or installation labor; or trade permit costs (electrical, plumbing) which are filed separately and itemized by amperage tier, fixture count, or zone count per the Appendix Q trade permit schedules.

Shed-vs-garage classification: A "shed" under Appendix Q is a single-use storage structure - typical lawn-and-garden tool storage, pre-fab garden sheds, kit-built workshops with no vehicle access. A detached structure with garage doors, vehicle ramps, or designed parking spaces is classified as a new garage under the new construction sq-ft formula ($0.143 per sq ft VA/VB wood frame for the building permit). If the Fairfax inspector classifies a "shed" application as a garage during plan review, expect the fee structure to switch to sq-ft pricing. Confirm scope with Land Development Services at (703) 222-0801 before filing if you are uncertain.

Note on the $5,000 electrical sub-permit threshold: If your shed includes electrical work that exceeds basic outlet installation, the electrical sub-permit is filed separately at its own tier ($341-$633 depending on residential amperage tier per the Appendix Q electrical schedule), plus its own 2% state levy. The $550.80 worked example for a 260 sq ft shed includes the building permit but excludes the electrical sub-permit cost; budget an additional $341 minimum for the electrical permit if the shed has any new circuits.

Key Takeaways
  • Sheds 256 square feet or under with no plumbing or electrical are EXEMPT from building permit requirements in Fairfax County. This covers most pre-fab garden sheds, plastic resin sheds, and kit-built lawn sheds sold by big-box retailers. Zoning still applies (setbacks, lot coverage), but no building permit fee is owed.
  • Sheds over 256 sq ft, or any shed (regardless of size) with plumbing or electrical, REQUIRE a permit. The fee uses Fairfax's residential 3% percentage-of-construction-value formula: 3% of declared value, $72 minimum building permit, 50% plan review surcharge, 2% Virginia state levy on the combined subtotal.
  • Minimum all-in shed permit fee: $110.16 ($72 building permit + $36 plan review + $2.16 levy). Applies to permit-required sheds with declared construction value under $2,400 (where 3% of declared value would fall below the $72 minimum).
  • Worked example from Appendix Q: 260 sq ft storage shed with electrical, $12,000 stated valuation = $360 (3% x $12k) + $180 (50% plan review) + $10.80 (2% levy on $540) = $550.80 all-in. This is the Fairfax-published worked example for the shed category.
  • Electrical sub-permit is required and filed separately whenever the shed has any electrical work. Fairfax electrical permits are tiered by residential amperage (0-149 amp = $341, 150-399 amp = $378, 400-599 amp = $429). Even a single lighting circuit in a shed requires the electrical permit. The minimum electrical permit fee is $135.
  • Plumbing sub-permit follows the same logic. Fairfax plumbing tiers are 1-5 fixtures ($340), 6-15 fixtures ($466), 16-30 fixtures ($601), 31+ fixtures ($780). A shed with a single utility sink and water connection counts as 1-5 fixtures and adds $340 + 2% levy = $346.80 to the project total.
  • Trade permit additions land hard: a 260 sq ft shed with one circuit and one fixture goes from $550.80 (building permit only) to $550.80 + $341 electrical + $340 plumbing + $13.62 trade levy = roughly $1,245.42 all-in. The shed building permit is one of several line items; trade permits typically exceed the shed permit itself.
  • Fairfax's percentage-of-value structure is structurally more expensive than flat-fee jurisdictions for the same shed. Chesterfield County charges $166.28 all-in for a 257-400 sq ft shed (flat $114 + $50 site fee + 2% levy). Norfolk City charges $101.00 all-in for a 320 sq ft shed (accessory structure $50 min + $35 plan review + $15 processing + $1 levy). See the Virginia shed permit guide for the full cross-jurisdiction comparison.
Calculate Your Shed Permit All Fairfax Permit Fees

Fairfax Shed Permit Fee Components

A Fairfax permit-required shed permit is built from three components: the building permit fee (3% of declared value or $72 minimum), the plan review fee (50% of the building permit), and the 2% Virginia state levy applied to the building permit + plan review subtotal. Trade permits (electrical, plumbing, mechanical) are separate filings with their own tier structures and their own levy.

Component $2,000 declared $12,000 declared (260 sq ft electrical) $25,000 declared (400 sq ft workshop)
Building permit (3% of value, min $72) $72.00 min $360.00 $750.00
Plan review (50% of building permit) $36.00 $180.00 $375.00
2% Virginia state levy $2.16 $10.80 $22.50
All-in building permit total $110.16 $550.80 $1,147.50

Source: Fairfax County Appendix Q Land Development Services Fee Schedule (FY2025, effective July 1, 2024). The 3% formula and $72 minimum apply to the shed category as documented in Appendix Q. Plan review at 50% of the building permit fee is the published Fairfax convention for all percentage-of-value categories. The 2% state levy is required by Code of Virginia Section 36-139. Trade permit additions (electrical, plumbing) excluded from totals above.

Worked Examples - Real Shed Projects in Fairfax County

Each example shows arithmetic from the Appendix Q FY2025 fee schedule. Fairfax's shed fee scales with declared construction value above the $2,400 threshold (where 3% equals the $72 minimum). Below that threshold the minimum building permit applies and the shed fee bottoms out at $110.16 all-in.

Example 1: 192 sq ft pre-fab garden shed (PERMIT-EXEMPT)

A homeowner installs an 8 x 24 foot pre-fab plastic resin garden shed from a big-box retailer. The shed has no electrical, no plumbing, no built-in workbench requiring permanent power. Total floor area: 192 sq ft.

  • Floor area: 192 sq ft (under the 256 sq ft threshold)
  • Plumbing or electrical: None
  • Permit required: No
  • Building permit fee: $0.00
  • Total: $0.00

Note: although a building permit is not required, zoning setbacks still apply. Fairfax typically requires a minimum 8 ft side-yard setback and 15 ft rear-yard setback for accessory structures, but exact distances vary by zoning district. Verify with Land Development Services at (703) 222-0801 before placing the shed.

Example 2: 260 sq ft storage shed with electrical at $12,000 declared (Appendix Q published example)

A homeowner builds a 10 x 26 foot stick-framed storage shed with two 15-amp lighting circuits and a duplex outlet for a battery charger. The contractor invoice is $12,000 (materials and labor combined). Total floor area: 260 sq ft - just over the 256 sq ft threshold, and electrical scope triggers the permit regardless of size.

  • Floor area: 260 sq ft (over the 256 sq ft threshold; permit required)
  • Electrical: yes (permit also required regardless of size due to electrical scope)
  • Declared value: $12,000
  • Building permit (3% of $12,000): $360.00
  • Plan review (50% of $360): $180.00
  • Subtotal: $540.00
  • 2% Virginia state levy on $540: $10.80
  • Total building permit: $550.80

Note: this $550.80 is for the building permit only. The electrical sub-permit is filed separately at $341 (0-149 amp tier) plus 2% levy = $347.82, bringing the combined project total to approximately $898.62. This is the worked example published by Fairfax in the Appendix Q project_permit_status.shed line.

Example 3: 400 sq ft detached workshop shed, full utilities, $25,000 declared

A homeowner builds a 20 x 20 foot detached workshop shed with HVAC mini-split for climate control, dedicated 240V circuit for power tools, sink and water connection. Contractor invoice $25,000 (materials and labor combined).

  • Floor area: 400 sq ft (over 256 sq ft threshold; permit required)
  • Declared value: $25,000
  • Building permit (3% of $25,000): $750.00
  • Plan review (50% of $750): $375.00
  • 2% Virginia state levy on $1,125: $22.50
  • Building permit subtotal: $1,147.50

Trade permit additions:

  • Electrical permit (150-399 amp tier; 240V circuit triggers higher tier): $378.00 + $7.56 levy = $385.56
  • Plumbing permit (1-5 fixtures - sink + water connection): $340.00 + $6.80 levy = $346.80
  • Mechanical permit (1-zone HVAC for mini-split): $135.00 + $2.70 levy = $137.70
  • Trade subtotal: $870.06

Combined permit total: $2,017.56

Note: high-utility workshop sheds frequently end up with combined permit costs over $2,000 once trade permits stack onto the building permit. The structural shell is the cheaper line; HVAC, electrical, and plumbing tier into more substantial fees.

Example 4: 280 sq ft simple storage shed at $4,000 declared (minimum-fee territory)

A homeowner builds a 10 x 28 foot simple wood-frame storage shed with no electrical, no plumbing, no HVAC. Permit is still required because the shed exceeds 256 sq ft. Contractor invoice $4,000 (lumber, hardware, basic labor).

  • Floor area: 280 sq ft (over 256 sq ft threshold)
  • Declared value: $4,000
  • Building permit (3% of $4,000): $120.00 (above $72 minimum)
  • Plan review (50% of $120): $60.00
  • 2% Virginia state levy on $180: $3.60
  • Total building permit: $183.60

Note: at $4,000 declared the 3% formula yields $120, which is above the $72 minimum so the formula applies. Below $2,400 declared the $72 minimum kicks in and the all-in fee floor is $110.16. No trade permits required for utility-free sheds.

Calculate Your Fairfax Shed Permit

The PermitPrice fee calculator supports Fairfax County's residential 3% percentage-of-value formula directly. Pick "Fairfax County, VA" and "Shed" in the calculator dropdowns, then enter your contractor's invoice amount (or your best estimate of materials + labor). The calculator returns the all-in building permit cost broken down by component. Trade permits (electrical, plumbing, mechanical) are not modeled in the cost-only calculator UI - file those separately with your sub-contractors.

Calculator coverage for Fairfax sheds: the 3% formula plus 50% plan review plus 2% state levy is calculator-supported. The 256 sq ft exemption decision (permit required or not) is not modeled - confirm scope with Land Development Services before assuming you need a permit. Sheds under 256 sq ft with no plumbing or electrical do not file a permit at all.

Open the Permit Fee Calculator

Trade Permits Fairfax Requires for Utility Sheds

Sheds with any electrical, plumbing, or HVAC scope require separate trade permits beyond the building permit. Fairfax tiers electrical by amperage, plumbing by fixture count, and mechanical by zone count. Each trade permit also carries the 2% Virginia state levy. These are separate filings, separate fees, separate inspections.

Trade Permit Component Fairfax Fee Range When It Applies to a Shed
Electrical 0-149 amp (residential tier) $341 + 2% levy = $347.82 Lighting circuit, outlet, or low-amperage power for a tool charger; minimum tier for residential shed electrical
Electrical 150-399 amp $378 + 2% levy = $385.56 240V circuit for power tools, mini-split HVAC outdoor unit power, or larger sub-panel
Plumbing 1-5 fixtures $340 + 2% levy = $346.80 Sink, water connection, hose bib if permanent. Counts the fixture (sink) plus the device (hose bib) plus the water supply line as fixtures - typically falls in the 1-5 tier.
Plumbing 6-15 fixtures $466 + 2% levy = $475.32 Workshop with sink, water heater, hose bibs, floor drain, dishwasher; unusual for sheds
Mechanical 1-zone HVAC $135 + 2% levy = $137.70 Mini-split heat pump or window unit hardwired in shed for climate control
Mechanical 2-zone HVAC $264 + 2% levy = $269.28 Two zones (workshop + storage area) climate-controlled separately; unusual for sheds
Minimum electrical / plumbing / mechanical permit fee $135 + 2% levy = $137.70 Applies if the tiered fee falls below the $135 floor; rare in residential sheds since the lowest tier is already $135-$341

Source: Fairfax County Appendix Q Land Development Services Fee Schedule (FY2025), Electrical (tiered by amperage), Plumbing (tiered by fixture count), and Mechanical (tiered by zone count) sections. All tier fees verified March 15, 2026 against the official PDF on fairfaxcounty.gov/landdevelopment.

Fairfax Shed Permit Cost vs Virginia Neighbors

Fairfax's 3% percentage-of-construction-value formula makes it more expensive than flat-fee Virginia jurisdictions for sheds at any declared value above approximately $4,000. The structural reason: Fairfax applies a 1.5x plan review multiplier and the 2% state levy on the combined building permit + plan review subtotal, yielding a 4.59% effective rate on declared value. Flat-fee jurisdictions ignore declared value entirely.

Jurisdiction Shed Pricing Method 260 sq ft Shed ($12k) All-In
Fairfax County 3% + 50% PR + 2% levy $550.80
Loudoun County Bundled $395 + 2% levy $402.90
Chesterfield County $114 flat (257-400) + $50 EE + 2% levy $166.28
Henrico County $100 + $6/$1,000 over $5,000 (capped $680) $144.84
Norfolk City Accessory $0.15/sq ft ($50 min) + $35 PR + $15 + 2% levy $101.00
Richmond City $63 + $6.07/$1,000 over $2,000 + 2% levy $126.94
Washington, DC $65 flat + 10% Enhanced $71.50

"260 sq ft shed ($12k) all-in" assumes a 260 sq ft shed with electrical at $12,000 declared construction value. Building permit only - trade permits (electrical at $341+ in Fairfax) excluded because they vary by amperage and fixture count. The Norfolk figure uses the accessory structure formula at $0.15/sq ft hitting the $50 minimum since 260 sq ft x $0.15 = $39. The Henrico figure assumes the shed value triggers the $100 + $6/$1k over $5k formula. DC is the cheapest verified DMV jurisdiction for residential sheds (flat $65 + 10% = $71.50).

Side-by-Side Math

For a full breakdown of how Fairfax and other Virginia jurisdictions price sheds, see the statewide guide.

Frequently Asked Questions

Fairfax County requires a building permit for residential sheds only when the structure exceeds 256 square feet OR when the shed includes plumbing or electrical scope. Pre-fab garden sheds 256 sq ft and under with no utilities are exempt - no fee, no permit. Sheds over 256 sq ft, or any shed with electrical or plumbing, require a permit and pay 3% of declared construction value (minimum $72 building permit) + 50% plan review + 2% Virginia state levy. The published worked example: a 260 sq ft storage shed with electrical at $12,000 declared value costs $550.80 all-in for the building permit.
For permit-required sheds, Fairfax's minimum building permit fee is $72. With the 50% plan review surcharge ($36) and 2% Virginia state levy ($2.16 on $108), the minimum all-in fee is $110.16. The $72 minimum applies when 3% of declared construction value falls below $72 (declared value under $2,400). Most permit-required sheds in Fairfax cost between $110.16 (minimum-fee territory) and $1,147.50 (400 sq ft workshop at $25,000 declared). Above $25,000 declared value the formula keeps scaling linearly: a $50,000 luxury workshop shed building permit would be $1,500 + $750 + $45 = $2,295 all-in.
Fairfax uses a 3% percentage-of-construction-value formula with a 50% plan review surcharge, yielding an effective 4.59% rate on declared value once the 2% state levy is added. Chesterfield County charges $114 flat for sheds 257-400 sq ft regardless of declared value ($166.28 all-in with $50 site fee and 2% levy). Henrico County uses a value-based formula that caps at $680 building permit, so even high-value sheds plateau around $144.84-$693.60 all-in. Norfolk City uses an accessory-structure-per-square-foot formula at $0.15/sq ft with a $50 minimum, yielding $101.00 all-in for a 260-320 sq ft shed. Fairfax's structurally-different value-based approach scales without a cap, making it the most expensive verified Virginia jurisdiction for sheds at any declared value above approximately $4,000.
Yes. Fairfax classifies a "shed" as a single-use storage structure - tool shed, garden shed, workshop shed without vehicle access. A "garage" (new) is a structure designed for vehicle parking, with overhead garage doors and vehicle ramps. Garages use a different fee structure: per-sq-ft pricing by construction type ($0.143/sq ft VA/VB wood frame for the building permit), plus 50% plan review, plus 2% state levy. A 576 sq ft attached 2-car garage at VA/VB wood frame = $82.37 (576 x $0.143) + $41.18 PR + $2.47 levy = $126.02. The same 576 sq ft structure filed as a "shed" at $40,000 declared value would be 3% x $40,000 = $1,200 building permit + $600 PR + $36 levy = $1,836 all-in. The classification matters enormously; confirm with Land Development Services before filing.
Technically yes for the building permit threshold - Fairfax applies the 256 sq ft exemption per individual accessory structure. But zoning lot-coverage limits, side- and rear-yard setbacks, and total-coverage-area caps still apply across all accessory structures on the lot. Most Fairfax residential zoning districts limit total accessory structure coverage to 30% of the rear yard. Two 240 sq ft sheds may comply with the building permit exemption but trigger zoning violations if combined coverage exceeds your district limit. Always check with the Department of Planning and Zoning before splitting a project to dodge the permit threshold; the zoning review may add up to more cost than the permit you were trying to avoid.
Fairfax does not publish a guaranteed turnaround for residential shed permits. Filings go through the PLUS portal (plus.fairfaxcounty.gov); review timelines depend on submission completeness, current Land Development Services backlog, and whether the property triggers Resource Protection Area (RPA), conservation district, or HOA architectural review. The complete application package is typically a site plan showing shed location and setbacks, manufacturer specs (if pre-fab), electrical and plumbing trade permit applications (if applicable), and the contractor's invoice or value estimate. Simple permit-required sheds with no trade permits and no RPA review typically clear within 2-4 weeks; complex workshop sheds with electrical, plumbing, and HVAC trade permits may take 6-10 weeks. Call (703) 222-0801 for current submission windows.
No. The $550.80 Fairfax shed permit fee is the county building permit cost only - the cost to apply, get plan review, and have inspections performed. It does not include the shed itself or any installation labor. A 260 sq ft pre-fab storage shed kit retails for $4,000-$8,000 from major manufacturers (Tuff Shed, Costco Outdoor Living, Home Depot custom); a stick-framed shed of the same size built on-site by a contractor typically runs $8,000-$20,000 depending on siding, roofing, and electrical scope. The permit fee is the smallest line item in your project budget; the bulk is the shed and contractor scope. PermitPrice tracks only the county permit fee component.
Fairfax requires the declared construction value to be the greater of (a) the applicant's stated value, or (b) the ICC Building Valuation Data (BVD) calculation for the project's construction class and area. For sheds, the ICC BVD multiplier varies by construction type but typically falls in the $30-$50 per sq ft range for utility-only storage structures. If your contractor invoice is $12,000 for a 260 sq ft shed, that yields $46.15 per sq ft which is within typical BVD - so the applicant-stated $12,000 likely controls. If you put a suspiciously low value on the application (e.g., $2,000 for a 400 sq ft workshop), the inspector will recalculate using BVD and bill the higher rate. Honesty in declared value is the practical approach; under-declaring rarely succeeds and may trigger a Work Without Permit administrative penalty if discovered later.

Sources

Official .gov Sources - Verified March 2026
  • Appendix Q - Land Development Services Fee Schedule (FY2025) Effective July 1, 2024 - Fairfax County Land Development Services - Primary source for the shed 3% formula with $72 minimum, 50% plan review surcharge, electrical/plumbing/mechanical trade tier schedules, and the 256 sq ft permit exemption threshold for residential storage sheds with no plumbing or electrical - Verified March 15, 2026 against the PDF on fairfaxcounty.gov/landdevelopment Verified
  • Land Development Services - Fairfax County Government Accessed March 15, 2026 - Fairfax County - Index page linking the PLUS portal at plus.fairfaxcounty.gov, the residential permit application packet, the trade permit applications, and the LDS Customer Service contact
  • Code of Virginia Section 36-139 - USBC State Levy Authority Current - Virginia General Assembly - Authorizing statute for the statewide 2% building permit surcharge applied in Virginia jurisdictions, including Fairfax shed permits
Next Step

Calculate your specific Fairfax shed permit cost, see all Fairfax fee categories, or compare against Virginia neighbors.

Always verify current shed permit fees and the 256 sq ft exemption threshold directly with Fairfax County Land Development Services before budgeting or filing. The Appendix Q PDF on fairfaxcounty.gov/landdevelopment is the source of truth for Fairfax fee schedules and is currently dated FY2025 (effective July 1, 2024). Call LDS Customer Service at (703) 222-0801 to confirm the permit exemption applies to your specific shed scope and to verify trade permit requirements before submission. Permit-exemption decisions depend on accurate floor area, plumbing/electrical scope, and zoning compliance - inspectors may reclassify projects on review.
Disclaimer: All fee information on PermitPrice is for informational purposes only and is not an official permit quotation. Actual permit fees are determined by Fairfax County Land Development Services at the time of application. Trade permit subtotals in this guide use the lowest applicable tier from the Appendix Q schedule; actual electrical, plumbing, and mechanical permit costs depend on installer scope (amperage, fixture count, zone count) and may run higher than the floor estimates shown. The 256 sq ft exemption threshold applies only when the shed has no plumbing and no electrical work; verify with LDS if your scope includes either. Zoning compliance (setbacks, lot coverage, RPA review) is separate from building permit requirements - exemption from one does not exempt you from the other.

Written by: Munib Ur Rehman

Data verified against official fee schedule documents.