Fairfax vs Chesterfield Garage Permit Fees (2026)
Project-type-specific comparison of detached garage permit fees using official fee data from both Virginia counties. For a new detached garage, Fairfax County prices the building permit per square foot (verified Appendix Q FY2027), so any wood-frame garage up to 945 sq ft lands at the $158.77 all-in floor. Chesterfield County charges a single flat $340.70 (verified FY2026-2027) regardless of size. Fairfax is cheaper for any normal-size garage - the reverse of how the two counties compare on value-based work like decks and additions. This page covers detached garages only; for all project types see the general Fairfax vs Chesterfield permit fee comparison.
For a new detached garage, Fairfax County charges $158.77 all-in for any wood-frame garage up to 945 sq ft (the $141.75 minimum building permit covers a 1-, 2- or 3-car garage alike), and about $201.60 for a 1,200 sq ft garage. Chesterfield County charges a flat $340.70 regardless of size. Fairfax is cheaper for any normal-size garage - on a typical 2-car garage Fairfax saves $181.93. This is the reverse of the value-based picture, where Chesterfield is the cheaper county. The winner only flips above roughly 2,028 sq ft of wood-frame garage, where Fairfax's per-square-foot fee finally exceeds Chesterfield's flat rate. Half of the Fairfax permit fee is due at application as a filing-fee deposit and is credited at issuance (County Code 61-1-3(d)11); it is not an extra charge. Both figures are county permit costs only - not the slab, the structure, or the separate electrical sub-permit for garage lighting and outlets.
- The headline number: a small-to-mid detached garage runs $158.77 all-in in Fairfax County (Appendix Q FY2027, effective July 1, 2026) versus a flat $340.70 in Chesterfield County - Fairfax saves $181.93 on any garage up to 945 sq ft.
- Fairfax prices a new garage as new construction per square foot ($0.15 per sq ft for wood-frame VA/VB), with a $141.75 minimum building permit, so any garage up to 945 sq ft hits the $158.77 all-in floor (permit + 2% state levy + 10% county technology surcharge).
- Chesterfield charges one flat $285 building permit plus a $50 Environmental Engineering site inspection fee plus the 2% state levy on the building permit = $340.70, the same whether the garage is 240 or 1,200 sq ft.
- The winner flips versus the general comparison: Chesterfield is the cheaper county for value-based projects like decks and additions, but Fairfax's per-square-foot garage pricing makes Fairfax cheaper for any normal garage.
- The crossover is around 2,028 sq ft of wood-frame garage. Above that, Chesterfield's flat fee wins; below it - every common garage size - Fairfax wins.
- Both totals are permit costs only. They exclude the concrete slab, the structure itself, and the separate electrical sub-permit Fairfax requires for garage lighting and outlets.
What Is Verified in This Comparison
Both jurisdictions' garage data on this page are verified from official sources. No fee amounts are estimated. The Fairfax schedule reflects FY2027 Appendix Q (effective July 1, 2026). The Chesterfield schedule reflects the FY2026-2027 Residential Building Inspection fee schedule (effective July 1, 2026).
| Data Point | Fairfax County | Chesterfield County |
|---|---|---|
| Fee schedule source |
Verified Appendix Q, LDS Fee Schedule, FY2027 (effective July 1, 2026) |
Verified Residential Building Inspection Fee Schedule, FY2026-2027 (effective July 1, 2026) |
| Garage fee method |
Verified New construction per square foot: $0.15/sq ft wood-frame, $141.75 minimum |
Verified Flat $285 building permit (detached garage line item) |
| Site inspection fee |
N/A No separate site inspection fee |
Verified: $50 Environmental Engineering site fee (mandatory for garages) |
| Add-on fee |
Verified: 2% levy Virginia USBC state levy on the permit (Code of Virginia 36-139) |
Verified: 2% levy Virginia state levy on the building permit only (not the $50 site fee) |
| Typical garage all-in | Verified: $158.77 (floor to 945 sq ft) | Verified: $340.70 flat |
Note on schedule currency: The Fairfax Appendix Q data is FY2027 (effective July 1, 2026); an FY2026 schedule may follow around July 2026 - verify with LDS at (703) 222-0801. The Chesterfield schedule is FY2026-2027 (effective July 1, 2026) - confirm with Chesterfield Building Inspection at (804) 751-4990. Fairfax garage figures use the VA/VB wood-frame rate; heavier construction types cost more per square foot.
Garage Fee Structure Comparison
Head-to-head comparison of how each county prices a new detached garage permit. Fairfax scales with floor area; Chesterfield charges one flat fee no matter the size.
| Fee Component | Fairfax County | Chesterfield County |
|---|---|---|
| Fee calculation method | Per sq ft ($0.15 wood-frame), $141.75 min | Flat $285 building permit |
| Site inspection fee | None | $50 Environmental Engineering (mandatory) |
| Add-on fee | 2% Virginia state levy + 10% county technology surcharge on the building permit | 2% Virginia state levy on the $285 only |
| Scales with garage size? | Yes - building permit rises with floor area above 945 sq ft | No - same fee at any size |
| Electrical sub-permit | Separate (lighting/outlets) | Separate (lighting/outlets) |
| 720 sq ft 3-car garage - all-in total | $158.77 Verified | $340.70 Verified |
Scope note: Both totals are permit costs only. Fairfax's building permit is $0.15 per square foot for standard wood-frame (VA/VB) construction with a $141.75 minimum (Appendix Q FY2027, effective July 1, 2026), plus the 2% state levy and the county's 10% technology surcharge. Half of the Fairfax permit fee is due at application as a filing-fee deposit and is credited at issuance (County Code 61-1-3(d)11); it is not an extra charge. Chesterfield's $340.70 is a flat $285 building permit plus a mandatory $50 Environmental Engineering site fee plus the 2% levy on the $285. Neither figure includes the slab, the structure, or the separate electrical sub-permit for garage lighting and outlets.
Three Garages, Two Counties: Line-by-Line
Each example uses the same garage on both sides, with Fairfax priced at the standard wood-frame (VA/VB) rate. Chesterfield's $340.70 never changes with size, and all three garages sit under Fairfax's 945 sq ft minimum-fee threshold, so Fairfax wins in all three at the same $158.77.
Example 1: Small detached garage (240 sq ft, 1-car)
240 × $0.15 = $36.00, below minimum =
$141.75$141.75 × 2% =
$2.84$141.75 × 10% =
$14.18$141.75 + $2.84 + $14.18 =
$158.77$285.00$50.00$285 × 2% =
$5.70$285 + $50 + $5.70 =
$340.70Result: Fairfax is cheaper by $181.93 on a small garage. Any Fairfax wood-frame garage up to 945 sq ft stays at the $158.77 floor.
Example 2: Two-car detached garage (576 sq ft)
576 × $0.15 = $86.40, below minimum =
$141.75$141.75 × 2% =
$2.84$141.75 × 10% =
$14.18$141.75 + $2.84 + $14.18 =
$158.77$285.00$50.00$5.70$340.70Result: Fairfax is cheaper by $181.93. A 576 sq ft garage (576 x $0.15 = $86.40) is still under the $141.75 minimum, so it pays the same $158.77 floor as the 1-car garage.
Example 3: Three-car detached garage (720 sq ft)
720 × $0.15 = $108.00, below minimum =
$141.75$141.75 × 2% =
$2.84$141.75 × 10% =
$14.18$141.75 + $2.84 + $14.18 =
$158.77$285.00$50.00$5.70$340.70Result: Fairfax is cheaper by $181.93 even on a large three-car garage (720 x $0.15 = $108.00, still under the minimum). The per-square-foot figures are arithmetic from Fairfax's verified $0.15 wood-frame rate; Chesterfield is its verified flat line item.
Where Does the Winner Flip? Size Scaling
Because Fairfax scales with floor area and Chesterfield is flat, there is a real crossover. Fairfax is cheaper at every common garage size and only loses once the garage gets very large. The table below tracks both as the garage grows (Fairfax rows are arithmetic from the verified $0.15 wood-frame rate).
| Garage Floor Area (wood-frame) | Fairfax All-In | Chesterfield All-In | Cheaper County |
|---|---|---|---|
| 240 sq ft (1-car) | $158.77 | $340.70 | Fairfax (-$181.93) |
| 400 sq ft | $158.77 | $340.70 | Fairfax (-$181.93) |
| 576 sq ft (2-car) | $158.77 | $340.70 | Fairfax (-$181.93) |
| 720 sq ft (3-car) | $158.77 | $340.70 | Fairfax (-$181.93) |
| 900 sq ft | $158.77 | $340.70 | Fairfax (-$181.93) |
| 1,200 sq ft | $201.60 | $340.70 | Fairfax (-$139.10) |
| 1,800 sq ft | $302.40 | $340.70 | Fairfax (-$38.30) |
| ~2,028 sq ft (crossover) | ~$340.70 | $340.70 | About even |
| 2,400 sq ft | $403.20 | $340.70 | Chesterfield (-$62.50) |
The crossover sits around 2,028 sq ft of wood-frame garage (2,028 x $0.15 = $304.20 permit, x 1.12 = $340.70 all-in) - larger than almost any residential detached garage. For a 1-, 2-, or 3-car garage, Fairfax is reliably cheaper. Heavier construction types (steel or masonry) raise Fairfax's per-square-foot rate and would shift the crossover lower, so check your construction type against Appendix Q.
Why Fairfax and Chesterfield Price Garages Differently
The flip comes from two different ways of pricing a garage, not from one county being cheap or expensive across the board.
Fairfax prices a garage as new construction, per square foot. Appendix Q charges $0.15 per square foot for standard wood-frame (VA/VB) construction, with a $141.75 minimum building permit, the 2% state levy and a 10% county technology surcharge. Because a garage is mostly unconditioned floor area with no high-value finishes, the per-square-foot figure stays low - a 2- or even 3-car garage never reaches the $141.75 minimum, so it pays the $158.77 floor. That makes Fairfax unusually cheap for garages, even though its 3%-of-value formula makes it the priciest county for decks, additions, and other value-based work.
Chesterfield charges one flat fee. The county sets a flat $285 building permit for a detached garage and adds a mandatory $50 Environmental Engineering site inspection fee because a garage changes the building footprint. With the 2% state levy on the $285, the all-in is $340.70 at any size. Chesterfield's flat model is cheap for value-based work (a deck is just $116.28) but comparatively high for a small garage, because the fixed fee does not shrink for a small structure.
The practical takeaway: for a normal detached garage, Fairfax's square-foot pricing beats Chesterfield's flat fee, and the gap is largest for small garages. The winner flips only above roughly 2,028 sq ft. For the full single-jurisdiction detail, see the Fairfax garage guide and the Chesterfield garage guide.
Frequently Asked Questions
Garage Guides and Tools
Go deeper on either county, run your own numbers, or compare across all Virginia jurisdictions.
Official Sources
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Appendix Q - LDS Fee Schedule (FY2027) - Fairfax County Appendix Q FY2027, effective July 1, 2026 - source for the per-square-foot new-construction garage rate ($0.15/sq ft wood-frame, Table 1), $141.75 minimum, 10% technology surcharge (Part III) and the filing-fee deposit credited at issuance (County Code 61-1-3(d)11). Verified September 18, 2026 Verified
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Residential Permits and Inspections - Chesterfield County FY2026-2027 schedule (effective July 1, 2026) - source for the flat $285 detached-garage building permit and the $50 Environmental Engineering site fee. Verified May 2026 Verified
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Code of Virginia Section 36-139 - USBC State Levy Authority Current - authorizing statute for the 2% state levy applied to the building permit in both counties