Harford vs Baltimore County, MD Building Permit Fees (2026)
Side-by-side comparison of two neighboring Maryland counties, using official fee schedule data verified from both harfordcountymd.gov and baltimorecountymd.gov. The two counties use opposite pricing models. Harford charges $0.15 per square foot plus a flat $100 application fee on most residential work, so the fee scales with project size. Baltimore County charges flat fees by structure type - $85 for an addition up to 600 sq ft, $25 for a residential fence, $21 for a wood stove - but its published schedule is dated November 26, 2018, more than 7 years old, so current rates must be confirmed with PAI. Maryland adds no statewide levy for either county.
For a 400 sq ft addition, Baltimore County's flat $85.00 beats Harford's $160.00 (400 × $0.15 + $100 application fee) by $75. For a 12x16 ft (192 sq ft) shed, the result flips: Harford bills a flat $20.00 against Baltimore County's $85.00 - Harford cheaper by $65. For a new 2,400 sq ft home, Harford's building-permit side is $510.00 including the $50 MHIC fee, versus Baltimore County's $231.00 stated category minimum - but Harford also charges a separate $10,000 impact fee on every new single-family home, and Baltimore County's published schedule dates from 2018, so confirm current rates before budgeting.
Evidence and Source Confidence
Both jurisdictions have official PermitPrice fee verifications, but they are not on equal footing. Harford's schedule is current (effective January 1, 2025, PDF revised 01/01/2026). Baltimore County's published schedule is dated effective November 26, 2018 - more than 7 years old - and carries a source-age warning throughout this page. The math below uses verified inputs from each county's published fee schedule.
Harford County
VerifiedSource: Harford County DILP Fee Schedule (Bill 24-013). Extracted via pdfplumber from harfordcountymd.gov and verified June 8, 2026.
Current schedule: Effective January 1, 2025, with PDF footers reading "Revised 01/01/2026." The $0.15/sq ft rate, $100 application fee, $20 small-shed fee, $50 MHIC fee, and the separate $10,000 impact fee (Bill 24-033) are itemized on the official schedule. High confidence. Verify with DILP at 410-638-3122 before filing.
Baltimore County
2018 scheduleSource: Baltimore County PAI Building Permit Fee Schedule (BPP 15 Attachment A). Extracted via pdfplumber from baltimorecountymd.gov and verified June 1, 2026.
Source-age warning: The PDF is dated "Effective 11/26/18" on every page - over 7 years old at verification. It is the version currently served on the county PAI site, but rates this old should be confirmed before relying on them. Every Baltimore County figure on this page carries this caveat. Verify with PAI at 410-887-3900 before filing.
Fee Structure Side-by-Side
These two counties sit at opposite ends of the fee-design spectrum. Harford is formula-driven: $0.15 per square foot plus a $100 non-refundable application fee on most residential permits, so the fee tracks project size. Baltimore County is flat-fee-driven: a fixed price per structure type regardless of exact size within each tier. Neither county adds a technology fee or a Maryland state levy.
| Project Type | Harford County | Baltimore County |
|---|---|---|
| New residential 1-2 family | $0.15 per sq ft + $100 application fee + $50 MHIC |
$231 category minimum (area-based Fee Category D; actual can exceed the minimum) |
| Addition / alteration | $0.15/sq ft + $100 | $85 (≤600 sq ft) $130 (over 600 sq ft or second floor) |
| Deck | Not separately itemized (likely the per-sq-ft / accessory path - confirm with DILP) |
$85 (≤600 sq ft) $119 (over 600 sq ft) |
| Shed / accessory structure | $20 flat (≤200 sq ft, no inspection) $0.15/sq ft + $100 (over 200 sq ft) |
$85 (≤1,000 sq ft) $130 (over 1,000 sq ft) |
| Fence (residential) | $20 + $0.10/ft over 250 ft | $25 flat |
| Wood stove / fireplace | $160 flat | $21 flat |
| Residential solar | Per DILP schedule (not modeled) | $79 flat |
| In-ground pool | $200 + $0.10/ft fence | Per PAI schedule (not modeled) |
| Application fee | $100 (all residential per-sq-ft permits) | None stated on schedule |
| Technology fee / state levy | None / None (Maryland) | None / None (Maryland) |
| MHIC guaranty fund fee (new home) | $50 (itemized on schedule) | Not itemized on the 2018 schedule |
| Separate new-construction charges | $10,000 impact fee (Bill 24-033) | Impact/development fees excluded from schedule |
| Schedule effective date | Jan 1, 2025 (revised 01/01/2026) | Nov 26, 2018 (verify current) |
Sources: Harford County DILP Fee Schedule (Bill 24-013, eff. Jan 1, 2025, PDF revised 01/01/2026) and Baltimore County PAI Building Permit Fee Schedule (eff. Nov 26, 2018). Three scope warnings apply to every row: (1) Baltimore County's schedule is more than 7 years old - confirm current rates with PAI at 410-887-3900 before relying on any figure; (2) Harford's $10,000 impact fee on new single-family homes and townhouses is a separate charge under Bill 24-033 and is never added into any permit total on this page; (3) decks are not directly comparable because Harford does not itemize a deck fee. Trade permits (electrical, plumbing, mechanical) are separate in both counties and not modeled.
Worked Examples - Same Project, Both Counties
Each example uses identical project assumptions and applies each county's official schedule. All arithmetic is reproducible from the verified inputs. Baltimore County figures come from its 2018-dated schedule (verify current); Harford's separate $10,000 impact fee is disclosed but never added to any total.
| Shared Project | Harford County | Baltimore County | Cheaper |
|---|---|---|---|
| 400 sq ft addition | $160 ($60 + $100) | $85 | Baltimore Co. by $75 |
| 700 sq ft addition | $205 ($105 + $100) | $130 | Baltimore Co. by $75 |
| 192 sq ft shed (12x16) | $20 flat | $85 | Harford by $65 |
| 400 sq ft shed / garage | $160 ($60 + $100) | $85 | Baltimore Co. by $75 |
| 150 ft fence | $20 | $25 | Harford by $5 |
| 400 ft fence | $35 ($20 + 150 × $0.10) | $25 | Baltimore Co. by $10 |
| New 2,400 sq ft home | $510 (incl. $50 MHIC)* | $231 stated minimum** | Not directly comparable |
| Wood stove | $160 flat | $21 | Baltimore Co. by $139 |
* Excludes Harford's separate $10,000 impact fee (Bill 24-033) - always a separate charge, never added to the permit total. ** Baltimore County's $231 is the stated minimum for Fee Category D on its area-based 2018 schedule; the actual computed fee for a 2,400 sq ft home could be higher. All Baltimore County figures are from the 2018-dated schedule - verify current.
A homeowner builds a 400 sq ft single-story addition.
- Building permit (400 × $0.15): $60.00
- Application fee: $100.00
- Technology fee / state levy: none
Total: $160.00
- Addition flat fee (≤600 sq ft): $85.00
- Application fee: none stated
- Technology fee / state levy: none
Total: $85.00 (2018 schedule - verify current)
Baltimore County wins by $75.00. Harford's $100 application fee alone exceeds Baltimore County's entire $85 flat fee, before the per-square-foot charge is even counted. The same $75 gap holds at 700 sq ft ($205 vs $130), because Baltimore County's tier steps up by $45 while Harford's formula adds $45 of square footage - the structures move in parallel. The caveat cuts the other way: Baltimore County's $85 is a 2018-era rate, while Harford's formula is current to January 1, 2025.
A homeowner places a 12x16 ft (192 sq ft) shed behind a single-family house. See the Harford County shed permit guide for the full breakdown on the Harford side.
- Accessory structure ≤200 sq ft: $20.00 flat
- No certificate of occupancy or inspection required
- No application fee at this size
Total: $20.00
- Accessory structure ≤1,000 sq ft: $85.00 flat
Total: $85.00 (2018 schedule - verify current)
Harford wins by $65.00. Harford's $20 flat fee for a 1-2 family accessory structure of 200 sq ft or under - with no certificate of occupancy or inspection required - is one of the cheapest shed permits in Maryland. But the advantage vanishes the moment the structure crosses 200 sq ft: a 400 sq ft garage is $160 in Harford (400 × $0.15 + $100) versus a flat $85 in Baltimore County, flipping the winner.
A builder pulls a permit for a new 2,400 sq ft single-family home (building-permit side only). This example is labeled "not directly comparable" because the two sides are measured differently: Harford's total is exact arithmetic from its formula, while Baltimore County's is only the stated minimum of its area-based category.
Harford County (exact)
- Building permit (2,400 × $0.15): $360.00
- Application fee: $100.00
- MHIC fee: $50.00
Total: $510.00
Separate charge, not included above: $10,000 impact fee per new single-family home or townhouse (Bill 24-033, eff. March 1, 2025).
Baltimore County (stated minimum)
- Fee Category D minimum (residential 1-2 family): $231.00
- Area-based schedule - the actual computed fee for 2,400 sq ft could be higher
Stated minimum: $231.00 (2018 schedule - verify current)
Impact/development fees are excluded from Baltimore County's permit fee schedule - check separately with PAI.
Not a like-for-like total. Harford's $510.00 is exact: $360 permit + $100 application fee + $50 MHIC. Baltimore County's $231.00 is only the stated category minimum from a 2018-dated, area-based schedule - the computed fee for a real 2,400 sq ft home could be higher, so do not read the $279 gap as a verified saving. The dominant number on the Harford side is not on the permit at all: the separate $10,000 impact fee per new single-family home dwarfs every permit figure in this comparison and applies in Harford only.
When Each County Is Cheaper
The pattern is consistent: Harford's per-square-foot formula with its $100 application-fee floor loses to Baltimore County's flat fees on mid-size and large projects, but Harford's $20 small-shed fee and $20 fence base are hard to beat on tiny jobs. This table summarizes which county wins each category - with Baltimore County's 2018 schedule age as the standing caveat on every row.
| Project Type | Cheaper County | Why |
|---|---|---|
| Addition (any size) | Baltimore County | Harford's $100 application fee alone exceeds the $85 flat tier; even over 600 sq ft, $130 beats $0.15/sq ft + $100 at every qualifying size. |
| Shed 200 sq ft or under | Harford | Flat $20 with no inspection or certificate of occupancy, versus an $85 flat fee in Baltimore County. |
| Shed / garage over 200 sq ft | Baltimore County | Once Harford's per-sq-ft path triggers, the $100 application fee pushes the minimum past Baltimore County's $85 flat fee (up to 1,000 sq ft). |
| Fence up to 300 ft | Harford | $20 base beats $25 flat; Harford only adds $0.10/ft beyond 250 ft, so the lines cross at 300 ft ($20 + 50 × $0.10 = $25). |
| Fence over 300 ft | Baltimore County | $25 flat at any length; Harford's footage charge keeps climbing (a 400 ft fence is $35). |
| Wood stove | Baltimore County | $21 flat versus Harford's $160 flat square-footless permit - a $139 difference. |
| New single-family home | Not directly comparable | Harford $510 is exact (incl. $50 MHIC) but adds a separate $10,000 impact fee; Baltimore County's $231 is only a stated category minimum on a 2018 schedule. |
| Deck | Not comparable | Baltimore County is $85/$119 by size; Harford does not itemize a deck fee - likely the per-sq-ft/accessory path, confirm with DILP. |
Caveat: this comparison covers building permit fees only, and every Baltimore County figure comes from a schedule dated November 26, 2018 - more than 7 years old - so confirm current rates with PAI (410-887-3900) before treating any row as decision-grade. The biggest dollar item on new construction is Harford's separate $10,000 impact fee (Bill 24-033), which is set under its own ordinance and never added into any permit total here. Trade permits (electrical, plumbing, mechanical), zoning, and Health Department fees are separate in both counties.
Frequently Asked Questions
Calculate Your Specific Project
Get the full fee schedule for either county, or dive into a specific project type with a dedicated guide.
Sources
-
Harford County DILP Fee Schedule (Bill 24-013) Effective January 1, 2025 (PDF revised 01/01/2026) - Harford County, MD - Source for the Harford side of every comparison: $0.15/sq ft, $100 application fee, $20 small-shed fee, $160 wood stove, fence formula, $50 MHIC, $10,000 impact fee - Verified June 8, 2026 Verified
-
Baltimore County PAI Building Permit Fee Schedule (BPP 15 Attachment A) Dated effective November 26, 2018 - Baltimore County, MD - Source for the Baltimore County side: $85/$130 additions, $85/$119 decks, $85 accessory, $25 fence, $21 wood stove, $79 solar, $231 Category D minimum - Extraction verified June 1, 2026; schedule over 7 years old, verify current with PAI
Get the full fee schedule for either county, or check more Maryland comparisons.