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§ 02
When a permit is required
Permit triggers and exempt work for Harford County
Generally required to construct or alter a structure, demolish or move a structure, install or alter regulated equipment, change use, or place a structure.
One-story residential accessory structures 200 square feet or less and not high hazard
Ordinary repairs that do not remove structural members, alter egress, or affect public health or safety
Replastering or resurfacing of an existing pool or spa
Certain public service agency generation, transmission, distribution, metering, or related equipment work
- Exempt One-story residential accessory structures 200 square feet or less and not high hazard
- Exempt Ordinary repairs that do not remove structural members, alter egress, or affect public health or safety
- Exempt Replastering or resurfacing of an existing pool or spa
- Exempt Certain public service agency generation, transmission, distribution, metering, or related equipment work
Note: The County publishes a specific list of exempt work items. Verify your project with the Permit Center if uncertain.
Required documents
- Permit application
- Site plan or survey
- Construction drawings
- Contractor contract for residential work if applicable
- Recent deed if ownership changed
- IECC form for new dwellings or additions
- Fire sprinkler plans where applicable
- Outside-agency documents required by site conditions
- Building code
- Harford County adopted the 2021 International Building Code, 2021 International Residential Code, 2021 International Mechanical Code, 2021 International Plumbing Code, and 2023 National Electrical Code, with local amendments.
- Permit validity
- Application expires after 180 days unless issued or diligently pursued. Issued building permit expires if work is not commenced and diligently pursued within 12 months, or if suspended or abandoned for 6 months. Diligently pursued means an inspection occurs within 6 months from the previous inspection.
- Owner-builder
- Owner or authorized agent may apply. Trade permits for owner-occupied homes may require one-time homeowner permits and testing. Residential contractors listed on the application must carry MHIC, or MHBR for new dwellings.
- Contractor requirements
- Building contractors must meet MHIC or MHBR rules as applicable. Electrical permits must be obtained by a county-licensed master electrician unless homeowner exception applies. Mechanical permits require a registered master HVACR contractor. Plumbing permits require a registered master plumber.
§ 03
Application process
Typical processing: Agency goal is comment or approval within 10 business days after initial processing; no fixed countywide issuance guarantee is posted.
- 01 Determine whether the work requires a permit under the County permit and building services guidance.
- 02 Apply online through the ePermit Center, by email to building@harfordcountymd.gov, or by in-person or mailed submission to the Permit Center.
- 03 Submit the required site plan, construction plans, and supporting PDFs.
- 04 The County routes the application to applicable reviewers, which may include Planning and Zoning, Building Services, Health Department, DPW water and sewer, driveway access, stormwater, State Fire Marshal, and others.
- 05 After initial processing, the County states each reviewing agency aims to comment or approve within 10 business days.
- 06 Pay permit fees, including the non-refundable application fee.
- 07 Receive the issued permit and keep the approved plans and permit on site.
- 08 Schedule inspections, complete all required finals, and obtain certificate of occupancy where required.
Typical processing time: Agency goal is comment or approval within 10 business days after initial processing; no fixed countywide issuance guarantee is posted.
§ 04
Fee schedule
Effective 2026-03
Fee type
Amount
01
Minimum permit fee
$20 for accessory structures 200 square feet and under; many other permit categories carry non-refundable application fees
02
Plan check fee
Preliminary plan review $60 per half hour; building permit schedules also include non-refundable application fees
03
Permit fee formula
Primarily square-foot based for building permits, with flat fees for many miscellaneous permits and separate plumbing, mechanical, and electrical schedules
04
Reinspection fee
$50 for reinspection or unnecessary trip; $100 investigation fee; violation fees from $500 upward; $50 penalty for proceeding without prior inspection
05
Penalty (no permit)
Permit extension $50; expired permit reissuance $100 residential and $200 commercial
Building permit fees are paid at application. County allows a 50% refund on canceled building permits where no work has been done and refund is requested within 6 months. No refunds are issued for electrical, mechanical, or plumbing permits.
Fees change periodically. Confirm at the official fee schedule ↗ (effective 2026-03) before budgeting.
§ 05
Required inspections
Scheduling and sequence
How to schedule
- ePermit Center (online)
- 410-638-3366 (phone)
- Scheduling deadline
- Requests before 3 p.m. are scheduled for the next business day pending availability; later requests go to the second business work day. Approximate time requests may be made between 7:00 and 7:30 a.m. on inspection day.
Typical sequence: Footing, foundation, slab or drain tile, framing after rough-ins, insulation, ceiling where applicable, and final before certificate of occupancy.
§ 06
Frequently asked
Common questions about unincorporated Harford County permits
01 Do I need a building permit in unincorporated Harford County, MD? ▸
Generally required to construct or alter a structure, demolish or move a structure, install or alter regulated equipment, change use, or place a structure.
02 How much does a building permit cost in unincorporated Harford County, MD? ▸
Building permit fees in unincorporated Harford County, MD are set by the local building department and vary by project type and valuation. The minimum permit fee is $20 for accessory structures 200 square feet and under; many other permit categories carry non-refundable application fees. Fees are calculated as: Primarily square-foot based for building permits, with flat fees for many miscellaneous permits and separate plumbing, mechanical, and electrical schedules. Plan check fee: Preliminary plan review $60 per half hour; building permit schedules also include non-refundable application fees.
03 How do I apply for a building permit in unincorporated Harford County, MD? ▸
To apply for a building permit in unincorporated Harford County, MD, follow these steps: 1. Determine whether the work requires a permit under the County permit and building services guidance. 2. Apply online through the ePermit Center, by email to building@harfordcountymd.gov, or by in-person or mailed submission to the Permit Center. 3. Submit the required site plan, construction plans, and supporting PDFs. 4. The County routes the application to applicable reviewers, which may include Planning and Zoning, Building Services, Health Department, DPW water and sewer, driveway access, stormwater, State Fire Marshal, and others. 5. After initial processing, the County states each reviewing agency aims to comment or approve within 10 business days. 6. Pay permit fees, including the non-refundable application fee. 7. Receive the issued permit and keep the approved plans and permit on site. 8. Schedule inspections, complete all required finals, and obtain certificate of occupancy where required.
04 How long does it take to get a building permit in unincorporated Harford County, MD? ▸
Building permit processing times in unincorporated Harford County, MD typically run Agency goal is comment or approval within 10 business days after initial processing; no fixed countywide issuance guarantee is posted.. Timelines can vary based on project complexity and current department workload.
05 What work is exempt from building permits in unincorporated Harford County, MD? ▸
Not all construction work requires a permit in unincorporated Harford County, MD. The following work is generally exempt: One-story residential accessory structures 200 square feet or less and not high hazard; Ordinary repairs that do not remove structural members, alter egress, or affect public health or safety; Replastering or resurfacing of an existing pool or spa; Certain public service agency generation, transmission, distribution, metering, or related equipment work. Note: The County publishes a specific list of exempt work items. Verify your project with the Permit Center if uncertain. When in doubt, confirm with the local building department before starting work.
06 How do I schedule a building inspection in unincorporated Harford County, MD? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Harford County, MD via: ePermit Center, 410-638-3366. Requests before 3 p.m. are scheduled for the next business day pending availability; later requests go to the second business work day. Approximate time requests may be made between 7:00 and 7:30 a.m. on inspection day..
last verified April 2026
source Harford County Department of Inspections, Licenses and Permits, Permit Center, with Building Services Division and Planning and Zoning support ↗
entry id permits/maryland/harford/unincorporated
Educational reference. Permit rules and fees change — confirm current requirements directly with Harford County Department of Inspections, Licenses and Permits, Permit Center, with Building Services Division and Planning and Zoning support before applying. Jaspector is not legal advice.