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Codes, exemptions & field inspections

Build to the adopted code. Verify every exception.

This guide translates the available agency record into a preconstruction checklist for structural scope, minor work, and inspection release. The adopted code and the issuing official control when a field condition is disputed.

Regulatory framework

The code baseline for Baltimore County.

Current county code materials for 2026 identify the 2021 International Building Code, 2021 International Residential Code, 2021 International Mechanical Code, 2021 International Energy Conservation Code, and 2021 International Plumbing Code, with Baltimore County amendments under Bill 49-24 (building, residential, mechanical, and energy effective September 3, 2024; plumbing under Bill 94-23 effective July 1, 2024). The county also applies the 2023 National Electrical Code, State Fire Prevention Code provisions based on 2018 NFPA 1 and 2018 NFPA 101, floodplain regulations under Bill 6-24, and applicable local fire amendments.

Inspection lane

The permittee must notify the responsible inspection division when work is completed and tested and coordinate access and required inspections with the county. Contact Building Inspections at 410-887-3953, Electrical Inspections at 410-887-3960, Plumbing Inspections at 410-887-3620, or Fire Inspections at 410-887-4880. Permit and enforcement records and online submissions are handled through Citizen Access.

Minor-work playbook

Understand what may be exempt—and what is not.

For work outside the 100-year floodplain, Baltimore County code exemptions include certain one-story R-3 accessory tool/storage sheds, playhouses, and similar structures, including decks not more than 16 inches above the lowest grade, when the floor area does not exceed 120 square feet and the site is not in the Chesapeake Bay Critical Area, a proposed or designated historic district, or on the County landmarks list. Fences no more than 42 inches high may also be exempt under the same location restrictions. Agricultural buildings are generally outside the building-code scope, but electrical and plumbing permits are still required; other work such as roof repairs may have separate permit rules.

Field rule

A permit exemption generally addresses one narrow construction trigger. It does not automatically waive zoning, land-use, floodplain, shoreline, fire, energy, electrical, utility, septic, or right-of-way requirements. Obtain written confirmation when the project involves a new structure, structural alteration, change in occupancy, or concealed work.

Inspection pipeline

Keep the work visible at every release point.

  1. 1

    Request with lead time

    The permittee must notify the responsible inspection division when work is completed and tested and coordinate access and required inspections with the county. Contact Building Inspections at 410-887-3953, Electrical Inspections at 410-887-3960, Plumbing Inspections at 410-887-3620, or Fire Inspections at 410-887-4880. Permit and enforcement records and online submissions are handled through Citizen Access.

  2. 2

    Preserve access

    Do not cover framing, reinforcement, wiring, piping, damp-proofing, or life-safety work until the required inspection has been completed and documented.

  3. 3

    Close the record

    Retain the approved plans, inspection approvals, correction responses, and final certificate or occupancy release with the property file.

Contractor verification

Verify the builder before the contract is signed.

Use the state licensing system to verify active registration, trade credentials, bond status, and liability coverage where available. Match the legal business name to the proposal and permit application.

Verify contractor ↗

Planning reference

Keep the parcel rules beside the building plans.

A building permit is only one part of statutory compliance. Check the local zoning, ordinance, map, or land-use reference before finalizing setbacks, height, lot coverage, access, drainage, or accessory structure placement.

Open planning reference ↗

Source trail

Official sources for this profile

Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.

Agency websiteOpen official source ↗Permit portalOpen official source ↗Fee scheduleOpen official source ↗Planning or zoning referenceOpen official source ↗Contractor license lookupOpen official source ↗

Project questions

Frequently asked questions for Baltimore County

Who handles permitting for this jurisdiction?

Baltimore County Department of Permits, Approvals and Inspections is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.

How should I begin an application?

Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact 410-887-3900 (building permit processing); 410-887-3953 (building inspections); 410-887-3987 (plans review); 410-887-3391 (zoning).

How long might review take?

N/A - no standard general building-permit review timeline was published in the reviewed current materials; plan-review time varies by project and required agency approvals.

How are inspections scheduled?

The permittee must notify the responsible inspection division when work is completed and tested and coordinate access and required inspections with the county. Contact Building Inspections at 410-887-3953, Electrical Inspections at 410-887-3960, Plumbing Inspections at 410-887-3620, or Fire Inspections at 410-887-4880. Permit and enforcement records and online submissions are handled through Citizen Access.

Which codes and exemptions should I review?

Current county code materials for 2026 identify the 2021 International Building Code, 2021 International Residential Code, 2021 International Mechanical Code, 2021 International Energy Conservation Code, and 2021 International Plumbing Code, with Baltimore County amendments under Bill 49-24 (building, residential, mechanical, and energy effective September 3, 2024; plumbing under Bill 94-23 effective July 1, 2024). The county also applies the 2023 National Electrical Code, State Fire Prevention Code provisions based on 2018 NFPA 1 and 2018 NFPA 101, floodplain regulations under Bill 6-24, and applicable local fire amendments. For work outside the 100-year floodplain, Baltimore County code exemptions include certain one-story R-3 accessory tool/storage sheds, playhouses, and similar structures, including decks not more than 16 inches above the lowest grade, when the floor area does not exceed 120 square feet and the site is not in the Chesapeake Bay Critical Area, a proposed or designated historic district, or on the County landmarks list. Fences no more than 42 inches high may also be exempt under the same location restrictions. Agricultural buildings are generally outside the building-code scope, but electrical and plumbing permits are still required; other work such as roof repairs may have separate permit rules.

Field sequencing matters

The inspector needs to see the work at the right moment.

Code compliance is not only a plan-review exercise. Footings, reinforcement, framing, fireblocking, wiring, piping, insulation, weather protection, and life-safety systems each have points where the work must remain accessible. Build the inspection calendar into the trade schedule instead of treating it as a final administrative step.

When a project qualifies for a narrow minor-work exemption, keep a written explanation of why it qualifies and confirm that related zoning, utility, fire, energy, or environmental rules do not create a separate approval requirement.

Closeout file

Keep the approved plan set, inspection approvals, correction responses, contractor license verification, final certificate, and any occupancy release together. A clean record protects the owner, builder, lender, insurer, and future buyer.