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Carroll County, MD Building Safety: Building Permits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Issuing office
Supervisor of Assessments
Minor-work exemption threshold
$500 or less value
Permit validity
1 year from issuance
Maximum fine for no permit
$100 plus costs (misdemeanor)
Application must state
Location, size, approximate value

Summary

Carroll County Code § 3-107 requires a building permit from the Supervisor of Assessments before any erection, construction, repair, alteration, or remodeling of a building or structure, unless the County Commissioners have exempted work valued at $500 or less.

These county ordinances apply to unincorporated areas of Carroll County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Before commencing the erection, construction, repair, alteration, or remodeling of any building or structure, a person, firm, or corporation shall make application to the Supervisor of Assessments for Carroll County for a building permit. No erection, construction, repair, alteration, or remodeling shall be undertaken until a building permit has been obtained. However, the County Commissioners of Carroll County may adopt regulation exempting from the provisions of this section any erection, construction, repair, alteration, or remodeling that they shall designate where the value does not exceed $500.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-15: Supplement contains: Local legislation current through July 30, 2026).

Full Breakdown

Section 3-107(a) bars starting the erection, construction, repair, alteration, or remodeling of any building or structure until a person, firm, or corporation has applied to and received a permit from the Supervisor of Assessments for Carroll County. The County Commissioners may adopt a regulation exempting from the permit requirement any such work they designate where the value does not exceed $500. Under subsection (b), the application must set out the location of the land and the size and approximate value of the building or structure involved. Subsection (c) makes an issued permit subject to all health, zoning, subdivision, housing, building, plumbing, and electrical regulations in effect on the issuance date, and caps its validity at one year from issuance. Subsection (d) lets the County Commissioners set a fee based on the County's cost of administering those codes, and lets them adopt rules requiring the permit be posted on the property while work is underway.

Violations & Fines

Proceeding with erection, construction, repair, alteration, or remodeling of a building or structure without first obtaining the required permit is a misdemeanor under § 3-107(e). A conviction before a court of competent jurisdiction carries a fine of not more than $100 plus costs, in addition to the permit fee itself.

Frequently Asked Questions

Who issues building permits in Carroll County's unincorporated area?
The Supervisor of Assessments for Carroll County, per § 3-107(a). No erection, construction, repair, alteration, or remodeling of a building or structure may begin until that office issues the permit.
Is there a minimum project value before I need a permit?
The County Commissioners may exempt work they designate where the value does not exceed $500, but the exemption only exists if the Commissioners have adopted it by regulation; the base rule in § 3-107(a) otherwise requires a permit.
How long is a Carroll County building permit good for?
One year from the date it is issued, under § 3-107(c). The permit is also subject to whatever health, zoning, subdivision, housing, building, plumbing, and electrical rules are in effect on that issuance date.
What is the penalty for building without a permit?
Section 3-107(e) makes it a misdemeanor, punishable on conviction by a fine of not more than $100 plus costs, charged in addition to the permit fee the person still owes.

Sources & Official References

Other rules in Carroll County

Fence Regulations: Height LimitsSome RestrictionsParking Rules: RV & Boat ParkingLight RestrictionsFire Sprinkler RequirementsHeavy RestrictionsPlumbing PermitsSignificant RestrictionsLead PaintLight RestrictionsElectrical PermitsSignificant RestrictionsBuilding InspectionsSome RestrictionsDoor Locking HardwareSome RestrictionsParking Rules: Commercial & Oversized VehiclesSome RestrictionsFence Regulations: Retaining WallsSome RestrictionsAnimal Ordinances: Veterinary Clinic ZoningSome RestrictionsFire Regulations: Propane StorageSome Restrictions

All Carroll County rules

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