Calvert County's Division of Inspections and Permits in the County Administration Building at 150 Main Street in Prince Frederick issues building, grading, electrical, plumbing and gas permits and inspects them, administering the international building codes, the National Electrical Code and the National Standard Plumbing Code alongside the county's own ordinances. It also licenses builders, electricians and plumbers at county level, providing staff support to the local Building Board, Plumbing Board and Electrical Board — so a contractor working the peninsula between the Patuxent and the bay holds a county credential as well as a state one.
The division sequences its permits rather than running them in parallel. Building permits for a project must be approved, paid for and issued before the electrical and plumbing permit applications are submitted, and no permit is valid until an inspector has approved the application, payment has been received and the permit issued. Applications go through the county's online portal, where status, details, fees, document uploads and inspection scheduling all live, and incomplete or inaccurate applications are rejected rather than corrected.
This guide covers Calvert County, including Prince Frederick, Lusby, Solomons and Huntingtown, all unincorporated. The towns of North Beach and Chesapeake Beach have their own municipal roles; confirm the town's approvals before filing inside them.
The building permit comes first, then the trades. The division requires that building permits for a project be approved, paid for and issued prior to the submittal of electrical and plumbing permit applications, and that no permit is valid until an inspector has approved the application, payment has been received and the permit issued. Trade contractors who file alongside the builder in other counties will find their applications will not be accepted here yet.
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Get a free quote →What requires a building permit in Calvert County?
Typically permit required
- Building, grading, electrical, plumbing and gas work, each permitted by the division
- County licensing for builders, electricians and plumbers, in addition to the state credentials
- Zoning and water and sewer questions, settled with planning and zoning and the Division of Water and Sewerage before the construction permit process
- New buildings, additions and any structural work on an existing building
- Interior alterations that reconfigure space, add plumbing fixtures or extend circuits, under the building or residential code and the Maryland Building Rehabilitation Code
- Decks, accessory structures above the local exemption threshold, retaining walls and swimming pools, including above-ground pools
Often exempt
- Work the adopted codes place outside the permit requirement; the division confirms the case before work starts
- Painting, wallpapering, interior finishes, cabinets, flooring and trim
- Like-for-like replacement of windows and doors in the same opening
- Small detached accessory structures below the jurisdiction's exemption threshold and fences below its height limit — the zoning rules still apply
- Minor repairs that do not remove or alter structural members
What is actually local, and what is not
The code editions are the state's. Calvert County's layer is the enforcing office and its amendments to the building and residential codes, its fee schedule, its grading ordinance and its stormwater programme under MDE criteria, and the county's own builder, electrician and plumber licensing and the strict permit sequence behind it.
Maryland enforces one statewide set of codes, the Maryland Building Performance Standards (COMAR 09.12.51), through the county or city permit office, which may amend the building and residential codes for local conditions. Maryland rules
Who handles permitting in Calvert County?
The Division of Inspections and Permits is the enforcing office, issuing the permits, performing building, electrical, plumbing, fire protection and accessibility inspections, and issuing county licences to builders, electricians and plumbers with staff support to the local Building Board, Plumbing Board and Electrical Board. The Department of Planning and Zoning answers zoning questions before the permit process, and the Division of Water and Sewerage covers public water and sewer regulations and fees.
| Detail | Information |
|---|---|
| Department | Calvert County Division of Inspections and Permits |
| Office | County Administration Building, 3rd Floor, 150 Main Street, Prince Frederick, MD 20678 |
| Phone | (410) 535-2155; alternate (301) 855-1243 |
| Hours | Monday to Friday, 8:30 am to 4:00 pm; closed 8:30 to 10:00 am on the first and third Thursday of each month |
| Filing | County online portal for status, fees, documents and inspection scheduling |
| Before applying | Planning and Zoning for zoning regulations; Water and Sewerage for public utility rules and fees |
Not sure this scope needs a permit?
Get a free quote →In 2025, building permits issued by Calvert County authorized 157 new privately owned housing units, 119 of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.
Permit types
Residential permits
A Calvert house project checks zoning with planning and zoning and the utility position with water and sewerage first, then files the building permit through the portal — complete and accurate, since incomplete applications are rejected. Once that permit is approved, paid and issued, the electrical and plumbing applications follow, filed by contractors holding both the state licence and the county's own. The county's interactive property and topographic maps are the tool the division points applicants to for site information.
Commercial permits
Commercial work in Calvert County follows the same sequence, with the division inspecting building construction, electrical and plumbing installation, fire protection and accessibility. The Cove Point and Solomons corridors carry their own shoreline and Critical Area considerations, and the county's boards hear the licensing matters that arise from the trades working them.
Prior approvals, plan review and the local clock
In Calvert County the Chesapeake Bay Critical Area governs the bay and Patuxent shorelines, the county's grading permits cover the earthwork, and the Division of Water and Sewerage sets the public utility conditions before the construction permit. Maryland sets no deadline for deciding a building permit (though since 1 October 2026 the office must decide within 30 days whether a housing application is complete) — Calvert County publishes its own targets, and they are the number to plan against.
Rather talk it over?
Call 1-855-478-4290 →Maryland licenses home improvement contractors through the Maryland Home Improvement Commission and home builders register with the Attorney General; trade licences are mostly state licences, but some counties and WSSC license or register trades themselves. Maryland rules
Calvert County permit costs and fees
Fees follow the division's residential and commercial fee guides, paid through the county portal, with water and sewer fees charged by their own division.
| Item | Fee or rule |
|---|---|
| Building permit | Division fee guides for residential and commercial construction, paid through the portal |
| Trade permits | Electrical, plumbing and gas permits, filed only after the building permit has issued |
| Grading permit | Issued by the same division alongside the building permit |
| County licences | Builder, electrician and plumber licences issued by the division |
| Water and sewer | Public utility fees set by the Division of Water and Sewerage |
| Validity | No permit is valid until approved, paid and issued |
Incomplete applications are rejected, not corrected. The division states that incomplete or inaccurate applications will be rejected — not held for correction. On a portal where the building permit gates the trade applications behind it, a rejected first filing costs the whole sequence, so the site information and the zoning and utility answers belong in the file before it goes in.
Rather not deal with the Calvert County building department?
Get a free quote →Trade permits and who may pull them
Permit required
- Builders, electricians and plumbers — county licences from the division in addition to the state credentials
- Electrical — state-licensed master electrician; separate electrical permit
- Plumbing and gas — state-licensed master plumber or gas fitter; separate plumbing and gas permits
- HVACR — state-licensed HVACR contractor; mechanical permit
- Fire protection, alarms and sprinklers — fire marshal review, state or local, with the building permit
Typically exempt
- Like-for-like fixture, receptacle and switch replacement where the licensing boards' rules allow it
- Low-voltage and communications wiring below the local permit threshold
Trade work is permitted separately and inspected locally or, for electrical work in many counties, by a state-certified private inspection agency. Maryland rules
How to apply for a Calvert County building permit
Zoning certification, grading and sediment control, stormwater, forest conservation and Critical Area review run ahead of the building permit.
The home builder registration number (required by state law for new homes) or, where the office asks for it, the Maryland Home Improvement Commission licence number goes on the application.
The local application with the building, residential and energy code submittals the scope requires, and trade permits alongside.
Reviewers in the local office check the building, residential and energy codes as the jurisdiction amended them; corrections are answered in writing.
Fees follow the jurisdiction's ordinance and are due before issuance.
Footing to final by permit number, then the use and occupancy certificate that closes the permit.
Review, corrections and what actually causes delay
Calvert County reviews through its portal, where applicants check status, view details, pay fees, upload documents and schedule inspections. What delays a file here is an electrical or plumbing application filed before the building permit issued, an incomplete application rejected outright, and a zoning or utility question left to the permit stage.
Want this handled start to finish?
Get a free quote →Inspections in Calvert County
Inspections follow the adopted codes' required sequence — footing, foundation, framing, rough trades, insulation and final — and are requested from the local office by permit number. Work that passes final receives a use and occupancy certificate for new buildings and changes of use, or a final approval on the permit for everything else. Calvert County inspects building construction, electrical and plumbing installation, fire protection and accessibility through the division’s own staff. Inspections are requested through the Encompass portal or by phone on 410-535-2155 before 3 pm for the next business day; grading inspections are done by the Department of Public Works, Project Management Division.
Calvert County permit search and official resources
- Calvert County Inspections and Permits — the division, its licensing role and the permit sequence
- Calvert County permit application forms — the residential and commercial forms and fee guides
- Maryland Building Performance Standards — the statewide codes the county enforces
- Maryland Building Performance Standards — the statewide code adoptions from the Department of Labor's Building Codes Administration
- Maryland Home Improvement Commission — home improvement contractor licensing and the guaranty fund
- Home Builder Registration Unit — new home builder registration with the Attorney General
Inspections are where schedules slip.
Get a free quote →Frequently asked questions
When can trade permits be applied for?
After the building permit for the project has been approved, paid for and issued; the division does not accept electrical and plumbing applications before that.
Do I need a county licence as well as a state one?
For builders, electricians and plumbers, yes — the division issues county licences and staffs the local Building Board, Plumbing Board and Electrical Board.
When is a permit valid?
Only once an inspector has approved the application, payment has been received and the permit has been issued; permits must be obtained before starting work.
What happens to an incomplete application?
It is rejected. The division's guidance is that incomplete or inaccurate applications will be rejected rather than held for correction.
Where do zoning and utility questions go?
To the Department of Planning and Zoning for zoning regulations and the Division of Water and Sewerage for public water and sewer rules and fees, before the construction permit process.
Which code edition applies?
The 2021 editions of the International Building Code, International Residential Code and International Energy Conservation Code with Maryland modifications, effective statewide on May 29, 2023 under the Maryland Building Performance Standards, with local enforcement required from May 29, 2024.
Simplify Calvert County permitting with Alliance Permitting
Calvert County will not let the trades start until the building permit is in hand, and will not fix an incomplete file for you. We answer zoning and utilities first, file complete, and release the trade applications the day the building permit issues.
Ready to break ground in Calvert County sooner?
Send us the scope and the parcel. We confirm the review path with the Calvert County Division of Inspections and Permits, assemble the submittal, file it, and track it through issuance — corrections included.
More Maryland permitting guides
More Maryland permitting guides
This guide is provided by Alliance Permitting for general information about Calvert County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.