Pool Permit in Baltimore County, Maryland
It depends
Sometimes, depending on the project
Before installing any in-ground pool, and before installing an above-ground pool over 250 square feet with 24 inches or more of water depth.
By Mario Bailey, verified against official sources
Quick answer
Every in-ground swimming pool in Baltimore County needs a building permit plus a code-compliant barrier fence. Above-ground pools need a permit only once they exceed 250 square feet of surface area and hold 24 inches or more of water. A pool of any size needs a permit if the property is in the Chesapeake Bay Critical Area, the floodplain, or is a historic property.
Typical threshold: above-ground pool surface area, where the water depth is 24 inches or more; in-ground pools require a permit at any size.
Who is pulling this permit?
Apply yourself
Hire it out
Before you sign, ask the contractor:
- Who pulls the permit, you or me, and is the permit fee included in the bid?
- Which inspections will this job need, and who meets the inspector on site?
- Is your contractor license active in this locality, and under which business name?
When a permit is usually needed
Before installing any in-ground pool, and before installing an above-ground pool over 250 square feet with 24 inches or more of water depth.
What your pool permit must meet in Maryland
Maryland regulates residential swimming pools and spas under a dedicated statewide code, the Maryland Swimming Pool and Spa Standards, rather than through the IRC used for the rest of the house. That chapter currently incorporates the 2024 International Swimming Pool and Spa Code.
- The state runs a dedicated pool and spa code: the 2024 International Swimming Pool and Spa Code (ISPSC) is incorporated by reference in the Maryland Swimming Pool and Spa Standards (COMAR 09.12.56.03).
- The Standards apply to every pool or spa whose building-permit application is received by a local jurisdiction on or after December 31, 2023 (COMAR 09.12.56.02).
- Residential (non-public) pools must be surrounded by a barrier that complies with the ISPSC barrier provisions, Sections 305.2.1 through 305.7 (COMAR 09.12.56.05).
Based on 2024 ISPSC, adopted via COMAR 09.12.56 Maryland Swimming Pool and Spa Standards. Read the code. Local amendments can be stricter; confirm the current requirement with your office before you build.
What a pool permit costs in Baltimore County
How Baltimore County compares in Maryland
| Jurisdiction | Permit needed? | Threshold |
|---|---|---|
| Baltimore Countythis page | It depends | above-ground pool surface area, where the water depth is 24 inches or more; in-ground pools require a permit at any size |
| Howard County | Permit required | Not specified |
| Montgomery County | Permit required | Not specified |
| Prince George's County | It depends | prefabricated pools accessory to one- and two-family dwellings that are installed entirely above ground, hold no more than 5,000 gallons, and have a four-foot fence around the pool perimeter |
Closest pool permit thresholds outside Maryland
Jurisdictions we cover whose limit sits nearest Baltimore County's 250 sq ft.
- Arlington County, Virginia, Under USBC 108.2 a swimming pool is exempt only when its surface area is not greater than 150 square feet and it is less than 24 inches deep; otherwise building and trade permits are required.
- Chesterfield County, Virginia, pools, hot tubs, or spas (permanent or storable) greater than 150 sq ft surface area, 5,000 gallons capacity, and more than 24 inches deep require a building permit; smaller or shallower pools are exempt
- Culpeper County, Virginia, over 150 sq ft surface area or 24 inches or more in depth
- Fairfax County, Virginia, pool over 150 sq ft surface area, over 5000 gallons, or over 24 inches deep requires a building permit
How to apply in Baltimore County
A residential pool permit application covers both construction and safety: a scaled site plan, structural plans for the pool, a barrier plan showing how the pool will be enclosed, and an electrical plan covering bonding and the equipment disconnect.
What most pool permit applications include:
- Pool and spa design and construction fall under the residential code chapter that folds in the swimming pool and spa code, and permit review checks plans against that chapter (IRC R326).
- The site plan must show pool equipment such as pumps, filters, and heaters set back at least 36 inches from the outside of the required barrier (ISPSC 305.2.9).
- For an in-ground pool, engineered structural plans covering the shell and reinforcing steel, with the responsible structural engineer's license information, are a standard part of the submittal (per official pool submittal checklists).
- A barrier plan identifying the fence, pool structure, or dwelling wall that will enclose the pool must be submitted and must comply with the code's barrier chapter (ISPSC 305).
- Electrical plans must show the pool's equipotential bonding design, since the shell, perimeter surfaces, and metal fittings within 5 feet of the water must all tie into a common bonding grid (NEC 680.26).
- The electrical plan must also show a disconnecting means for the pool equipment that is readily accessible and within sight of the equipment (NEC 680.13).
General submittal guidance from 2021 IRC R326 (adopting the ISPSC), ISPSC 2021 Section 305, and NEC 2020 Article 680. Source. Baltimore County Department of Permits, Approvals and Inspections (PAI) sets the exact checklist for Baltimore County.
Where to apply in Baltimore County:
Baltimore County Department of Permits, Approvals and Inspections (PAI)
- County Office Building, 111 West Chesapeake Avenue, Towson, Maryland 21204
- Phone: 410-887-3900
Inspections and closing out your permit
Pool inspections track the concrete pour: the steel and bonding grid are checked before gunite or shotcrete goes in, bonding is checked again before decking is poured, and the permanent barrier and remaining electrical work are checked at final before the pool can be filled and used.
- Before gunite or shotcrete is sprayed, the inspector checks the rebar against the engineered plans and confirms the equipotential bonding wire is stubbed out and tied into the steel, since it will be buried in concrete afterward (NEC 680.26).
- A bonding inspection separately confirms coping, decking, ladders, handrail cups, and any other metal within 5 feet of the water are tied to the bonding grid, and it must pass before coping is installed (NEC 680.26).
- A temporary barrier at least 4 feet high must enclose the site from the moment excavation starts until the permanent barrier is finished, and inspectors check for it throughout construction (ISPSC 305.1.1).
- A pre-plaster inspection confirms the circulation equipment's electrical work is installed and all bonding is complete before the pool's interior finish goes on (NEC 680.26).
- At final inspection the permanent barrier is checked against the code's requirements and the equipment and cover-mechanism bonding must be complete before the pool can be filled and used (ISPSC 305, NEC 680.26).
Schedule each inspection in advance and pass the final before you use the work or close the permit. Request inspections through the Baltimore County permit portal or by phone at 410-887-3900.
Inspection sequence from NEC 2020 Article 680.26 (equipotential bonding) and ISPSC 2021 Section 305 (barriers). Source. An open permit left un-inspected can surface later in a title search or home sale.
Your Pool Permit checklist for Baltimore County
- Confirm the requirement. Sometimes, depending on the project. Typical threshold: above-ground pool surface area, where the water depth is 24 inches or more; in-ground pools require a permit at any size. Usually needed: Before installing any in-ground pool, and before installing an above-ground pool over 250 square feet with 24 inches or more of water depth.
- Budget the fee. Building Permit Fee Schedule effective 07/01/26: Swimming Pool, Residential, Above Ground $60.00; Residential, In-ground $100.00; Automatic Pool Cover $30.00; Fence Around Pool $35.00 + $0.05 / linear ft over 250 linear ft, Minimum $35.00. Separate trade permits carry their own fees: Electrical Permit Fee Schedule effective 11/26/18, Swimming Pool, Residential $68.00; Plumbing Inspection Fee Schedule effective 11/26/18, Swimming Pool $79.00. Official fee schedule.
- Apply. A residential pool permit application covers both construction and safety: a scaled site plan, structural plans for the pool, a barrier plan showing how the pool will be enclosed, and an electrical plan covering bonding and the equipment disconnect. Start at the Baltimore County permit portal.
- Keep the office details handy. Baltimore County Department of Permits, Approvals and Inspections (PAI). Phone: 410-887-3900. Address: County Office Building, 111 West Chesapeake Avenue, Towson, Maryland 21204.
- Plan for inspections. Pool inspections track the concrete pour: the steel and bonding grid are checked before gunite or shotcrete goes in, bonding is checked again before decking is poured, and the permanent barrier and remaining electrical work are checked at final before the pool can be filled and used.
Compiled from the official sources on this page. Last checked .
Frequently asked questions
- Do you need a pool permit in Baltimore County?
- Every in-ground swimming pool in Baltimore County needs a building permit plus a code-compliant barrier fence. Above-ground pools need a permit only once they exceed 250 square feet of surface area and hold 24 inches or more of water. A pool of any size needs a permit if the property is in the Chesapeake Bay Critical Area, the floodplain, or is a historic property. Above-ground pool surface area, where the water depth is 24 inches or more; in-ground pools require a permit at any size. Always confirm with the office before starting.
- How much does a pool permit cost in Baltimore County?
- Building Permit Fee Schedule effective 07/01/26: Swimming Pool, Residential, Above Ground $60.00; Residential, In-ground $100.00; Automatic Pool Cover $30.00; Fence Around Pool $35.00 + $0.05 / linear ft over 250 linear ft, Minimum $35.00. Separate trade permits carry their own fees: Electrical Permit Fee Schedule effective 11/26/18, Swimming Pool, Residential $68.00; Plumbing Inspection Fee Schedule effective 11/26/18, Swimming Pool $79.00. See the official fee schedule for current amounts.
- Where do you apply for a pool permit in Baltimore County?
- You can apply through the Baltimore County permit portal or contact the Baltimore County Department of Permits, Approvals and Inspections (PAI) directly. The links are listed on this page.
- Can a homeowner pull a pool permit themselves in Baltimore County?
- Under Maryland law (Md. Code, Bus. Occ. and Prof. 12-301(b), 6-607(1); Public Safety 12-505): It depends on the trade and the county. Plumbing: state law exempts an individual who personally provides plumbing services in their own residence, but homeowners may not make final connections between the residence and public or private water supply or disposal systems, and Baltimore County plus the WSSC-area counties are largely carved out of the state plumbing title. Electrical: the Maryland Electricians Act prohibits providing electrical services for compensation without a license; it has no express homeowner exemption, so uncompensated work on one's own home falls outside the licensing prohibition, but each county decides whether it will issue an electrical permit to an unlicensed homeowner. Building permits are issued by local jurisdictions, which set their own owner-applicant rules. Confirm how Baltimore County applies this before you apply.
From the Library
What else needs a permit in Baltimore County
Every other permit type we have verified for this jurisdiction, with the rule that applies here.
| Project | Permit needed? | Threshold | Typical fee |
|---|---|---|---|
| Deck Permit | It depends | deck floor area, with a permit also required for any deck more than 16 inches above the lowest grade | Building Permit Fee Schedule effective 07/01/26: Decks (Open Deck) (under 600 sf) $105.00 |
| Electrical Permit | It depends | Not specified | Electrical Permit Fee Schedule effective 11/26/18: Residential Service (each meter)... |
| Fence Permit | It depends | fence height measured vertical to ground, including a fence set on top of a wall | Building Permit Fee Schedule effective 07/01/26 lists Fences, Residential: $35.00 +... |
| HVAC Permit | It depends | Not specified | The Building Permit Fee Schedule effective 07/01/26 prices Mechanical, HVAC System Only... |
| Plumbing Permit | Permit required | Not specified | Plumbing Inspection Fee Schedule effective 11/26/18: Inspection, New, for 1st fixture... |
| Roof Replacement Permit | It depends | share of the sheathing or deck being replaced in a roofing job | The Building Permit Fee Schedule effective 07/01/26 publishes no roofing line item. |
| Shed Permit | It depends | accessory structure floor area | Building Permit Fee Schedule effective 07/01/26: Accessory Structure, Under 1000 sf... |
| Solar Permit | Permit required | Not specified | Building Permit Fee Schedule effective 07/01/26: Solar Power System, Residential (Roof... |
Pool Permit in other Maryland localities
Everything above, sourced
Code references
National and state model-code sections the general guidance on this page is drawn from. They are not Baltimore County documents; the office above sets the local rules.
Verified by a person against the sources above on , not confirmed with Baltimore County Department of Permits, Approvals and Inspections (PAI). Rules change; confirm before you build. How we verify.
Last checked: Report an error on this page
Permit office
Baltimore County Department of Permits, Approvals and Inspections (PAI)
410-887-3900Permit portalMaryland rule changes
- Howard County, MD raises shed and fence permit-exemption limits (CB24-2025)
CB24-2025 (Bill No. 24-2025) ·
- Montgomery County, MD FY27 permit fee schedules take effect
FY27 Fee Schedule (Council-approved FY27 Budget) ·
Compare
Pool Permit across Maryland