---
title: "Anne Arundel County Garage Permits: Rules & Setbacks | TBG"
description: "Every garage needs a permit in Anne Arundel County: attached vs. detached, setbacks by zone, fire separation, Critical Area rules, fees and inspections."
url: https://thebrettgroup.com/guides/garage-permit-anne-arundel/
last_updated: 2026-11-02
---

[TBG](https://thebrettgroup.com/) / [Home Remodeling](https://thebrettgroup.com/remodeling/) / Garage permit guide

Local guide · Anne Arundel County · October 2026

# Do you need a permit to build a garage in Anne Arundel County?

Yes. Every garage and carport needs a county building permit, whatever its size. Here is how the county decides attached vs. detached, where a detached garage can go, what the inspectors check, and what it costs.

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Short answer

Do I need a permit to build a garage in Anne Arundel County?

Yes. Every garage and carport needs a county building permit, attached or detached, whatever its size. The 150 square foot exemption is for sheds and gazebos only.

Updated November 2026 · Official sources

- **Any size**: Every garage and carport needs a permit
- **3 ft**: Closer than this to the house counts as attached
- **5 ft**: Closer to a lot line needs a 1-hour fire wall
- **$242 + 1%**: Building fee for work over $25,000

| Project | County permit? |
| --- | --- |
| Attached garage | Yes, filed as a single-family dwelling permit |
| Detached garage or carport | Yes, filed as a residential accessory structure |
| Garage within 3 ft of the house | Yes, treated as attached |
| Wiring, a subpanel or an EV charger circuit | Yes, separate electrical permit |
| Converting a garage to living space | Yes, alteration permit (ADU rules if it becomes a unit) |
| Shed 150 sq ft or less, 10 ft or less tall | Not required outside the Critical Area (see our shed guide) |

## 1. Attached or detached?

The county's shed exemption doesn't cover garages: garages and carports always need a permit. A garage within **3 feet** of the house, or joined to it by an enclosed breezeway 15 feet long or less, counts as part of the house. An attached garage is filed as a single-family dwelling permit and must meet the house setbacks (in R2, for example, 30 feet front, 25 feet rear and 7 feet side). Anything farther away is a detached accessory structure.

## 2. Where a detached garage can go

On a lot that isn't on the water, an accessory structure can't sit in the front yard, and it must be on the same lot as the house. It also can't be in a setback from a road right-of-way. Setbacks and height limits depend on your zoning district:

| Zone | Side and rear setback | Corner side | Max height | Max lot coverage by structures |
| --- | --- | --- | --- | --- |
| RA | 15 ft (10 ft if under 8 ft tall) | 40 ft | 45 ft, with larger setbacks over 25 ft | 25% |
| R1 | 15 ft (10 ft if under 8 ft tall) | 40 ft | 45 ft, with larger setbacks over 25 ft | 25% |
| R2 | 7 ft (5 ft if under 8 ft tall) | 20 ft | 25 ft or the house height, whichever is less | 30% |
| R5 | 7 ft (5 ft if under 8 ft tall) | 15 ft | 25 ft or the house height, whichever is less | 40% |

The code also caps an accessory building's floor area at the floor area of the house, though space used to park vehicles isn't counted as floor area. Look up your zoning district on the county map before you design, and confirm corner-lot setbacks with Planning and Zoning: they changed recently in R2. Keep the garage clear of septic systems, wells and easements, which must be shown on the site plan.

## 3. What the code requires

- **Fire separation for attached garages:** at least ½-inch gypsum board between the garage and the house and attic, or ⅝-inch Type X if there are rooms above.
- **The door into the house:** 20-minute rated or 1⅜-inch solid wood, with a self-closer. No openings into bedrooms.
- **The floor:** non-combustible and sloped toward the overhead door.
- **Close to the line:** a wall less than 5 feet from a property line needs a 1-hour fire rating.
- **Footings:** at least 30 inches deep, the county's frost depth.

## 4. Applying and inspections

File through the county's Land Use Navigator with construction plans at architectural scale, a site plan at engineering scale showing property lines, easements and any well or septic, a Critical Area worksheet and, where it applies, a standard grading plan. Electrical, plumbing, gas and mechanical work need separate permits pulled by licensed trades. A garage usually gets footing, slab, framing and final inspections; the framing inspection needs truss shop drawings, the permit must be active 24 hours before the first inspection, and every trade permit has to pass final before the building final.

## 5. Fees

| Estimated cost of work | Building permit fee |
| --- | --- |
| Up to $3,000 | $86 |
| $3,001 to $5,000 | $103 |
| $5,001 to $10,000 | $147 |
| $10,001 to $15,000 | $164 |
| $15,001 to $20,000 | $198 |
| $20,001 to $25,000 | $242 |
| Over $25,000 | $242 plus 1% of the cost above $25,000 |

Add a $43 application fee. A $60,000 detached garage, for example, comes to $242 + $350 + $43 = **$635** before trade permits. An electrical permit for a residential alteration is $95 without a service change. Try our [permit fee calculator](https://thebrettgroup.com/guides/permit-fee-calculator-anne-arundel/).

## 6. Near the water or in a floodplain

Within 1,000 feet of tidal water, the Chesapeake Bay Critical Area rules apply. A garage and its driveway count toward your lot coverage limit, which is 15% for most lots and higher for small lots created before December 1, 1985 (for example, 31.25% for lots of 8,001 to 21,780 sq ft). Stay out of the 100-foot shoreline buffer. See our [Critical Area guide](https://thebrettgroup.com/guides/building-near-the-water-critical-area/).

In the floodplain, a garage can sit below the flood protection elevation only if it's used for parking, storage or access, with its floor at or above grade, flood vents and anchoring. Attached garages, two-story garages and those over 300 sq ft also need a recorded agreement not to convert the space. See our [flood zone guide](https://thebrettgroup.com/guides/flood-zone-renovation-anne-arundel/).

## 7. Converting a garage

Turning a garage into living space is an alteration that needs a permit; email the county permit center with your address and plans to confirm what to file. In the floodplain, conversion isn't allowed unless the floor is raised to the flood protection elevation. A garage can also become an accessory dwelling unit: one per lot, with its own entrance, and in a detached building no larger than 800 sq ft or half the house's floor area, whichever is less. See our [in-law suite and ADU guide](https://thebrettgroup.com/guides/in-law-suites-adu-anne-arundel/).

## 8. Inside Annapolis city limits

The City of Annapolis issues its own permits through its Department of Planning and Zoning. A garage needs building, Critical Area, grading and trade review, and the city's target review time for a garage is 7 business days. In the Historic District, you need a certificate of approval from the Historic Preservation Commission before you apply for the building permit. City setbacks vary by district; ask a city planner early. See our [Annapolis city permit guide](https://thebrettgroup.com/guides/annapolis-city-building-permits/).

## Where this comes up most

[Davidsonville →](https://thebrettgroup.com/remodeling/davidsonville/) · [Crownsville →](https://thebrettgroup.com/remodeling/crownsville/) · [Gambrills →](https://thebrettgroup.com/remodeling/gambrills/) · [Millersville →](https://thebrettgroup.com/remodeling/millersville/) · [Severna Park →](https://thebrettgroup.com/remodeling/severna-park/) · [Arnold →](https://thebrettgroup.com/remodeling/arnold/)

## Projects we match

- [Additions](https://thebrettgroup.com/remodeling/additions/anne-arundel/): Bump-outs, second stories and in-law suites.
- [New custom homes](https://thebrettgroup.com/remodeling/custom-homes/anne-arundel/): Build on your lot with a registered Maryland home builder.
- [Decks & exteriors](https://thebrettgroup.com/remodeling/decks-exteriors/anne-arundel/): Decks, porches, siding, windows and roofing.
- [Kitchen remodels](https://thebrettgroup.com/remodeling/kitchen/anne-arundel/): Layouts, cabinets, counters and full gut renovations.

## Common questions

### Do I need a permit to build a garage in Anne Arundel County?

Yes. Every garage and carport needs a county building permit, attached or detached, whatever its size. The 150 square foot exemption is for sheds and gazebos only.

### How close to the property line can a detached garage be in Anne Arundel County?

It depends on the zoning district: 7 feet from side and rear lines in R2 and R5, and 15 feet in R1 and RA. A wall less than 5 feet from a property line also needs a 1-hour fire rating.

### When is a garage considered attached?

When it is within 3 feet of the house or joined to it by an enclosed breezeway of 15 feet or less. It is then filed as a house permit and must meet the house setbacks.

### How much is a garage permit in Anne Arundel County?

The building fee is based on the cost of work: $242 plus 1% of the cost above $25,000 for a typical garage, plus a $43 application fee. A $60,000 garage comes to about $635 before trade permits.

### Can I convert my garage into living space?

Yes, with a permit. It can also become an accessory dwelling unit under the county ADU rules. In the floodplain, the floor must first be raised to the flood protection elevation.

## Official sources

[AA County: Do I need a permit?](https://www.aacounty.org/inspections-and-permits/permits/do-i-need-permit) · [AA County: Accessory structure permits](https://www.aacounty.org/inspections-and-permits/permits/residential-permits/accessory-structure) · [AA County: Single-family dwelling permits](https://www.aacounty.org/inspections-and-permits/permits/residential-permits/single-family-dwelling-permit) · [AA County Code §18-2-204 (accessory structures)](https://codelibrary.amlegal.com/codes/annearundel/latest/annearundelco_md/0-0-0-118257) · [AA County Code: R1 bulk regulations](https://codelibrary.amlegal.com/codes/annearundel/latest/annearundelco_md/0-0-0-118644) · [AA County Code: R2 bulk regulations](https://codelibrary.amlegal.com/codes/annearundel/latest/annearundelco_md/0-0-0-118649) · [AA County Code: R5 bulk regulations](https://codelibrary.amlegal.com/codes/annearundel/latest/annearundelco_md/0-0-0-118654) · [AA County Code: RA bulk regulations](https://codelibrary.amlegal.com/codes/annearundel/latest/annearundelco_md/0-0-0-118631) · [AA County: Residential code requirements](https://www.aacounty.org/inspections-and-permits/building-codes/residential-code-requirements) · [AA County: Building inspections](https://www.aacounty.org/inspections-and-permits/inspections/building-inspections) · [AA County: Permit fees](https://www.aacounty.org/inspections-and-permits/fees/permit-fees) · [AA County: Critical Area](https://www.aacounty.org/planning-and-zoning/development/critical-area) · [AA County Code: Critical Area lot coverage](https://codelibrary.amlegal.com/codes/annearundel/latest/annearundelco_md/0-0-0-117211) · [AA County Code: Floodplain accessory structures](https://codelibrary.amlegal.com/codes/annearundel/latest/annearundelco_md/0-0-0-114923) · [AA County Code §18-10-121 (ADUs)](https://codelibrary.amlegal.com/codes/annearundel/latest/annearundelco_md/0-0-0-128829) · [City of Annapolis: Permit Review Guide](https://www.annapolis.gov/2416/Permit-Review-Guide) · [City of Annapolis: Building permit information](https://www.annapolis.gov/1064/Building-Permit-Information)

This guide is general information, not legal or engineering advice. Rules and maps change; confirm the requirements for your property with the permit office before you design or sign a contract.

## Related guides

[- **Deck permit guide**: Most decks in Anne Arundel County need a building permit. Here is when you need one, what the county…](https://thebrettgroup.com/guides/deck-permits-anne-arundel/) · [- **Basement permit guide**: Yes. Turning a basement into living space needs a county building permit, plus separate electrical,…](https://thebrettgroup.com/guides/basement-finishing-permit-anne-arundel/) · [- **Kitchen permit guide**: It depends on what you change. Moving or removing walls needs a building permit, and new wiring, plumbing…](https://thebrettgroup.com/guides/kitchen-remodel-permit-anne-arundel/) · [- **Bathroom permit guide**: Usually, yes. Moving or adding fixtures needs a plumbing permit, new wiring needs an electrical permit, and…](https://thebrettgroup.com/guides/bathroom-remodel-permit-anne-arundel/) · [- **Fence permit guide**: Most backyard fences don't. A county permit is required for fences over 6 feet tall, fences on corner lots…](https://thebrettgroup.com/guides/fence-permit-anne-arundel/) · [- **Shed permit guide**: A small shed, 150 square feet or less and 10 feet tall or less, doesn't need a county permit, unless you…](https://thebrettgroup.com/guides/shed-permit-anne-arundel/)

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